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Boron nitride and some of its preparation methods

Boron nitride The first application of hexagonal Boron Nitride, or hBN, was as a lubricant for high temperatures. The structure of hBN is very similar to graphite. Because it is white and has a similar performance, it is known as white graphite.The hexagonal structure of boron is amorphous, but there are also graphite-like variants. Other crystal forms of Boron Nitride exist, in addition to hexagonal crystals. These include: rhombohedral Boron Nitride (abbreviation, r—- BN), Cubic Boron Nitride (abbreviation, c-BN), Wurtzite Type Boron Nitride. There are even two-dimensional boron crystals that look like graphene.
Wentorf created cubic BN first in 1957. Pure hexagonal boron nitride can be directly converted into cubic boron nitride when the temperature is near or above 1700degC, and the pressure is between 11-12 GPa. The use of a catalyst can reduce both the transition pressure and temperature. The most common catalysts include alkali metals and alkaline nitrides. Ammonium borate is the least expensive catalyst, but also requires the lowest pressure and temperature. At 1500, the required pressure is 5GPa and at 600700 degrees Fahrenheit the pressure is 6GPa. Although the addition of catalysts can significantly reduce the temperature and pressure required for the transition, they are still quite high. The preparation equipment for this catalyst is complex and expensive, and the industrial applications are limited.

Various preparation methods of Boron Nitride
1.Chemical vapor synthesis
Sokolowski was the first to use pulsed-plasma technology in 1979 for the preparation of cubic boron (CBN), at low temperature, and under low pressure. Equipment is simple, and the process can be easily realized. This has led to rapid development. There are many vapor deposition techniques. In the past, the term was used to describe mainly thermal chemical vapour deposition. The experimental device generally consists of heat-resistant quartz tubes and heating devices. The substrate may be heated using a hot-wall CVD furnace or by high-frequency electromagnetic induction (cold-wallCVD). The reaction gases decompose on the surface the substrate at high temperatures, while a chemical reactions occurs to deposit film. The reaction is a gas mixture of BCl3 and B2H4 or NH3.
Hydrothermal synthesis
Water is used as a reaction medium to dissolve insoluble and insoluble substances in an autoclave environment of high temperature and high pressure. The reaction can be recrystallized. It is also carried out within a sealed container, which prevents the components from escaping. This method is used as a low-temperature, low-pressure synthesis to produce cubic boron oxide at low temperatures.
3.Benzene Thermal Synthesis
As a low temperature nanomaterial synthesis technique that has been developed in recent times, the benzene thermochemical synthesis has attracted widespread attention. The conjugated structure of benzene makes it an ideal solvent for solvothermal syntheses. It has been successfully adapted to benzene thermo synthesis, including the reaction formula.
The reaction temperature for this technology is only 450degC. A metastable phase can be created only in extreme conditions of low pressure and temperature, and it can only exist at ultra-high pressure. This method is able to produce cubic boron at low temperature under low pressure. The method is still under experimental research and has great application potential.
4. Self-propagating technology
The energy needed from the outside is used for high exothermic reactions. The system then reacts locally, forming a chemical reaction wave (combustion front). The chemical reactions are accelerated with its own heat and spread across the entire system. It is an inorganic method that has been around for a long time. However, this particular method was used to synthesize boron oxide only in the last few years.

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Boron nitride The first application of hexagonal Boron Nitride, or hBN, was as a lubricant for high temperatures. The structure of hBN is very similar […]

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Hafnium is a shiny silver-gray tetravalent transition metal

Overview of Hafnium Hafnium, whose symbol is Hf is a chemical with an atomic weight of 72. Hafnium occurs in zirconium minerals and is a shiny, silver-gray transition metal. Dmitri Menedeleev predicted it’s existence in 1869. But it wasn’t discovered until 1923 by Coster and Hevesy, making it one of the last stable elements to be discovered.

There are six natural stable isotopes in hafnium, which include hafnium 180, 179, 178 and 174. Hafnium doesn’t react with dilute sulfuric and hydrochloric acids, nor does it interact with strong alkaline or dilute hydrochloric solutions. It is, however, soluble in hydrofluoric and aqua regia. This element’s name comes from Copenhagen in Latin. Hafnium’s content in the crust of the earth is 0.00045%. In nature, it is usually associated with zirconium.
Hafnium filaments and electrodes are used. Integrated circuits are used in some semiconductor manufacturing processes. These integrated circuits use oxides whose characteristic lengths are 45 nanometers or smaller. Some special-purpose superalloys contain hafnium, niobium, titanium or tungsten.

Hafnium is a material that can absorb neutrons well in the control rods used in nuclear power stations. But it also needs to be removed because it interferes with the corrosion-resistant zirconium-based alloys.
What are hafnium’s Characteristics?
Hafnium has corrosion-resistant properties, is shiny and silver, malleable, and similar in chemical properties to zirconium. It also has a relativeistic effect, with the atomic radius expected to be from the fifth to first. The contraction of lanthanides nearly completely offset the expansion phase 6. Hafnium is a shiny silver malleable metal, corrosion-resistant, and has chemical properties similar to zirconium (because it shares the same number of valence electrons, but also because of its relativistic effect; the expansion of phase 6 was almost completely offset by the contraction of lanthanides).

Chemically, hafnium is very similar to zirconium. They cannot be differentiated because they undergo different reactions. Chemically, the two elements are very similar. The main differences between them are their melting and boiling points and solubility.

Hafnium makes up 5.8 parts per million of the Earth’s crust. It is not found as a pure element on Earth, but rather is solid-dissolved in natural zirconium oxides, such as ZrSiO4. Usually, Hf replaces 1-4% zirconium.

Carbonate intrusions and especially coronal polymetallic deposits at Mount Wilde, Western Australia are the main sources of zircon and hafnium ore. Hafnium can be found in rough tuff that contains zircon-hafnium ore, aluminum transparent ore, and rare zircon. This is located in the Dubbo region of New South Wales.

Hafnium reserves could be maintained less than 10 year if demand and population increase. Due to the coexistence between hafnium & zirconium in nature, hafnium may be extracted as a zirconium by-product under low demand.

Is hafnium considered a rare earth?
Hafnium, which is rare in nature, can be found at up to 5% concentration in most zirconium mineral. Hafnium is 45th on the list of most abundant elements. According to Chemical Kuhl’s study, hafnium occupies approximately 3.3 parts for every million of earth’s surface.

Is hafnium poisonous?
Hafnium does not contain any toxic substances. Hafnium is insoluble in any liquid, including water and salt solutions. Hafnium is absorbed through the lungs, skin, or eye contact. Hafnium, and its compounds can cause minor irritations of the mucous membranes, skin or eyes.

How can hafnium be used?
Hafnium works well as a neutron-absorbing material in control rods for nuclear reactors. Hafnium also serves as a vacuum tube getter. This material removes and combines gas from the vacuum tube. Hafnium alloys with iron, titanium, Niobium, and other metals.
Hafnium can be drawn in threads and is a shiny, silver metal. It is resistant to corrosion. Hafnium, a good neutron-absorbing metal, is used in the manufacture of control rods on nuclear submarines. It is also used in plasma torch because it has a very high melting temperature.
The hafnium-isotope method is a new way to solve an old mystery. It can determine the origins of high quality Roman glass.
Glass is an archaeologically interesting material. Although its fragility and beauty is attractive, geochemical analysis of invisible tracers reveals more than the surface. Rome has a very large glass industry, which produces many products including drinking glasses, catering glass, window glass and stained-glass “stones” used for mosaics. The production of a high number of colorless, transparent glasses is a major achievement. These are ideal for cutting drinkers of the highest quality. It is however known that there was a significant amount of Roman colored glass made in Palestine. Archaeologists found a glass-making furnace. Egypt has never been home to a furnace of this type. From a scientific standpoint, it has been difficult to differentiate the glass made in both regions.

Aarhus University and UrbNet Assistant Professor Gry Barfod, in collaboration with AGiR at Aarhus University, have now found a way to solve the problem. Their research into Roman glass found in the Denmark/Germany Jerash Northwest Project of Jordan revealed that the isotopes of the rare metal hafnium were able to be used as a way to differentiate Egyptian from Palestinian glass.

Gry barfod said, “I hope that the hafnium system will leave fingerprints of origin on the glass sand.” Charles Lescher is a professor from Aarhus University and co-author. He said that the measurement results confirm this expectation, proving the connection between archaeology, geology, and history.

Hafnium has never been used to study ancient materials, such as glass and ceramics. Professor Ian from University College London commented, “These exciting results clearly demonstrate the potential of hafnium to explain the origin of early material.” They will, I predict, become important tools for the study of ancient economy. component.”

The Nile River is the source of the sand that covers the Mediterranean coasts of Egypt, Israel, Lebanon, Syria, and Palestine. This sand has a high amount of calcium, which makes the glass non-degradable and stable. In the Levant they produced clear glass by adding Manganese. This is good but it’s not perfect. Scientists now show that the second type Roman glass they have discovered comes from Egypt. Antimony (Sb) was added to make the glass transparent. It is therefore the most valuable of all glass.

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Overview of Hafnium Hafnium, whose symbol is Hf is a chemical with an atomic weight of 72. Hafnium occurs in zirconium minerals and is a […]

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Silica Aerogel Research and Application

Aerogel is the name of a Nano-scale solid material made by the Sol-gel method. This method uses a drying method that replaces the liquid phase with gas. Such as gelatin, gum Arabic, silica aerogel , hair, nails, etc. Aerogels are also gels with swelling, thixotropy or de-sizing properties.Aerogel, a dense material, is the smallest in the world. The density is three kilograms per cubic foot. The most common aerogel type is silicon aerogel. There are several types of aerogels including silicon, metal oxides, metals, and carbon. Aerogel, a compound term, is made up of aero as an adjective which means flying. Gel is obviously gel. Literally means flying gel. Any gel can be called aerogel, as long as the product can keep its shape and is able to be dried without losing the solvent.
Preparation of silica Aerogel
S. Kistler named Aerogel. S. Kistler was the first to name Aerogel. silica aerogel He defined aerogel by supercritical method as the material obtained from supercritically drying wet gel. Aerogel is defined by most people in the mid-to late 1990s with the advent and development of atmospheric dry technology. The aerogel structure is a multi-branched Nano-porous three-position network with high permeability. The bulk density of aerogel is adjustable between 0.003-0.500g/cm-3. The density of the air is 0.00129g / cm-3.

In most cases, the preparation of aerogel involves a sol gel process and a process of supercritical drying. Sol-gel is a process that involves controlling the conditions of hydrolysis and polycondensation in the solution. This allows for nanoclusters to be formed and then adhere together into a gel. To prevent damage to material structures caused by surface tension within the micropores, the gel is treated with the supercritical process. It is then placed in a vessel under pressure and heated to make the liquid change phase to supercritical fluid. Surface tension is no longer present. In this case, the supercritical liquid is removed from the pressure vessel. A porous, low density, disordered gas can be obtained with a continuous nano-scale network structure. Material gel.

As a thermal insulation material
The nano-structured silicon aerogel is able to limit the spread of local excitation. In addition, its thermal conductivity in solid state is 2 or 3 orders of magnitude less than glassy materials. Nano-pores prevent gas molecules from contributing to heat conduction. The silicone aerogel’s refractive indices is very close to one, and its annihilation factor for both infrared and visual light is greater than 100. It transmits sunlight well and blocks infrared radiation, making it a great transparent thermal insulation. It is used in the solar energy usage and energy-saving of buildings. The radiant heat conduction in silicon aerogel is further reduced by doping. At room temperature and under pressure, the thermal conductivity for carbon-doped aerospace gel can be as low 0.013 w/m K. This is the lowest solid thermal conductivity. As a replacement for polyurethane, it is expected that this material will be used to insulate refrigerators. Silicon aerogel, when combined with titanium dioxide, can become a new high-temperature thermal insulating material. Thermal conductivity of silicon aerogel at 800K only is 0.03w/mK. This material will be further developed for use in military products.
The low sound speed of the sonic wave is one of its main characteristics. silicon aerogel The material is ideal for acoustic delay and high temperature sound insulation. It has a wide acoustic-impedance range (103 – 107 kg/m2 s) and is a good acoustic resistance material for ultrasonic detection. As an example, the most commonly used acoustic turns Zp = 1 is a good example. It is possible to use ultrasonic generators or detectors that are 5 x L07 kg/ Piezoelectric m2*s. However, the acoustic resistant of air only is 400 kg/ m2*s. A silicon aerogel coupling material with a 1/4 wavelength thickness is used between piezoelectric m2*s and air. It can improve sound wave transmission efficiency and reduce signal-to noise ratio in device application. Experimental results indicate that using silica with a 300 kg/m3 density as a coupling medium can increase the sound by 30 dB. Silica aerogels with a density gradient can result in a greater increase in sound intensity.
Environmental protection and chemical industries. Aerogels with nanostructures can be used to filter gas in a different way. The material is unique in that it has uniform pore sizes and high porosity. It is an efficient gas filter material. It is a material that is much larger than a table. Aerogels have a wide range of applications as new catalysts and catalyst carriers.

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Aerogel is the name of a Nano-scale solid material made by the Sol-gel method. This method uses a drying method that replaces the liquid phase […]

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Development And Application of Boron Nitride Ceramic Materials

Boron nitride The crystal is a hexagonal crystal, similar in structure to graphite. Because of its performance similarities, it is often called “white Graphite”.
Boron Nitride is an excellent dielectric at high temperatures. It is an excellent heat dissipation and high temperature insulating material. Boron Nitride is chemically stable, and it can resist erosion of most molten metallic materials. It also has self-lubricating characteristics.

Boron nitride ceramics (BN) is a novel industrial material developed by the aerospace and electronic industries. It has many applications in production and industry.

Research on boron Nitride is currently focused primarily on the hexagonal phase of boron Nitride (hBN) and its cubic phase (cBN). Hexagonal Borosidria has good performance at high temperatures, as well as lubricity and thermal conductivity. Recent studies show that the hexagonal boron nitride is in a stable thermodynamic state at room pressure and temperature. It is still mainly used as a source of raw materials for the production of cubic boron-nitride. Cubic Boron Nitride is an artificially synthesized material with many application possibilities.

As a rule, hexagonal boron-nitride is used in the high temperature/high pressure method. The excellent properties of cubic boran nitride have attracted many scientists to research the synthesis of cubic boran nitride. The number of new preparation methods is endless, and they are all moving towards a low temperature, low pressure, simple, and feasible direction. The synthesis and use of nano boron ceramics has been a hot topic in recent years due to the growth of nanotechnology.

Hexagonal boran nitride has been called white graphite due to its similarity in crystal structure and physical and chemistry properties. Hexagonal boran nitride can be used to make sintered ceramics. H-BN ceramics are used widely in high-temperature insulating components, metallurgy, aviation, and atomic energy because they have good electrical insulation properties and low thermal coefficient. The superior performance of cubic boron-nitride makes it a popular raw material in the synthesis.

Ceramics containing boron-nitride exhibit excellent thermal stability, as well as dielectric properties. It is among the few compounds which can reach a temperature of decomposition. It exhibits excellent thermal and electric stability over a wide temperature spectrum. This type of ceramic is not currently used in the radome because it has low strength and hardness. It also has a high thermal conductivity.

In the field of materials science, boron is nitride is a highly preferred advanced ceramic material due to its superior mechanical characteristics. Due to the harsh conditions in the current synthesis, this has an impact on boron nitride’s application to some extent. This new synthesis method has been a major focus in the study of Boron Nitride. Select a reaction precursor with excellent thermodynamic properties and use them to reduce the temperature induced externally and the reaction temperature. This will allow you to control the morphology of the final product. Controlling the reaction conditions, and using the right reaction process, can affect the particle size and shape of the final product.

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Boron nitride The crystal is a hexagonal crystal, similar in structure to graphite. Because of its performance similarities, it is often called “white Graphite”. Boron […]

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A quick overview of molybdenum carbide

The properties of Molybdenum Carbide The chemical formula of Molybdenum carburide MoC is the molecular weight and it is 107.95.
Its melting point is 2692degC. It also has good mechanical and thermal stability. Its melting is 2692degC. Water and lye are insoluble. Nitric acid, hydrofluoric and sulfuric acids are slightly soluble.
The catalytic reactions of molybdenum carbide:
1. Hydrogenation Reaction
2. Hydrodesulfurization HDS, and hydrodenitrogenation HDN reactions;
3. Isomerization is a reaction.
4. Hydrocarbon conversion and Synthesis reaction
5. Applications in ammonia syntheses
Preparation of molybdenum carbide
Preparation principle: Mo+C- MoC
The two elements may be directly combined, or they can be prepared through the reaction of molybdenum oxide and molybdate under a reducing atmospheric at around 800degC.

Applications of Molybdenum Carbide
In terms of the global structure of consumption, molybdenum does indeed work with iron. Molybdenum demand in developed western countries is 80% from steel. Stainless and low-alloy metals absorb 30% of molybdenum while cast steel and drill bits absorb 10%. The remaining 20% is consumed by molybdenum chemicals and molybdenum lubricants, as well as petroleum refinery. The United States consumed 75% molybdenum in 1998.
Molybdenum-based materials are used increasingly in electronic, metal processing, and aerospace industries.
1. Molybdenum Alloy
TZM is the alloy with the highest strength and most comprehensive properties. The United States uses TZM for turbine disks in engines and molybdenum is used for 15% of total molybdenum. The production of molybdenum in my country, including TZM molybdenum alloy, is not less than 22 different grades. Early 1990s, my country’s production of molybdenum alloys and molybdenum materials was around 200 tons.
TZM & TZC Molybdenum Alloys offer superior mechanical properties to pure molybdenum. They are widely used for high-tech moulds, structural parts, and other high-tech applications. In the early 20th century, we were able to make hot-perforated plugs for seamless steel pipes. The sintered molybdenum sinter plugs manufactured using powder smelting reduce the raw material consumption (50%) and increase the average service life 1.5 to 2x.
The seamless tube of molybdenum alloy rhenium (containing 50% Re), has excellent high-performance and can be used near its melting temperature. It can also be used to make the brackets, rings, grids, and other parts for the thermowell as well as the cathode.
It is easier to process molybdenum than tungsten. Therefore, plates, strips, foils, etc. Tubes. rods. wires. profiles. etc. Used in electronic tubes, electric light sources, parts (support material), metal processing tool (die-casting dies and extrusions dies, forgings dies), perforated plugs and liquid metal filter screens, turbine discs etc. Used in many components.
2. Alloying components of steel
The use of molybdenum as an alloying component, along with nickel and chromium can help reduce embrittlement, which is often seen in alloy steels when heated. United States took the lead by using molybdenum in high-speed alloys instead of tungsten to solve the shortage of resources. Molybdenum, according to calculations has twice the “capacity”, of tungsten. The steel that contains 18% tungsten is replaced by steel that contains 9% molybdenum. Molybdenum’s role in stainless steel is to enhance corrosion resistance, strength and weldability. You can see that molybdenum has a major role to play in the steel sector.
Other Uses
Molybdenum exhibits a very low vapour pressure when working at the pressure and temperature of a vacuum furnace. Molybdenum is the material that causes the least contamination to the materials in the furnace.
Due to its high strength, molybdenum makes the ideal electrode in glass manufacturing. It is also the best material for processing and equipment when rapid heating occurs. Because molybdenum is chemically incompatible with most glass components, it will not produce harmful color changes due to the small amount of molybdenum that may be dissolved in a glass melting tank. As a heating electrode in a glass melt furnace, it can last up to 3 or 5 years.

(aka. Technology Co. Ltd. has over 12 years experience as a supplier and manufacturer of high-quality chemical materials. The Molybdenum carburide Please note that the products produced by our company are of high purity and have low impurities. Please. Contact us if necessary.

The properties of Molybdenum Carbide The chemical formula of Molybdenum carburide MoC is the molecular weight and it is 107.95. Its melting point is 2692degC. […]

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Iron II Nitride Chemical Formula

Iron ii nitride (FeN) is an important and well-studied compound of the transition metal pernitrides, exhibiting superconductivity and magnetism at low temperature. However, it is still not clear how nitrogen (N) species affect the physics of this material under high pressure conditions.

Previous structural studies have revealed that at low pressures, FeN crystallizes in a trigonal R-3m structure11, while above this threshold, an orthorhombic Pnnm phase becomes more favorable21,22. Both structures show N structural features, such as a dinitrogen unit and N-sharing six-fold FeN6 octahedrons (Figs S11,12).

However, these N features cannot explain the strong magnetism of FeN under HP. To address this issue, we performed extensive structure searches for stoichiometric Fe-N compounds using the CALYPSO unbiased particle swarm optimization algorithms for high-pressure prediction18.

We have found that in the N-rich Cmmm phase at 250 GPa, each N atom forms an s bond with two adjacent Fe atoms and three neighboring N atoms, and a 6x6x6 coordination decahedron with Np octahedra. This structure has N symmetry of 2c. The ELF plots of the Cmmm phase display a striking pattern: whereas 6x6x6 coordination characterizes the N-sharing octahedrons in the P-1 structure, 8x8x8 coordinate decahedra appear in the Cmmm phase.

This discovery of an N-rich structure with N symmetry indicates that nitrogen in the system is not just a simple substitution site for hydrogen. It also provides a new avenue to study the physics of N-rich nitrides under high-pressure conditions. This could open up a whole new class of materials with unusual properties.

Iron ii nitride (FeN) is an important and well-studied compound of the transition metal pernitrides, exhibiting superconductivity and magnetism at low temperature. However, it is […]

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GaN Chargers

gan chargers run cooler, making them more efficient at charging your laptop, tablet and mobile devices. They are also better at conducting electricity and can fit more power capability into a smaller brick. They are more efficient than standard power bricks and can reduce wasted energy dissipation, saving you money on your electric bill.

GaN stands for gallium nitride, and it is a semiconductor that offers device producers an alternative to silicon. It can work at higher thermal levels than silicon, and it can handle higher voltages over time. It can also conduct current much faster, which means that it is easier for chips to transfer power. gan chargers are a new technology that uses these chips, and they offer several benefits for both manufacturers and consumers.

For consumers, gan chargers can be cheaper than silicon chargers because they use fewer parts and require less power to operate. They can also save you money on your power bill because they are more efficient and use less energy than normal chargers.

AppleInsider has tested a handful of gan chargers, including the Ugreen Nexode 140W. The small charger can quickly charge your laptop and mobile devices at high speeds, which is a huge benefit if you’re on the go. Its compact size and foldable prongs make it easy to carry. It supports USB-C PD and other fast-charging technologies, which enable the chargers and your devices to talk to each other and determine the optimum amount of power needed.

gan chargers run cooler, making them more efficient at charging your laptop, tablet and mobile devices. They are also better at conducting electricity and can […]

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Is the water-based zinc stearate emulsion easy to use as a release agent?

Why is zinc stearate water-based emulsion used? The aqueous zinc-stearate emulsion is also known as aqueous zinc-stearate. Zinc Stearate Emulsion This dispersion is white and has a slippery feel. Zinc Stearate Emulsion is an ultra-fine lubricant, easily dispersed in water-based paints, quickly drying, defoaming and has good thermal resistance. It is a versatile product that can be used in a number of ways, such as a release agent or color retention agent. Material Co., Ltd. provides zinc stearate in emulsions with a solids level of 40%.
The release agent is now a crucial industrial raw-material in industrial production. It has played an important role in mold shaping and in improving the appearance and quality industrial products. Different release agents are needed for different mold materials.

Are there different types of common mold release agents available?
1. Use the Release Agent
There are different types of internal and external mold release agent. There is a large price difference between the materials used in the external and internal mold releases. The mold release can be applied directly with the external release agent. On the mold, an internal mold release is a chemical compound whose melting temperature is lower than normal molding temperatures. During thermoforming, the internal molding release agent is added and mixed in with the resin. (Note : Compatible with liquid and solid resins) Then, under certain conditions of processing temperature, the internal release can seep through the resin matrix and form a thin, insulating film between the mold with the product. This has a releasing effect.
2. Combination of release agent
Compound mold release and single mold releases. Compound mold releases include both compound and component components in their use. Sometimes composite and one-mold release agents have a significant price and performance. difference;
3. The release agent’s temperature can be classified into
The release agents are classified as high temperature release agents and normal temperature release agents.
4. Reuse of release agents
Mold release agents are classified as semi-permanent or consumable, based on their service life.
5. Release agent performance
The chemical composition of solvent-based, water-based, and oilbased mold-release agents is different, leading to different properties. Emulsion of zinc stearate This is a water based mold releaser.

What is the application of zinc stearate Emulsion?
Zinc Stearate Emulsion is suitable for use as a thickener, heat stabilizer, lubricant or grease. As an example, it is commonly used as a PVC resin heat stabilizer. It can be used for industrial products that are transparent. Useable for non-toxic materials.
1. Rubber industry uses release agents, release agents, active agents etc.
2. Use of internal release agents in plastics
3. Applications in the coating sector: color retention agents, fillers, and also used in coating, sandpaper industries, etc.
4 . Use in plastics, paint and the automotive industry: Grinding aid
5. Suitable for cosmetics: lubricant

Which nanomaterials manufacturer can be trusted?
(aka. Technology Co. Ltd., a trusted global chemical supplier & manufacturer has over 12 years experience in providing high-quality Nanomaterials and chemicals. Currently, we have developed a successful series of powdered materials. Our OEM service is also available. If you’re looking for Emulsion of zinc stearate Please contact us. Please click on Needed products Send us a message.

Why is zinc stearate water-based emulsion used? The aqueous zinc-stearate emulsion is also known as aqueous zinc-stearate. Zinc Stearate Emulsion This dispersion is white and […]

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What is the Boiling Point of Liquids?

The boiling point of a liquid is the temperature at which its saturated vapor pressure equals atmospheric pressure. The liquid transforms into a gas at this point, and its vapor forms bubbles that rise out of the liquid. This process is the basis of the Celsius scale (which was based on ice water’s melting and boiling points), and it also allows us to separate materials by their boiling points.

Many factors influence the normal boiling point of a substance, with the most important factor being its molecular structure and intermolecular attractions. Liquids with weaker intermolecular bonds boil at lower temperatures. For example, ethanol has weaker hydrogen bonds than butane, and thus its boiling point is lower.

Another factor that influences the boiling point is the presence of dissolved impurities, or solutes. Solutes are compounds of a different chemical type from the solvent that increase or decrease the volatility of the solvent in proportion to their concentration.

Lastly, the boiling point of a liquid can vary depending on its elevation. This is because the air pressure at higher elevations is less dense than at sea level.

The boiling point of a liquid can be determined experimentally by using a measured volume of the substance, a container to heat it in, a thermometer to measure the temperature, a barometer to monitor the air pressure, and a GPS to determine the elevation above sea level. Then, the temperature of the liquid is slowly increased until it reaches its boiling point.

The boiling point of a liquid is the temperature at which its saturated vapor pressure equals atmospheric pressure. The liquid transforms into a gas at […]

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Titanium Carbide overview and its application

Titanium Carbide: An Introduction The chemical formula of Titan carbide TiC is a gray, metal-like, solid with a face centered cubic lattice. Its molecular weight (59.89) is also 59.89. The melting temperature of titanium carbide ranges from 3140+90degC to 4820degC. Its relative density is 4,93 and its hardness is higher than 9.
Titanium carbide, while insoluble in water is soluble with nitric acids and aqua regia. It is stable when the temperature is below 800. However, when the temperature is above 2000 it will be corroded.
Carbonized TiO2 and TiO2 powders are heated in electric furnaces to 2300-2700degC.
Titanium carbide, which can be used in the manufacture of hard alloys as well as for arc lamp electrodes and abrasives, can also serve a variety of purposes.
Titan carbide can be prepared in several different ways
Reduce carbothermic toxicity using a reduction method
Use carbon black to reduce the TiO2 – the temperature range for this reaction is between 1700-2100. The chemical reaction formula:
Direct Carbonization
Ti powder and carbon dust react to form TiC. The chemical reaction formula: Ti(s),+C(s),=TiC. The application of this method will be limited because it’s difficult to make sub-micron Ti powder. The reaction above takes between 5 and 20 hrs to complete. The reactants agglomerate and require additional grinding processes to achieve fine particles. Granular TiC powder. After ball milling, it is important to chemically purify the fine Powder to get a purer product.
Chemical vapor deposition
The synthesis method uses the reaction between TiCl4, and H2 and C. TiC The monofilament is soaked with crystals. The TiC produced by this method is subject to strict limitations on output, and in some cases even quality. It is important to be cautious when synthesizing TiCl4 because the HCl it contains can be very corrosive.
Microwave method
Use microwave energy to heat nano-TiO2 and carbon as raw materials. The dielectric loss in the material is used to convert microwave energy to heat energy.
Blast impact method
Preparing the precursor requires mixing the titanium dioxide powder with the carbon powder in a specific proportion. The powder density is set at 1.5g/cm3, the outer cylinder is made of metal, and the laboratory placed inside. It is then placed in an airtight container made by yourself for the experiment. The detonation powder will be collected after the explosion. After sieving the black powder, impurities like iron filings and large particles are removed. The black powder is soaked in Aqua Regia for 24hrs, then calcined 400degC at 400minutes to produce a silver-gray color.

High-temperature self-propagating synthesis
(SHS) SHS is derived by an exothermic process. When heated at the right temperature, fine-grained Ti Powder has a high degree of reactivity. The combustion wave produced after ignition will pass through Ti and the C reactants, and the reaction heat generated by Ti and the C will generate TiC. SHS has a reaction time of less than one second. The synthesis requires fine, high-purity Ti powder for the raw material and output is limited.
Reaction ball grinding technique
The reactive ball milling technique is a method that utilizes the chemical reaction of metal or alloy powder with other elements or compounds during the ball milling to prepare required materials. Reactive ball milling is used primarily to prepare nanomaterials using a high energy ball mill. The reaction ball grinding mechanism can be divided in two categories: the first is the mechanically induced high-temperature self-propagating synthesis reaction (SHS), while the second is the reaction ballmilling with no obvious exotherm and a slow reaction process.
Uses of titanium carbide
1. Use as an additive for metal bismuth and zinc melting crucibles and to prepare HDD large capacity memory devices and wear-resistant semiconductor films.
2. This is a component of cemented carburide used as a steelmaking deoxidizer.
3. As cermet it is known for its high hardness, corrosion-resistance, and thermal stability.
(aka. Technology Co. Ltd., a trusted global chemical supplier and manufacturer has over 12 years experience in providing high quality chemicals and nanomaterials. The titanium carbid Please note that the products produced by our company are of high purity and have low impurity. Please. Contact us if necessary.

Titanium Carbide: An Introduction The chemical formula of Titan carbide TiC is a gray, metal-like, solid with a face centered cubic lattice. Its molecular weight […]

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