2022 | VICHEM - Part 3

10 Aug

Preparation of boron carbide nano powder and its epoxy coating

Boron carbide is a kind of super-hard compound in nature. In normal state, its hardness is second only to diamond and cubic boron nitride, and it is hardest at high temperature (about 1000 degrees Celsius). At the same time, boron carbide is a kind of P-type semiconductor with excellent thermal conductance. Most importantly, it is particularly resistant to acid and alkali corrosion. Because of various advantages, the industry has been trying to use boron carbide as a coating material. But [...]

Silicotungstic acid can be used as a launching agent for isotope analysis of trace strontium

Strontium isotope ratio (87Sr/86Sr) is widely used in the fields of earth science, astrochemistry, environmental chemistry, food origin traceability, archaeology and so on. Thermoionization mass spectrometers (TIMS) have been regarded as the benchmark technique for 87Sr/86Sr ratio analysis since the 1960s. This method not only has excellent accuracy, but also has extremely high sensitivity. Excellent sensitivity is the prerequisite for high precision 87Sr/86Sr ratio analysis of ultramicro samples. The key to improve the sensitivity lies in the selection of [...]

Thermoelectric Bismuth telluride: Where did it come from? Where to?

Thermoelectric materials can convert two of the most widely used forms of energy, heat and electricity, into each other: By converting electric energy into heat energy, solid refrigeration and temperature control can be realized. Thermoelectric materials have been used in small refrigerators, wine cabinets, high power laser temperature control equipment, and is also expected to be used in the future communication technology temperature control. The heat energy is converted into electric energy, and the temperature difference generation can be realized. With [...]

Trade News Read more...

15 Jul

Effect of potassium titanate on friction properties of NAO

NAO friction material has still become the most popular disc brake pad material. With the increasing maturity of friction material industry, the raw material market has also changed with each passing day. The application of potassium titanate also provides a new path for the development of friction materials. In this study, a single factor comparative experiment was adopted. By adjusting the ratio between potassium titanate and barite powder, the increasing gradient of potassium titanate was 2% (mass fraction, and [...]

Technical Support Read more...

09 Jul

Reliable nickel cobalt manganese ternary lithium battery

With the widespread popularity of electric vehicles, a lot of friends have been asking questions about power batteries. Shock, as an adventurer, can ignore anything else, but he attaches most importance to the reliability of his adventure equipment. I’m here today with a good friend of mine to talk to you about power batteries. Hi, I am the star member of the power battery family, Manganese, or NCM. The history of our power battery family dates back to 1837. At [...]

Trade News Read more...

03 Jul

Nano-europium oxide catalyzed lignin oxidation

Lignin is the only large-scale renewable source of aromatic compounds, and has the advantages of being inedible, widely available and cheap. A wide range of aromatic aldehydes, acids and esters can be obtained by directional catalytic oxygenation of polylignin. Catalysts are the key to directional catalytic depolymerization of poly (lignin). Rare earth oxides show unique properties in catalytic oxidation reaction, but the performance of nano rare earth oxides in polyphase catalytic depolymerization of lignin is rarely reported. In this [...]

Nano magnesium carbonate market prospect

As we know, nano magnesium carbonate is a chemical raw material with a wide range of applications. The market has a large space for development, with varying degrees of growth every year. Therefore, high-grade and refined magnesium carbonate products need to be developed in order to be used in more high-grade industries. Nano magnesium carbonate is not only used in medical and food fields, but also used in rubber, glass, ceramics and other industries. As the demand continues to rise, [...]

Trade News Read more...

11 Jun

A modification method of nano-samarium oxide MC nylon

MC nylon is a new type of engineering plastic, which is made of caprolactam as the main raw material by anion polymerization under atmospheric pressure. MC nylon is gradually replacing copper, aluminum, steel and other metal materials and is widely used in textile, rubber, petrochemical, steel rolling, mining machinery, automobile, elevator, crane and other industries. But compared with metal, MC nylon has some disadvantages such as lower strength, modulus and thermal deformation temperature, larger water absorption rate and poor [...]

Technical Support Read more...

04 Jun

Main uses of hafnium carbide powder

Hafnium carbide (HfC) is a gray black powder, belonging to the face-centered cubic structure, with a very high melting point (3890℃), is known in the single compound with the highest melting point, is a good material for high melting point metal crucible lining. Hafnium carbide has high elastic coefficient, good electrical and thermal conductivity, very small thermal expansion coefficient and good impact resistance, very suitable for rocket nozzle material field, is also an important metal ceramic material. Hafnium carbide is a [...]

Technical Support Read more...

29 May

Preparation and application of magnesium nitride

Chemical formula of magnesium nitride Mg3N2, greenish yellow powder or lump, relative density of 2.712, decomposition at 800℃, sublimation at 700℃ in vacuum, magnesium nitride as ionic compound, rapid hydrolysis in water. Soluble in acid, insoluble in ethanol: magnesium nitride is widely used. Magnesium nitride is an indispensable sintering agent in the solid state reaction of boron nitride and silicon nitride, which are new ceramic materials with high hardness, high thermal conductivity, wear resistance, corrosion resistance and high temperature [...]

Technical Support Read more...

Yearly Archives - 2022