The European Medicines Age ncy (EMA) said on Tuesday it had begun a "rolling review" of Pfizer and BioNTech's Novel Coronavirus booster vaccine.…
In the past two months, on the background of weaker demand expectations, international crude oil prices have fallen by more than 20%. Analysts said that the poor macro data of major overseas economies, under the expectation of economic recession, cru…
Silicon carbide(SiC)is a lightweight ceramic material with high strength properties comparable to diamond.The microscopic shape of silicon carbide powder is hexagonal crystals.…
Silicon carbide is used to make bulletproof armor.…
The chemical formula TiC has a molecular weight of 59.89.Grey powder,usually used for making cemented carbide,also used as electrode and abrasive of arc lamp.…
Sodium myristate is ultra fine white powder, it has excellent lubricating, dispersing and emulsifying ability.…
Lithium stearate is a chemical, also known as lithium octadecate, white powder or colorless crystal, widely used in high temperature lubricants.…
Cuprous oxide is a bright red powder, almost insoluble in water, decomposed into divalent copper and copper in acidic solution, and gradually oxidized into black copper oxide in humid air. Commonly used as a pigment, biocide and antifouling agent in…
Potassium stearate is a fine white, fluffy powder. It has a smooth feel, no sand, and has a fatty smell. It is soluble in hot water or alcohol.…
Diamond is a mineral composed of carbon, an allotrope of carbon. Diamond nanopowders are used in electronics manufacturing, jewelry, textiles, corrosion-resistant coatings, as enhancers for various substances, in the manufacture of synthetic diamonds…
Silicon carbide (SiC) is a lightweight ceramic material with high strength properties comparable to diamond. Nano-silicon carbide has excellent thermal conductivity and is also a kind of semiconductor, which can resist oxidation at high temperature a…
Lithium 12-hydroxystearate is widely used in lubricants, stabilizers, bleaching agents, and thickening agents.…
Copper oxide,chemical formula CuO. It is a black oxide of copper,slightly amphoteric and slightly hygroscopic.The relative molecular mass is 79.545,the density is 6.3～6.9 g/cm3,and the melting point is 1026℃.…
Boron nitride is a crystal composed of nitrogen atoms and boron atoms.The chemical composition is43.6%boron and56.4%nitrogen,with four different variants:hexagonal boron nitride,rhombohedral boron nitride,cubic nitride Boron,and wurtzite boron nitrid…
Silicon nitride ceramic materials have excellent properties such as high thermal stability, strong oxidation resistance, and high dimensional accuracy.…
Monel alloy is a kind of nickel-copper alloy.…
In terms of the adaptability of cement and concrete superplasticizer, the type and quality of concrete superplasticizer also play an important role. Therefore, concrete superplasticizers should be selected according to the adaptability to cement and…
Boron Carbide is one of the three hardest materials known, it is not affected by hot hydrogen fluoride and nitric acid. Soluble in molten alkali, insoluble in water and acid.…