Lightweight foamed concrete, also known as foamed cement, is a lightweight porous concrete product made from foaming agent aqueous solution into foam, and then adding foam to the slurry made of cement-based cementitious materials, aggregates, admixtu…
Russian President says if the European Union imposes an oil embargo, Europe will buy energy at the most expensive price and economic activity in Europe will weaken. Rosneft needs to change its business model. Russia will help facilitate settlement an…
After Russia pledged to scale back its military operations around Kyiv and in northern Ukraine, the prices of most industrial metals fell, led by aluminum, showing people's concerns for supply shortage eased.At an earlier time, the West imposed sweep…
The combination of silicon and carbon gives silicon carbide excellent mechanical, chemical and thermal properties.…
The biggest immediate challenge for the EU will be replenishing its depleted gas inventories. While the EU could still increase LNG imports from countries such as the US, such purchases would be more expensive.Refilling natural gas storage space to h…
The open-cell foam concrete is an excellent sound absorption material, while the closed-cell foam concrete is an excellent sound insulation material.…
A recent poll in Britain found that public support for sanctions against Russia is falling as fuel and prices rise. The proportion of people willing to accept higher fuel prices as a result of western sanctions against Russia fell 14 percentage poin…
About Silicon Nitride Si3N4 Powder:The silicon nitride composition is silicon and nitrogen. Si3n4 is the most thermodynamic stable in silicon nitride. It is white solid with a high melting point, relative chemical inert, diluted HF and hot H2SO4 atta…
Hasad Foods, the agricultural investment arm of Qatar's sovereign wealth fund, said the government would increase its grain reserves from 250,000 tons to 300,000 tons in the near future, which is enough to feed the population for six months. With a…
International oil prices extended their decline after comments from Federal Reserve Chairman Jerome Powell added to concerns that U.S. interest rate hikes will slow economic growth and data from the American Petroleum Institute showed U.S. crude inve…
Under the premise of ensuring the quality of concrete, early strength agent can greatly shorten its final setting time, make it as early as possible, and then accelerate the turnover of template, save template dosage.…
Last week, the domestic scrap market is weak adjustment, merchants are cautious in receiving goods, inventory remains low, the arrival of steel slightly increased, but the weak demand for scrap is difficult to change, scrap market continues to mainta…
Is boron amorphous or crystalline?Boron can be prepared in several crystalline and amorphous forms. The well-known forms of crystallization are α-rhombohedral (α-R), β-rhombohedral (β-R) and β-tetragonal (β-T). In spec…
What is copper oxide?Copper oxide is an inorganic substance. Copper oxide chemical formula is CuO. It is a black oxide of copper. Slightly bisexual and slightly hygroscopic. Insoluble in water and ethanol, easily soluble in acid, thermally stable, de…
Expandable graphite or exfoliated graphite is made from the naturally occurring mineral graphite. The layered structure of graphite allows molecules to be inserted between the graphite layers. By adding acid, graphite sulfate can usually be converted…
What is the use of aluminum oxide?Medical professionBecause of its hardness, bioinertia and chemical properties, alumina is the preferred material for hip replacement bearings, such as prosthetics, bionic implants, prosthetic eye substitutes, tissue…
Aluminum nitride is a kind of refractory composite ceramic material with hexagonal wurtzite structure. Pure aluminum nitride is blue-white, and aluminum nitride ceramic is usually gray or white. Aluminum nitride is stable at high temperature in inert…
Silicon nitride ceramic materials have excellent properties such as high thermal stability, strong oxidation resistance, and high dimensional accuracy.…