A new type of superplasticizer polyoxyethylene-ether macromonomer is known as concrete water reduction. This superplasticizer uses polyoxyethylene ether macromonomer as well as unsaturated and sulfonic acids group monomer through radical polymerizati…
Superplasticizer used in concrete refers to the fact that after mixing, it can reduce the water demand of concrete under the condition of maintaining basically the same fluidity, thereby improving the strength and durability of concrete, or under the…
According to the United Nations website, in the past week, countries reported an 8% increase in new crown cases to the WHO, with more than 11 million positive tests. Tedros noted that although some countries hav…
Chemical formula: Se. Black-gray non-metallic. It is soluble in concentrated sulfuric and chloroform. Purity>99%Particle sizes are 200, 100 and 325 mesh. HTML3_ HTML3_ Selenium can be described as a chemical formula. Selenium metallic dust is dark…
Since April of 2020, the trend of rising oil prices has been maintained, and it is rising globally. The reason for this phenomenon may be that the global economy is slowly recovering, or it may be that last year epidemic has been well controlled. The…
NSP-3 molecularsieve is a crystal silicon aluminate that has developed a 3-D pore structure, and strong polarity. It exhibits strong adsorption of CO2 (mercaptan) molecules. NSP-3 Molecular Sieve NSP-3 molecularsieve is a crystalline silica alum…