quality Fluorosilane coupling agent from China According to the chemical structure, it can be generally divided into: silane coupling agent, titanate coupling agent and other coupling agents. In general, the functional groups at both ends of the coupling agent react with the dispersed phase of the filler and the matrix polymer respectively. Due to different fillers, the coupling effect varies greatly.
For fillers with thiol groups on the surface, the coupling effect of quality Fluorosilane coupling agent from China is great, but for carbonates, sulfates, and sulfites of calcium, magnesium, and barium, the coupling effect of silane coupling agents is not good. too obvious. If the surface of filler particles without thiol groups is treated with silica hydrosol, and then quality Fluorosilane coupling agent from China is used, a better coupling effect will be produced. This treatment method is called double coating Law.
Both the titanate quality Fluorosilane coupling agent from China and the aluminate coupling agent can treat the surface of the filler, but the treatment effects are specific to each other. For example, fillers with better treatment effect of titanate coupling agent include calcium carbonate, barium sulfate, calcium sulfate, calcium sulfite, aluminum hydroxide, magnesium hydroxide, calcium silicate, aluminum silicate, titanium self-powder, asbestos, oxide Aluminum, ferric oxide, lead oxide, ferrite, etc.;
Fillers with slightly inferior treatment effects include mica, silica, magnesia, calcium oxide, etc.; fillers with poor treatment effects include talcum powder, carbon black, and wood powder; fillers with almost no effect include graphite, magnetic powder, clay, general pigments, etc. . However, it should be determined according to the specific species, brand, dosage, etc. of the quality Fluorosilane coupling agent from China.