aochengchem: The application of silane coupling agent

Silane coupling agent of different plastics and filler system coupling effect is different. Commonly used, for example, three different stearic acid isopropyl ester, acyl titanium for calcium carbonate filled polypropylene, polyethylene, polystyrene can significantly improve the impact resistance, and the glass fiber reinforced polyester or epoxy resin, chooses gamma - methyl acryloyl need oxygen radicals propyl silane, three oxygen radicals can significantly improve the mechanical strength. Therefore, we should fully consider and main use resin, filling system, to select the best coupling agent.In order to produce the best effect selected coupling agent, still should according to certain operating conditions for filling agent processing.Usually, according to the solubility and stability of the coupling agent, the mixture solution or the solution of methanol, ethanol, acetone, etc, under proper temperature mixed with inorganic filler, join other additives in succession again, to ensure that coupling agent on the surface of the fillers, uniform distribution, to avoid interference between additive.Ester titanate coupling agent should avoid as far as possible with plastic additives and surface activity, so as not to interfere with the coupling reaction. At the same time, most titanate can occur in different degrees and esters plasticizer of ester exchange reaction, therefore, esters plasticizer in coupling agent and the synthetic resin and filler mix and coupling effects to join.Ester titanate coupling agent and silane coupling agent and can produce synergies.