When plastics are modified, polymers are mostly mixed with multiple components, and then a certain amount of inorganic minerals are added for melt mixing processing. There is a lack of affinity between some polymer molecules and between polymers and inorganic fillers. Simple blending cannot achieve the purpose of enhancing performance, and even has the opposite effect. In order to improve this situation, it is essential to add a certain amount of silane coupling agent to the formula, because there are two different chemical groups in the molecular structure of the coupling agent, one is the inorganic group, and the other is the It is an organic group, the inorganic group of the coupling agent combines with the surface of the filler, the organic group entangles or reacts with the polymer resin, and uses its unique molecular bridge performance to make the surface properties of the inorganic filler and the high Compatibility with molecular materials can greatly improve the heat resistance, wear resistance, corrosion resistance, water resistance and processing performance of plastics, so silane coupling agents have become key additives for plastic processing and are also an indispensable chemical Auxiliary.