It is known that the hydrolysis rate of the silane coupling agent is taken from the silicon energy group Si-X, and the reactivity with the organic polymer is taken from the carbon functional group C-Y. Therefore, it is important to select a suitable silane coupling agent for different substrates or treated objects. The method of selection is mainly through trial pre-selection and should be carried out on the basis of existing experience or regularity. For example, in general, unsaturated polyesters are mostly selected from silane coupling agents containing CH2=CMeCOO, Vi and CH2-CHOCH2O-; epoxy resins are mostly selected from CH2-CHCH2O and H2N-silane coupling agents; H2N- and H2NCONH-silane coupling agents are used; polyolefins are selected from vinyl silane; and sulfur-sulfurized rubbers are mostly hydrocarbyl silanes. The adhesion between dissimilar materials can be affected by a number of factors, such as wetting, surface energy, interfacial layer and polar adsorption, acid-base action, interpenetrating networks, and covalent bond reactions. Therefore, the pre-selection of the test is sometimes not accurate enough, and the composition of the material and its sensitivity to the reaction of the silane coupling agent are also considered. In order to improve hydrolytic stability and reduce the cost of modification, a silane coupling agent may be incorporated into a trihydrocarbylsilane; for a non-sticky material, a polymer crosslinked by a silane coupling agent may also be used. When a silane coupling agent is used as a tackifier, it is mainly achieved by chemical bonds and hydrogen bonds with the polymer; wetting and surface energy effects; improving polymer crystallinity, acid-base reaction, and formation of an interpenetrating polymer network. of. The viscosity-increasing mainly consists of three kinds of systems: (1) inorganic materials versus organic materials; (2) inorganic materials versus inorganic materials; and (3) organic materials versus organic materials. For the first type of bonding, it is usually required to bond the inorganic material to the polymer, so the reactivity of Y in the silane coupling agent with the functional group contained in the polymer should be prioritized; the latter two are bonded between the same type of materials. Therefore, the anti-hydrophilic polymer of the silane coupling agent itself and the silane coupling agent selected when the inorganic material is required to be tackified.