Home | About Us

Silane Coupling Agent

Home | News


The use of silane coupling agent which has several

Silane coupling agent to use:

⑴ surface pretreatment method dubbed dilute solution of a silane coupling agent 0.5-1% concentration, just a clean surface is coated with a thin layer of adhesive, when used, can be the glue dried. Solvents used are water, an alcohol, water or a mixture of alcohol, water and non-fluoride ion inexpensive and non-toxic alcohol, isopropyl alcohol is appropriate. In addition to ammonia hydrocarbyl silanes, silane coupling agent prepared by another solution of acetic acid as hydrolysis catalyst required is added, and the pH adjusted to 3.5 to 5.5. Long-chain alkyl and phenyl silane due to poor stability, not dubbed in aqueous solution. Acetoxy silane and chlorosilane hydrolysis process is accompanied by severe condensation reaction, and it is not formulated in aqueous or aqueous alcohol solution used, while the use of multiple paired alcoholic solution. Poorly water-soluble silane coupling agent can be added to 0.1 to 0.2% (by mass) of the non-ionic surfactant, and then add water processed into an aqueous emulsion use.

⑵ silane coupling agent is added directly to the adhesive component, it is generally added in an amount of 1 to 5% of the amount of the base resin. After the glue rely on diffusion of molecules, molecules migrate to the coupling generated at the bonding interface coupling effect. The need for curing adhesive, glue should be placed after a period of time to be cured, so that the coupling agent to complete the migration process, in order to obtain better results.

Actual use, coupling agents are often formed in the surface layer of a deposit, but only a single molecular layer that really works, thus, do not have too much coupling agent.