Environment-friendly alcohol type adhesive for silicone sealants and modified silicone sealants, and preparation method thereof

Abstract

The invention relates to an environment-friendly alcohol type adhesive for silicone sealants and modified silicone sealants, and a preparation method thereof, belonging to the technical field of titanate chelate vulcanization accelerators. The alcohol type adhesive is prepared from a titanium catalyst, a cross-linking agent, a tin catalyst, a stabilizer, an anti-aging agent, a coupling agent, a complexing agent and a viscosity eliminating agent according to a mass ratio of (8-17): (40-70): (0.01-10): (0.5-10): (1-5): (1-15): (1-10): (0.1-5). The alcohol type adhesive prepared according to sucha formula and the method disclosed by the invention has the characteristics that 1, the stability of the adhesive is good, a crystallization phenomenon does not exist when the adhesive is stored in anormal-temperature storage box, and the problem that the appearance and the physical properties of sealants are influenced due to crystallization and agglomeration of the sealants after the adhesiveis used in the silicone sealants; 2, the catalytic activity of the adhesive is more outstanding, the curing rate, the viscosity eliminating time and the after-tack condition of the silicone sealants using the adhesive are obviously improved, and the problems of foaming, wrinkling and yellowing of the sealants can be better prevented and solved, and the storage life of the silicone sealants is prolonged; 3, the environment-friendly performance of the adhesive is good, production efficiency is high, and preparation process is simple and feasible.

Description

technical field [0001] The invention relates to an environment-friendly alcohol adhesive for silicone and modified silicone sealants and a preparation method thereof, belonging to the technical field of titanate chelate vulcanization accelerators. Background technique [0002] In the early stage of the development of silicone sealants, the product types were mainly deacetic acid type and alcohol type. Alcohol type adhesive additives were widely used. , secondary titanium complexes, crosslinking agents, coupling agents and dibutyltin dilaurate; the second category is mainly mixed titanium complexes, crosslinking agents, coupling agents and dibutyltin dilaurate. The first type of production process is relatively cumbersome. Titanium complexes need to be produced separately and compounded according to a certain ratio before adding a crosslinking agent. When using silicone sealants, additional coupling agents and dibutyltin dilaurate should be added. Exposure to air for a long ...

AI Technical Summary

Problems solved by technology

The first type of production process is relatively cumbersome. Titanium complexes need to be produced separately and compounded according to a certain ratio before adding a crosslinking agent. When using silicone sealants, additional coupling agents and dibutyltin dilaurate should be added. Exposure to the air for a long time will easily cause poor appearance of the sealant and hydrolysis of the additives.

Compared with the first category, the second category saves the separate production process of titanium complex, but the use method of silicone sealant is the same as that of the first category, which will also cause hidden dangers in the quality of the sealant.

[0003] In addition, because the existence of alcohol-type additives can easily lead to quality factors such as foaming, wrinkling, yellowing and short storage period of silicone sealants, deketoxime-type additives gradually replace dealcohol-type additives and de-acetate-type additives , the production of silicone sealants with deketoxime additives releases butanone oxime during use, which emits an unpleasant smell, seriously affects the living environment, and is harmful to the human body. It has been banned in Europe