Silane-blocked polyether sealant and preparation method and application thereof

Abstract

The invention belongs to the technical field of sealants, and particularly relates to a silane-blocked polyether sealant and a preparation method and application thereof. The sealant is prepared from,by mass, 10-35% of silane-blocked polyether, 10-30% of a plasticizer, 45-60% of solid powder, 1.0-2.5% of a water removal agent, 0.5-2.0% of a coupling agent, 0.5-3.0% of an accessory additive and 0.05-1.0% of a catalyst. The silane-blocked polyether sealant prepared by using the method is uniformly dispersed, moderate in strength, high in elongation rate, high in elastic recovery rate, excellentin adhesion, environmentally friendly, high in biocompatibility and capable of meeting market requirements in the assembly type construction industry.

Description

technical field

[0001] The invention belongs to the technical field of sealants, and in particular relates to a silane-terminated polyether sealant and its preparation method and application. Background technique

[0002] In 1978, MS glue was developed and launched by Japan Zhongyuan Chemical Industry Co., Ltd., and it was popularized and applied in large buildings and achieved good results. In the 1990s, the German Wacker Company invented silicon-terminated polyurethane resin, which adopted Wacker's unique α polymerization technology, which is more suitable for the European market. Many domestic companies have also developed different types of sealants according to market demand, but due to the gap in the quality of raw materials, the performance of sealants varies greatly.

[0003] The comprehensive properties of silane-terminated polyether sealants are superior, showing excellent weather resistance, durability, high resistance to deformation and displacement, good adhesi...

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