高强型防霉MS密封胶及其制备方法

By combining MS prepolymer grafted with antifungal agents with nano-calcium carbonate and fumed silica in MS sealant, the problems of easy loss of antifungal agents and insufficient mechanical strength are solved, achieving a balance between high strength and high antifungal properties.

CN122104119BActive Publication Date: 2026-07-17SHANDONG LECHAO NEW MATERIAL TECH CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANDONG LECHAO NEW MATERIAL TECH CO LTD
Filing Date
2026-04-27
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing MS sealant does not maintain its anti-mildew properties in humid environments, the physically added anti-mildew agents are easily lost, and it is difficult to balance high strength and high flexibility in terms of improving mechanical strength.

Method used

A high-strength anti-mildew MS sealant was prepared by grafting an anti-mildew agent onto the side chain of the polyether backbone through a maleimide-thiol click chemistry reaction, combined with active nano-calcium carbonate and fumed silica reinforcement.

Benefits of technology

This method achieves permanent anchoring of the anti-mold agent, improves the mechanical strength and anti-mold performance of the sealant, avoids the problem of anti-mold agent loss in traditional methods, and maintains the material's curing cross-linking ability and mechanical properties.

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Abstract

本发明属于密封胶技术领域,具体涉及高强型防霉MS密封胶及其制备方法。本发明中MS密封胶按重量份数计包括:防霉剂接枝MS预聚物100~120份、活性纳米碳酸钙80~100份、气相二氧化硅5~15份、除水剂2~4份、偶联剂1~3份、螯合锡催化剂0.1~0.5份;防霉剂接枝MS预聚物为双端硅烷氧基封端、侧链通过马来酰亚胺‑巯基点击化学反应接枝异噻唑啉酮防霉基团的聚醚预聚物;本发明通过化学键将防霉剂永久锚定于聚合物主链,解决了防霉剂迁移流失问题;马来酰亚胺缩水甘油醚单体的引入提升聚醚分子链段刚性,使密封胶兼具长效防霉性能和高拉伸强度,可广泛应用于对防霉和力学性能要求苛刻的领域。
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