一种低模量硅烷改性密封胶及其制备方法
By combining reactive liquid flame retardants with terminal silane polyethers in sealants to form a cross-linked network structure, the problems of flame retardancy and resilience of sealants are solved, resulting in a building sealant with low modulus and high flame retardancy.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- CHENGDU GUIBAO SCI & TECH
- Filing Date
- 2023-11-17
- Publication Date
- 2026-07-17
AI Technical Summary
Existing building sealants are difficult to combine good flame retardant properties and resilience at the same time, and the addition of conventional flame retardants will affect the mechanical properties and elastic recovery rate of the sealant.
A reactive liquid flame retardant is combined with terminal silane polyethers, fillers, thixotropic agents, etc., and stirred and end-sealed under vacuum conditions to form a cross-linked network structure, thereby improving the flame retardant effect and elastic recovery rate of the sealant.
A low-modulus silane-modified sealant was prepared, with a flame retardant rating of V0, a tensile modulus of less than 0.4 MPa, and an elastic recovery rate of ≥80%, which is suitable for sealing and bonding of joints in the exterior walls of prefabricated buildings.
Smart Images
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