Pyrotechnic circuit breaker comprising a polyphthalamide-based polymer composition

By using a polymer composition containing semi-crystalline polyphthalamide, glass fiber, and non-halogenated flame retardants, the problem of insufficient structural integrity and insulation of pyrotechnic circuit breakers in explosive environments has been solved, achieving a high-performance lightweight design.

CN122422418APending Publication Date: 2026-07-17SOLVAY SPECIALTY POLYMERS USA LLC
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-05
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing fire circuit breakers use plastic materials that are difficult to maintain high structural integrity, good thermal insulation, and electrical insulation in explosive environments, and also suffer from increased weight.

Method used

A polymer composition (PC) comprising semi-crystalline polyphthalamide (PPA), glass fiber (GF), and non-halogenated flame retardant (FR) is blended to form a polymer composition, which is then used to prepare key components of pyrotechnic circuit breakers, enhancing their resistance and insulation in explosive environments.

Benefits of technology

It achieves high structural integrity, good thermal insulation and electrical insulation in explosive environments, while reducing weight increase, thus meeting the performance requirements of pyrotechnic circuit breakers.

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Abstract

本发明涉及一种用于断开电导体的烟火断路器，该烟火断路器包括：▪ 至少一个电导体；▪ 至少一个烟火爆破装药，该烟火爆破装药被设计成在被电脉冲和 / 或热脉冲触发时爆炸；其中该烟火断路器包括至少一个零件 (p)，该至少一个零件由聚合物组合物 (PC) 制成或包含聚合物组合物，该聚合物组合物本身包含：▪ 至少一种半结晶聚邻苯二甲酰胺（PPA）；▪ 至少15.0 wt%的玻璃纤维（GF）；▪ 至少5.0 wt%的至少一种非卤化阻燃剂（FR）；▪ 可选地至少一种尤其选自由以下组成的组塑料添加剂：抗冲击改性剂（IM）、增塑剂、着色剂、颜料、抗静电剂、染料、润滑剂、热稳定剂、光稳定剂、阻燃剂、成核剂、抗氧化剂、UV吸收剂、酸清除剂及其组合；▪ 将玻璃纤维（GF）、非卤化阻燃剂（FR）和可选的塑料添加剂与聚邻苯二甲酰胺（PPA）共混。
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Citation Information

Patent Citations

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