High relative leakage index, high glowing wire composite flame-retardant material and preparation method and application thereof

By using alkyl aluminum hypophosphite, polyaluminum polyphosphite, and metal hydroxide flame retardants with specific particle size distributions in PA66 materials, combined with polysiloxane, the glow wire performance and relative leakage index of the flame retardant material are improved. This solves the problem of insufficient safety of existing flame retardant PA66 materials under high temperature and high voltage, achieving higher safety and environmental protection.

CN119899526BActive Publication Date: 2025-11-25GUANGZHOU HUAXINKE ENTERPRISE
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Patent Information

Application Number
CN202510094821.4
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2025-01-21
Publication Date
2025-11-25
Estimated Expiration
2045-01-21

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Abstract

The application provides a high relative arc resistance index and high glow wire flame retardant composite material, and a preparation method and application thereof. The polyamide matrix is added with a composite flame retardant and polysiloxane, wherein the composite flame retardant comprises aluminum alkyl hypophosphite, polyaluminum phosphate and metal hydroxide, and the definition particle size parameter K=D V10 +3D V50 +D V90 , and meets: K A >K B >K C ; K A , K B , K C respectively correspond to the particle size parameter K of the aluminum alkyl hypophosphite, the polyaluminum phosphate and the metal hydroxide. Through further design and collocation of the types and particle size parameters of the flame retardant, the glow wire performance and the relative arc resistance index of the material are significantly improved.
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