A fire-resistant and flame-retardant cable sheath material and its preparation method

By combining modified EVA, modified boron nitride, and bio-based composite flame retardants, fire-resistant and flame-retardant cable sheath materials were prepared, solving the flammability problem of EVA-type materials and achieving improved high-efficiency flame retardancy and anti-aging performance.

CN121652530BActive Publication Date: 2026-05-05NANTONG HUIFENGCHUANG INTELLIGENT SOURCE TECHNOLOGY CO LTD
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Patent Information

Application Number
CN202610170367.0
Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Filing Date
2026-02-06
Publication Date
2026-05-05
Estimated Expiration
2046-02-06

AI Technical Summary

Technical Problem

Existing EVA cable sheath materials are flammable at high temperatures, posing a fire risk, and lack effective flame-retardant properties.

Method used

A fire-retardant cable sheath material was prepared by combining modified EVA, modified boron nitride, bio-based composite flame retardant and chloroplatinic acid through reaction and melt blending technology. The flame retardant effect was achieved by synergistic flame retardancy of naringenin and phosphorus, modified boron nitride to enhance ultraviolet absorption capacity, and pre-modified EVA to enhance anti-aging properties, forming a cross-linked network structure.

Benefits of technology

It significantly improves the flame retardant and anti-aging properties of cable sheath materials, while also enhancing mechanical properties and reducing fire risk.

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Abstract

This invention discloses a fire-retardant cable sheath material and its preparation method, relating to the technical field of sheath materials. In preparing the fire-retardant cable sheath material, the present invention involves reacting boron nitride sequentially with sodium hydroxide, 1-amino-4-[2-(triethoxysilyl)ethyl]benzene, and salicylaldehyde to obtain modified boron nitride; reacting ethylene-vinyl acetate copolymer with maleic anhydride and 1-allyl-1,1,3,3-tetramethyldisiloxane to obtain pre-modified EVA; reacting the pre-modified EVA with 4-(3-aminopropyl)-2,6-di-tert-butylphenol to obtain modified EVA; and melting and mixing the modified EVA, modified boron nitride, bio-based composite flame retardant, and chloroplatinic acid, followed by pressing to obtain the fire-retardant cable sheath material. The resin-based fire-retardant cable sheath material prepared by this invention exhibits excellent flame retardancy, anti-aging properties, and mechanical properties.
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