Flame-retardant polyethylene nonwoven sheet and method of making and use thereof

By introducing polyetherimide, sulfonate flame retardants and fumed silica into nonwoven materials, polyethylene nonwoven sheets with excellent flame retardant properties are prepared, solving the problem of insufficient flame retardant properties of existing materials and making them suitable for a variety of fire protection applications.

CN119956562BActive Publication Date: 2026-06-09XIAMEN DANGSHENG NEW MATERIAL CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XIAMEN DANGSHENG NEW MATERIAL CO LTD
Filing Date
2025-01-22
Publication Date
2026-06-09

AI Technical Summary

Technical Problem

Existing nonwoven materials have insufficient flame retardant properties, making it difficult to meet fire protection requirements in different application scenarios.

Method used

Flame-retardant polyethylene nonwoven sheets are prepared by flash spinning using high-density polyethylene resin as the matrix and combined with components such as polyetherimide, sulfonate flame retardants and fumed silica. The flame-retardant properties of the material are improved by utilizing the synergistic effect of polyetherimide forming a char layer, sulfonate flame retardants releasing flame-retardant substances, and fumed silica capturing free radicals.

Benefits of technology

It significantly improves the flame retardant properties of nonwoven materials, enhances thermal stability and combustion inhibition effects, reduces the combustion rate, and is suitable for a variety of application scenarios.

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Abstract

This invention discloses a flame-retardant polyethylene nonwoven sheet, its preparation method, and its applications, belonging to the field of polymer materials technology. The flame-retardant polyethylene nonwoven sheet comprises the following components by weight: 60-80 parts of high-density polyethylene resin, 5-12 parts of polyetherimide, 2-8 parts of sulfonate flame retardant, 2-7 parts of fumed silica, 2-6 parts of composite compatibilizer, 1-4 parts of polyethylene glycol, and 0.1-1 parts of additives. Using high-density polyethylene resin as the matrix, this invention significantly improves the flame-retardant properties of the flame-retardant polyethylene nonwoven sheet through the combined action of polyetherimide, sulfonate flame retardant, fumed silica, composite compatibilizer, polyethylene glycol, and additives, and has broad application prospects.
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