Environment-friendly water-resistant flame retardant and preparation method thereof

Through the synergistic effect of modified chitosan, carbazole piperazine, and thiophene piperazine, a dense hydrophobic flame retardant layer and an expanded char layer are formed, which solves the problems of low flame retardant efficiency, poor water resistance, and insufficient environmental protection of existing flame retardants in electronic components. It achieves high-efficiency and environmentally friendly flame retardant and water resistance properties, and is suitable for long-term protection of electronic components.

CN122404593APending Publication Date: 2026-07-17
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Filing Date
2026-05-26
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Existing flame retardants used in electronic components suffer from low flame retardant efficiency, poor water resistance, insufficient insulation performance, and insufficient environmental friendliness, failing to meet the long-term protection requirements under high temperature and high humidity environments.

Method used

By employing a synergistic approach combining bio-based water-resistant components and dual flame-retardant components, a dense hydrophobic flame-retardant layer and an expanded char layer are formed through the combination of modified chitosan, carbazole piperazine monomer, and thiophene piperazine monomer. The synergistic effect of carbazole piperazine and thiophene piperazine improves flame-retardant efficiency and provides insulation properties, while preventing the release of toxic gases.

Benefits of technology

It achieves high flame retardancy, excellent water and moisture resistance, and environmentally friendly and biodegradable flame retardant, enabling long-term stable use in high temperature and high humidity environments, meeting UL-94 V-0 flame retardant requirements, and protecting electronic components from damage.

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Abstract

本发明提供了一种环保型耐水阻燃剂及其制备方法，通过对天然壳聚糖改性得到生物基耐水成分，以改性壳聚糖、咔唑哌嗪单体和噻吩哌嗪单体双阻燃组分制得中间体，再加入苯膦酰二氯、甲醇水溶液，经洗涤、真空干燥、过筛等步骤，最终得到具备高阻燃性能、优异的耐水防潮性能、且环保的阻燃剂；将该阻燃剂应用于电子元器件聚丙烯材料中，其疏水接触角138‑146°，24h吸水率≤0.26%，极限氧指数（LOI）≥37%，垂直燃烧等级达到UL‑94 V‑0级，能够满足电子元器件用塑料膜材料使用要求。
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Citation Information

Patent Citations

  • Conjugated polymer containing thieno[3,4-b] pyrazine as well as preparation method and application of conjugated polymer

    CN112321806A

  • Halogen-free flame-retardant bonding particles and flame-retardant polyolefin material thereof

    CN118005997A