一种聚氨酯阻燃可膨胀石墨及其制备方法

By using specific formulations and processing techniques, polyurethane flame-retardant expandable graphite was prepared, solving the problems of low purity, poor compatibility, and easy oxidation of traditional expandable graphite. This resulted in high-efficiency flame-retardant performance and stability, making it suitable for applications in construction, transportation, and electronics.

CN122188234BActive Publication Date: 2026-07-17CHANGYI SENHUI NEW MATERIALS CO LTD

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHANGYI SENHUI NEW MATERIALS CO LTD
Filing Date
2026-04-27
Publication Date
2026-07-17
Patent Text Reader

Abstract

本发明涉及一种聚氨酯阻燃可膨胀石墨及其制备方法,属于可膨胀石墨技术领域,包括以下按重量份计的原料:100‑120份石墨、30‑50份95‑98wt%硫酸溶液、8‑12份15‑25wt%氢氟酸溶液、5‑8份49‑52wt%过氧化氢溶液和0.8‑1.2份抗氧化剂。提高膨胀倍数且降低起始膨胀温度,增强其在聚氨酯中的阻燃性能与应用适配性,又借助抗氧化剂的协同作用,抑制可膨胀石墨在制备及储存过程中的氧化变质,延长其保质期;氧化插层反应的夹套冷却控温、两次烘干与pH调节,确保了产品性能的稳定性与均一性,还能有效去除石墨表面杂质,减少无效成分,提升有效石墨利用率。
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