关于EPDM增强聚酸的阻燃性研究
Yifei Chen1, Shengping Yi1, Xilong Zhang2
1College of Chemistry and Molecular Sciences, Wuhan University Wuhan 430072 China chihuang@whu.edu.cn.
RSC advances
|March 18, 2024
概括
聚酸盐 (APP) 增强了固体火箭发动机的乙烯二烯单体 (EPDM) 绝缘. 在氧气贫乏的条件下,APP提高了阻燃性和消耗性能,对机械性能的影响最小.
科学领域:
- 材料科学 材料科学 材料科学
- 航空航天工程 航空航天工程
- 聚合物化学 聚合物化学
背景情况:
- 乙烯二烯单体 (EPDM) 是固体火箭发动机 (SRM) 绝缘的标准.
- 目前的EPDM配方需要阻燃填充剂,以平衡机械强度,密度,阻燃性和消耗性能.
- 在缺乏氧气的环境中,阻燃剂的有效性对于SRM应用至关重要.
研究的目的:
- 研究聚酸盐 (APP) 作为EPDM复合材料的阻燃填充剂.
- 在无氧条件下评估APP在EPDM中的阻燃性能.
- 评估APP对复合材料绝缘材料的机械性能和密度的影响.
主要方法:
- 复合材料使用EPDM预混合物 (p-EPDM) 与烟,氧化物和APP.准备.
- 使用限制氧指数和UL-94方法在无毒环境中测试阻燃性能.
- 用拉曼光谱,SEM和EDS分析了燃烧残留物的表面形态和元素组成.
主要成果:
- 用APP填充的复合材料在限制氧指数和UL-94测试中显示出更好的阻燃性能.
- 添加APP对EPDM复合材料的机械强度和密度产生了最小的负面影响.
- APP分解成稀释易燃产品的气体,并促进了炭层的形成.
结论:
- 聚酸盐 (APP) 是一种有效的阻燃填充剂,用于氧气贫乏环境中的EPDM绝缘.
- 在不显著地损害机械完整性的情况下,APP提高了阻燃性和消灭性性能.
- 这些发现为设计固体火箭发动机的先进绝缘材料提供了指导.
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