基于五乙和甘乙的五乙和甘乙基的粉修饰的基终结聚乙烯 (HTPB)
Frank Lee1, Aran Guner1, Ken Lewtas1,2
1International Institute for Nanocomposites Manufacturing (IINM), WMG, University of Warwick, WarwickCV4 7AL, U.K.
ACS polymers Au
|April 14, 2025
概括
可持续的 Ester,的pentaerythritol ester (PER) 和的glycerol ester (GER),增强了基终结聚乙烯 (HTPB) 的性能. 这些添加剂改变了质,提高了HTPB材料的灵活性和性.
科学领域:
- 聚合物化学 聚合物化学
- 材料科学 材料科学 材料科学
- 可持续化学 可持续化学
背景情况:
- 基终结聚乙烯 (HTPB) 是一种多用途的聚合物,用于粘合剂,涂料和固体推进剂.
- 目前的HTPB添加剂往往缺乏可持续的采购和定制的功能.
- 需要环保修饰剂来增强HTPB的性能特征.
研究的目的:
- 为了研究可持续的乙烯 Ester,乙烯的五甲基醇 (PER) 和乙烯的糖醇 (GER) 的使用,作为HTPB的修饰剂.
- 为了评估这些烯酸乙对非交叉链和交叉链HTPB的风学和机械性能的影响.
- 为了理解由烯酸乙烯合并影响的结构-性质关系.
主要方法:
- 用不同度的PER和GER.HTPB的配方.
- 风湿学测量以确定未交叉连接的HTPB的粘度变化.
- 改性HTPB与多二酸 (HTPB-PU) 的交叉链接,然后进行机械测试 (斯模量,拉力强度,破裂时延长,拉力性) 和玻璃过渡温度 (Tg) 分析.
主要成果:
- PER和GER都与HTPB兼容,以度依赖的方式影响其玻璃过渡温度.
- 与GER相比,PER的结合导致了与GER相比,没有交叉连接的HTPB的粘度增加.
- 在交叉链接过程中,烯酸乙烯 Ester 与 HTPB 的基相竞争,减少交叉链接密度,增加交叉链接之间的分子质量.
- 这导致模量和拉伸强度降低,但在断裂时延伸显著增加 (+153%) 和拉伸性 (+76%).
结论:
- 可持续的 Ester (PER 和 GER) 有效地改变了 HTPB 的特性.
- 这些生物基添加剂为定制HTPB机械性能提供了一条途径,特别是提高灵活性和性.
- 这些发现支持开发更可持续,高性能的基于HTPB的材料.
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