具有低线性热膨胀系数和低吸水率的聚胺 (VIII):结构-阻燃性关系
Masatoshi Hasegawa1, Yuta Takeuchi1, Takayuki Saito1
1Department of Chemistry, Faculty of Science, Toho University, 2-2-1 Miyama, Funabashi, Chiba 274-8510, Japan.
Polymers
|July 27, 2024
概括
合成了新型聚胺基 (PEsI),其中一种配方实现了V-0阻燃性和卓越的热力和机械性能. 这一突破为灵活的电子产品中先进的介电基材提供了潜力.
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
- 有机合成 有机合成
背景情况:
- 改性聚化物,特别是聚化化物 (PEsI),是使用与联的四碳基二化物与帕拉烯单元 (TA-pPhs) 合成的.
- 最初的发现表明,PEI中的阻燃性和薄膜性可能会随着由基连接的扩展单体结构而降低.
研究的目的:
- 系统地研究基于TA-pPh的PEIs的结构-属性关系.
- 确定实现最高阻燃等级 (UL-94,V-0) 的关键结构因素.
- 探索这些PEI作为灵活印刷电路的高温介电基材的潜力.
主要方法:
- 合成了一系列含有多个类烯基单元 (TA-pPhs) 的与结的四碳基二化物.
- 从这些二化物中提取的新型聚胺 (PEsI) 的制造和表征.
- 系统地研究结构与性能关系,包括阻燃性,热稳定性,机械性能和吸收湿度.
主要成果:
- 由含有甲四烯的TA-pPh (TA-DPQP) 和p-phenylenediamine (p-PDA) 衍生出的PEsI显示出优越的特性,包括V-0阻燃性.
- 这种最佳的PEsI表现出极高的玻璃过渡温度 (Tg),非常低的热膨胀系数 (CTE),低的吸水量 (WA) 和超低的湿度膨胀系数 (CHE).
- 该研究还检查了TA-pPh替代物的效应,并研究了含纳素的类似物的结构性质关系.
结论:
- TA-DPQP/p-PDA PEsI系统提供了热稳定性,机械性,低湿度敏感性和高阻燃性等优秀组合.
- 这些发现为设计高性能聚胺用于苛刻的应用提供了关键的见解.
- 合成的PEIs显示出作为灵活印刷电路的新型高温介电基材的显著前景.
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