在低温可化聚胺中探索因因衍生物的混合和移植的影响
Shan Huang1,2, Xialei Lv1, Yao Zhang1
1Shenzhen International Innovation Institutes of Advanced Electronic Materials, Shenzhen Institutes of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055, China.
Macromolecular rapid communications
|August 24, 2023
概括
一种新的接种策略引入了低温可固化聚胺 (PI) 的加速器. 这种方法使用一种新的oline衍生物 (NQL) 的超低剂量,增强PI特性,用于高级包装应用.
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
背景情况:
- 加速器通常用于制备低温可固化聚胺 (PI).
- 传统的加速器通常需要高剂量,并对PI特性产生负面影响.
- 需要一种新的方法来有效地结合加速器,而不会影响材料性能.
研究的目的:
- 开发一种新的策略,用于制备具有增强性能的低温可固化聚胺 (PI).
- 通过接种将加速器引入PI,克服传统混合方法的局限性.
- 为了研究新设计的素衍生物 (NQL) 作为加速器的有效性.
主要方法:
- 设计和合成一种新型氨酸衍生物,即6-[1,1'-双]-4-yl) -4-chloroquinoline (NQL).
- 通过超低剂量 (2.5 mol%) 的移植策略将NQL纳入聚胺中.
- 由此产生的聚胺的热固化行为和材料性能的描述.
主要成果:
- 这种新型的NQL加速器使得低温可固化聚胺 (PI) 能够在2.5mol%的超低剂量下实现.
- NQL表现出强性 (pKa = 18.47) 和电子捐赠能力,促进了低温固化.
- 聚胺含有2.5mol%的NQL在200°C时表现出极好的性能 (Young的模量:5.73 GPa,延长:37.3%,拉伸强度:237 MPa,CTE:16 ppm K-1).
- NQL成功地将固化温度降至180°C,得到的PI薄膜保持了优良的性能.
结论:
- 移植加速器,特别是新型NQL,是开发低温可固化聚胺 (PI) 的有希望的战略.
- 这种方法有效地克服了传统加速器混合的缺点,例如高剂量要求和性能降解.
- 开发的低温可固化的PI显示了高性能,为先进的包装应用提供了潜力.
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