聚酰胺
热塑性塑料
热膨胀
材料科学
热稳定性
玻璃化转变
造型(装饰)
透射率
光学透明度
复合材料
高分子化学
聚合物
化学
有机化学
光电子学
作者
Lidong Cao,Yaqing Wen,Xingzhong Fang,Guofei Chen
出处
期刊:Polymer
[Elsevier]
日期:2023-08-01
卷期号:282: 126093-126093
标识
DOI:10.1016/j.polymer.2023.126093
摘要
With the applications of injection molding optical components, higher requirements are put forward for thermoplastic polyimides (TPIs) in terms of transparency and coefficient of thermal expansion (CTE). Two series of thermoplastic polyamide-imides (PAIs) derived from 2,2'-(2,2′-bis(trifluoromethyl)-[1,1′-biphenyl]-4,4′-diyl)bis(1,3-dioxoisoindoline-5-carbonyl chloride) (CT-TFDB) and rigid/flexible aromatic diamines with specific groups were prepared at room temperature, which both exhibited moderate glass transition temperatures (Tgs) in the range of 251–274 °C, excellent dimensional stability with CTE values of 17–34 ppm/K, high transmittance (T450nm ≥ 59%) and good thermoplasticity with -d logE'/dT values of 0.08–0.34. Among them, PAI-2a exhibited the best comprehensive performances, especially for the high thermoplasticity (-d logE'/dT = 0.34), low CTE (28 ppm/K), and high transmittance (T450nm = 84%), which provides a new strategy for the research on thermoplastic PAI materials in optical field.
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