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含氟半脂环透明聚酰亚胺薄膜的制备和性能

Keywords: 有机高分子材料,光通讯,聚酰亚胺,近红外,脂环二酐,含氟二胺

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Abstract:

?分别将脂环族二酐单体1,2,3,4--环丁烷四酸二酐(cbda,i)、1,2,4,5--环戊烷四酸二酐(cpda,ii)和1,2,4,5--环己烷四酸二酐(chda,iii)与芳香族含氟二胺1,4--双(4--胺基--2--三氟甲基苯氧基)苯(6fapb,a)和4,4′--双(4--胺基--2--三氟甲基苯氧基)联苯(6fbab,b)反应制备两个系列的含氟半脂环族聚酰亚胺(pi),研究了pi薄膜的热性能和光学性能.结果表明,制备出的pi薄膜具有良好的热稳定性,在氮气中起始热分解温度超过450℃、玻璃化转变温度超过250℃,在可见光范围内(400--700nm)具有优良的透明性,450nm处的透过率超过88%.两类pi薄膜在光通讯波段(1.30?μm与1.55?μm)均没有显著的吸收.

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