Organic–inorganic polyimide nanocomposites containing a tetrafunctional polyhedral oligomeric silsesquioxane amine: synthesis, morphology and thermomechanical properties

Organic–inorganic polyimide nanocomposites containing a tetrafunctional polyhedral oligomeric silsesquioxane amine: synthesis, morphology and thermomechanical properties
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含有四官能多面体低聚倍半硅氧烷胺的有机-无机聚酰亚胺纳米复合材料:合成、形态和热机械性能

DOI:
10.1002/pi.5510
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发表时间:
2018-03
影响因子:
3.2
通讯作者:
Zheng S.
Zheng S.
中科院分区:
化学3区
文献类型:
--
作者:
Qiu J.;Xu S.;Liu N.;Wei K.;Li L.;Zheng S.

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合成了一种结构明确的四氨基多面体低聚倍半硅氧烷(POSS)--5,11,14,17-四苯基八苯基倍半硅氧烷。将这种新型的四官能团POSS胺用于制备聚酰亚胺纳米复合材料。结果表明,杂化聚酰亚胺纳米复合材料呈纳米结构,POSS组分聚集成直径为40 − 80 nm的球形微区。与未改性聚酰亚胺相比,含POSS的聚酰亚胺纳米复合材料表现出更好的热稳定性和表面疏水性。由于POSS微区的引入,聚酰亚胺纳米复合材料的介电常数与普通聚酰亚胺相比显著降低。©2017中国化学工业学会
5,11,14,17‐Tetraanilinooctaphenyl double decker silsesquioxane, a well‐defined tetraamino polyhedral oligomeric silsesquioxane (POSS), was synthesized in this work. This novel tetrafunctional POSS amine was employed to prepare polyimide nanocomposites. It was found that the hybrid polyimide nanocomposites displayed nanostructures in which the POSS component was aggregated into spherical microdomains with a diameter of 40 − 80 nm. Compared to unmodified polyimide, the POSS‐containing polyimide nanocomposites displayed improved thermal stability and surface hydrophobicity. Owing to the introduction of the POSS microdomains, the dielectric constants of the polyimide nanocomposites were significantly decreased in comparison with plain polyimide. © 2017 Society of Chemical Industry
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