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首页> 外文期刊>Journal of Applied Polymer Science >Multilayer polyimide nanocomposite films synthesis process optimization impact on nanoparticles dispersion and their dielectric performance
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Multilayer polyimide nanocomposite films synthesis process optimization impact on nanoparticles dispersion and their dielectric performance

机译：多层聚酰亚胺纳米复合膜合成工艺优化对纳米粒子分散的影响及其介电性能

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摘要

The preparation of polyimide (PI)/nanocomposite films and their thickness are a complex process with some ambiguous variables that are involved in the synthesis process. Therefore, it is crucial to understand those variables and reveal the chemistry behind them. Several methods have been probed until an optimal synthesis process was found. A detailed synthesis process optimization is described in this article to understand all variables, which can influence the molecular weight of polyamic acide (PAA) solution, the thickness of films, and nanoparticles dispersion. The spin coating technique was used to control the thickness of single and multilayer PI/nanocomposite films, which reveals that the thickness of the casted PI film depends on several factors, such as the viscosity, molecular weight of the PAA solution, and the spin speed of spin coater. Factors, which can influence the molecular weight of PAA solution, are discussed in detail. After completing the synthesis process, the single and multilayer PI nanocomposite films are characterized experimentally. The results reveal that using a thin layer of nanocomposite on PI film in the form of a multilayer structure improves the nanoparticles dispersion and thereafter its dielectric properties.
机译：聚酰亚胺（PI）/纳米复合薄膜的制备及其厚度是一个复杂的过程，合成过程中涉及到一些模糊的变量。因此，了解这些变量并揭示其背后的化学成分至关重要。人们探索了几种方法，直到找到了最佳的合成工艺。本文描述了详细的合成工艺优化，以了解所有变量，这些变量会影响聚酰胺酸（PAA）溶液的分子量、薄膜厚度和纳米颗粒分散。采用旋涂技术控制了单层和多层PI/纳米复合膜的厚度，结果表明，浇铸PI膜的厚度取决于几个因素，如PAA溶液的粘度、分子量和旋涂机的旋转速度。详细讨论了影响PAA溶液分子量的因素。在完成合成过程后，对单层和多层PI纳米复合薄膜进行了实验表征。结果表明，在PI膜上以多层结构的形式使用一薄层纳米复合材料可以改善纳米粒子的分散性，进而改善其介电性能。

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