Preparation and performance research of anisotropic fluorinated polyimide/carbon nanotubes composite films

doi:10.19936/j.cnki.2096-8000.20230828.008

Abstract

Abstract: In the future, lightweight, flexible and directionally conductive composites will have very important research and application value in the fields of microelectronic devices, aerospace and so on. Composites with highly anisotropic properties can be prepared by microstructural design and interface compatibility control. The fluorinated polyimide (f-PI)/carbon nanotubes (CNTs) was prepared by compounding the surface modified aligned CNTs with f-PI. Due to the improved interfacial compatibility between surface modified CNTs and polymer matrix, f-PI/CNTs composite films exhibit excellent thermal stability, mechanical properties and high light transmission. In spite of the extremely small amounts of the CNTs in a polymer matrix, the obtained uniform f-PI/CNTs composite films are characterized by a variety of excellent anisotropic properties. As a result, the tensile strength along the longitudinal direction of the highly aligned CNTs is 33.1% higher than that in perpendicular direction.

Key words: aligned CNTs, fluorinated polyimide, anisotropy, thermostability, composites

CLC Number:

TB332

LI Chunman, LI Shuangwen. Preparation and performance research of anisotropic fluorinated polyimide/carbon nanotubes composite films[J]. COMPOSITES SCIENCE AND ENGINEERING, 2023, 0(8): 51-56.

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