新型炭材料2023，Vol.38Issue(3)：566-575,10.DOI:10.1016/S1872-5805(23)60738-3
碳纳米管/共聚酰亚胺复合膜增强炭纤维/环氧树脂复合材料的层间断裂韧性和导热性
Increasing the interlaminar fracture toughness and thermal conduc-tivity of carbon fiber/epoxy composites interleaved with carbon nanotube/polyimide composite films
摘要
Abstract
Carbon fiber/epoxy(CF/EP)composites are widely used in the aerospace industry,but their interlaminar properties and out-of-plane thermal conductivity are poor because of the lack of CF reinforcement in the interlaminar area.We prepared carbon nan-otube/polyimide(CNT/PI)composite films and used them to improve the interlaminar fracture toughness(ILFT)and thermal con-ductivity of laminates of CF/EP and CNT/PI.Interleaving CNT/PI films with unidirectional CF/EP prepregs increased the mode Ⅰ(the pre-cracked laminate failure is governed by peel forces)and mode Ⅱ(the crack is propagated by shear stresses)ILFT of CF/EP laminates by 260％ and 220％,respectively,which is attributed to the reinforcement effect of the CNTs and the plastic deformation of PI film.In addition,the out-of-plane thermal conductivity of the laminates is improved by introducing CNT/PI films because of their intrinsic high thermal conductivity and the continuous conductive network of CNTs.This toughening method provides an effective strategy for improving the thermal conductivity and mechanical properties of CF/EP laminates simultaneously.关键词
CNT/BOH薄膜/层间断裂韧性/导热系数/炭纤维/环氧树脂复合材料/导热网络结构Key words
CNT/BOH film/ILFT/Thermal conductivity/CF/EP laminates/Thermal conductive network分类
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张丽丽,李新莲,王鹏,魏兴海,经德齐,张兴华,张寿春..碳纳米管/共聚酰亚胺复合膜增强炭纤维/环氧树脂复合材料的层间断裂韧性和导热性[J].新型炭材料,2023,38(3):566-575,10.基金项目
This work was supported by the Key Research and Development Program of Shanxi Province(202003D111002),Major Science and Technology Project in Shanxi Province(202101040201003),and the Innovation Fund Project of Shanxi Institute of Coal Chemistry,Chinese Academy of Sciences(SCJC-XCL-2022-12).山西省重点研发计划资助项目(202003D111002) （202003D111002）
山西省重大科技项目计划揭榜挂帅项目(202101040201003) （202101040201003）
中国科学院山西煤炭化学研究所创新基金项目(SCJC-XCL-2022-12). （SCJC-XCL-2022-12）
