碳纤维基复合材料热敏开关光热转换及焦耳热特性研究  

Photo-thermal conversion and Joule heat characteristics of thermal switch via carbon fiber-based composite

作　　者：文爽 刘思晨 石雷 黄存文 陶文亮 郑年本 周天 孙志强 WEN Shuang;LIU Si-chen;SHI Lei;HUANG Cun-wen;TAO Wen-liang;ZHENG Nian-ben;ZHOU Tian;SUN Zhi-qiang(School of Energy Science and Engineering,Central South University,Changsha 410083,China)

机构地区：[1]School of Energy Science and Engineering,Central South University,Changsha 410083,China

出　　处：《Journal of Central South University》2023年第7期2081-2093,共13页中南大学学报（英文版）

基　　金：Projects(52106125,52206216,52076217)supported by the National Natural Science Foundation of China;Project(2023JJ40744)supported by the Natural Science Foundation of Hunan Province,China;Project(2021RC4006)supported by the Science and Technology Innovation Program of Hunan Province,China;Project supported by the High Performance Computing Center of Central South University,China。

摘　　要：碳纤维基复合材料(CFC)因其优异的力学性能而受到广泛关注,广泛应用于航空航天、交通运输、军工等各个领域。然而,对碳纤维基复合材料光电转换的潜在机制和影响因素的研究却很少。本研究采用选择性激光烧结法制备了碳纤维增强聚酰胺12(CF/PA12)复合材料。结果表明,当碳纤维质量分数为15%时,CF/PA12复合材料具有良好的光热转换和焦耳加热特性。随着太阳强度的增加,CF/PA12复合材料的温度逐渐升高,当CF/PA12平行于光向取向时温度达到最高。本研究还证明了CF/PA12纤维取向对材料电阻和热阻的选择性调节。设计了一种集成光热转换的电压连续可调模式,并通过可循环试验进行了验证。本研究结果拓展了碳纤维增强聚合物复合材料在温度调节和操作控制方面的应用。Carbon fiber-based composites(CFCs)have garnered widespread attention due to their exceptional mechanical properties and have been widely used in various fields such as aerospace,transportation,and military industries.However,little research has been conducted on the underlying mechanisms and factors affecting the photo/electrical conversion of CFCs.In this study,a carbon fiber reinforced polyamide 12(CF/PA12)composite was fabricated via selective laser sintering.The results showed that the CF/PA12 composite exhibited excellent photo-thermal conversion and Joule heating characteristics with the optimal mass fraction(15 wt%)of carbon fiber.The temperature of the CF/PA12 composite increased gradually with increasing solar intensity and reached its highest value when the CF/PA12 was oriented parallel to the light direction.This study also demonstrated the selective regulation of CF/PA12 fiber orientation on material resistance and thermal resistance.A voltage continuously adjustable mode that integrates photothermal conversion was designed and verified through recyclable tests.The findings of this study expand the applications of carbon fiber reinforced polymer composites in temperature regulation and operation control.

关 键 词：光热转换 热导率 碳纤维基复合材料 热传导 

分 类 号：TB332[一般工业技术—材料科学与工程]