2.5D角联锁机织复合材料热传导性能研究  

Study on thermal conductivity of 2.5D angle-interlock woven composites

作　　者：高畅畅 陈芷彤 沈天乐 王萍[1] 张岩 Gao Changchang;Chen Zhitong;Shen Tianle;Wang Ping;Zhang Yan(College of Textile and Clothing Engineering,Soochow University,Suzhou 215021,Jiangsu,China)

机构地区：[1]苏州大学纺织与服装工程学院,江苏苏州215021

出　　处：《产业用纺织品》2023年第3期21-27,共7页Technical Textiles

基　　金：国家级大学生创新创业训练计划项目(202110285037);江苏省高等学校自然科学研究重大项目(22KJA540002);江苏省先进纺织工程技术中心开放课题基金科研项目(XJFZ/2021/3);中国纺织工业联合会科技指导性项目(2020064)。

摘　　要：首先采用碳纤维分别制备了不同经纱层数、经纱倾斜角度和经纱密度的2.5D层间正交角联锁机织物和2.5D层间斜交角联锁机织物;然后,以机织物为增强体、以环氧树脂为基体,采用真空辅助树脂传递模压成型技术制备了2.5D角联锁机织复合材料;最后,采用自制的平面稳态热源装置和激光导热仪测试复合材料在厚度方向上的热传导性能。结果表明:经纱层数较小、经纱倾斜角度及经纱密度较大时,复合材料表层升温速率较快,且平衡状态时表层温度较高;同种结构的2.5D角联锁机织复合材料,经纱层数多、经纱倾斜角度及经纱密度大,热导率大。研究结果为高强、高导热复合材料的优化设计提供了试验基础。Firstly,2.5D interlaminar orthogonal angle-interlock woven fabrics and 2.5D interlaminar skew angle-interlock woven fabrics with different number of warp layers,warp inclination tilt angles and warp densities were prepared using carbon fibers.Then,2.5D angle-interlock woven composites were prepared by vacuum assistant resin transfer molding method with woven fabrics as reinforcement and epoxy resin as matrix.Finally,the thermal conductivity of the composites along the thickness direction was measured by self-made planar steady-state heat source device and laser flash method conductometer.The results showed that the temperature of surface layer of the composites rose rapidly faster with the lower the number of warp layer,the higher the warp inclination tilt angle and the warp density,and the higher the temperature at the equilibrium state.The thermal conductivity of 2.5D angle-interlock woven composites with the same structure increased with the increase of the number of warp layer,the warp inclination tilt angle and the warp density.The results provide theoretical basis for the optimal design of high strength and high thermal conductivity composite materials.

关 键 词：热传导性能 2.5D角联锁机织复合材料 正交 斜交 经纱层数 经纱倾斜角度 经纱密度 经纱体积分数 

分 类 号：TB332[一般工业技术—材料科学与工程]