国产高导热中间相沥青基碳纤维复合材料性能研究  

Study on properties of domestic high thermal conductivity mesophase asphalt-based carbon fiber composites

作　　者：徐小魁 潘江 郝尚 张娟娟 吴春燕 刘千立 XU Xiaokui;PAN Jiang;HAO Shang;ZHANG Juanjuan;WU Chunyan;LIU Qianli(Shanghai Composites Science and Technology Co.,Ltd.,Shanghai 201112,China;Shanghai Engineering Research Center of Aerospace Resin Based Composite,Shanghai 201112,China)

机构地区：[1]上海复合材料科技有限公司,上海201112 [2]上海航天树脂基复合材料工程技术研究中心,上海201112

出　　处：《复合材料科学与工程》2025年第2期40-45,共6页Composites Science and Engineering

摘　　要：为夯实国产高导热中间相沥青基碳纤维(MPCF)在航天领域中的工程应用基础,重点研究了国产MPCF及其复合材料性能。通过扫描电子显微镜(SEM)和原子力显微镜(AFM)表征了国产MPCF的微观形貌,利用X射线光电子能谱分析(XPS)、光学显微镜和表界面测试仪测定了国产MPCF的表面化学元素、浸润性和表面能,考察了国产MPCF预浸料制备工艺性,评价了国产MPCF复合材料的常温力学性能、理化性能和热真空放气性能。结果显示:与进口MPCF相比,国产MPCF粗糙度更高,表面化学活性、浸润性和表面能更优;国产MPCF预浸料成型工艺性差,制得的国产MPCF复合材料层间剪切强度(46.69 MPa)与进口MPCF复合材料层间剪切强度相当,其他如拉伸、压缩和弯曲等性能略低;国产MPCF复合材料热真空放气性能满足空间环境要求;国产MPCF各向同性复合材料平均面内热导率为152.1 W·m^(-1)·K^(-1),与进口材料相比,导热性能略低,但与传统6063铝合金扩热结构相比,更具轻量化和结构功能一体化优势。In order to consolidate the engineering application foundation of domestic high thermal conductivity mesophase asphalt-based carbon fiber(MPCF)in aerospace field,the properties of domestic MPCF and its composites were studied.The micro-morphology of domestic MPCF was characterized by scanning electron microscopy(SEM)and atomic force microscopy(AFM).The surface chemical elements,wettability and surface energy of domestic MPCF were measured by X-ray photoelectron spectroscopy(XPS),optical microscopy and surface interface testing instrument.The preparation process of domestic MPCF prepreg was investigated.The mechanical properties,physical and chemical properties and thermal vacuum degassing properties of domestic MPCF composites were evaluated.The results show that the roughness of domestic MPCF is higher than that of imported MPCF.The surface chemical activity,wettability and surface energy of domestic MPCF are better than those of imported MPCF.The forming process of domestic MPCF prepreg is subpar,and the interlayer shear strength of domestic MPCF composite(46.69 MPa)is comparable to that of imported MPCF composite,but other properties such as tensile,compression and bending properties are slightly lower than those of imported composite.The thermal vacuum degassing performance of domestic MPCF composite meets the requirements of space environment.The average in-plane thermal conductivity of domestic MPCF isotropic composite material is 152.1 W·m^(-1)·K^(-1),and the thermal conductivity is slightly lower than that of imported materials,but it has more advantages of lightweight and structural-functional integration than the traditional 6063 aluminum alloy heat-expanding structure.

关 键 词：国产 高导热中间相沥青基碳纤维 复合材料 性能 

分 类 号：TB332[一般工业技术—材料科学与工程]