碳纤维表面Pyc/BN复合涂层的制备及抗氧化性能研究  

Preparation and oxidation resistance property of Pyc/BN composite coating on the CF surface

作　　者：赵鹏 任志刚 吕春祥[1,3] 吕晓轩[1,3] 杨禹[1,3] Zhao Peng;Ren Zhigang;Lv Chunxiang;Lv Xiaoxuan;Yang Yu(Key Laboratory of Carbon Materials,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049;National Engineering Laboratory for Carbon Fiber Technology,Institute of Coal Chemistry,Chinese Academy of Sciences,Taiyuan 030001)

机构地区：[1]中国科学院山西煤炭化学研究所中国科学院碳材料重点实验室,太原030001 [2]中国科学院大学材料与光电研究中心,北京100049 [3]中国科学院山西煤炭化学研究所碳纤维制备技术国家工程实验室,太原030001

出　　处：《化工新型材料》2022年第2期86-89,94,共5页New Chemical Materials

基　　金：山西煤基低碳联合基金培育项目(U1710122)。

摘　　要：为了提高碳纤维的抗氧化能力,采用浸渍-化学转化法在碳纤维表面制备热解碳/氮化硼(Pyc/BN)复合涂层。首先将脱胶、表面活化的碳纤维浸渍硼酸、尿素和酚醛树脂的混合溶液,然后在N;气氛中,不同温度(700、800、和900℃)下热处理2h。利用X射线衍射仪(XRD)、扫描电子显微镜(SEM)、傅里叶红外光谱仪(FT-IR)和X射线光电子能谱(XPS)对Pyc/BN复合涂层的物相、形貌和成分进行分析,研究不同处理温度对碳纤维的力学和热学性能的影响。结果表明,制备的Pyc/BN复合涂层均一性好,其中800℃是最合适的制备温度,使碳纤维的抗氧化温度提高了190℃。In order to improve the oxidation resistance of carbon fiber(CF),pyrolytic carbon/boron nitride(PyC/BN) composite coating was prepared on the CF surface by impregnation chemical conversion method.Firstly, the degummed and surface activated CF were impregnated with boric acid, urea and phenolic resin solutions, and then heat treated in N;atmosphere at different temperatures(700,800,and 900℃) for 2 h.The phase, morphology and composition of the coating were analyzed by X-ray diffraction(XRD),scanning electron microscopy(SEM),fourier transform infrared spectroscopy(FT-IR) and X-ray photoelectron spectroscopy(XPS).The results shown that the coating had good homogeneity, and 800℃ was the most suitable preparation temperature.The oxidation resistance temperature of CF was increased by 190℃.

关 键 词：碳纤维 热解碳 氮化硼 复合涂层 抗氧化 

分 类 号：TQ342.74[化学工程—化纤工业]