PAN基碳化纤维的电性能及应用  

Electrical property and application of PAN-based carbonaceous fibers

作　　者：马婕[1] 王成国[1] 于美杰[1] 王启芬[1] 张敏[1] 

机构地区：[1]山东大学材料科学与工程学院,碳纤维工程技术研究中心,材料液固结构演变与加工教育部重点实验室,山东济南250061

出　　处：《功能材料》2010年第3期549-551,554,共4页Journal of Functional Materials

基　　金：国家自然科学基金资助项目(50673052);国家重点基础研究发展计划(973计划)资助项目(2006CB605314);中国博士后科学基金资助项目(20080431207)

摘　　要：采用连续预氧化碳化法,在700～1300℃制备了聚丙烯腈(PAN)基碳化纤维。使用元素分析仪、X射线衍射仪和高精度电阻仪检测了碳化纤维的化学成分、物相结构和体电阻率;使用绝缘电阻仪测试了碳化纤维/树脂复合涂层的表面电阻率。研究结果表明,随着碳化温度的升高,纤维的碳元素含量增大,同时纤维中形成大量类石墨结构,增强了纤维的导电性,碳化纤维的电阻率由1.12Ω.cm急剧下降至1.95×10-3Ω.cm;在树脂中添加短切碳化纤维制备的防静电复合涂层的表面电阻率可在104～107Ω之间调整。Polyacrylonitrile（PAN）-based carbonaceous fibers for antistatic application were prepared at carbonization temperature from 700 to 1300℃.Chemical composition,microstructure and electrical resistivity of the carbonaceous fibers were characterized using elemental analyzer,X-ray diffractometer and high precision electrical resistance tester;surface electrical resistivity of carbonaceous fiber/resin composite coatings was measured using insulation tester.Results indicated that the electrical resistivity of carbonaceous fibers decreased drastically from 1.12 to 1.95×10-3Ω·cm due to the large amount of turbostratic graphite structures formed in carbonization process.Surface electrical resistivity of antistatic coatings prepared with carbonaceous fibers was adjustable in the range of 104 to 107Ω to satisfy specific applications.

关 键 词：碳化纤维 化学成分 表观结晶度 体电阻率 表面电阻率 

分 类 号：TQ342.74[化学工程—化纤工业]