预氧丝皮芯结构对碳纤维性能的影响  

Effect of skin-core structure of PAN·OF on properties of carbon fibers

作　　者：肖建文[1] 徐樑华[2] 廉信淑[1] 孔令强[1] 刘长清[1] 于湧涛[1] 

机构地区：[1]中国石油吉林石化公司研究院国家碳纤维工程技术研究中心,吉林132021 [2]北京化工大学碳纤维及复合材料研究所国家碳纤维工程技术研究中心,北京100029

出　　处：《化工新型材料》2013年第8期117-119,147,共4页New Chemical Materials

摘　　要：在使用PAN.F(聚丙烯腈原丝)为前躯体制备PAN.CF(聚丙烯腈基碳纤维)的过程中,经过预氧化反应生成的PAN.OF(聚丙烯腈基氧化纤维,俗称预氧丝)是其非常重要的中间过程,PAN.OF的皮芯结构直接影响着PAN.CF的力学性能。借助超薄切片机、电子显微镜、扫描电镜和材料试验机等表征测试手段,系统研究了PAN.OF的皮芯结构对PAN.CF力学性能的影响。研究认为:通过原丝的细旦化和预氧化过程条件的优化可以有效控制或消除PAN.OF的皮芯结构,得到抗拉强度5600MPa以上,弹性模量290GPa以上的碳纤维。In the process of using PAN·F（polyacrylonitrile fiber）as precursor for preparing PAN·CF（polyacrylonitrile-based carbon fiber）,PAN·OF（Polyacrylonitrile-based preoxidized fiber,commonly known as preoxidized fiber）generated by preoxidation reactions was a very important intermediate process,and skin-core structure of PAN·OF directly affected the mechanical properties of PAN·CF.With the help of a microtome,electron microscope,scanning electron microscope,material testing machine etc.characterization means,the effects of skin-core structure of PAN·OF on mechanical properties of PAN·CF were studied systematically.Research suggested that skin-core structure of PAN·OF could be controled effectively or eliminated through by reducing the diameter of PAN·F and optimizing process conditions of preoxidation,thereby the carbon fiber which tensile strength attained above 5600 MPa and which elastic modulus attained above 290GPa could be getted.

关 键 词：聚丙烯腈原丝 氧化纤维(或预氧丝) 皮芯结构 碳纤维 力学性能 

分 类 号：TQ342.3[化学工程—化纤工业]