聚丙烯腈分子链微观结构对聚丙烯腈基炭纤维性能的影响  

The Effect of Molecular Chain Microstructure of PAN on Properties of PAN-Carbon Fibers

作　　者：许志献[1,2] 孙国方[2] 张力[2] 金日光[2] 

机构地区：[1]安阳师范学院化学化工学院,河南安阳455000 [2]北京化工大学资源综合利用国家重点实验室高强高模碳纤维研究室,北京100029

出　　处：《高分子材料科学与工程》2011年第5期100-104,共5页Polymer Materials Science & Engineering

基　　金：国家自然科学重点基金资助(50333060)

摘　　要：聚丙烯腈是炭纤维的重要原材料。高质量的聚丙烯腈才有可能生产出高质量的原丝,而高质量的原丝是保证高质量炭纤维的必要条件。聚丙烯腈的分子量及其分布、等规度、共聚结构单元的比例及分布直接影响着聚丙烯腈的质量,进而影响原丝及其炭纤维的性能。从聚丙烯腈分子链的微观结构(分子量及其分布、等规度、共聚结构单元的比例及分布)阐述了对炭纤维力学性能影响的潜在缺陷及形成潜在缺陷的机理或途径。Polyacrylonitrile（PAN） is an important material for carbon fibers.High quality precursor may be produced using high quality PAN and is necessary condition for preparing carbon fibers.Precursor and it′s carbon fiber properties are influenced by PAN microstructure（such as molecular weight and distribution,tacticity,comonomer unit ratio and distribution along molecular chain） while PAN microstructure influenced the quality of PAN.The latent defect in molecular chain microstructure of PAN influences the preperies of PAN precursor and it′s carbon fiber.The effect of latent defect in molecular chain microstructure of PAN on properties of PAN-carbon fibers was expatiated in theories.Mechanism or path forming latent defect was stated.

关 键 词：聚丙烯腈 分子链微观结构 潜在缺陷 炭纤维 

分 类 号：TQ342.31[化学工程—化纤工业]