热致性液晶聚芳酯纤维的制备与热处理  

The Preparation and Heat-Treatment of Thermotropic Liquid-Crystalline Polyarylate Fiber

作　　者：甘海啸[1] 朱卫彪[1] 王燕萍[1] 王依民[1,2] 

机构地区：[1]东华大学材料科学与工程学院,上海201620 [2]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《合成纤维》2011年第5期1-4,共4页Synthetic Fiber in China

基　　金：上海市重点学科建设资助项目(B603)

摘　　要：热致性液晶聚芳酯(TLCP)纤维是一类具有较高强度与模量的高性能纤维。将由4,4'-二苯醚二甲酸、4-乙酰氧基苯甲酸、1,4-二乙酰氧基苯撑、2,6-萘二甲酸和对苯二甲酸熔融缩聚制得的新型液晶聚芳酯,通过熔融纺丝制得初生纤维,然后经热处理,制备高强、高模TLCP纤维。通过金相显微镜、差示扫描量热仪、热失重仪、纤维强力仪等对该TLCP初生纤维与热处理后的纤维性能进行了研究和表征。The thermotropic liquid-crystalline polyarylate fiber has aroused wide public concern attributable to not only to it＇s high modulus and high strength,but also it＇s good heat resistance,chemical resistance,inherent flame retardancy,low creep and good for processing behavior.In this study,a new TLCP melt polymerized with 4,4＇-diphenyloxide dicarboxylic acid（DODA）,4-acetoxybenzoic acid（ABA）,hydro-quinone diactate（HQA）,2,6-naphthalene dicarboxylic（NDA） and terephthalic acid（TA）,then melt spun into TLCP fibers,and TLCP fibers were heat treated to enhance the breaking strength and Young＇s modu-lus.The thermal properties of the TLCP fibers were investigated by employing differential scanning calorimetry（DSC） and TGA,the structure of the fiber was investigated by optical microscope,and the me-chanical properties were tested by the fiber tensile tester.

关 键 词：热致性液晶聚芳酯 熔融纺丝 热处理 

分 类 号：TQ342.8[化学工程—化纤工业]