摘要
为拓展含二氮杂萘酮结构的聚芳醚酮(PPEK)高性能树脂在纤维材料领域的应用,采用对氯苯酚与1,1′,2,2′-四氯乙烷(二者体积比为1∶1)混合溶剂溶解PPEK制备纺丝液,通过干法纺丝得到PPEK纤维。借助旋转流变仪、差示扫描量热仪、偏光显微镜、拉伸试验机、X射线衍射仪以及声速取向仪等对PPEK纺丝液以及PPEK纤维的结构与性能进行表征。结果表明:PPEK质量分数为40%时,最优纺丝温度为140℃;初生PPEK纤维经1.43倍热拉伸后,其断裂强度为167.6 MPa,弹性模量为4.6 GPa,声速取向因子为0.5705;经热拉伸后,PPEK纤维保持无定形态,且玻璃化转变温度均高于250℃,具有良好的耐热性能。
To expand applications of poly(phthalazinone ether ketone)(PPEK)in fiber preparation,PPEK fibers were prepared by dry spinning with PPEK and mixed solvent of p-chlorophenol and 1,1′,2,2′-tetrachloroethane(volume ratio is 1∶1).PPEK solution and PPEK fibers were characterized by rotating rheometer,differential scanning calorimeter,polarizing microscope,universal tensile tester,X-ray diffractometer and fiber sound velocimeter.The results show that optimal spinning temperature of 40%PPEK solution is 140℃.After being elongated by 1.43 times,breaking strength,elastic modulus and sonic orientation factor of PPEK fibers reach 167.6 MPa,4.6 GPa and 0.5705,respectively.Hot elongated PPEK fibers has good heat resistance and remains amorphous with glass transition temperature of higher than 250℃.
作者
董大林
宾月珍
蹇锡高
DONG Dalin;BIN Yuezhen;JIAN Xigao(School of Chemical Engineering, Dalian University of Technology, Dalian, Liaoning 116024, China;Liaoning Province Engineering Technology Center of High Performance Resins, Dalian, Liaoning 116024, China)
出处
《纺织学报》
EI
CAS
CSCD
北大核心
2020年第12期1-6,共6页
Journal of Textile Research
基金
国家自然科学基金项目(21374014,U1663226)。
关键词
聚芳醚酮
二氮杂萘酮
混合溶剂
干法纺丝
耐高温性能
poly(aryl ether ketone)
diazanaphthalene
mixed solvent
dry spinning
high temperature resistance performance
