乙烯-四氟乙烯共聚纤维的性能

纺织学报 ›› 2016, Vol. 37 ›› Issue (12): 6-11.

乙烯-四氟乙烯共聚纤维的性能

收稿日期:2016-01-20 修回日期:2016-09-05 出版日期:2016-12-15 发布日期:2016-12-21

Proerties of ethylene-tetrafluoroethylene copolymer fibers

Received:2016-01-20 Revised:2016-09-05 Online:2016-12-15 Published:2016-12-21

摘要/Abstract

摘要：

为实现乙烯-四氟乙烯（ETFE）共聚纤维工业规模开发，通过熔融纺丝法制备了ETFE共聚初生纤维，并将初生纤维在150 ℃条件下通过电子拉伸试验机进行定长拉伸，得到拉伸比为100％和200％的纤维。利用热重分析仪、差示扫描量热分析仪、X射线衍射仪、动态热机械分析仪和电子拉伸机等分别测试了纤维的热性能、结晶结构、力学性能。测试得出：ETFE共聚热分解温度约为477℃；不同拉伸倍率纤维的熔融温度均保持在259℃左右；拉伸200％纤维断裂强度约为160MPa，是初生纤维的3倍。结果表明：随拉伸倍率的提高，ETFE共聚纤维玻璃化转变温度提高9℃，结晶度和晶区取向度分别提高了10.2% 和 5.5%；经浓硫酸、氢氧化钠溶液、丙酮和次氯酸钠试剂处理后各纤维断裂强度均无明显变化，表现出良好的耐化学试剂性能。

关键词: 乙烯四氟乙烯共聚物, 熔融纺丝成形, 拉伸比, 纤维结构, 纤维性能

Abstract:

In order to achieve the development of industrial scale of ethylene-tetrafluoroethylene (ETFE) copolymer fibers, ETFEcopolymer as-spun fibers were prepared by spinning, and were stretched by and electronic tensile machine at 150 °C to obtain fibers with the stretch artio of 100% and 200%, respectively. Thermal properties, crystal structure and mechanical properties of fibers were researched by thermogravimetric analyzer (TG), differential scanning calorimeter (DSC), X-ray diffractometer (XRD) , dynamic mechanical analyzer (DMA) and electronic tensile testing machine, respectively. The results show that the thermal decomposition temperature of ETFE copolymer is about 477℃. The melting temperatures of fibers of different draw ratio are all about 259°C. The breaking strength of fibers stretched by 200% is 160 MPa, which is close to three times of as-spun fibers. The DMA and XRD indicate that with the increasing of the stretch ratios, glass transition temperature of ETFE copolymer fibers is increased by 9℃. In the meantime, the crystallinity improved by 10.2% and 5.5% respectively. Besides, the breaking strength of all kinds of fibers has no obvious change after treating with H2SO4, acetone and NaClO, which shows the eexcellent resistance to chemical reagents.

Key words: ethylene-tetrafouoroethylene copolymer, melt-spinning, stretch ratio, fiber structure, fiber property

孙乐乐肖长发潘键赵健陈凯凯. 乙烯-四氟乙烯共聚纤维的性能[J]. 纺织学报, 2016, 37(12): 6-11.

参考文献

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