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Study on Manufacturing PCT/PPS Flame Retardant Fiber by Sheath/Core Conjugate Spinning
Fibers and Polymers ( IF 2.5 ) Pub Date : 2020-03-22 , DOI: 10.1007/s12221-020-9082-x
Jong Cheol Lim , Yong Wan Park , Hwan Chul Kim

In this study, fiber for wigs was produced by a sheath/core conjugate spinning machine using poly PCT (cyclohexanedimethanol terephthalate) as a sheath polymer and PPS (polyphenylene sulfide) as a core polymer. In order to withstand the high temperature of hot irons used in hair salons, the fiber was made of high heat resistant polymers. Also, an epoxy-type chain extender was added so that the MFI (melt flow index) of PCT, which had a lower melt velocity than PPS, could become similar to that of PPS. In addition, a phosphorus flame retardant was added to PCT, which has no flame retardancy, so that the limiting oxygen index (LOI) was raised to over 29. The strength and elongation of the manufactured yarn varied depending on the drawing method, draw ratio, and heat set temperature. The strength increased as the un-drawn yarn passed faster through the draw roller, and it also increased as the draw ratio increased. As the heat set temperature increased, the strength increased and the elongation decreased. The strength and the elongation of the PCT/PPS conjugate fiber were in the middle of the ranges of those of the single spun PCT and PPS fibers.



中文翻译:

鞘/芯共轭纺丝制备PCT / PPS阻燃纤维的研究

在这项研究中,假发用纤维由皮/芯共轭纺丝机生产,使用聚PCT(环己烷二甲醇对苯二酸酯)作为皮聚合物,而PPS(聚苯硫醚)作为芯聚合物。为了承受发廊中使用的高温熨斗的高温,纤维由高耐热性聚合物制成。另外,添加了环氧型扩链剂,使得具有比PPS低的熔融速度的PCT的MFI(熔体流动指数)可以变得与PPS相似。另外,向阻燃剂PCT中添加了磷阻燃剂,该阻燃剂没有阻燃性,因此极限氧指数(LOI)升高到29以上。制得的纱线的强度和伸长率取决于拉伸方法,拉伸比,并设定温度。强度随着未拉伸纱线更快地通过拉伸辊而增加,并且随着拉伸比的增加而增加。随着热定型温度的增加,强度增加,伸长率降低。PCT / PPS复合纤维的强度和伸长率处于单纺PCT和PPS纤维的强度和伸长率范围的中间。

更新日期:2020-04-21
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