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首页> 外文期刊>Journal of Materials Science >Developing an ecologically friendly isothermal bath to obtain a new class high-tenacity and high-modulus polypropylene fibers
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Developing an ecologically friendly isothermal bath to obtain a new class high-tenacity and high-modulus polypropylene fibers

机译：开发生态友好型等温浴，以获得新型的高强度，高模量聚丙烯纤维

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A number of production methods have been developed for high-performance fibers; however, most processes use toxic solvents or generate a lot of unwanted by-products. Our research resulted in the development of a new family of high-performance polypropylene (PP) fibers by utilizing a simple, ecologically friendly bath (ECOB). Various commodity polymers can be used with ECOB melt spinning system at high throughputs and performance benefits. Our treated as-spun PP fibers had a highly oriented, but not crystalline precursor morphology with f _a up to 0.6 generating superior mechanical properties. After drawing at draw ratios of 1.49 at 120 C, highly oriented crystalline and amorphous phases were achieved for the drawn fibers with f _c and f _a values of 0.95 and 0.87, respectively. This fine structure for ECOB-treated fibers resulted in tenacity close to 12 g/d, initial modulus higher than 150 g/d, and ultimate elongation at break of 20 %. The polymer melting point of the new fibrillar PP fibers increased by 9 C.
机译：已经开发出许多用于高性能纤维的生产方法;这些方法包括：但是，大多数过程都使用有毒溶剂或产生大量不需要的副产物。我们的研究通过使用简单的生态友好型浴液（ECOB）导致了高性能聚丙烯（PP）纤维新系列的开发。各种商品聚合物可以与ECOB熔体纺丝系统一起使用，并具有很高的产量和性能优势。我们处理过的初纺PP纤维具有高取向性，但结晶前驱体形态却没有，f _a高达0.6，可产生优异的机械性能。在120℃下以1.49的拉伸比拉伸后，对于f _c和f _a值分别为0.95和0.87的拉伸纤维，获得了高度取向的结晶相和非晶相。 ECOB处理过的纤维的这种精细结构导致强度接近12 g / d，初始模量高于150 g / d，断裂极限伸长率为20％。新型原纤PP纤维的聚合物熔点提高了9C。

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