CAJ | 학술논문

　　研究了聚芳砜酰胺（ PSA）纤维制备过程中各阶段拉伸倍数对纤维最终力学性能的影响，并制备出最高断裂强度达到3．62 cN/dtex的PSA纤维。要得到综合力学性能较高的PSA纤维，合适的表观喷头拉伸倍数为-50％～30％、塑化拉伸倍数为2、热拉伸倍数为2。 PSA为较难结晶的高聚物，不论是聚合物粉末还是拉伸纤维，其结晶度都较低。 PSA纤维的大分子取向与纤维的断裂强度关系十分密切，大分子取向因子与纤维的断裂强度呈线性关系，提高大分子取向程度是提高PSA纤维强度的重要途径。
　　연구료취방풍선알（ PSA）섬유제비과정중각계단랍신배수대섬유최종역학성능적영향，병제비출최고단렬강도체도3．62 cN/dtex적PSA섬유。요득도종합역학성능교고적PSA섬유，합괄적표관분두랍신배수위-50％～30％、소화랍신배수위2、열랍신배수위2。 PSA위교난결정적고취물，불론시취합물분말환시랍신섬유，기결정도도교저。 PSA섬유적대분자취향여섬유적단렬강도관계십분밀절，대분자취향인자여섬유적단렬강도정선성관계，제고대분자취향정도시제고PSA섬유강도적중요도경。
The effect of drawing ratios to the final mechanical property of PSA fiber during the drawing process is systematically studied in this paper .And PSA fiber with tensile strength of 3.62 cN/dtex was prepared .When the jet stretch ratio was -50%~30%,the plastic drawing ratio was 2 and the hot drawing ratio was 2,the prepared PSA fiber has better mechanical properties .PSA was a kind of polymer which was difficult to crystallize , and the crystallinity of both PSA powder and drawn fibers were low .There was a linear relationship between the macromolec-ular orientation factor and tensile strength of PSA fiber .Improving the macromolecular orientation factor of PSA fiber was an important approach to improve the tensile strength of it .