丙纶BCF卷曲性能试验方法探究

Exploration on Test Methods of Crimp Property of Polypropylene Fiber BCF

以卷曲收缩率、卷曲模量和卷曲稳定度为考察指标,采用L18(61×33)正交试验,探讨显现温度、预加张力、显现时间和平衡时间丙纶BCF卷曲性能的影响。结果表明,各因素对卷曲收缩率的影响大小顺序是:预加张力>显现温度>平衡时间>显现时间;各因素对卷曲模量的影响大小顺序是:预加张力>显现温度>平衡时间>显现时间;各因素对卷曲稳定度的影响大小顺序是:显现温度>显现时间>平衡时间>预加张力;经进一步单因素重负荷试验,结果表明丙纶BCF卷曲性能试验最优化条件为:显现温度90℃;预加张力0;显现时间10min;平衡时间30min;重负荷0.4414cN·dtex-1。以热卷曲伸长率为考察指标,探讨显现温度、显现时间和平衡时间对丙纶BCF热卷曲伸长率的影响,结果表明丙纶BCF热卷曲伸长率试验最优化条件为:显现温度100℃;自然卷曲状态下显现;显现时间10min;平衡时间2h或以上。

This paper discusses the influence of apparent temperature, pre-tension, apparent time and equilibrium time on crimp shrinkage of polypropylene fiber BCF with survey indicators of crimp shrinkage, crimp modulus and crimp stability by L18 （6^1× 3^2 ）orthogonal experiment. The result shows that the order of influence of various factors on crimp shrinkage： pre-tension〉apparent temperature〉equilibrium time.apparent time; the order of influence of various factors on crimp modulus is： pre-tension〉apparent temperature〉 equilibrium time〉apparent time; the order of influence of various factors on crimp stability is： apparent temperature〉apparent time〉equilibrium time〉pre-tension, through turther test of single factor of heary looding, the result shows that optimal conditions of crimp performance test of polypropylene fiber BCF are： apparent temperature 90℃ ; pre-tension 0; apparent time 10rain; equilibrium time 30rain; heavy loading 0. 4414cN 〉 dtex^-1. This paper discusses the influence of apparent temperature, apparent time and equilibrium time on thermal crimp elongation of polypropylene fiber BCF with thermal crimp elongation as survey indicator. The result shows that optimal conditions for thermal crimp elongation test of polypropylene fiber BCF are： ap apparent time 10min and equilib parent temperature 100〉C ; appear under natural crimp state; rium time 2h or above.