摘要
在高温、紫外线照射和简单光热复合作用3种条件下处理Kevlar、Nomex长丝和它们的短纤维混纺纱线,测试所有试样的断裂强力和断裂伸长,研究3种试样的光热稳定性。结果表明:高温对3种试样拉伸性能的影响非常明显,250℃以上的高温处理会导致纱线强力严重损失;随着紫外线照射时间的增加,3种试样断裂强力都明显下降;光热复合作用会导致试样拉伸性能更为剧烈地下降。
The thermal resistance and light stability of Kevlar and Nomex filaments as well as their staple blended yarns were investigated in three different environmental conditions. One condition was set with 150℃, 200℃, 250℃ and 300℃ for 1 h, 2 h and 3 h. The second condition was set with exposure to ultraviolet radiation for 10 h, 20 h, 30 h and 40 h. The last condition was firstly exposured to ultraviolet radiation for 20 h, then dealt with 200℃ for another 2 h. The tensile properties of prepared samples under conditions mentioned above were tested. It was indicated that high temperature had significant influence on tensile properties of samples. Temperature above 250 ℃ caused great decreasing of the tensile properties of all samples, and the breaking strength and elongation decreased with the increasing of the treating time. The combined action with high temperature and ultraviolet radiation easily caused decreasing of tensile strength.
出处
《合成纤维》
CAS
北大核心
2008年第1期21-24,共4页
Synthetic Fiber in China
关键词
芳纶
光热稳定性
紫外线
复合作用
aramid fiber, thermal resistance and light stability, ultraviolet radiation, combined action
