高强抗紫外PET工业丝的生产试验与表征  

Production test and characterization of high-strength ultraviolet-resistant PET industrial yarn

作　　者：宋明根 刘岩 姬洪 亓书奎 彭治汉[2] 张玉梅[2] SONG Minggen;LIU Yan;JI Hong;QI Shukui;PENG Zhihan;ZHANG Yumei(Zhejiang Unifull Industrial Fiber Co.,Ltd.,Huzhou 313017;State Key Laboratory for Modification of Chemical Fibers and Polymer Materials,Donghua University,Shanghai 201620)

机构地区：[1]浙江尤夫高新纤维股份有限公司,浙江湖州313017 [2]东华大学纤维材料改性国家重点实验室,上海201620

出　　处：《合成纤维工业》2021年第2期6-11,共6页China Synthetic Fiber Industry

基　　金：国家重点研发计划支持项目(2016YFB0303004);湖州市南太湖精英计划创新团队项目(2016HJYLB-03-B)。

摘　　要：将含纳米二氧化钛(TiO_(2))的母粒添加到常规高黏聚对苯二甲酸乙二醇酯(PET)切片中,采用熔融共混挤出的方法制备高强抗紫外PET工业丝。在研究TiO_(2)对高黏PET流变性能和结晶性能影响的基础上,进行高强抗紫外PET工业丝工业化试验,试验中针对性地调整纺丝工艺,制得了不同TiO_(2)含量的高强抗紫外PET工业丝,并对其结构和性能进行了研究。结果表明:添加TiO_(2)的高黏PET体系具有良好的可纺性,无毛丝出现,整体生产稳定;当TiO_(2)质量分数小于2.0%时,高强抗紫外PET工业丝的断裂强度大于8.0 cN/dtex;随着TiO_(2)含量的增加,高强抗紫外PET工业丝表面粗糙,结晶度降低,力学性能下降;高强抗紫外PET工业丝织物对紫外线UVA区透射率均小于5%,紫外线防护系数大于50,具有优异的防紫外透过性能;经过200 h人工紫外灯加速老化实验后,高强抗紫外PET工业丝强度保持率没有提高。The masterbatch containing nano-titanium dioxide(TiO_(2))was added into conventional high-viscosity polyethylene terephthalate(PET)chips and was produced into high-strength ultraviolet-resistant PET industrial yarns by melt blending extrusion.Based on the study of the effect of TiO_(2)on the rheological properties and crystallization properties of high-viscosity PET,the industrial production test of high-strength ultraviolet-resistant PET industrial yarn was carried out.And the high-strength ultraviolet-resistant PET industrial yarn with different TiO_(2)content was prepared by adjusting the spinning process in the test.Their structure and properties were studied.The results showed that the high-viscosity PET system added with TiO_(2)had good spinnability and guaranteed stable production with no broken filament;the breaking strength of high-strength ultraviolet-resistant PET industrial yarn was higher than 8.0 cN/dtex when the mass fraction of TiO_(2)was less than 2.0%;the surface of high-strength ultraviolet-resistant PET industrial yarn became rough and the crystallinity and mechanical properties decreased with the increase of TiO_(2)content;the high-strength ultraviolet-resistant PET industrial fabrics had excellent anti-ultraviolet transmission performance with UVA transmittance below 5%and ultraviolet protection coefficient above 50;and the strength retention rate of high-strength ultraviolet-resistant PET industrial yarn did not rise after 200 h artificial ultraviolet lamp accelerated aging test.

关 键 词：聚对苯二甲酸乙二醇酯纤维 工业丝 抗紫外 高强度 工业化试验 纺丝工艺 结晶 结构 

分 类 号：TQ342.21[化学工程—化纤工业]