CAJ | 학술논문

聚乳酸（PLA）和天丝（Tencel）混纺纱的性能除了受到纤维本身和纱线捻度的影响,也跟纱线混纺比有很大关系。实验以不同混纺比的PLA/Tencel混纺纱为基本素材,进行力学性能测试,通过实验数据的分析,探索纱线力学性能随混纺比变化的规律。结果表明,标准状态下,混纺纱的强度随PLA质量分数的减少先减小后增大,混纺比在质量分数PLA60%/Tencel40%时,纱线强度降到最低点;混纺纱的湿强度随混纺比的变化趋势与干强度基本一致,临界混纺比相差也不大;混纺纱弹性回复率随PLA质量分数的减少,先增大后减小,PLA质量分数为70%时,纱线弹性回复率最大,纯Tencel纱线弹性回复率最小。
취유산（PLA）화천사（Tencel）혼방사적성능제료수도섬유본신화사선념도적영향,야근사선혼방비유흔대관계。실험이불동혼방비적PLA/Tencel혼방사위기본소재,진행역학성능측시,통과실험수거적분석,탐색사선역학성능수혼방비변화적규률。결과표명,표준상태하,혼방사적강도수PLA질량분수적감소선감소후증대,혼방비재질량분수PLA60%/Tencel40%시,사선강도강도최저점;혼방사적습강도수혼방비적변화추세여간강도기본일치,림계혼방비상차야불대;혼방사탄성회복솔수PLA질량분수적감소,선증대후감소,PLA질량분수위70%시,사선탄성회복솔최대,순Tencel사선탄성회복솔최소。
As a kind of new biomass textile fiber material,PLA and Tencel have excellent performance and promising future.The property of PLA /Tencel blending yarn is not only influenced by the fiber itself and yarn twist,but also has near relationship with the yarn blending ratio.This paper is based on the PLA /Tencel blending yarn;we test the mechanical properties,including the strength,wet strength under the standard condition,and the test of elastic properties.We explore the rules of the yarn mechanical properties which changes with the blending ratio.The experiment result shows that with the decrease of the PLA,the blending yarn’s strength decreases at first,and then increases,the yarn strength reduces to a minimum when the blending ratio is PLA60%/Tencel40%.The tendency of the blending yarn’s wet strength with the blend ratio is basically consistent with the dry strength,the difference of the critical blending ratio shows small.With the decrease of the PLA,the elastic recovery rate increases at first,and then decreases.The yarn elastic recovery rate reaches high when the percentage of the PLA is 70% and the elastic recovery rate of the pure Tencel yarn reaches low.