高低温交变对PVC膜材料拉伸及蠕变性能的影响  

Effect of alternating temperature on tensile and creep properties of PVC membrane materials

作　　者：王霖琳 郭珊珊[2] 李红 蒋金华[1,2] 陈南梁[1,2] WANG Linlin;GUO Shanshan;LI Hong;JIANG Jinhua;CHEN Nanliang(Engineering Research Center of Technical Textile,Ministry of Education,Donghua University,Shanghai 201620,China;College of Textiles,Donghua University,Shanghai 201620,China;China Knitting Industry Association,Beijing 100020,China)

机构地区：[1]东华大学产业用纺织品教育部工程研究中心,上海201620 [2]东华大学纺织学院,上海201620 [3]中国针织工业协会,北京100020

出　　处：《东华大学学报（自然科学版）》2023年第1期14-19,32,共7页Journal of Donghua University(Natural Science)

基　　金：国家重点研发计划资助项目(2016YFB0303300);上海市自然科学基金(20ZR1400600);中央高校基本科研业务费专项资金(2232021G-06)。

摘　　要：为探究使用环境中的温度变化对聚氯乙烯(polyvinylchloride, PVC)膜材料拉伸蠕变性能的影响,选取两种不同织物密度的PVC双轴向经编膜材料,在-40~40℃的交变温度环境中,分别进行200、300和400次循环处理,测试处理前后材料的拉伸与蠕变性能。结果表明:相同高低温交变处理次数下,密度低的PVC膜材料更易受到交变温度场的影响;材料的拉伸蠕变性能随交变处理次数的增加呈先上升后下降的趋势;200次交变温度处理对材料性能的影响较小,400次交变温度处理后材料的拉伸与蠕变性能明显下降;交变温度处理后PVC膜材料的拉伸蠕变性能的各向异性表现得更加明显。In order to investigate the effect of temperature change on the tensile creep properties of polyvinylchloride(PVC) film materials, two kinds of PVC biaxial warp-knitted materials with different fabric density were selected and subjected to 200, 300 and 400 cycles of alternating temperature of-40-40 ℃. The tensile and creep properties of the materials were tested before and after treatment. The results show that the low-density material is more susceptible to the effects of the alternating temperature field under the same number of high and low temperature alternating treatments. The tensile creep property tends to increase and then decrease with the number of alternating treatments. The effect of 200 treatment cycles on the property of the materials is small. While the tensile creep property of the materials decreases significantly after 400 treatment cycles. The anisotropy of tensile creep property of the PVC film materials is more obvious after the alternating temperature treatment.

关 键 词：聚氯乙烯膜材料 拉伸蠕变性能 交变温度 各向异性 

分 类 号：TK332[动力工程及工程热物理—热能工程]