涤纶织物/聚氯乙烯(PET/PVC)柔性复合材料具有质轻、高强及良好的可加工性能,被广泛应用于体育休闲、广告印刷等户外产品.然而,在高温、高湿等极端环境中,PET/PVC极易因吸水而造成自身力学性能的下降.采用含氟丙烯酸酯嵌段共聚物对PET织物进行改性,然后通过涂覆法得到抗芯吸PET织物增强PVC树脂基柔性复合材料(F-PET/PVC),进而探究其耐湿热老化机理.结果表明:当抗芯吸剂浓度为20 g/L时,PET织物的水接触角从0°增大至114.5°,F-PET/PVC的芯吸高度降低了约 94.29%,且剥离性能降幅较小,约为 15.87%.此外,湿热老化测试表明F-PET/PVC的耐湿热老化性能优于PET/PVC,其界面剥离强度和拉伸强度损失率分别由 7.41%和 3.61%下降为 3.08%和0.48%,有望为环境用织物增强树脂基复合材料的耐久性设计提供参考.
Polyester fabric/polyvinyl chloride(PET/PVC)flexible composites were widely used in outdoor products such as sports and leisure,advertising and printing due to its light weight,high strength and good processability.However,under extreme weather conditions such as high temperature and high humidity for a long time,it was very easy to decrease the mechanical properties due to water absorption.Therefore,PET fabric was modified by fluorine-containing block copolymer,and then the wicking resistant PET fabric reinforced PVC resin matrix flexible composites(F-PET/PVC)were obtained by roll coating,then,the mechanism of hygrothermal aging was further explored.The results show that the water contact angle of PET fabric increases from 0° to 114.5°,the wicking height of F-PET/PVC decreases by about 94.29%,and the peeling performance decreases by about 15.87%,when the concentration of anti-wicking agent reaches 20 g/L.In addition,the hygrothermal aging test shows that the hygrothermal aging resistance of F-PET/PVC is better than that of PET/PVC,and the interfacial peeling strength and tensile strength loss rate is decreased from 7.41%and 3.61%to 3.08%and 0.48%,respectively.It is expected to provide a reference for the durability design of environmental fabric-reinforced resin matrix composites.
喻鹏祥;孟扬;史晨;苏娟娟;韩建;叶华亦
浙江理工大学 纺织科学与工程学院(国际丝绸学院),杭州 310018浙江理工大学 纺织科学与工程学院(国际丝绸学院),杭州 310018||浙江理工大学 浙江省产业用纺织材料制备技术研究重点实验室,杭州 310018浙江锦达新材料股份有限公司,浙江 海宁 314419
化学工程
抗芯吸;PET/PVC;界面剥离;湿热老化
anti-wicking;PET/PVC;interface stripping;hygrothermal aging
《材料工程》 2024 (002)
235-244 / 10
10.11868/j.issn.1001-4381.2022.000976
评论