织物骨架增强的TPU复合膜制备与力学性能  

Preparation of fabric reinforced TPU composite film and its mechanical properties

作　　者：李猛 刘洪静[1] 尚坤[1] 杨洪瑞 王荣青 LI Meng;LIU Hongjing;SHANG Kun;YANG Hongrui;WANG Rongqing(ational Key Laboratory of Human Factors Engineering,China Astronaut Research and Training Center,Beijing 100094,China)

机构地区：[1]中国航天员科研训练中心人因工程重点实验室,北京100094

出　　处：《上海纺织科技》2023年第11期59-62,78,共5页Shanghai Textile Science & Technology

基　　金：人因工程重点实验室基金项目(SYFD062003)。

摘　　要：以平纹机织物、经编针织物与网格织物为骨架增强材料,采用熔融挤出成膜法制备热塑性聚氨酯复合膜。通过电子拉力试验机、显微镜及无水乙醇染色溶液浸润等分析检测手段,研究了TPU复合膜的力学性能与组织形貌特征。结果表明:聚芳酯与超高分子量聚乙烯(UHMWPE)纤维的低伸长特性,能够约束TPU复合膜在其TPU弹性形变区间内工作,以织物骨架增强的TPU复合膜能够有效改善TPU膜制品的缺口敏感性;采用多元离散系数对同一织物骨架TPU复合膜的力学性能进行综合评价,以UHMWPE网格织物增强的TPU复合膜的S值最小,为0.044,优于聚芳酯网格织物增强的TPU复合膜(0.132)、锦纶平纹机织物增强的TPU复合膜(0.179)及锦纶经编针织物增强的TPU复合膜(0.19)。A thermoplastic polyurethane(TPU)composite film is prepared using plain woven fabric,warp knitted fabric and mesh fabric as skeleton reinforcement materials by melt extrusion film-forming method.The mechanical properties and microstructure characteristics of TPU composite film are studied by electronic tensile testing machine,microscope and anhydrous ethanol staining solution infiltration analysis and detection methods.The results suggest that the low elongation characteristic of polyarylate fiber and UHMWPE fiber can constrain the TPU composite film to work within its TPU elastic deformation range.TPU composite film reinforced with fabric skeletons can effectively improve the notch sensitivity of TPU film products.The mechanical properties of the same fabric skeleton TPU composite membrane are comprehensively evaluated using multiple discrete coefficient.The S value of the TPU composite membrane reinforced with UHMWPE mesh fabric is the smallest,0.044,which is better than that of the TPU composite membrane reinforced with polyarylate mesh fabric(0.132),nylon plain woven fabric reinforced TPU composite membrane(0.179),and nylon warp knitted fabric reinforced TPU composite membrane(0.19).

关 键 词：复合材料 热塑性聚氨酯 聚酰胺纤维 聚芳酯纤维 超高分子量聚乙烯纤维 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]