多相剪切增稠液增强柔性层合结构防刺材料的制备及其性能  

Preparation and properties of multiphase shear thickening fluid reinforced flexible laminate-structured puncture-proof materials

作　　者：贾笑娅 王蕊宁 侯宵 何彩婷 刘杰 孙润军 王秋实 JIA Xiaoya;WANG Ruining;HOU Xiao;HE Caiting;LIU Jie;SUN Runjun;WANG Qiushi(School of Textile Science and Engineering,Xi′an Polytechnic University,Xi′an,Shaanxi 710000,China)

机构地区：[1]西安工程大学纺织科学与工程学院,陕西西安710000

出　　处：《纺织学报》2024年第10期113-121,共9页Journal of Textile Research

基　　金：陕西省教育厅重点科学研究计划(重点实验室项目)(20JS049)。

摘　　要：为提高柔性复合材料的防刺性能,制备多相剪切增稠液(MSTFs),并以流变性能为依据探究剪切增稠液的时效性影响因素;其次,采用纯芳纶织物、MSTFs浸渍芳纶织物与碳化硅/聚氨酯(SiC/TPU)涂层芳纶织物制备不同层合结构的复合材料,进行准静态钉刺和动态刀刺性能研究,探究层合结构对防刺性能的影响。结果表明:MSTF易受到空气湿度的影响,随着储存时间的增加,溶液吸湿后流变性能在短时间内下降幅度较大;在单位面密度下,以浸渍织物在上层、纯芳纶织物在中间、涂层织物在下层的层合结构复合材料表现出最佳的准静态钉刺性能,并且该层合结构6层和15层复合材料也表现出较优的动态防刺性能,研究结果可为防刺服用柔性防刺材料的应用研究提供一定的参考。Objective In the general trend of the development of flexible protective equipment,people have higher and higher requirements for protective clothing,flexible puncture-proof material requiring protective materials to be able to simultaneously achieve light weight,good protective effect,and to enhance comfort.High-performance fiber materials are lightweight and textile processable.However,when multiple layers of textiles are stacked up to achieve puncture-proof performance,the final product materials show heavyweight and poor wearing comfort.While high-performance fabric composites effectively improve the puncture resistance,this study aims to improve the puncture resistance of high-performance fabric composites and to investigate the application of composites.Method Multiphase shear thickening fluids(MSTFs)were prepared by dispersing monodisperse phase SiO 2 particles in polyethylene glycol(PEG)200 and adding multi-walled carbon nanotubes(MWCNTs).The shear thickening solution was stored under open exposure,sealed exposure and sealed from light,and the ageing properties of the shear thickening solution were investigated based on the rheological properties.After that,the aramid fabric was impregnated with MSTFs(S),and multilayer composites with different stack structures were prepared by combining silicon carbide/polyurethane(SiC/TPU)coated aramid fabric(T)and untreated aramid fabric(N),and quasi-static stapling and dynamic knife-puncture behaviors were investigated.Results The study investigated the effect of interfacial interaction on the puncture resistance of the composites.It was found that the critical shear rate of MSTFs with the addition of multi-walled carbon nanotubes decreased,the maximum thickening viscosity was increased,and the thickening effect was improved.In this circumstance,the rheological properties of the shear-thickened solution under open exposure storage conditions were decreased more in a short period of time and were easily affected by air humidity.Due to the better water absorption of PEG

关 键 词：多相剪切增稠液 时效性 层合结构 柔性防刺材料 流变性能 芳纶织物 

分 类 号：TS101.8[轻工技术与工程—纺织工程]