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新型抗冲击吸能材料STG的结构和性能分析
夏艳丽, 俞科静, 钱坤, 蒋玲玲
江南大学生态纺织教育部重点实验室, 无锡 214122
摘要:
为了减小震动冲击对人体的伤害,本文制备了一种具有缓冲作用的剪切增稠凝胶(STG),对其红外和流变性能进行了初步研究,将STG与聚氨酯泡沫(PU)结合提高泡沫的抗冲击性能,通过扫描电镜观察复合前后聚氨酯泡沫的微观形貌。结果表明:B原子顺利地引入硅氧烷链中;有明显的蠕变和剪切增稠性质;STG已经均匀的附着在泡沫泡壁上,并显著提高了聚氨酯泡沫材料的抗冲击性能,当速度达到9 m/s时,纯PU的剩余载荷约为3.6 kN,STG-PU的剩余载荷仅为1.7 kN左右,剩余载荷的减少量达到了53%。
关键词:  剪切增稠凝胶  聚氨酯泡沫  红外  流变性能  抗冲击性能
DOI:10.12044/j.issn.1007-2330.2018.02.008
分类号:TB332
基金项目:连云港市产业前瞻与共性关键技术科技项目(CG1520);江苏高校优势学科建设工程资助项目(PAPD);"十三五"国家重点研发计划项目(项目编号2016YFB0303200,课题编号2016YFB0303205);中央高校基本科研业务费专项资金资助(JUSRP51505);江苏省产学研联合创新资金-前瞻性联合研究项目(BY2015019-33)
Structure and Properties of Novel Impact Resistance and Energy-Absorbing Material STG
XIA Yanli, YU Kejing, QIAN Kun, JIANG Lingling
Key Laboratory of Eco-Textile of Ministry of Education, Jiangnan University, Wuxi 214122
Abstract:
In order to reduce the damage of the shock to the human body, a kind of shear thickening gel (STG) with buffering effect was prepared. The infrared and rheological properties of the shear thickening gel (STG) were studied. Foam (PU) was used to improve the impact resistance of foam, and the microstructure of polyurethane foam was observed by scanning electron microscopy. The results show that B atoms are successfully introduced into the siloxane chain and have obvious creep and shear thickening properties. STG has been uniformly attached to the bubble wall and significantly improved the impact resistance of the polyurethane foam. When the speed reaches 9m/s, the residual load of pure PU is about 3.6kN, the residual load of STG-PU is only about 1.7kN, and the reduction of residual load reaches 53%.
Key words:  Shear thickening gel  Polyurethane foam  FTIR  Rheological properties  Impact resistance