以UHMWPE纤维、水性PU树脂为原料,借助滚筒式UD机制备系列UD布。采用万能材料实验机测试UD布的拉伸性能,重点研究单丝强度、含胶量对UD布拉伸性能的影响规律。结果表明,UD布的拉伸强度随着单丝强度的增加而增加;UD布的能量吸收与单丝强度、单丝断裂伸长率的综合指标相关。在一定范围内,UD布的拉伸强度随着含胶量的增加而增加;当含胶量较低时,UD布拉伸破坏时会出现明显的分层现象。
Using ultrahigh molecular weight polyethylene(UHMWPE) fiber and waterborne polyurethane(WPU) resin as raw materials,a series of UD cloths were prepared with the help of a drum type UD machine.The tensile properties of UD cloths were tested using the 5969H Instron universal material testing machine.The influence of the monofilament intensity and resin content on the tensile property of UD cloth was focused researched.The results shown that the tensile strength of UD cloth increased with the increase of monofilament strength;the energy absorption of UD cloth was related to the comprehensive indexes of monofilament strength and elongation at break.Within a certain range,the tensile strength of UD cloth increased with the increase of the resin content.When the resin content was low,obvious delamination will occur when the UD cloth was stretched and broken.The references for the structural design and performance optimization of UD cloth were provided.
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基金资助
江苏省高校自然科学研究重大项目(18KJA430011);江苏省大学生创新训练项目(202010304101Y);江苏省先进纺织工程技术中心开放基金重大项目(XJFZ/2018/02);南通大学纺织服装学院研究生自主创新项目(FZ201901)
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