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以1 600 D超高分子量聚乙烯(UHMWPE)纤维为原料,采用APP-350型常压等离子体混合处理设备对纤维进行表面处理,处理工艺包括电压(150、175、200 V)和时间(60、70、80、90、100、110 s);以水性聚氨酯(PU)、无水乙醇组成树脂体系,与处理前后的UHMWPE纤维复合制成UHMWPE/PU复合材料。利用Instron 3385H型万能材料试验机对处理前后的UHMWPE纤维及复合材料进行拉伸性能测试,重点分析了等离子体处理工艺(电压、时间)对UHMWPE纤维拉伸性能的影响规律。采用KYKY-2800B型SEM观察纤维的微观形貌变化。通过JC2000C型接触角测量仪测试纤维的接触角。结果表明:等离子体处理对UHMWPE纤维表面有明显的刻蚀作用;纤维接触角与拉伸性能均随着电压、时间的增加而下降;等离子体处理的UHMWPE/PU复合材料的拉伸性能明显好于未经处理的复合材料。
The fibers were surface-treated with APP-350 atmospheric pressure plasma hybrid processing equipment using 1 600 D UHMWPE fibers as raw materials, and the treatment processes included voltage (150,175,200 V) and time , 70,80,90,100,110 s); UHMWPE / PU composites were made by compounding waterborne polyurethane (PU) and absolute ethanol with resin before and after UHMWPE treatment. Tensile properties of UHMWPE fibers and composites before and after treatment were tested by Instron 3385H universal testing machine. The influence of plasma treatment process (voltage and time) on the tensile properties of UHMWPE fibers was analyzed. Using KYKY-2800B SEM observation of fiber morphology change. The contact angle of the fiber was measured by a JC2000C contact angle meter. The results show that plasma treatment has a significant effect on the surface of UHMWPE fiber. The contact angles and tensile properties of UHMWPE fibers decrease with the increase of voltage and time. The tensile properties of UHMWPE / PU composites treated by plasma are better For untreated composites.