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首页> 美国卫生研究院文献>Polymers >Study of UHMWPE Fiber Surface Modification and the Properties of UHMWPE/Epoxy Composite
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Study of UHMWPE Fiber Surface Modification and the Properties of UHMWPE/Epoxy Composite

机译：超高分子量聚乙烯纤维表面改性及超高分子量聚乙烯/环氧复合材料性能的研究

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Ultra-high molecular weight polyethylene (UHMWPE)/epoxy composites with excellent adhesive properties were prepared by forming an interface membrane on the UHMWPE fiber surface. The interface membrane of the UHMWPE fiber and epoxy resin was polymerized by an aldol condensation between polyvinyl alcohol (PVA) and glutaraldehyde. Different surface treatment methods of UHMWPE fibers were optimized and the two-step PVA-glutaraldehyde condensation (Corona-PG-2S) method is the best. The interfacial adhesion between UHMWPE fiber and epoxy resin was enhanced, and the adhesive properties of the composite were improved. X-ray photoelectron spectroscopy (XPS) and energy dispersive spectrum (EDS) results of the fiber treated by Corona-PG-2S shows that the surface oxygen content was up to 25.0 wt %, with an increase of 17.3 wt % compared with the surface oxygen content of unmodified UHMWPE fiber, which indicated that the surface polarity was greatly enhanced. The adhesive properties were improved by improving the polarity of the surface. The peel strength, ultimate cohesive force, tensile strength and flexural strength of the composite treated by Corona-PG-2S were greatly increased to 262.8%, 166.9%, 139.7%, 200.6% compared with those of unmodified samples. The composite prepared by Corona-PG-2S had excellent adhesive properties, demonstrating that the Corona-PG-2S method plays a major role in significantly improving the composite adhesive properties.
机译：通过在UHMWPE纤维表面形成界面膜，制备了具有优异粘合性能的超高分子量聚乙烯（UHMWPE）/环氧复合材料。 UHMWPE纤维和环氧树脂的界面膜通过聚乙烯醇（PVA）和戊二醛之间的醛醇缩合聚合。对UHMWPE纤维的不同表面处理方法进行了优化，以两步法PVA-戊二醛缩合（Corona-PG-2S）方法为最佳。 UHMWPE纤维与环氧树脂之间的界面粘合性得到增强，复合材料的粘合性能得到改善。经Corona-PG-2S处理的纤维的X射线光电子能谱（XPS）和能量色散谱（EDS）结果表明，表面氧含量高达25.0 wt％，比表面氧含量增加了17.3 wt％未改性的UHMWPE纤维的含氧量表明表面极性大大增强。通过改善表面的极性来改善粘合性能。与未经改性的样品相比，经Corona-PG-2S处理的复合材料的剥离强度，极限内聚力，拉伸强度和弯曲强度大大提高至262.8％，166.9％，139.7％，200.6％。由Corona-PG-2S制备的复合材料具有优异的粘合性能，这表明Corona-PG-2S方法在显着提高复合材料的粘合性能方面起着重要作用。

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