王景景

摘 要：随着超高分子量聚乙烯（UHMWPE）纤维在轻质复合材料方面的应用越来越广泛，UHMWPE纤维作为增强基体制造符合材料的研究日益深入，但经过三维编织结构加工成的复合材料的应用性能研究尚在初期。本文以UHMWPE纤维做为轻质增强基体，采用三维编织的方法，经过真空模塑成型（VARTM）工艺制备复合材料。在相同的真空注塑成型工艺条件下，对比不同编织结构对复合材料的树脂体积分数、面密度、弯曲性能和抗拉伸性能的影响。通过对比深交联、浅交弯联、浅交直联编织结构VARTM制备的复合材料力学性能，结果表明：深交联结构复合材料的力学性能优于浅交弯联和浅交直联结构三维复合材料。

关键词：UHMWPE纤维;三维编织;复合材料;应用性能;深交联

中图分类号： TQ342.61

文献标志码：A

文章编号：1009-265X（2021）04-0012-06

Abstract： UHMEPE fiber is more and more widely applied in lightweight composites. The research of UHMWPE fiber as reinforcing matrix to manufacture composites is deepening， but the application performance of composites fabricated by3D weaving structure is still in the early stage. In this paper， the composites were prepared with three-dimensional weaving method by using UHMWPE fiber as the lightweight reinforcing matrix， and vacuum assistant resin transfer molding （VARTM）. In the same VARTM process conditions， the effects of different weaving structures on resin volume fraction， surface density， bending properties and tensile properties were compared. The mechanical properties of the composites prepared by deep cross-linked， shallow cross-linked bending-connected， and shallow cross-linked straight-connected braided VETM were compared. The results showed that the mechanical property of deep cross-linked composite was better than that of shallow cross-linked bending-connected and shallow cross-linked straight-connected three-dimensional composites.

Key words： UHMWPE fiber; three-dimensional weave; composite; application performance; deep cross-linked

随着全球纤维材料技术的进步，各行业在特种纤维开发与应用方面的研究越来越成熟，纤维材料已在多个领域取代金属材料，成为首选的复合材料增强基体[1]。尤其是以碳纤维、芳纶、超高分子量聚乙烯（UHMWPE）纤维的应用性能最为瞩目。在复合材料领域，碳纤维和芳纶纤维已被大范围应用。近年来，因UHMWPE纤维具有较碳纤维和芳纶更低的加工成本，及更为优良的使用性能如强度、化学稳定性、低密度、耐冲击等性能[2-3]使其在防护材料、医用高分子材料、海事绳缆、轻质装甲等方面的研究及应用越来越广泛。在适宜的应用条件下有取代碳纤维及芳纶纤维的趋势。不同品种高强度纤维的性能对比见表1。……