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链延长的超高分子量聚乙烯纤维(UHMWPE)在环氧树脂、乙烯基酯类和聚乙烯基体复合材料中的应用,不仅提高了材料的比强度和韧性,而且使其它性能得到改善。其突出的抗冲击性和介电性赋予它在防护屏蔽、电子和结构材料方面应用的巨大潜力。Allied-Signal公司开发的UHMWPE纤维的密度只相当于芳酰胺纤维的2/3,而实验表明,它的冲击性能比芳酰胺纤维高25%。UHMWPE纤维复合材料能有效地吸收低速冲击能量,可将冲击所造成的破坏降低到最低限度。
The use of chain extended UHMWPE in epoxy, vinyl ester and polyethylene matrix composites not only increases the specific strength and toughness of the material, but also improves other properties. Its outstanding impact resistance and dielectric properties give it great potential for shielding shielding, electrical and structural applications. UHMWPE fibers developed by Allied-Signal have a density that is only about two-thirds that of aramid fibers, and experiments have shown that they have 25% higher impact properties than aramide fibers. UHMWPE fiber composite material can effectively absorb low-speed impact energy, impact damage can be reduced to a minimum.