新型超高分子量聚乙烯膜材料防弹性能及机理

doi:10.3969/j.issn.1000-1093.2021.11.019

摘要/Abstract

摘要： 超高分子量聚乙烯（UHMWPE）膜材料是近年来出现的新型防弹材料，具有与UHMWPE防弹无纬布不同的结构形式。采用1.1 g标准模拟破片、51式7.62 mm钢被甲铅芯弹和9 mm巴拉贝鲁姆铜被甲铅芯弹，对两类UHMWPE材料叠层靶片进行射击试验，研究两类材料的分子量、结晶度、力学特征以及防弹效能系数对其弹道极限v₅₀值、比吸能值和凹陷深度方面的影响，对其防弹性能进行理论分析，并结合弹着点形貌，对比研究了两类材料的防弹机理。结果表明：两类材料的分子量、结晶度、拉伸强度以及拉伸模量与其防弹性能呈正相关，较小的断裂伸长率更有利于减小凹陷深度；膜材料的条带结构更有利于材料承载应力、能量传播和能量耗散。因此，UHMWPE膜材料在弹道防护领域将具有很好的应用前景。

关键词: 超高分子量聚乙烯, 膜材料, 防弹性能, 防弹机理

Abstract: Ultra-high molecular weight polyethylene(UHMWPE) film is a new type of bullet-proof material that has appeared in recent years. It has the different structural characteristics from UHMWPE UD.1.1 g standard simulation fragments，Type 51 7.62 mm steel armored lead-core bullets and 9 mm Perabellum copper armored lead-core bullet are used to conduct shooting tests on two types of UHMWPE material laminated targets.The influences of the molecular weights，crystallinities，mechanical characteristics and ballistic efficiency coefficients of the two types of materials on their ballistic limit v₅₀ values，specific energy absorption value and depression depth are studied. Their bullet-proof performances are theoretically analyzed. And the bullet-proof mechanisms of the two types of materials are compared and studied from the morphology of the impact point. The results indicate that the molecular weights，crystallinities，tensile strengths，tensile moduli，and ballistic efficiency coefficients of the two types of materials are positively correlated with their bullet-proof performances，and a smaller elongation at break is more conducive to reducing the depression depth.Analysis of the bullet-proof mechanism found that the tape structure of film is more conducive to the bearing stress of material，energy transmission and energy dissipation.Therefore，UHMWPE film has good application prospects in the field of bullet-proof protection.

Key words: ultra-highmolecularweightpolyethylene, filmmaterial, bullet-proofperformance, bullet-proofmechanism

中图分类号:

TQ325.1⁺2

付杰，李伟萍，黄献聪，刘强，刘晓林，马天. 新型超高分子量聚乙烯膜材料防弹性能及机理[J]. 兵工学报, 2021, 42(11): 2453-2464.

FU Jie， LI Weiping， HUANG Xiancong， LIU Qiang， LIU Xiaolin， MA Tian. Bullet-proof Performance and Mechanism of New Ultra-high Molecular Weight Polyethylene Film[J]. Acta Armamentarii, 2021, 42(11): 2453-2464.

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