聚合物矩阵复合面板的潜在冲击保护,使用聚氨涂层
Jide Williams1, Joseph Hoffman2, Paul Predecki2
1Walter Scott, Jr. College of Engineering, Scott, Bioengineering Building, Colorado State University, 700 Meridian Ave., Fort Collins, CO 80523, USA.
Polymers
|February 13, 2025
概括
聚尿素 (PU) 涂层显著增强聚合物矩阵复合材料 (PMC) 面板保护,防止高速弹道冲击. 这些涂层与增加的面板厚度相比,提供了优越的防御,降低了成本,质量和厚度,用于像大型功率变压器这样的应用.
科学领域:
- 材料科学 材料科学 材料科学
- 机械工程 机械工程
- 弹道学 弹道学 弹道学
背景情况:
- 聚合物矩阵复合材料 (PMC) 越来越多地用于结构应用.
- PMC的弹道性能,特别是大型功率变压器 (LPT) 坦克的弹道性能,需要进一步调查.
- 聚尿素 (PU) 涂层具有潜在的保护性益处,但它们对高速对PMC的影响的有效性尚未得到充分证实.
研究的目的:
- 为了数值地研究PMC面板的弹道性能,用聚尿素 (PU) 涂层.
- 评估PU涂层对高速射弹冲击的保护作用.
- 评估PU涂层作为PMC应用的潜在增强,例如LPT坦克.
主要方法:
- 使用有限元建模 (FEM) 来模拟弹道撞击.
- 分析了玻璃纤维/环氧和碳纤维/环氧复合板,无论是单独的还是混合配置的.
- 模拟冲击涉及400米/秒的钢弹弹.
主要成果:
- 发现PU涂层在防止弹子穿透方面效果比仅仅增加面板厚度高三倍.
- 在未涂层面板中分析了冲击损伤的演变和结深度,作为厚度的函数.
- 聚乙烯涂层降低了面板所需的成本,质量和厚度,同时保持了保护性完整性.
结论:
- 聚尿素 (PU) 涂层在弹道冲击下为聚合物矩阵复合材料 (PMC) 面板提供了显著的保护优势.
- 使用PU涂层是一种可行的策略,可以提高PMC的弹道抵抗力,并有可能取代更厚或更重的材料.
- 这项研究支持考虑PU涂层的PMC用于要求高抗冲击的应用,例如大型功率变压器 (LPT) 坦克.
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