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| 火焰复合层对化学交联聚乙烯发泡材料力学性能的影响 |
| On the Effect of Flame Lamination Layers on Mechanical properties of Chemical XPE Foam |
| Received:November 09, 2016 Revised:March 03, 2017 |
| DOI：10.7520/1001-4888-16-240 |
| 中文关键词: XPE发泡材料 火焰复合层 加载-卸载试验 应力-应变曲线 弹塑性行为 |
| 英文关键词:cross-linked polyethylene foam(XPE foam) flame lamination layer loading and unloading experiment stress-strain curve elasto-plastic behavior |
| 基金项目:国家自然科学基金资助项目(11402053)，江苏省自然科学青年基金项目(BK20140618)及中央高校基本科研业务费专项资金资助 |
| Author Name | Affiliation | | ZHANG Bo-qin | School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China | | MENG Ji-xing* | 1.School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China
2.Jiangsu Key Laboratory of Engineering Mechanics, Department of Engineering Mechanics, Southeast University, Nanjing 210096, Jiangsu, China
3.National Sports Engineering Technology Research Center, Taishan Sports Industry Company, Dezhou 253600, Shandong, China | | ZHANG Jun-ping | School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China | | LONG Guo-rong | National Sports Engineering Technology Research Center, Taishan Sports Industry Company, Dezhou 253600, Shandong, China | | XU Ming | 1.School of Civil Engineering, Southeast University, Nanjing 210096, Jiangsu, China
2.Jiangsu Key Laboratory of Engineering Mechanics, Department of Engineering Mechanics, Southeast University, Nanjing 210096, Jiangsu, China |
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| 中文摘要: |
| 化学交联聚乙烯发泡材料(Cross-linked polyethylene, XPE)具有优异的物理、化学与力学性能，被广泛应用于工业领域。本文通过对不同层数的XPE发泡材料进行加载-卸载试验与压缩循环试验，得到不同层数XPE发泡材料的应力-应变曲线，获得了弹性区与平台区分界点的应力与应变、平台区与强化区应力的数量关系。通过计算得出应力-应变环的面积，发现其能量耗散能力随加载次数增加呈现下降趋势。结果表明，单层XPE发泡材料的弹性区与平台区弹性极限应变、临界应力强度和应力环面积等性质与多层材料相比差别显著，而多层材料间力学性能的差异微小。这些特征表明，火焰复合层自身具有较大的刚度并对发泡材料孔壁有较强的约束，改善了XPE发泡材料的刚度、弹性模量及耗能能力等。 |
| 英文摘要: |
| Cross-linked polyethylene (XPE) foam has excellent physical, chemical and mechanical properties, and has been widely used in industrial fields. Through loading-unloading experiment and compression cyclic experiment for XPE foam with different layers, its stress-strain curve, stress and strain at elastic region and platform separation boundary point and quantitative relationship between stress in platform and strengthening zone were obtained, respectively. By calculating, the area of stress-strain ring was obtained, it reveals that the energy dissipation capacity presents a downward trend with the increase of loading times. Results show that by comparing with XPE foam with multiple layers, the single layer XPE foam presents significant differences in following aspects: elastic zone and platform area elastic ultimate strain, the critical stress intensity and stress ring area and other properties. However, the mechanical properties of multiple layers material are very small. These characteristics indicate that flame lamination layer has large stiffness and has strong constraint on the hole wall of foamed material are improves the stiffness, modulus of elasticity and energy dissipation capacity of XPE foam material. |
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