Effects of Cell Structure on Properties of Silicone Rubber Foam Material
摘 要
使用不同形貌的成孔剂, 采用溶析成孔方法制备了开孔型硅橡胶泡沫材料, 研究了泡孔结构、孔径对开孔型硅橡胶泡沫材料性能的影响。结果表明: 在密度和基胶相同的情况下, 硅橡胶泡沫材料的应力松弛及力学性能主要受泡孔结构的影响; 硅橡胶泡沫材料的拉伸强度、硬度、抗压能力及压缩应力松弛性能均随着泡孔结构规整度的增加而增大; 球形泡孔结构硅橡胶泡沫材料具有较好的力学性能, 在一定孔径范围内泡孔孔径对其压缩应力松弛性能及硬度影响较小, 而拉伸强度随泡孔孔径的增大而减小。
Abstract
Opening structure silicone rubber foams were prepared by means of the dissolve-separating foaming technology using pore formers with different morphology. Effects of cellular structure and cell diameter on the properties of opening structure silicone rubber foams were studied. The results showed that the stress relaxation and mechanical properties were mainly affected by cellular structure when the density and the matrix rubber were the same. Tensile strength, hardness, compressive strength and stress relaxation properties of silicone rubber foams were increased with the growth of the regularity of cellular structure. Spherical cellular structure can come about better mechanical properties than others. When the cellular structure was spherical, compression stress relaxation and hardness of silicone rubber foams were less affected by cell diameter in a certain range, but tensile strength was increased when the cellular diameter reduced.
中图分类号 TQ33
所属栏目 试验研究
基金项目 中国工程物理研究院重大科技专项项目
收稿日期 2012/3/22
修改稿日期 2012/9/17
网络出版日期
作者单位点击查看
备注沙艳松(1986-), 男, 安徽五河人, 硕士研究生。
引用该论文: SHA Yan-song,ZHANG Chang-sheng,LI Jing-li,LUO Shi-kai. Effects of Cell Structure on Properties of Silicone Rubber Foam Material[J]. Materials for mechancial engineering, 2013, 37(2): 25~28
沙艳松,张长生,李静莉,罗世凯. 泡孔结构对硅橡胶泡沫材料性能的影响[J]. 机械工程材料, 2013, 37(2): 25~28
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参考文献
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【6】黄远红, 张方晓, 胡文军. 硅橡胶泡沫材料的应力松弛性能研究[J].化工新型材料, 2009, 37(8): 85-87.
【7】史安平, 符春渝, 牛伟, 等. 多孔硅橡胶泡沫衬垫应力松弛行为的数值模拟[J].机械工程材料, 2008, 32(3): 83-86.
【8】丁国芳, 贺传兰, 石耀刚, 等. 硅橡胶泡沫泡孔结构与压缩应力松弛性能的相关研究[J].化工新型材料, 2008, 36(6): 47-49.
【9】张长生, 石耀刚, 罗世凯, 等. 物理成孔剂在硅泡沫制备中的应用研究[J].化工新型材料, 2009, 37(11): 93-95.
【10】雷卫华, 赵祺. 过氧化物硫化EPDM发泡材料的研究[J].橡胶工业, 2002, 49(5): 275-277.
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【12】李敬明, 郭坤, 周红萍, 等. 泡沫硅橡胶拉伸压缩过程的扫描电镜原位观察[R].绵阳: 中国工程物理研究院, 2004.
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