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Plastic Deformation Modes of Rigid PU/ER Interpenetrating Polymer Networks Foams Under Static Loading
Author(s): 
Pages: 26-32
Year: Issue:  4
Journal: Journal of Materials Engineering

Keyword:  polyurethane/epoxy resin interpenetrating polymer networkrigid foamcompression propertyplastic deformation;
Abstract: 采用同步法合成聚氨酯/环氧树脂互穿网络硬泡,通过FTIR和SEM研究其化学结构及微观结构形态,为研究其压缩响应及变形模式,对其进行静态压缩试验.结果表明:IPN硬泡的压缩行为表现出各向异性.平行发泡方向的压缩应力-应变曲线表现出三个变形阶段,其中平台阶段的显著特征是应变软化和局部变形.垂直发泡方向的压缩曲线则单调增加,平台阶段没有产生应变软化,整个压缩过程中试样变形均匀分布.IPN硬泡的静态压缩存...
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