研究物理老化对玻璃态高分子材料力学性能的影响.通过单轴拉伸和蠕变测试,分析了物理老化时间对PMMA瞬时弹性模量、断裂强度以及等时蠕变柔量的影响.结果表明,在文中讨论的老化时间范围内,初始瞬时弹性模量和断裂强度随对数老化时间的增大而线性递增,而等时蠕变柔量则与对数老化时间成线性递减关系.此外,不同应力下等时蠕变柔量的实验结果显示,提高应力起到了加速老化的作用.
参考文献
| [1] | Hodge IM .PHYSICAL AGING IN POLYMER GLASSES[J].Science,1995(5206):1945-1947. |
| [2] | Huu CH.;Vu-Khanh T. .Effects of physical aging on yielding kinetics of polycarbonate[J].Theoretical and Applied Fracture Mechanics,2003(1):75-83. |
| [3] | Ho CH;Vu-Khanh T .Physical aging and time-temperature behavior concerning fracture performance of polycarbonate[J].Theoretical and Applied Fracture Mechanics,2004(1/3):103-114. |
| [4] | Struik LCE. .ON THE REJUVENATION OF PHYSICALLY AGED POLYMERS BY MECHANICAL DEFORMATION[J].Polymer: The International Journal for the Science and Technology of Polymers,1997(16):4053-4057. |
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