Effects of stress and physical ageing on nonlinear creep behavior of poly(methyl methacrylate) |
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| Authors: | ZHAO Rong-guo CHEN Chao-zhong LI Qi-fu LUO Wen-bo |
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| Affiliation: | 1.Institute of Rheological Mechanics;Xiangtan University;Xiangtan 411105;China;2.Key Laboratory of Low Dimensional Materials and Application Technology of Ministry of Education;China |
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| Abstract: | The effects of stress,ageing time and ageing temperature on creep behavior of poly(methyl methacrylate) were studied.After annealing above its glass transition temperature for a period of time to eliminate the stress and thermal history,the specimens were quenched and aged at various ageing temperatures for different ageing time,and then the short-term creep tests under different stress levels were carried out at room temperature.The creep strains were modeled by means of time-ageing time equivalence and ti... |
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| Keywords: | creep time-stress equivalence time-ageing time equivalence physical ageing polymer |
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