聚甲基丙烯酸甲酯/多壁碳纳米管复合材料的力学性能研究
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摘要
采用溶液共混法制备了聚甲基丙烯酸甲酯/多壁碳纳米管(PMMA/MWCNT)复合材料,对其拉伸、冲击等力学性能进行了测试,并利用动态热机械分析仪测试了复合材料的动态力学性能。结果显示:随着MWCNT含量的增加,复合材料的拉伸强度和冲击强度呈现先增加后减小的趋势,在质量分数2%时达到最大值,比纯PMMA分别提高了63.6%和104%;当MWCNT质量分数为1%时,复合材料的储能模量出现最大值;温度低于玻璃化转变温度(约60℃)时,损耗模量低于纯PMMA,高于玻璃化转变温度时,损耗模量高于纯PMMA;损耗峰温度值(T_g)明显升高,由纯PMMA的59.2℃升高到67.9℃。
The composites based on poly(methyl methacrylate)and multi-walled carbon nanotubes(PMMA/MWCNT) were prepared by a solution-blending method,the mechanical properties such as tensile and impact were tested,and the dynamic mechanical properties of PMMA/MWCNT were tested by dynamic mechanical analyzer.The results showed that with the increase of MWCNT content,the tensile strength and impact strength of the composites increased first and then decreased,reaching a maximum of 2%,which increased by 63.6% and 104% respectively compared with pure PMMA.When the MWCNT content was 1%,the energy storage modulus of the composite has a maximum value and the storage modulus was higher than the pure PMMA which the temperature was lower than the glass transition temperature(about 60℃),and the loss modulus was higher than the pure PMMA which the temperature was higher than the glass transition temperature.The loss peak temperature(T_g) increased significantly from 59.2℃ of pure PMMA to 67.9℃.
The composites based on poly(methyl methacrylate)and multi-walled carbon nanotubes(PMMA/MWCNT) were prepared by a solution-blending method,the mechanical properties such as tensile and impact were tested,and the dynamic mechanical properties of PMMA/MWCNT were tested by dynamic mechanical analyzer.The results showed that with the increase of MWCNT content,the tensile strength and impact strength of the composites increased first and then decreased,reaching a maximum of 2%,which increased by 63.6% and 104% respectively compared with pure PMMA.When the MWCNT content was 1%,the energy storage modulus of the composite has a maximum value and the storage modulus was higher than the pure PMMA which the temperature was lower than the glass transition temperature(about 60℃),and the loss modulus was higher than the pure PMMA which the temperature was higher than the glass transition temperature.The loss peak temperature(T_g) increased significantly from 59.2℃ of pure PMMA to 67.9℃.
引文
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