PDF (3193K)
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,利用动态热机械分析仪和热重分析仪测试了PMMA/MWCNT复合材料的动态力学性能和热稳定性。结果表明:在玻璃态时,随着MWCNT含量的增加,复合材料的储能模量(E′)和损耗因子(tanδ)均呈先增加后减小的趋势,含量为1%时达到最大值,而损耗模量(E″)较纯PMMA呈下降趋势。在玻璃化转变区域,E′、tanδ和E″较PMMA均有提高。在橡胶态时,随着MWCNT含量的增加,E′和E″变化不显著,tanδ逐渐升高。热失重数据显示,随MWCNT含量增加,PMMA/MWCNT复合材料的初始降解温度在3%达到最大,比纯PMMA提高了76.5℃。
Abstract
The composites based on poly(methyl methacrylate)and multi-walled carbon nanotubes (PMMA/MWCNT) were prepared by a solution-blending method,the dynamic mechanical properties and thermal stability of PMMA/MWCNT were tested by dynamic mechanical analyzer and thermal weight analyzer.The results indicated when the composites were in the glass state,the energy storage modulus(E′) and the loss factor(tanδ) increased first and then decreased with the increase of MWCNT content,and reached the maximum when the content was 1%,the loss modulus(E″) decreased than that of pure PMMA.The E′,tanδ and E″ were all improved compared to PMMA when the composites were in the glassy transition area.When the composites were in the rubber state,the tanδ gradually increased as the increase of MWCNT content,while the change of E′ and E″ were not significant.Thermal weightlessness data showed that with the increase of MWCNT content,the initial degradation temperature of the composites reached the maximum at 3%,which was 76.5℃ higher than that of pure PMMA.
关键词
聚甲基丙烯酸甲酯
/
多壁碳纳米管
/
复合材料
/
动态力学性能
/
热稳定性
Key words
poly(methyl methacrylate)
/
multi-walled carbon nanotube
/
composite
/
dynamic mechanical property
/
thermal stability
聚甲基丙烯酸甲酯/多壁碳纳米管复合材料的动态力学性能及热稳定性研究[J].
化工新型材料, 2020, 48(5): 141-144 DOI:
[1] 袁欣强.EVA/PMMA透明复合材料制备与性能研究[J].化工新型材料,2014,42(1):59-61.
[2] 张子健.PMMA树脂的力学性能及热稳定性研究[D].长春:长春工业大学,2012.
[3] Iijima S.Helical microtubes of graphiti ccarbon[J].Nature,1991,354:56-58.
[4] 焦迎春,沈同德,梁沁,等.碳纳米管增强聚甲基丙烯酸甲酯复合材料的研究进展[J].中国塑料,2012,26(10):16-23.
[5] 辜萍,王宇,李广海.碳纳米管的力学性能及碳纳米管复合材料研究[J].力学进展,2002,32(4):563-578.
[6] 林志丹,黄珍珍,麦堪成.改性纳米CaCO3/PP动态力学性能的研究[J].塑料,2003,32(4):6-10.
[7] Ciardelli F,Coiai S,Passaglia E.Nanocomposites based on polyolefins and functional thermoplastic materials[J].Polymer International,2008,57(6):805-836.
[8] 王琼生,王世铭,王诣婧.膨润土/聚甲基丙烯酸甲酯纳米复合材料的动态力学行为[J].福建师范大学学报,2008,24(3):54-58.
[9] 钱保功.高聚物的转变与松弛[M].北京:科学出版社,1986,41-455.
[10] Kissinger H E.Reaction kinetics in differential thermal analysis[J].Analytical Chemistry,1957,29(11):1702-1706.
[11] Joseph H F,Leo A W.A quick,direct method for the determination of activation ernergy from thermogravimetric data[J].Journal of Polymer Science Part C:Polymer Letters,1966,4(5):323-328.
[12] 曾文茹,李疏芬,周允基.聚甲基丙烯酸甲酯热氧化降解的化学动力学研究[J].化学物理学报,2003,16(1):64-68.
基金资助
衡水市科技计划项目(2016011006Z);衡水学院校级课题(2018LX21)
