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关于耐热性论文范文资料 与MWCNTsPES—MBAE复合材料微观结构和耐热性有关论文参考文献

版权:原创标记原创 主题:耐热性范文 科目:职称论文 2024-03-17

《MWCNTsPES—MBAE复合材料微观结构和耐热性》:本文关于耐热性论文范文,可以做为相关论文参考文献,与写作提纲思路参考。

摘 要:以二烯丙基双酚A(BBA) 和双酚A双烯丙基醚(BBE)为活性稀释剂、以4,4’-二氨基二苯甲烷双马来酰亚胺(MBMI)为前驱体制备聚合物基体(MBAE),采用聚醚砜(PES)和酸化MWCNTs为改性剂,通过原位聚合法制备MWCNTs/PE BAE复合材料.采用TEM和FTIR分析酸化MWCNTs的改性效果,利用SEM观察材料的微观形貌及相结构.结果表明:经过混酸处理2h的MWCNTs,其表面被氧化,保持了较大的长径比,且在基体中分散均匀;FTIR显示在3448cm-1和1635cm-1处存在特征峰,推断其表面存在-COOH;另外,PES和MBAE间呈现两相结构并以“蜂窝”状均匀分散在聚合物基体中.复合材料的耐热性测试结果显示:PES树脂会使材料的热分解温度降低,但MWCNTs会提高材料的耐热性能.当PES质量分数为2%,MWCNTs质量分数为0.02%时,MWCNTs/PE BAE复合材料的热分解温度为453.7℃,较基体树脂提高15.4℃.

关键词:碳纳米管;聚醚砜;双马来酰亚胺;微观形貌;耐热性

DOI:10.15938/j.jhust.2018.01.008

中图分类号: TB332

文献标志码: A

文章编号: 1007-2683(2018)01-0041-05

Abstract:Polymer matrix (MBAE) was prepared by reactive diluent which contained diallyl bisphenol A (BBA) and bisphenolA diallyl ether (BBE) with 4,4’diamino diphenyl methane bismaleimide (MBMI). Polyether sulfone (PES) and acidMWCNTs as modifiers were used to prepare MWCNTs/PE BAE composite was through insitu polymerization method. AcidMWCNTs were analyzed by Transmission Electron Microscope(TEM) and Fourier transforminfrared spectroscopy(FTIR). Microstructure and phase structure of the composite were observed by Scanning Electron Microscope(SEM). The results showed that polar groups could be generated on the surface of MWCNTs with a large ratio of length to diameter in the system of mixed acid for 2 hours, and evenly dispersed in the composites. FTIR showed that the characteristic peaks were at 3448cm-1and 1635cm-1, to infer the existence of -COOH. PES presented as twophase structure in MBAE matrix, PES resins evenly dispersed in polymer matrix with “honeycomb” shape. Results of heat resistance of composites showed that the thermal decomposition temperature would decline when MBAE matrix mixed with PES, but acidMWCNTs can enhance the thermal stability of composite materials. When the content of PES was 2wt% and acidMWCNTs was 0.02wt%, the thermal decomposition temperature of MWCNTs/PE BAE was 453.73℃, which is 15.40℃ higher than that of matrix resin.

Keywords:carbon nanotubes; polyether sulfone; bismaleimide; microstructure; heatresistance

0引言

双马来酰亚胺树脂(BMI)作为一种优异的高性能树脂,具有良好的加工性能和尺寸稳定性,同时其耐高温、耐辐射、耐湿热、绝缘性好等优点使其广泛地应用于电气绝缘材料、耐高温浸渍漆以及航空航天等领域[1-4].然而未改性的BMI由于结构中含有酰亚胺环、苯环结构以及较高的结晶性导致树脂的脆性大,抗冲击性能和抗应力开裂的能力较差,这些缺点限制了其应用.聚醚砜树脂(PES)具有韧性好、模量高以及耐老化性优异等特点,采用其增韧BMI,可提高其韧性并改善加工性能,但PES的引入会使材料的耐热性能有所降低.多壁碳纳米管(MWCNTs)是一种由碳六边形组成的多层石墨片卷曲而成的无缝纳米管壳层结构[5-7],经过功能化、分散良好的MWCNTs和聚合物基体间粘结性能良好,能顺利地将外界载荷传递到MWCNTs上[8],在起到增韧BMI的作用的同时,也提高了材料的耐热性.

本文以雙烯丙基化合物(BBA,BBE)为活性稀释剂改性二苯甲烷型双马来酰亚胺(MBMI),原位聚合制备MBAE树脂基体,并以PES为增韧剂、酸化MWCNTs为改性剂,制备MWCNTs /PE BAE复合材料,研究其微观形貌和复合材料的耐热性.

耐热性论文参考资料:

性论文

综述性论文格式

性课题开题报告

综述性论文怎么写

综述性论文范例

性论文范文

结论:MWCNTsPES—MBAE复合材料微观结构和耐热性为适合耐热性论文写作的大学硕士及相关本科毕业论文,相关耐高温玻璃开题报告范文和学术职称论文参考文献下载。

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