采用不同分子量聚乙烯吡咯烷酮(PVP)对碳晶进行修饰,并将修饰好的碳晶与水性环氧树脂制备成环氧树脂电热膜。分别采用扫描电镜、红外光谱和接触角等技术对制得的碳晶进行分析表征,并对制得的电热膜进行体积电阻率测试。结果表明:PVP通过氢键吸附于碳晶表面,会对碳晶的分散性与分散稳定性有提高的作用,且PVP的分子量不同,对分散性的影响也不同,PVPK30修饰的碳晶分散性及分散稳定性最佳;PVP修饰的碳晶电热膜比未经PVP修饰的碳晶电热膜的电学性能明显提高,与未经PVP修饰的碳晶电热膜对比,经由PVPK30修饰的碳晶电热膜的电阻率降低了95%,电导率提高了31倍。
Carbon crystal was modified by polyvinylpyrrolidone (PVP) with different molecular weight,and the modified carbon crystal and waterborne epoxy (WBE) resin were used to prepare BE electrothermal film.The carbon crystal was characterized by SEM,FT-IR and contact angle,and the volume resistivity of the electrothermal film was measured.The results showN that PVP adsorbed on the surface of carbon crystal through hydrogen bond can improve the dispersion and dispersion stability of carbon crystal,and the different molecular weight of PVP had different effects on the dispersion,PVPK 30 modified carbon crystal had the best dispersion and dispersion stability.The electrical properties of PVP modified carbon crystal electric heating film were significantly better than those of non PVP modified carbon crystal electric heating film,which was similar to those of non PVP modified carbon crystal electric heating film Compared with the carbon crystal electric heating film,the resistivity of the carbon crystal electric heating film modified by PVPK 30 was reduced by 95%,and the conductivity was increased by 31 times.
[1] 葛铁军,赵越,毛洪雨.碳晶柔性电热膜的制备与性能研究[J].塑料科技,2019,47(6):12-17.
[2] 赵越.碳晶场发射电热材料的制备和性能研究[D].沈阳:沈阳化工大学,2019.
[3] Lin S,Blankschtein D.Role of the bile salt surfactant sodium cholate in enhancing the aqueous dispersion stability of single-walled carbon nanotubes:a molecular dynamics simulation study[J].Journal of Physical Chemistry B,2010,114(47):15616-15625.
[4] Plisko T V,Bildyukevich A V.Debundling of multiwalled carbon nanotubes in N,N-dimethy-lacetamide by polymers[J].Colloid & Polymer Science,2014,292(10):2571-2580.
[5] 景希玮,公维光,冯中军,等.梳型聚合物超分散剂的合成及其在有机介质中分散CaCO3的研究[J].华东理工大学学报(自然科学版),2017,43(6):777-783.
[6] 蔡大安,陈鹏.ARGET-ATRP合成聚丙烯酸酯嵌段聚合物分散剂及其对炭黑分散性的影响[J].上海涂料,2017,55(5):21-24.
[7] 杜雪岩,刘广菊,杨洪奎,等.PVP对FePt纳米颗粒磁性能的影响[J].稀有金属材料与工程,2013,42(5):1009-1012.
[8] Rastogi R,Kaushal R,Tripathi S K,et al.Comparative study of carbon nanotube disper-sion using surfactants[J].Journal of Colloid and Interface Science,2008,328(2):421-428.
[9] Liu D,Lin L,Ren S,et al.Effect of polyvi-nyl pyrrolidone (PVP) molecular weights on dis-persion of sub-micron nickel particles by chem-ical reduction process[J].Journal of Materials Science,2016,51(6):3111-3117.
[10] Ntim S A,Sae-Khow O,Witzmann F A,et al.Effects of polymer wrapping and covalent functionalization on the stability of MWCNT in aqueous dispersions[J].Journal of Colloid and Interface Science,2011,355(2):383-388.
[11] 王帆.石墨烯功能化修饰及其电化学应用[D].湘潭:湘潭大学,2013.
[12] 王闻宇,刘亚敏,金欣,等.聚吡咯修饰碳纤维/环氧树脂复合材料的界面剪切强度[J].材料研究学报,2018,32(3):209-215.
[13] 尚旭,景希玮,徐健,等.不同分子量聚乙烯吡咯烷酮对多壁碳纳米管分散性能的影响[J].华东理工大学学报(自然科学版),2019,45(6):883-890.
[14] 陈彦青,刘昌华,陈建光,等.魔芋葡甘聚糖/聚乙烯吡咯烷酮水凝胶的制备及缓释性能研究[J].宜宾学院学报,2008,8(6):72-75.
[15] 宋承松,易彦巧,姚承才.苯甲酸的红外吸收光谱分析[J].佳木斯职业学院学报,2016(5):279.
[16] 石继红,高峰,张宇东.非金属电热膜材料及工艺分析[J].沈阳航空工业学院学报,1996(2):51-55.
基金资助
辽宁省重点研发计划项目(2017304004)
PDF
