碳纳米管改性氟橡胶的性能研究  

Study on performance of carbon nanotube⁃modified fluoroelastomers

作　　者：李越[1] 程文佳[1] 刘明泰 尤黎明 徐凤祥[1] 李光大 史学涛[2] LI Yue;CHENG Wenjia;LIU Mingtai;YOU Liming;XU Fengxiang;LI Guangda;SHI Xuetao(China Oilfield Services Ltd Tianjin Branch,Tianjin 300459,China;School of Chemistry and Chemical Engineering,Xi’an 710072,China)

机构地区：[1]中海油田服务股份有限公司天津分公司,天津300459 [2]西北工业大学化学与化工学院,西安710072

出　　处：《中国塑料》2023年第3期7-12,共6页China Plastics

基　　金：中国海洋石油集团有限公司“关键核心技术攻关”项目“超高温高压油气田完井工具研究及产业化”(CN00C-KJ GJHXJSGG YF 2020-01)。

摘　　要：开展了碳纳米管材料对氟橡胶复合材料的改性研究,探究碳纳米管含量对氟橡胶复合体系物理性能、热性能、微观结构形貌、透气性以及宏观力学性能的影响。在此基础上模拟高温高压条件进行老化试验,对老化试验前后材料的硬度变化、体积变化、拉伸性能、撕裂性能和压缩永久变形量进行了测量与分析。结果表明,拉伸强度和撕裂强度随碳管含量增加表现增加的规律,基于脆断表面和热失重断面证实了本文实现了高含量碳纳米管的均匀分散,并且一维纳米材料构筑的碳纳米管网络结构有助于氟橡胶复合材料气体阻隔性能提升;基于老化前后的性能对比数据,表明碳纳米管的存在有助于老化后氟橡胶宏观性能的保持。In this paper,fluoroelastomer⁃based composites were modified with carbon nanotubes,and the effects of car⁃bon nanotube content on the physical properties,thermal properties,microstructure morphology,air permeability,and macroscopic mechanical properties of the modified fluoroelastomer composites were investigated.Aging experiments were conducted for the composites under simulated high⁃temperature and high⁃pressure conditions,and their hardness changes,the volume changes,tensile properties,tearing properties and compressive permanent deformation were evalu⁃ated and analyzed before and after the aging experiments.The results indicated that the modified fluoroelastomer compos⁃ites presented an increase in tensile strength and tear strength with increasing the carbon tube content.Based on the obser⁃vation for the brittle fracture surface and thermal weight loss section,a uniform dispersion of carbon nanotubes was con⁃firmed at their high contents.A network structure was constructed in the composites by carbon nanotubes as a one⁃dimen⁃sional nanomaterial,which contributed to the gas barrier performance of the composites.According to a comparison be⁃tween the performance data before and after experiments,the introduction of carbon nanotubes maintained the compre⁃hensive properties of the fluoroelastomer composites after the aging experiments.

关 键 词：碳纳米管 氟橡胶 热稳定性 微观形貌 老化 

分 类 号：TQ323.4[化学工程—合成树脂塑料工业]