微晶石墨增强羧基丁腈橡胶复合材料的制备与表征  

Preparation and characterization of microcrystalline graphite-enhanced pyridine rubber composite materials

作　　者：陈惠[1] 任翔宇 林祥宝 陈代雄[2] 胡波[2] 刘洪波[1] CHEN Hui;REN Xiang-yu;LIN Xiang-bao;CHEN Dai-xiong;HU Bo;LIU Hong-bo(Hunan University School of Materials Science and Engineering,Changsha 410082,China;Hunan Nonferrous Metals Research Institute,Changsha 410000,China)

机构地区：[1]湖南大学材料科学与工程学院,长沙410082 [2]湖南有色金属研究院,长沙410000

出　　处：《炭素》2020年第4期5-10,共6页Carbon

基　　金：国家重点研发计划(2017YFB0310905);湖南省战略新兴产业(2018GK4012);湖南重大专项(2018GK1030)。

摘　　要：微晶石墨作为一种传统的无机填料,已经广泛地应用于各种基体材料中,以达到增强基体各方面性能的效果。本文对微晶石墨进行了不同时间的球磨处理,制备了不同粒径的石墨颗粒,将微晶石墨添加到羧基丁腈橡胶生胶(XNBR)中制备成复合材料。考察了微晶石墨粒径与添加量对复合材料性能的影响。随着石墨添加量的不断增加,橡胶复合材料的拉伸强度先增后减,当添加30 wt%的石墨时复合材料的拉伸强度达到峰值11.1 MPa,比空白样品提高了37.0%;随着石墨粒径的减小,复合材料的拉伸性能提升,在添加球磨24 h的微晶石墨的时候,复合材料的拉伸强度达到最大值11.9 MPa,相比空白样品提升了42.1%;微晶石墨/XNBR复合材料的热重分析表明,加入石墨后,相较于纯橡胶,复合材料的分解温度均有所提高,热稳定性不同程度的提高。Microcrystalline graphite,as a traditional inorganic filler,has been widely used in various matrix material,in order to enhance the performance of all aspects of matrix material.In this work,the microcrystalline graphite is processed at different times,the graphite particles of different particle sizes are prepared,and the microcrystalline graphite is added to the carboxyl nitrile rubber raw rubber(XNBR)to be prepared into composite materials.The effect of micrograin graphite particle size and addition on composite material performance was investigated.With the increase of microcrystalline graphite added amount,the tensile strength of rubber composite materials increases firstly and then decreases,reaching a peak of 11.1 MPa when adding 30 wt%graphite,which is 37.0%higher than the blank sample,and with the decrease of graphite particle size,the tensile performance of the composite material is improved when adding 24 h microcrystalline graphite.The tensile strength of the composite material reached a maximum of 11.9 MPa,which was 42.1%higher than the blank sample,and the thermal weight analysis of the microcrystalline graphite/XNBR composite showed that after adding graphite,the decomposition temperature of the composite material was improved and the thermal stability of the composite material was improved to different degrees.

关 键 词：微晶石墨 羧基丁腈橡胶 结构分析 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程]