浸渍固化次数对酚醛树脂浸渍石墨性能影响  

Effect of the times of impregnation and curing on the properties of graphite impregnated by phenolic resin

作　　者：王茵[1] 田兴强[1] 李敏[1] 蒋凤易 田蒙奎[2] 郝立通 邵珠花 杨颖 Wang Yin;Tian Xing-qiang;Li Min;Jiang Feng-yi;Tian Meng-kui;Hao Li-tong;Shao Zhu-hua;Yang Ying(Department of Mechanical and Electrical Engineering,Guizhou Jiaotong Vocational and Technical College,Guizhou Guiyang 550008,China;College of Chemistry and Chemical Engineering,Guizhou University,Guizhou Guiyang 550025,China;Guizhou lanxin graphite electrical equipment manufacturing co.,Ltd.,Guizhou Fuquan 550500,China)

机构地区：[1]贵州交通职业技术学院机电系,贵州贵阳550008 [2]贵州大学化学与化工学院,贵州贵阳550025 [3]贵州兰鑫石墨机电设备制造有限公司,贵州福泉550500

出　　处：《炭素技术》2018年第5期26-30,共5页Carbon Techniques

基　　金：贵州省石墨装备制造及应用科技创新人才团队(黔科合人才团队[2015]4004号);贵州省优秀青年科技人才计划项目资助(黔科合平台人才[2017]5605);贵阳国家高新区高层次人才创新创业项目资助

摘　　要：为探究不同浸渍固化次数对酚醛树脂浸渍石墨性能的影响,以热固性酚醛树脂为浸渍剂,在160℃、0.72 MPa条件下对普通中密石墨分别进行不同次数浸渍固化处理,并对浸渍固化后的石墨进行了偏光显微镜、密度、增重率、开孔气孔率、热重和抗压强度等表征分析,以比较不同浸渍固化次数下石墨的性能。结果表明:石墨的密度、增重率和抗压强度随着浸渍固化次数的增加而升高,开孔气孔率和耐高温性能则随浸渍固化次数的增加而降低。从缩短生产周期、降低生产成本和提高经济效益的角度出发,在满足石墨耐高温性能和抗压强度的使用条件下,只需对石墨进行3次浸渍固化处理;若对石墨的抗压强度有更高的要求,则需对石墨进行不少于4次的浸渍固化处理。In order to investigate the effect of the different impregnation curing times on the performance of phenolic resin impregnated graphite ,ordinary mid-density graphite was impregnated and cured for different times at 160 ℃ and 0.72 MPa with thermosetting phenolic resin as infiltrating agent.The characteristics of polarized light microscopy ,density ,weight gain, open porosity, thermo- gravimetric and compressive strength of the impregnated and cured graphites were measured.The results show that graphite density, weight gain rate and compressive strength increased with the increase of the number of impregnation curing,the porosity of open pores and the high temperature resistance decrease with the increase of impregnation time.From the view of shortening the production cycle ,reducing production cost and improving economic efficiency ,and meeting the demand of the high temperature performance and compressive strength of the use of conditions ,the graphite was only impregnated and cured for 3 times.

关 键 词：石墨 酚醛树脂 浸渍固化次数 

分 类 号：TQ127.11[化学工程—无机化工]