固化温度对酚醛树脂浸渍石墨性能的影响  

Effect of curing temperature on the properties of phenolic resin impregnated graphite

作　　者：郝立通 田蒙奎[1] 蒋凤易 杨颖 罗祥丽 

机构地区：[1]贵州大学化学与化工学院,贵州贵阳550025 [2]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》2017年第3期24-28,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项目[黔科合人才团队(2015)4004号];贵州省人社厅归国留学人员项目[黔人项目资助合同(2013)06号];贵阳国家高新区高层次人才创新创业项目

摘　　要：以热固性酚醛树脂为浸渍剂,在0.7 MPa下对普通中密石墨样品进行加压浸渍,并在130,150,180,200℃下分别进行固化,每个固化温度下进行3次浸渍固化操作;对浸渍石墨进行了孔隙率、增重率、抗压强度以及热重等表征分析。结果表明,在130℃下固化的浸渍石墨增重率高,孔隙率低,抗压强度低,耐高温性能差;在200℃下固化的浸渍石墨孔隙率高,抗压强度较高,质量稳定,耐高温性能好。In this experiment, the general medium-density graphite was impregnated by thermosetting phenolic resin under the pressure of 0.7 MPa. The graphite samples were impregnated and cured for three times under the temperature 130,150,180,and 200℃, respectively. Subsequent tests of porosity, weight gain, compressive strength and thermal gravimetric analysis for the impregnated graphite were carried out. The results show that the impregnated graphite cured at 130℃ has high weight gain rate, low porosity, but low compressive strength, and poor performance in high temperature environment. The impregnated graphite cured at 200℃ has low weight gain rate, high porosity, but high compressive strength, high performance in high temperature, and stable quality.

关 键 词：浸渍石墨 酚醛树脂 固化温度 

分 类 号：TQ165[化学工程—高温制品工业] O632.72[理学—高分子化学]