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.
出处
《炭素技术》
北大核心
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
关键词
浸渍石墨
酚醛树脂
固化温度
Impregnated graphite
phenolic resin
curing temperature
