摘要
在 B4C改性酚醛树脂 (phenol- form aldehyde resin,PF)高温粘接剂的基础上 ,向其中添加白炭黑 (超细Si O2 )制备新型粘接剂 ,并对石墨材料进行粘接和热处理 ,测试了不同温度热处理后的粘接强度。结果表明 ,2 5 5 0℃处理后新型粘接剂仍具有理想的耐热温度和粘接强度。利用扫描电镜 (SEM)对样品断面形貌进行观察 ,研究了粘接界面的组成和结构变化及其与粘接性能之间的关系。实验结果表明 ,白炭黑的添加 。
White carbon black particles were introduced into the formal adhesive consisting of phenol formaldehyde resin mixed with B 4C powders to prepare a novel high temperature adhesive Graphite materials were bonded with the adhesive and their shear strength after heat treatment at different temperatures were tested subsequently It was indicated that the novel adhesives possessed excellent heat resistivity and good adhesion to graphite with the temperature up to 2550℃ Photography of fractured sections of the bonded samples were observed by SEM The relationship between the composition, structure of the adhesives and the adhesive shear strength of the bonded samples was analyzed Results demonstrated that white carbon black′s introduction was helpful to improve the density and adhesion at the interface of the bonded samples
出处
《材料工程》
EI
CAS
CSCD
北大核心
2001年第9期14-17,共4页
Journal of Materials Engineering
关键词
白炭黑
B4C
酚醛树脂
高温粘接剂
石墨
碳化硼
改性
制备
white carbon black
boron carbide
phenol formaldehyde resin
high temperature adhesive
graphite
