摘要
以酚醛树脂 (phenol-formaldehyderesin ,PF)和碳化硼 (B4 C)为原料的高温粘结剂对炭材料具有良好的粘接性能。利用XPS手段 ,对不同温度热处理后的粘接部件的化学结构及其变化进行了分析。结果表明 ,酚醛树脂炭化为无定型碳 ,形成粘接胶层的骨架结构 ,并随着热处理温度的提高 ,有序化程度提高 ,从而提高了粘接界面的相容性。而B4 C与酚醛树脂炭化过程中释放出来的含氧小分子反应而氧化生成了B2 O3 。B2 O3 的形成 。
The high temperature adhesive composed of phenol-formaldehyde resin (PF) and boron carbide (B 4C) has satisfied bonding performances for carbon materials. In this research, the structures of bonded graphite components treated at different temperatures were characterized by XPS. The results showed that PF resin converted into amorphous carbon and worked as the framework of the cement, and the compatibility between the cement and the graphite matrix was promoted due to the increasing of ordered level of the carbon framework along with the increasing of heat-treatment temperatures; in addition, B 2O 3 was produced from the oxidization reaction between B 4C and oxygen-containing volatiles that volatilized from the carbonization of PF resin, the formation of B 2O 3 ensured the introduction of chemical bonding force between the adhesive cement and the graphite surface, and realized a high performance bonding after being treated at high temperatures.
出处
《兵器材料科学与工程》
CAS
CSCD
2002年第5期29-33,共5页
Ordnance Material Science and Engineering
