摘要
在厌氧胶中添加了N,N’-4,4’-二苯甲烷双马来酰亚胺(BDM)和苯乙炔苯酐封端的聚酰亚胺(PBDB-I),测试了热强度、高温老化强度和热失重,考察了BDM和PBDB-I对厌氧胶的高温力学性能的影响,并借助FT-IR、DSC和SEM分析了耐高温树脂对厌氧胶耐热改性的机理。BDM与厌氧胶单体具有较好的热反应协同性,而PBDB-I与厌氧胶单体的热反应协同性较差,但将BDM与PBDB-I相结合作为耐热树脂可使耐热性大大提高,厌氧胶耐300℃老化的时间可超过60h。
The hot strength, heat aging strength and TG of high-temperature resistant anaerobic adhesive containing BDM and PBDB-I were examined. The effect of BDM and PBDB-I on the high temperature mechanical property were investigated. FT-IR, DSC and SEM were used to analyze the modification mechanism. BDM had better thermal reaction synchronism with anaerobic adhesive monomer than that of PBDB-I. The combination of BDM and PBDB-I could greatly improve the high-temperature resistance of anaerobic adhesive. The aging time at 300℃ of the anaerobic adhesive could be more than 60h.
出处
《化学与粘合》
CAS
2009年第6期10-13,22,共5页
Chemistry and Adhesion
关键词
厌氧胶
耐热树脂
耐热改性机理
热老化
Anaerobic adhesive
heat-resistant resin
heat-resistant modification mechanism
heat aging
