摘要
研究了辐射预热超声波焊接方法对碳纤维增强聚苯硫醚复合材料(Cf/PPS)的适用性,重点考察了预热温度和焊接压力对连接界面成形及接头力学性能的影响.结果表明,升高预热温度可促进接头界面树脂的熔合,当预热温度大于110℃时,熔合率可达百分之百;当焊接压力增大时,接头的连接面积逐渐增加,但其拉剪强度呈现先上升后减少的趋势.当预热温度为110℃,焊接压力为0.3 MPa时,接头成形最佳,强度达到最高的20 MPa.
The feasibility of ultrasonic welding process on carbon fiber reinforced polyphenylene sulfide(C f/PPS) composites with thermal radiant preheating was investigated.The effect of preheating temperature and welding pressure on the formation of bonding interface and the mechanical strength of welded joint was focused on.It was shown that increasing preheating temperature improved the fusion of the resin at the bonding interface and 100% of bonding area was achieved with a preheating temperature of 110 ℃.The bonding area increased with the welding pressure and it reached 100% when the welding pressure exceeded 3bars.The strength of the welded joint was enhanced with the welding pressure,but it declined at a welding pressure beyond 3bars.The welded joint had a maximum strength of 20 MPa at a preheating temperature of 110 ℃ with a welding pressure of 3 bar.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2017年第3期121-124,共4页
Transactions of The China Welding Institution
