基于PLC控制的聚苯硫醚/炭纤维复合材料的连接与性能研究  

Study on connection and properties of polyphenylene sulfide/carbon fiber composites based on PLC control

作　　者：罗思思[1] 李实[2] Luo Si-si;Li Shi(Beihai Vocational College,Guangxi Beihai 536000,China;Guangxi University of Science and Technology,Liuzhou 545006,China)

机构地区：[1]北海职业学院,广西北海536000 [2]广西科技大学,广西柳州545006

出　　处：《炭素技术》2021年第3期36-40,共5页Carbon Techniques

摘　　要：采用PLC控制焊接工艺参数,研究了焊接温度、焊接压力、冷却速率、搭接方式和搭接长度对聚苯硫醚/炭纤维层合板焊接接头剪切强度的影响,并对宏微观剪切断口进行了观察。结果表明,随着焊接温度、焊接压力和冷却速率的升高,聚苯硫醚/炭纤维复合板剪切强度都呈现先升高而后减小的特征,在焊接温度为390℃、焊接压力为0.6 MPa、冷却速率为20℃/min时取得最大值;采用双搭接方式更有利于提升聚苯硫醚/炭纤维复合板的剪切强度,相较于单搭接复合板的剪切强度提升幅度约为12.16%;随着搭接长度的增大,聚苯硫醚/炭纤维复合板剪切强度呈现先升高而后减小的特征,在搭接长度为90 mm时取得最大值。The effects of welding temperature, welding pressure, cooling rate, lapping mode and lapping length on the shear strength of polyphenylene sulfide/carbon fiber laminates were studied, and the macro and micro shear fracture surfaces were observed. The results show that with the increase of welding temperature, welding pressure and cooling rate, the shear strength of PPS/CFRP increases at first and then decreases. The maximum value is obtained at welding temperature of 390 ℃, welding pressure of 0.6 MPa and cooling rate of 20 ℃/min. Double lapping is more conducive to improve the shear strength of PPS/CFRP. The shear strength of PPS/CFRP composite plate increases by 12.16% compared with that of single overlap composite plate. With the increase of overlap length, the shear strength of PPS/CFRP composite plate increases first and then decreases, and the maximum value is obtained when the overlap length is 90 mm.

关 键 词：PLC控制 聚苯硫醚/炭纤维 焊接工艺 力学性能 

分 类 号：TB332[一般工业技术—材料科学与工程] TG453.9[金属学及工艺—焊接]