Vibration welding of thermoplastics. Part IV: Strengths of poly(butylene terephthalate), polyetherimide, and modified polyphenylene oxide butt welds
Vibration welding of thermoplastics. Part IV: Strengths of poly(butylene terephthalate), polyetherimide, and modified polyphenylene oxide butt welds
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热塑性塑料的振动焊接。
DOI：
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发表时间：
1988
期刊：
影响因子：
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通讯作者：
V. K. Stokes
中科院分区：
文献类型：
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作者：
V. K. Stokes
在热塑性塑料的振动焊接中，通过在压力下沿着两个部件的公共界面振动所完成的摩擦功来产生热量以实现焊接。主要工艺参数是焊接频率、振动运动幅度、焊接压力、焊接时间或焊接熔深。首先系统地研究了这些参数对焊缝质量的影响，首先在受控条件下，在各种工艺参数下对接焊热塑性样品，然后通过拉伸试验确定这些焊缝的强度和延展性。研究的三种热塑性塑料是聚对苯二甲酸丁二醇酯、聚醚酰亚胺和改性聚苯醚。研究表明，焊接压力的变化对聚醚酰亚胺和改性聚苯醚焊缝的强度具有相反的影响；此外，焊接频率对聚醚酰亚胺的可焊性有显着影响。将这三种热塑性塑料的可焊性数据与聚碳酸酯的数据进行比较。在适当的条件下，这些材料的对接焊缝强度与原始聚合物的强度相同。
In vibration welding of thermoplastics, frictional work done by vibrating two parts under pressure, along their common interface, is used to generate heat to effect a weld. The main process parameters are the weld frequency, the amplitude of the vibratory motion, the weld pressure, and the weld time or weld penetration.; The effects of these parameters on weld quality were systematically studied by first butt welding thermoplastic specimens under controlled conditions, over a wide range of process parameters, and by then determining the strengths and ductilities of these welds by tensile tests. The three thermoplastics investigated are poly (butylene terephthalate), polyetherimide, and modified polyphenylene oxide. Changes in the weld pressure are shown to have opposite effects on the strengths of polyetherimide and modified polyphenylene oxide welds; Also, the weld frequency is shown to have a significant effect on the weldability of polyetherimide. The weldability data for these three thermoplastics are compared with data for polycarbonate. Under the right conditions, the strengths of butt welds in these materials are shown to equal the strength of the virgin polymer.