Vibration welding of polypropylene-based nanocomposites – The crucial stage for the weld quality
Vibration welding of polypropylene-based nanocomposites – The crucial stage for the weld quality
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DOI：
10.1016/j.compositesb.2014.08.052
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发表时间：
2015
影响因子：
13.1
通讯作者：
Leyu Lin;A. Schlarb
中科院分区：
文献类型：
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作者：
Leyu Lin;A. Schlarb
用于振动焊接的热塑性纳米复合材料在双螺杆挤出机上通过稀释含有14体积%填料的浓缩母料来配混。采用线性振动焊接机在不同的焊接压力下进行对接焊接。通过快速减速技术，该机器能够实现约40 ms的极短减振时间。研究了不同阻尼时间对不同材料焊接强度的影响。实验结果也与模拟结果进行了比较。在纳米二氧化硅填充聚丙烯的情况下，没有检测到阻尼时间对焊接质量的影响，并解释了这种观察的可能原因。
Thermoplastic nanocomposites used for vibration welding are compounded on a twin-screw extruder by dilution of a concentrate masterbatch containing 14 vol% of filler. They are butt welded under different weld pressures by a linear vibration welding machine. By means of a quick ramp-down technology, this machine enables a very short vibration damping time of about 40 ms. The influence of different damping time on the weld strength of various materials is investigated. The experimental results are compared also with the results of simulation. In the case of nano-silica filled polypropylene, no impact of the damping time on the weld quality is detected and the possible reasons for this observation are explained.