Vibration welding of nano‐TiO2 filled polypropylene

Vibration welding of nano‐TiO2 filled polypropylene
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纳米TiO2填充聚丙烯的振动焊接

DOI:
10.1002/pen.23891
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发表时间:
2015
影响因子:
3.2
通讯作者:
Schlarb
Schlarb
中科院分区:
工程技术4区
文献类型:
--
作者:
Schlarb

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用双螺杆挤出机和注塑机将PP基纳米复合材料复合成平板,然后通过线性振动焊接将其连接起来。对焊缝和块体材料的力学性能进行了测试。虽然刚性粒子的加入略微提高了本体PP的冲击强度,但焊缝的力学性能随着纳米粒子含量的增加而下降。在不添加纳米颗粒的情况下,在较低的焊接压力下获得最佳的焊接质量。对焊缝断口和显微组织的分析表明,焊缝质量下降是由于纳米颗粒平行于焊缝平面取向,破坏了填料与母材之间的界面,以及纳米颗粒的加入导致熔膜厚度减小所致。波兰姆。英语。科学,55:243-250,2015。©2014塑料工程师学会
Polypropylene (PP)‐based nanocomposites compounded by a twin‐screw extruder and injection molded into plates those were then joined by linear vibration welding. The mechanical performances of the welds and bulk materials were examined. While the incorporation of rigid particles slightly improves the impact strength of the bulk PP, the mechanical properties of the welds decrease with increasing nanoparticle contents. The best weld quality is obtained at low weld pressure without nanoparticles. The fracture surfaces and microstructure of the welds showed that the reduced weld quality is caused by the orientation of nanofillers parallel to the weld plane, the destruction of interphase between fillers and matrix, and the reduction of molten‐film thickness by incorporation of nanoparticles. POLYM. ENG. SCI., 55:243–250, 2015. © 2014 Society of Plastics Engineers
对接焊振动焊缝的冲击强度与显微组织和焊接历史有关
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