Improvement of Weld Line Strength in Injection Molded FRTP Articles

Improvement of Weld Line Strength in Injection Molded FRTP Articles
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提高 FRTP 注塑制品熔接线强度

DOI：
10.3139/217.880131
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发表时间：
1988
期刊：
影响因子：
--
通讯作者：
K. Tomari
K. Tomari
中科院分区：
--
文献类型：
--
作者：
H. Hamada;Z. Maekawa;T. Horino;K. Lee;K. Tomari

文献摘要

被引文献

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摘要纤维增强热塑性塑料(FRTP)注塑件产生的熔接痕质量差，导致机械强度降低。采用多腔模具，对纤维增强聚碳酸酯的熔合线强度进行了测定。在多腔结晶器中，强度提高是显著的。这是由于在保持阶段，纤维重新对准了材料的“回流”所引起的流动。结果表明，增加空洞对提高焊缝强度是有效的。
Abstract Weld lines generated in fiber reinforced thermoplastics (FRTP) injection molded parts are considered to be of poor quality and lead to reduction of the mechanical strength. A multi-cavity mold was used and the weld line strength were determined for fiber reinforced polycarbonate in this study. The strength increments are remarkable in the multi-cavity mold. This results from the re-alignment of fibers to the flow caused by “back flow” of the material during holding stage. It is suggested that an additional cavity is effective for improvement of strength of the weld line.