The effect of GF/PP matrix interfacial properties on the weldline strength in short glass fiber reinforced polypropylene
作者:
Shintaro Kikuchi,
Yuji Pujita,
Kazunori Sano,
Hirokazu Inoguchi,
Masao Hiragushi,
Hiroyuki Hamada,
期刊:
Composite Interfaces
(Taylor Available online 1996)
卷期:
Volume 4,
issue 6
页码: 367-378
年代: 1996
DOI:10.1163/156855497X00217
出版商: Taylor & Francis Group
关键词: Short glass fiber;polypropylene;weldline;interfacial properties
数据来源: Taylor
摘要:
The strength of GF/PP injection molded parts is reduced by the existence of a weldline. In this paper, the effect of molecular weight of matrix PP, GF content, GF surface treatment, GF shape (diameter and chopped strand length), MAH-PP content and interfacial properties on the weldline strength in GF/PP has been studied. Since the fibers orient vertically to the flow direction, effective reinforcement cannot be obtained at the weldline. Such fiber direction at the weldline cannot be controlled by the molecular weight of matrix, GF content and GF shapes. On the other hand, strength of the weld specimens increases when the amount of silane coupling agents and the MAH-PP content increase. Therefore, it is suggested that the weldline strength is affected by the strength of interfacial adhesion between GF and matrix.
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