Study of effects of plasticization parameter on fiber fracture behavior and melt floe-ability of ultra-long glass fiber reinforced polypropylene composites injection molding

Kai Fu Liew, Hsin Shu Peng, Sheng Jye Hwang, Chao Tsai Huang, Po Wei Huang, Kuei Shan Chen

研究成果: Conference contribution

摘要

This study explored the fiber fracture length, fiber orientation, and melt flow-ability variations of long glass fiber composite materials under different plasticization parameter s. Polypropylene was selected as the molding material, and glass fibers with a length of 25 mm were selected for composite reinforcement. Using an ultra-long-fiber composite injection molding machine (with a three-stage plunger mechanism), injection molding experiments were conducted at different screw speeds and under back-pressures to explore fiber fracture variations. Fiber fractures during plasticization were also observed to provide a reference for setting parameters. Moreover, flow-length specimen molds with different gate designs and specimen thicknesses were designed to facilitate observation of the effect of plasticizing properties on the flow-ability of long glass fiber composite materials. The experimental results revealed that fiber length decreased as screw speed increased. Under the parameter of low screw speed and without back-pressure, 60% of the fiber length was retained. Under the parameter of high screw speed and back-pressure, fibers fractured and the fiber length was shorter than 10 mm. In addition, during the filling process of fiber-containing plastic material, the thickness of the product and the gate design affected the filling process. The thin-wall of the mold-cavity product increased the flow resistance and affected the flow-ability and fiber distribution of long glass fiber composite materials.

原文English
主出版物標題SPE ANTEC 2020
主出版物子標題The Annual Technical Conference for Plastic Professionals
發行者Society of Plastics Engineers
頁面768-775
頁數8
ISBN(電子)9781713821182
出版狀態Published - 2020
事件SPE ANTEC 2020: Annual Technical Conference for Plastic Professionals - Virtual, Online
持續時間: 2020 三月 302020 五月 5

出版系列

名字Annual Technical Conference - ANTEC, Conference Proceedings
2

Conference

ConferenceSPE ANTEC 2020: Annual Technical Conference for Plastic Professionals
城市Virtual, Online
期間20-03-3020-05-05

All Science Journal Classification (ASJC) codes

  • 化學工程 (全部)
  • 聚合物和塑料

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