中国塑料 ›› 2017, Vol. 31 ›› Issue (8): 68-72 .DOI: 10.19491/j.issn.1001-9278.2017.08.012

• 加工与应用 • 上一篇    下一篇

石墨烯模具改善注塑制品表面“浮纤”缺陷的实验研究

何泽鸿1,谢鹏程2,郁文霞3,杨卫民2   

  1. 1. 北京化工大学机电工程学院2. 北京化工大学英蓝实验室3. 北京化工大学
  • 收稿日期:2017-03-17 修回日期:2017-05-11 出版日期:2017-08-26 发布日期:2017-09-26

Study on Prevention of Fiber-floating Phenomenon on Injection-molded PP Parts with Graphite-assisted Rapid Heat Cycle Molding Technology

  • Received:2017-03-17 Revised:2017-05-11 Online:2017-08-26 Published:2017-09-26

摘要: 通过石墨烯辅助快速热循环技术研究了制品在成型过程中对模具型腔温度的控制。结果表明,提高模具型腔表面温度可降低模具表面与熔体温度差,减弱热交换,可使熔体能够保持较高的流动性,防止熔体充填时玻纤遇冷在表面淤积,从而有效改善聚丙烯表面“浮纤”状况;当模具型腔温度为120 ℃时,可完全消除制件表面的“浮纤”缺陷。

关键词: 聚丙烯, 浮纤, 石墨烯, 快速热循环, 玻璃纤维, 增强PP

Abstract: A temperature control for mold cavities was realized during injection-molding process by a graphene-assisted rapid heat cycle molding technology, and an intensive investigation indicated that the improvement of the surface temperature of mold cavities could reduce the temperature difference between mold surface and melt, and also resulted in a decrease in heat exchange. This made the melt have a low viscosity and prevented glass fiber depositing on mold surface when cooled. In this case, the glass fiber-floating phenomenon on the surface of injection-mold parts could be well prevented. Fiber-floating defects could be completely eliminated when temperature of the mold cavities was set to 120 ℃.

Key words: polypropylene, floating fiber, graphene, rapid heat cycle molding, glass fiber, reinforced