中国塑料 ›› 2021, Vol. 35 ›› Issue (5): 11-16.DOI: 10.19491/j.issn.1001-9278.2021.05.003

• 材料与性能 • 上一篇    下一篇

成型工艺对短玻璃纤维增强聚丙烯注塑管件的壁厚分布及玻璃纤维取向的影响

钟罗浩1, 匡唐清1(), 赖家美2, 柳和生2, 赖德炜1   

  1. 1.华东交通大学机电与车辆工程学院,南昌 330013
    2.南昌大学机电工程学院,南昌 330031
  • 收稿日期:2021-01-20 出版日期:2021-05-26 发布日期:2021-05-24

Effect of Molding Process on Wall Residual Thickness Distribution and Glass⁃fiber Orientation of Short⁃glass⁃fiber⁃reinforced Polypropylene Molded Pipes

ZHONG Luohao1, KUANG Tangqing1(), LAI Jiamei2, LIU Hesheng2, LAI Dewei1   

  1. 1.School of Mechatronics &Vehical Engineering,East China Jiaotong University,Nanchang 330013,China
    2.School of Mechatronics Engineering,Nanchang University,Nanchang 330031,China
  • Received:2021-01-20 Online:2021-05-26 Published:2021-05-24
  • Contact: KUANG Tangqing E-mail:tkuang@ecjtu.edu.cn

摘要:

以气体辅助注射成型(GAIM)、水辅助注射成型(WAIM)、气体驱动弹头辅助注射成型(G-PAIM)及水驱动弹头辅助注射成型(W-PAIM)制备了一系列短玻璃纤维增强聚丙烯弯形管件,对比了各成型工艺对其管件壁厚及玻璃纤维取向分布的影响。结果表明,以管件总体壁厚大小排序为GAIM>WAIM>W-PAIM>G-PAIM,其中G?PAIM与W-PAIM管件壁厚差异较小;4种成型工艺的管件壁厚方差均较小,各壁厚均匀性较好;WAIM管件的玻璃纤维取向度总体上高于GAIM;且弹头的引入使得管件沿流动方向的玻璃纤维取向度更高。

关键词: 成型工艺, 短玻璃纤维增强聚丙烯, 壁厚, 方差, 玻璃纤维取向

Abstract:

A series of short-glass-fiber-reinforced polypropylene bending pipes were prepared via gas-assisted injection molding (GAIM), water-assisted injection molding (WAIM), gas-projectile-assisted injection molding (G?PAIM) and water-projectile-assisted injection molding (W?PAIM). The effect of different molding processes on the residual wall thickness (RWT) and orientation distribution of glass fibers was investigated comparatively. The results indicated that the overall RWT of the pipes decreased by an order of GAIM > WAIM > W-PAIM > G-PAIM, and the difference of RWT between G-PAIM and W-PAIM pipes was small. The RWT variance of the pipe fittings obtained from the four forming processes was small, and the uniformity of the RWT was good. The glass fiber orientation of the WAIM pipes was generally higher than that of the GAIM. The introduction of projectile made the pipe fittings a higher orientation along the flow direction.

Key words: molding process, short-glass-fiber-reinforced polypropylene, residual wall thickness, variance, glass fiber orientation

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