中国塑料 ›› 2022, Vol. 36 ›› Issue (7): 85-92.DOI: 10.19491/j.issn.1001-9278.2022.07.012

• 加工与应用 • 上一篇    下一篇

熔融浸渍工艺参数对纤维束渗透率影响的研究

杨一飞1, 王明欢1, 李杰1, 何亚东1,2, 信春玲1, 任峰1()   

  1. 1.北京化工大学机电工程学院,北京 100029
    2.教育部高分子材料加工装备工程研究中心,北京 100029
  • 收稿日期:2022-03-09 出版日期:2022-07-26 发布日期:2022-07-20
  • 通讯作者: 任峰(1982—),男,副教授,研究方向为热塑性树脂基复合材料、生物基复合材料,renfeng@mail.buct.edu.cn
    E-mail:renfeng@mail.buct.edu.cn

Effect of melt⁃impregnation process parameters on permeability of fiber bundles

YANG Yifei1, WANG Minghuan1, LI Jie1, HE Yadong1,2, XIN Chunlin1, REN Feng1()   

  1. 1.College of Mechanical and Electrical Engineering,Beijing University of Chemical Technology,Beijing 100029,China
    2.Polymer Processing Equipment Engineering Research Center,Ministry of Education,Beijing 100029,China
  • Received:2022-03-09 Online:2022-07-26 Published:2022-07-20
  • Contact: REN Feng E-mail:renfeng@mail.buct.edu.cn

摘要:

在连续长纤维增强热塑性复合材料浸渍模型中,渗透率是一个十分重要的参数。准确测量熔融浸渍工艺中高黏度树脂熔体浸润纤维束的渗透率,有助于浸渍模型更好指导熔融浸渍模具设计和工艺参数优化,制备出性能优异的热塑性树脂基复合材料。本文通过自制实验装置,测定了熔融浸渍工艺中高黏度树脂浸渍单向纤维束时纤维束张力和浸渍压力变化对渗透率的影响,根据实验结果拟合出工艺参数与渗透率关系的计算公式。结果表明:纤维束张力越大渗透率越低;浸渍压力越大,纤维束渗透率越大,但增大幅度随张力增大而降低。

关键词: 渗透率, 浸渍压力, 纤维束张力

Abstract:

Permeability is a very important index in the impregnation model of continuous long?fiber?reinforced thermoplastic composites. An accurate measurement for the permeability of fiber bundles impregnated with a high?viscosity resin melt in the melt?impregnation process can help the impregnation model to better guide the design of melt?impregnation molds and the optimization of process parameters for the preparation of thermoplastic resin?based composites with excellent performance. The effects of fiber bundle tension and impregnation pressure variation on the permeation rate during the melt impregnation process with high?viscosity resin impregnating unidirectional fiber bundles were investigated using a homemade experimental setup. A formula for the relationship between the process parameters and permeation rate was fitted according to the experimental results. The results indicated that a greater tension of fiber bundle resulted in lower permeability, but a greater impregnation pressure led to greater permeability of the fiber bundle. Moreover, the increment rate decreased with an increase in tension.

Key words: permeability, impregnation pressure, fiber bundle tension

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