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Deep Drawing of Commingled yarn Fabric Reinforced Thermoplastic

混纱织物增强热塑性塑料的深拉

基本信息

批准号：
10650114
负责人：
FUJIWARA Junsuke
金额：
$ 2.3万
依托单位：
Osaka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 2000
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-10650114/
关键词：
Composites Moulding process Deep drawing Wrinkle formation Polypropylene resin Glass fiber Commingled yarn Moldability しわ

项目摘要

The use of continuous fiber reinforced thermoplastics and thermosets as lightweight heavy-duty engineering materials has increased because of their obvious advantages. Compared to thermosets, thermoplastic composites have superior damage tolerance, good hot/wet performance, unlimited shelf life, short processing cycles and easy recycling. In this report, commingled yarn fabric of glass fiber and polypropylene resin was used. This material has become progressively more attractive to various industrial sectors. But useful moulding process are not confined yet because it was developed only few years ago.The results of the standardized deep drawing investigations, using pre-consolidated material of commingled sheets of glass fiber and polypropylene fibers, are carried out. It shows that the standardized deep drawing tool, used for the investigations outlined in this paper, is indispensable for designers. Apart from the process parameters, it is possible to examine the maximum drawing depth of any chosen reinforced material.The deep drawing was carried out with various drawing depths and various punch radii. The main results obtained were as follows :1. The heating temperature of the composite material should be 220℃ and the mold temperature about 100℃ to obtain optimum quality of the parts.2. The maximum drawing depth decreased with decreasing punch radius.3. Wrinkle formation occurred at the 0° portion because of fiber buckling, and at the 45° portion because of shear deformation.

连续纤维增强热塑性塑料和热固性树脂作为轻质重载工程材料因其明显的优点而得到越来越多的使用。与热固性塑料相比，热塑性复合材料具有优越的损伤容限、良好的热/湿性能、无限的保质期、较短的加工周期和易于回收利用。本文采用玻璃纤维与聚丙烯树脂混纺纱线织物。这种材料对不同的工业部门越来越有吸引力。但实用的成型工艺还不受限制，因为它是几年前才开发出来的。标准化拉深调查的结果是使用玻璃纤维和聚丙烯纤维混杂的预固结材料进行的。这表明，用于本文所述研究的标准化拉深工具对于设计人员来说是不可或缺的。除了工艺参数外，还可以检查任何选定增强材料的最大拉深。拉深是在不同的拉深深度和冲头半径下进行的。得到的主要结果如下：1.复合材料的加热温度应为220℃，模具温度应在100℃左右，才能获得最佳的零件质量。最大拉深随凸模半径的减小而减小。纤维屈曲在0°处起皱，剪切变形在45°处起皱。