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塑料作为轻质重型工程材料的使用有所增加，因为与热固性塑料相比，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、短的加工周期和易于使用。在本报告中，使用了玻璃纤维和聚丙烯树脂的混合纱线织物，这种材料对各个工业领域越来越有吸引力，但由于它是在几年前才开发出来的，因此实用的成型工艺尚未受到限制。使用玻璃纤维和聚丙烯纤维混合片材的预固结材料进行了标准化拉深研究，这表明用于本文概述的研究的标准化拉深工具对于设计师来说是必不可少的。根据工艺参数，可以检查任何所选增强材料的最大拉深深度。采用不同的拉深深度和不同的冲头半径进行深拉深，获得的主要结果如下： 1．复合材料应模具温度为220℃，模具温度约为100℃，以获得最佳的零件质量。2．最大拉深深度随着冲头半径的减小而减小。3．由于纤维屈曲，在0°部分和45°部分出现皱纹。部分由于剪切变形。