发明授权
- 专利标题: Low pressure process for continuous fiber reinforced polyamic acid resin matrix composite laminates
- 专利标题(中): 连续纤维增强聚酰胺酸树脂基复合层压板的低压工艺
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申请号: US924689申请日: 1992-07-30
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公开(公告)号: US5312579A公开(公告)日: 1994-05-17
- 发明人: Darleen A. Druyun , Tan-Hung Hou , Paul W. Kidder , Rakasi M. Reddy , Robert M. Baucom
- 申请人: Darleen A. Druyun , Tan-Hung Hou , Paul W. Kidder , Rakasi M. Reddy , Robert M. Baucom
- 申请人地址: DC Washington
- 专利权人: The United States of America as represented by the United States National eronautics and Space Administration
- 当前专利权人: The United States of America as represented by the United States National eronautics and Space Administration
- 当前专利权人地址: DC Washington
- 主分类号: B29C70/46
- IPC分类号: B29C70/46 ; C08J5/24 ; B29C67/14
摘要:
A low pressure process was developed for preparing a well-consolidated polyimide composite laminate. Prepreg plies were formed from unidirectional fibers and a polyamic acid resin solution. Molding stops were placed at the sides of a matched metal die mold. The prepreg plies were cut shorter than the length of the mold in the in-plane lateral direction and were stacked between the molding stops to a height which was higher than the molding stops. The plies were then compressed to the height of the stops and heated to allow the volatiles to escape and to start the imidization reaction. After removing the stops from the mold, the heat was increased and 0-500 p.s.i. pressure was applied to complete the imidization reaction. The heat and pressure were further increased to form a consolidated polyimide composite laminate.
公开/授权文献
- US6080404A Materials and methods for removal of substances from fluids 公开/授权日:2000-06-27