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公开(公告)号：US5405683A
公开(公告)日：1995-04-11
申请号：US141293
申请日：1993-10-20
CPC分类号： B29C70/34 , B29C70/20 , Y10T428/24033 , Y10T428/24058
摘要： A shaped towpreg ribbon having a cross-sectional geometry which promotes intimate lateral contact between adjacent composite tows was prepared. The cross-sectional geometry is non-rectangular and promotes intimate lateral contact between adjacent towpreg ribbons during normal processing.
摘要翻译： 制备具有促进相邻复合丝束之间的亲密侧向接触的横截面几何形状的成形的丝束带。 横截面几何形状是非矩形的，并且在正常处理期间促进相邻的丝束带之间的紧密的侧向接触。
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公开(公告)号：US5057338A
公开(公告)日：1991-10-15
申请号：US524109
申请日：1990-05-16
CPC分类号： B05C19/02 , B29B15/12 , D02J1/18 , D06M23/08 , B29K2105/251 , Y10S118/05
摘要： This invention is a process for the uniform application of polymer powder particles to a filamentary material in a continuous manner to form a uniform composite prepreg material. A tow of the filamentary material is fed under carefully controlled tension into a spreading unit, where it is spread pneumatically into an even band. The spread filamentary tow is then coated with polymer particles from a fluidized bed, after which the coated filamentary tow is fused before take-up on a package for subsequent utilization. This process produces a composite prepreg uniformly without imposing severe stress on the filamentary material, and without requiring long, high temperature residence times for the polymer.
摘要翻译： 本发明是将聚合物粉末颗粒以连续的方式均匀地施加到丝状材料上以形成均匀的复合预浸料材料的方法。 将丝状材料的纤维束在精心控制的张力下进料到扩散单元中，其中气流扩展成均匀的带。 然后将扩展的丝状丝束从流化床涂覆聚合物颗粒，之后将涂覆的丝状丝束卷绕在包装上以供随后使用。 该方法均匀地生产复合预浸料，而不会对丝状材料施加严重的应力，并且不需要聚合物的长的高温停留时间。
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3.发明授权Low pressure process for continuous fiber reinforced polyamic acid resin matrix composite laminates 失效连续纤维增强聚酰胺酸树脂基复合层压板的低压工艺
公开(公告)号：US5312579A
公开(公告)日：1994-05-17
申请号：US924689
申请日：1992-07-30
CPC分类号： C08J5/24 , B29C70/46 , C08J2379/08
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.
摘要翻译： 开发了一种用于制备良好固化的聚酰亚胺复合层压板的低压方法。 预浸层由单向纤维和聚酰胺酸树脂溶液形成。 成型止挡件放置在匹配的金属模具的侧面。 将预浸料坯在面内横向方向上比模具的长度短，并且在模制止挡件之间堆叠到高于模制件的高度。 然后将层压缩至止挡件的高度并加热以允许挥发物逸出并开始酰亚胺化反应。 从模具中取出止动件后，热量增加，0-500 p.s.i。 施加压力以完成酰亚胺化反应。 进一步增加热和压力以形成固化的聚酰亚胺复合层压材料。
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4.发明授权Preparing composite materials from matrices of processable aromatic polyimide thermoplastic blends 失效从可加工的芳族聚酰亚胺热塑性共混物的基质制备复合材料
公开(公告)号：US5004575A
公开(公告)日：1991-04-02
申请号：US262268
申请日：1988-10-21
IPC分类号： C08J5/24
CPC分类号： C08J5/24 , C08J2379/08
摘要： Composite materials with matrices of tough, thermoplastic aromatic polyimides are obtained by blending semi-crystalline polyimide powders with polyamic acid solutions to form slurries, which are used in turn to prepare prepregs, the consolidation of which into finished composites is characterized by excellent melt flow during processing.
摘要翻译： 通过将半结晶聚酰亚胺粉末与聚酰胺酸溶液混合以形成浆料来获得具有韧性，热塑性芳族聚酰亚胺基质的复合材料，其依次用于制备预浸料，其固化成成品复合材料的特征在于优异的熔体流动 处理。
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公开(公告)号：US5814259A
公开(公告)日：1998-09-29
申请号：US824097
申请日：1997-03-25
申请人： Erik S. Weiser , Robert M. Baucom , John J. Snoha
发明人： Erik S. Weiser , Robert M. Baucom , John J. Snoha
IPC分类号： B29C43/10
CPC分类号： B29C43/10 , B29K2083/005 , B29K2883/00
摘要： This invention improves upon a method for molding structural parts from preform material. Preform material to be used for the part is provided. A silicone rubber composition containing entrained air voids is prepared. The silicone rubber and preform material assembly is situated within a rigid mold cavity used to shape the preform material to the desired shape. The entire assembly is heated in a standard heating device so that the thermal expansion of the silicone rubber exerts the pressure necessary to force the preform material into contact with the mold container. The introduction of discrete air voids into the silicone rubber allows for accurately controlled pressure application on the preform material at the cure temperature.
摘要翻译： 本发明改进了用于从预制件材料模制结构部件的方法。 提供了用于零件的预制材料。 制备含有夹带气泡的硅橡胶组合物。 硅橡胶和预成型材料组件位于用于将预成型件材料成型为所需形状的刚性模腔内。 整个组件在标准加热装置中被加热，使得硅橡胶的热膨胀发挥迫使预成型材料与模具容器接触所必需的压力。 在硅橡胶中引入离散的空气孔允许在固化温度下对预成型材料进行精确控制的压力施加。
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公开(公告)号：US4416266A
公开(公告)日：1983-11-22
申请号：US264381
申请日：1981-05-15
申请人： Robert M. Baucom
发明人： Robert M. Baucom
IPC分类号： A61B17/122 , A61B19/00 , B29C43/12 , B29C70/44 , A61B17/12
CPC分类号： B29C70/44 , A61B17/1227 , A61B2017/00902 , B29C43/12 , Y10T24/44897
摘要： An X-ray transparent and biological inert medical clip for treating aneurisms and the like and process for producing same wherein a graphite reinforced composite film 15, 16, 20 and 21 (FIGS. 1a-1d) is molded into a unitary structure having a pair of "hourglass" like cavities 30, 31 (FIG. 2) hinged together (33) with a pair of jaws 27 and 28 for grasping the aneurism extending from the wall of one cavity and a silicone rubber pellet 35 (FIG. 3) disposed in the other cavity to exert a spring force through the hinge area 33 to normally bias the jaws into contact with each other.
摘要翻译： 用于治疗动脉瘤等的X射线透明和生物惰性医疗夹子及其制造方法，其中将石墨增强复合膜15,16,20和21（图1a-1d）模制成具有一对的单一结构 的“沙漏”，如空腔30,31（图2），其与一对夹爪27和28铰接在一起（33），用于抓握从一个空腔的壁延伸的动脉瘤和设置的硅橡胶颗粒35（图3） 在另一个腔体中通过铰链区域33施加弹簧力，以使钳口彼此正常地偏置。
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公开(公告)号：US4447943A
公开(公告)日：1984-05-15
申请号：US465363
申请日：1983-02-10
申请人： Robert M. Baucom
发明人： Robert M. Baucom
IPC分类号： A61B17/122 , A61B19/00 , B29C43/12 , B29C70/44 , B23P17/00
CPC分类号： B29C70/44 , A61B17/1227 , A61B2017/00902 , B29C43/12 , Y10T29/4981 , Y10T29/49872
摘要： An X-ray transparent and biological inert medical clip for treating aneurisms and the like and process for producing same wherein a graphite reinforced composite film 15, 16, 20 and 21 (FIGS. 1a-1d) is molded into a unitary structure having a pair of "hourglass" like cavities 30, 31 (FIG. 2) hinged together (33) with a pair of jaws 27 and 28 for grasping the aneurism extending from the wall of one cavity and a silicone rubber pellet 35 (FIG. 3) disposed in the other cavity to exert a spring force through the hinge area 33 to normally bias the jaws into contact with each other.
摘要翻译： 用于治疗动脉瘤等的X射线透明和生物惰性医疗夹子及其制造方法，其中石墨增强复合膜15,16,20和21（图1a-1d）被模制成具有一对的单一结构 的“沙漏”，如空腔30,31（图2），其与一对夹爪27和28铰接在一起（33），用于抓住从一个空腔的壁延伸的动脉瘤和设置的硅橡胶颗粒35（图3） 在另一个腔体中通过铰链区域33施加弹簧力，以使钳口彼此正常地偏置。
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