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5585455 Reinforcement composites for thermosetting polymer systems
PatentsA L ER T
embedded in a resin matrix. The method involves the steps of aligning discontinuous fibers by use of a strong electric field while simultaneously inserting the fibers onto a polymer substrate comprised of an uncured resin matrix. A preferred embodiment includes the incorporation of a mesh or a glass capillary array located parallel and adjacent to the polymer substrate to further ensure fiber alignment. After the fibers are attached to the uncured resin matrix, the aligned fibers are forced to lie down parallel along the surface of the polymer substrate by mechanically forcing the fibers fiat. The newly formed reinforced polymer films may then be stacked with the fibers of each ply oriented to achieve the desired mechanical properties, and then cured to produce an improved composite laminate which can be machined to form a high strength shaped member.
5585455 REINFORCEMENT COMPOSITES FOR THERMOSETTING POLYMER SYSTEMS Pratt Billy D; Collins Kenneth D Seneca, SC, UNITED STATES assigned to CoUinsCraft Fiberglass Corporation A composite reinforcement for use in pultrusion and other thermosetting manufacturing processes to produce products with smooth surfaces free of wrinkles and laps, methods of producing such a composite reinforcement and thermosetting polymer system products reinforced with the composite. Two or more layers of reinforcement material are bonded with powdered polyethylene or another appropriate polyolefin or polyethylene copolymer adhesive utilizing heat to produce a multi-ply composite reinforcement. This composite reinforcement can then be appropriately sheared, die cut or otherwise processed, if desirable, and thereafter used in pultrusion, cylinder winding, compression molding, open mold processing and other thermosetting manufacturing techniques with thermosetting resins in the final production process.
5586152 CARBON FIBER-REINFORCED CARBON COMPOSITE MATERIALS, PROCESSES FOR THEIR PRODUCTION, AND FIRST WALLS OF NUCLEAR FUSION REACTORS EMPLOYING THEM
the thickness direction to the thermal conductivity in a direction perpendicular to the thickness direction is at least 2, and the thermal conductivity in the thickness direction is at least 3 W/cm.°C
5597629 HIGH SHEAR STRENGTH PULTRUSION Johnson David W San Diego, CA, UNITED STATES assigned to Ebert Composites Corporation To produce a pultrusion which can be machined without undue strength loss bidirectional woven fiber fabric is modified to be pultrudable into a high shear strength composite member. In a preferred form of the invention the fabric is pleated in the pultrusion process to create an endless wall of stacked switchback pleated layers which defines a box beam wall in one example, and the shaft of a bolt in another. Products produced by this process have improved isotonic strength qualities over currently produced pultrusions, which are limited to unidirectional fibers, continuous fiber mats, or alternating layers of non-woven 0 ° and 90 ° cloth and do not have the shear strength inherent in the pleated configuration.
5599612 WOVEN CARBON FIBER FABRIC Muraki Toshio; Tokunou Masazumi; Sawaoka Ryuji; Hayashi Masahiko; Higashi Toshiaki; Tazaki Tokuo Matsuyama, JAPAN assigned to Toray Industries Inc A prepreg precursor including a carbon fiber woven fabric having applied to the fabric between about 0.5 to about 10 wt % of a stabilizer material for stabilizing the structural form of the fabric. Prepregs can then be produced using the woven fabric. Undesired settlement of matrix resin from the surface of the woven fabric is thus prevented. Hence, compared with a prepreg prepared using conventional woven fabric, a prepreg prepared by using the woven fabric of the invention can hold its tackiness for a long time and can be used to produce a fiber reinforced composite material excellent in smoothness without being devoid of surface resin.
5609741
Ioki Kimihiro; Okuyama Kohei; Niwa Kazuo; Seki Hitoshi Tokyo, JAPAN assigned to Mitsubishi Jukogyo Kabushiki Kaisha; Mitsubishi Chemical Corporation
METHOD OF MANUFACTURING A COMPOSITE MATERIAL
A carbon fiber-reinforced carbon composite material, wherein carbon fibers are oriented substantially in the thickness direction, the ratio of the thermal conductivity in
Illston Trevor J; Doleman Paul; Butler Edwin; Marquis Peter M; Ponton Clive B; Piramoon Rez; Gilbert Mark J Derby, UNITED KINGDOM assigned to Rolls-Royce plc
344
embedded in a resin matrix. The method involves the steps of aligning discontinuous fibers by use of a strong electric field while simultaneously inserting the fibers onto a polymer substrate comprised of an uncured resin matrix. A preferred embodiment includes the incorporation of a mesh or a glass capillary array located parallel and adjacent to the polymer substrate to further ensure fiber alignment. After the fibers are attached to the uncured resin matrix, the aligned fibers are forced to lie down parallel along the surface of the polymer substrate by mechanically forcing the fibers fiat. The newly formed reinforced polymer films may then be stacked with the fibers of each ply oriented to achieve the desired mechanical properties, and then cured to produce an improved composite laminate which can be machined to form a high strength shaped member.
5585455 REINFORCEMENT COMPOSITES FOR THERMOSETTING POLYMER SYSTEMS Pratt Billy D; Collins Kenneth D Seneca, SC, UNITED STATES assigned to CoUinsCraft Fiberglass Corporation A composite reinforcement for use in pultrusion and other thermosetting manufacturing processes to produce products with smooth surfaces free of wrinkles and laps, methods of producing such a composite reinforcement and thermosetting polymer system products reinforced with the composite. Two or more layers of reinforcement material are bonded with powdered polyethylene or another appropriate polyolefin or polyethylene copolymer adhesive utilizing heat to produce a multi-ply composite reinforcement. This composite reinforcement can then be appropriately sheared, die cut or otherwise processed, if desirable, and thereafter used in pultrusion, cylinder winding, compression molding, open mold processing and other thermosetting manufacturing techniques with thermosetting resins in the final production process.
5586152 CARBON FIBER-REINFORCED CARBON COMPOSITE MATERIALS, PROCESSES FOR THEIR PRODUCTION, AND FIRST WALLS OF NUCLEAR FUSION REACTORS EMPLOYING THEM
the thickness direction to the thermal conductivity in a direction perpendicular to the thickness direction is at least 2, and the thermal conductivity in the thickness direction is at least 3 W/cm.°C
5597629 HIGH SHEAR STRENGTH PULTRUSION Johnson David W San Diego, CA, UNITED STATES assigned to Ebert Composites Corporation To produce a pultrusion which can be machined without undue strength loss bidirectional woven fiber fabric is modified to be pultrudable into a high shear strength composite member. In a preferred form of the invention the fabric is pleated in the pultrusion process to create an endless wall of stacked switchback pleated layers which defines a box beam wall in one example, and the shaft of a bolt in another. Products produced by this process have improved isotonic strength qualities over currently produced pultrusions, which are limited to unidirectional fibers, continuous fiber mats, or alternating layers of non-woven 0 ° and 90 ° cloth and do not have the shear strength inherent in the pleated configuration.
5599612 WOVEN CARBON FIBER FABRIC Muraki Toshio; Tokunou Masazumi; Sawaoka Ryuji; Hayashi Masahiko; Higashi Toshiaki; Tazaki Tokuo Matsuyama, JAPAN assigned to Toray Industries Inc A prepreg precursor including a carbon fiber woven fabric having applied to the fabric between about 0.5 to about 10 wt % of a stabilizer material for stabilizing the structural form of the fabric. Prepregs can then be produced using the woven fabric. Undesired settlement of matrix resin from the surface of the woven fabric is thus prevented. Hence, compared with a prepreg prepared using conventional woven fabric, a prepreg prepared by using the woven fabric of the invention can hold its tackiness for a long time and can be used to produce a fiber reinforced composite material excellent in smoothness without being devoid of surface resin.
5609741
Ioki Kimihiro; Okuyama Kohei; Niwa Kazuo; Seki Hitoshi Tokyo, JAPAN assigned to Mitsubishi Jukogyo Kabushiki Kaisha; Mitsubishi Chemical Corporation
METHOD OF MANUFACTURING A COMPOSITE MATERIAL
A carbon fiber-reinforced carbon composite material, wherein carbon fibers are oriented substantially in the thickness direction, the ratio of the thermal conductivity in
Illston Trevor J; Doleman Paul; Butler Edwin; Marquis Peter M; Ponton Clive B; Piramoon Rez; Gilbert Mark J Derby, UNITED KINGDOM assigned to Rolls-Royce plc
344