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Reinforced concrete pressure vessels for nuclear reactor installations
Mandrel for forming a composite panel of varied thickness M~Kinney, M.E. (The Boeing Company, Seattle, WA, USA) US Pat 4 459 171 (10 July 1984) The mandrel comprises a n u m b e r of equivalent peripheral panels which are juxtaposed and reversed to have wide and narrow ends arranged alternately around the mandrel.
Molded articles comprising fiber reinforced styrene polymers Rademacher, LE. (Monsanto Company, St Louis` MO, USA) USPat4473615(25 September 1984) Glass fibre reinforcement identical to that used in USPat4473614 is used in matrix of a styrene homopolymer or styrene- acrylonitrile copolymers~
Laminated pipe insulation product and method of producing same (Murphy, H.A., Lehighton, PA, USA~ US Pat 4 459 333 (10 July 1984) Laminated pipe insulation in the shape of an L or a T is produced by compressing and heating layers of fibreglass containing a resin and resinimpregnated mineral wool in a mould, and curing while the mineral wool layer is at a higher temperature than the fibreglass layer.
Reinforced elastomer products Watson, S.C. (Watson Bowman Associates Inc, Amherst. NY, USA) US Pata 4 473 680 (25 September 1984) A load-bearing device has a core section of elastomer and hard, crushed reinforcement to minimize deformation under compression and an outer section of elastomer free of reinforcement
Composite silicon carbide/silicon nitride coatings for carbon-carbon materials VeltrL ILD. and Galasso, F.S. (United Technologies Corporation, Hartford, CT, USA) US Pat4 472 476 H8 September 1984) Elevated temperature environmental resistance is afforded to carbon/carbon composites by applying an integral SiC coating, 0.013-0.76 m m thick, on the substrate surface and then a layer of Si3N4, 0.076-0.76 m m thick, on the SiC by CVD. Prefabricated building panel Nourse, J.T. (Con-Tex Elements Inc,, Chicago City, MN, USA) US Pat4 472 919(25 September 1984) A wire-reinforced mesh is attached to studs by V-shaped bolsters in a reinforced concrete panel. The bolsters allow the panel to flex relative to the studs in the general plane of the layer, and provide compressive and tensile support for the layer relative to the studs in a plane perpendicular to the layer. Fiber-reinforced resin coil spring and method of manufacturing the same Hashimoto, K (Kato Hatsujo Kaisha Limited, Yokohama, Japan) US Pat 4 473 217 (25 September 1984) A rod-shaped bundle of glass or carbon fibres is immersedt~n thermosetting resin and twisted. A water-soluble PVA tape is then wound onto the twisted resin-impregnated bundle to form a winding fibre bundle which in turn is wound along the coiled groove of a metal core. The assembly is heated and the solidified fibre bundle removed. Golf ball utilizing graphite materials (Kloppenburg J,K,, Bayside and Kinsley, S.E., Milwaukee, both of Wl, USA) US Pat 4 473 229 (25 September 1984) This golf ball has a core comprising graphite fibres uniformly distributed throughout a resilient resin, about which is a winding formed of graphite fibre yarns impregnated with resilient resin. The core and winding are overlaid with a cover. Molded articles comprising fiber reinforced polyether modified styrene polymers Rademacher, LE. (Monsanto Company, St Company, St Louis, MO, USA) US Pat4 473 614 (25 September 1984) In this composite a glass fibre mat or weave of fibre length 25 m m and diameter 5-25 p m is used to reinforce a polyether-modified styrene in the range 45-75 parts glass fibre: 55-25 parts resin. Details of the resin modification are also given.
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Pitch for carbon fibers Uemura, S. (Nippon Oil C o m p a n y Limited, Japan) US Pat 4 474 617 (2 October 1984) latch is heat treated and then oxidized with a gas of oxygen, ozone, nitrogen oxide, sulphur containing gas or mixtures thereof at 150-400 ° C at elevated pressure for 5 rain - 3 h. Moldable fibrous mat and product molded therefrom Doerer, ILP. and Karpik, J.T. (Van Dresser Corporation. Troy, MI, USA) US Pat4 474 846 (2 October 1984) A soft. flexible, handleable fibrous mat contains cellulose-base fibres intertwined with carrier fibres impregnated with uncured thermosetting resin. Carbon fiber and resin composition reinforced by the same Nakakma, K. et al (Toho Beslon Co Ltd and Teijin Chemicals Ltd, both of Tokyo, Japan) US Pat4 474 906 (2 October 1984) Carbon fibres are coated with 0.3-10 wt % of a completely thermoplastic polyurethane resin. Elongated spring member Meyer, L.S. (Kidde Recreation Products Inc., North Brook, IL USA) US Pat 4 475 723 (9 October 1984) This spring is formed from fibre-reinforced resin, the strands being parallel to one another in the straight medial portion and completely encircling the bored circular end-terminals. Motor vehicle roof of composite material Vogt. H., Kloppe, H. and Spiegel, E. (Ford Motor Company, Dearborn. MI, USA) US Pat4 475 765 (9 October 1984) The roof is hot pressed from a stack of impermeable outer layer, intermediate structural layer, a semi-rigid porous layer and/or a decorative inner layer. The layers are pressed to form flange areas of different cross-sections, with which the roof is attached to the vehicle framework. Fiber reinforced grid for a storage cell and method of manufacturing it Viala, J.-C. et al (Compagnie Europeene d'Accumulateurs` Paris, France) US Pat 4 476 206 (9 October 1984) Bundles of conductive thread embedded in a matrix of Pb, Cu, Cd or Ni are interwoven to form a loosely woven cloth. The cloth also contains non-conductive threads to maintain the relative positions of the conductive threads. Carbon/carbon rocket motor exit cone reinforcement
O'Driscoll, P.F., Crowe, G.E. and Berry. J. (The Secretary of the Air Force, Washington, DC, USA) US Pat4 477 024 (16 October 1984) An exit cone for a rocket motor comprises three layers of material. First is a layer of spirally wound, phenolic resin-impregnated carbon fibre cloth; second a layer of spirally wound, phenolic resin-impregnated high silica cloth tape; and third a layer of helically wound, epoxy resin-impregnated carbon fibre. Reinforced concrete pressure vessels for nuclear reactor installations Schbening J., Schwiers` H.-G. and Mitterbacher, P. (Hochtemperatur- Reaktorbau GmbFL Cologne, FRG) US Pat 4 477 409 (16 october 1984) A reinforced concrete vessel with an opening has a lining immediately around the opening which is anchored in the concrete wall. The lining which is in direct contact with the cooling medium in the reactor, is slightly spaced away from the concrete vessel and can move independent of the vessel to relieve stress. Reinforcing element and method of making the same Sheehan. KW. (Sherwood Research Corporation. Johnson City, TIN, USA) US Pat 4 477 522 (16 October 1984) This element is formed from a bundle of about 15-100 strands, about 8-50 m m in length. The strands are generally co-extensive and are entangled together in a limited area about their centres but are free at their ends. High strength aramid spun yarn Lauterbach, H.G. (E.I. DuPont de Nemours and Company, Wilmington, De, USA) US Pat4 477 526 (16 October 1984) P-aramid fibres have at least 50% of their ends fibrillated into at least 5 fibrils, the lengths of which are "%0 times the diameter of the unfibrillated portion of the fibre. Molding resins based on blends of acid copolymer/hydrocarbon polyolefin/reinforcing fiber/wetting agent Murphy, C.V. (E.I. DuPont de Nemours and Company, Wilmington. DE, USA) US Pat4 477 617 (16 October 1984) The detailed composition of a resin comprising o~fl--unsaturated carboxylic acid and a,-olefi n is given. The resin is reinforced with 5-50 wt % glass fibre or glass/mineral fibres. Composite rivet Strand, N.S. (Microdot lnc, Darien, CT, USA) US Pat4 478 544 (23 October 1984) This rivet comprises parallel, longitudinal carbon fibres in a B-staged thermoset resin matrix with circumferential aromatic polyamid fibres enveloping the carbon fibres` also in a Bstaged thermoset resin. After formation of the rivet head, the polyamid fibres envelop the carbon fibres to prevent splaying of the carbon fibres. Reinforced support sheet and method for making same Sommer, H. and Gronle. H. ( Elring Dichtungswerke GmbH, Fellback. FRG) US Pat4 478 887 (23 October 1984) A sheet-like support material has a layer of elastomer applied to both sides successively by means of calender rollers. The elastomer contains 80% asbestos-free, mineral base materiak 14% asbestos-free fibre and ,x6% of elastomeric binder
COMPOSITES. OCTOBER 1985
Molded articles comprising fiber reinforced styrene polymers Rademacher, LE. (Monsanto Company, St Louis` MO, USA) USPat4473615(25 September 1984) Glass fibre reinforcement identical to that used in USPat4473614 is used in matrix of a styrene homopolymer or styrene- acrylonitrile copolymers~
Laminated pipe insulation product and method of producing same (Murphy, H.A., Lehighton, PA, USA~ US Pat 4 459 333 (10 July 1984) Laminated pipe insulation in the shape of an L or a T is produced by compressing and heating layers of fibreglass containing a resin and resinimpregnated mineral wool in a mould, and curing while the mineral wool layer is at a higher temperature than the fibreglass layer.
Reinforced elastomer products Watson, S.C. (Watson Bowman Associates Inc, Amherst. NY, USA) US Pata 4 473 680 (25 September 1984) A load-bearing device has a core section of elastomer and hard, crushed reinforcement to minimize deformation under compression and an outer section of elastomer free of reinforcement
Composite silicon carbide/silicon nitride coatings for carbon-carbon materials VeltrL ILD. and Galasso, F.S. (United Technologies Corporation, Hartford, CT, USA) US Pat4 472 476 H8 September 1984) Elevated temperature environmental resistance is afforded to carbon/carbon composites by applying an integral SiC coating, 0.013-0.76 m m thick, on the substrate surface and then a layer of Si3N4, 0.076-0.76 m m thick, on the SiC by CVD. Prefabricated building panel Nourse, J.T. (Con-Tex Elements Inc,, Chicago City, MN, USA) US Pat4 472 919(25 September 1984) A wire-reinforced mesh is attached to studs by V-shaped bolsters in a reinforced concrete panel. The bolsters allow the panel to flex relative to the studs in the general plane of the layer, and provide compressive and tensile support for the layer relative to the studs in a plane perpendicular to the layer. Fiber-reinforced resin coil spring and method of manufacturing the same Hashimoto, K (Kato Hatsujo Kaisha Limited, Yokohama, Japan) US Pat 4 473 217 (25 September 1984) A rod-shaped bundle of glass or carbon fibres is immersedt~n thermosetting resin and twisted. A water-soluble PVA tape is then wound onto the twisted resin-impregnated bundle to form a winding fibre bundle which in turn is wound along the coiled groove of a metal core. The assembly is heated and the solidified fibre bundle removed. Golf ball utilizing graphite materials (Kloppenburg J,K,, Bayside and Kinsley, S.E., Milwaukee, both of Wl, USA) US Pat 4 473 229 (25 September 1984) This golf ball has a core comprising graphite fibres uniformly distributed throughout a resilient resin, about which is a winding formed of graphite fibre yarns impregnated with resilient resin. The core and winding are overlaid with a cover. Molded articles comprising fiber reinforced polyether modified styrene polymers Rademacher, LE. (Monsanto Company, St Company, St Louis, MO, USA) US Pat4 473 614 (25 September 1984) In this composite a glass fibre mat or weave of fibre length 25 m m and diameter 5-25 p m is used to reinforce a polyether-modified styrene in the range 45-75 parts glass fibre: 55-25 parts resin. Details of the resin modification are also given.
344
Pitch for carbon fibers Uemura, S. (Nippon Oil C o m p a n y Limited, Japan) US Pat 4 474 617 (2 October 1984) latch is heat treated and then oxidized with a gas of oxygen, ozone, nitrogen oxide, sulphur containing gas or mixtures thereof at 150-400 ° C at elevated pressure for 5 rain - 3 h. Moldable fibrous mat and product molded therefrom Doerer, ILP. and Karpik, J.T. (Van Dresser Corporation. Troy, MI, USA) US Pat4 474 846 (2 October 1984) A soft. flexible, handleable fibrous mat contains cellulose-base fibres intertwined with carrier fibres impregnated with uncured thermosetting resin. Carbon fiber and resin composition reinforced by the same Nakakma, K. et al (Toho Beslon Co Ltd and Teijin Chemicals Ltd, both of Tokyo, Japan) US Pat4 474 906 (2 October 1984) Carbon fibres are coated with 0.3-10 wt % of a completely thermoplastic polyurethane resin. Elongated spring member Meyer, L.S. (Kidde Recreation Products Inc., North Brook, IL USA) US Pat 4 475 723 (9 October 1984) This spring is formed from fibre-reinforced resin, the strands being parallel to one another in the straight medial portion and completely encircling the bored circular end-terminals. Motor vehicle roof of composite material Vogt. H., Kloppe, H. and Spiegel, E. (Ford Motor Company, Dearborn. MI, USA) US Pat4 475 765 (9 October 1984) The roof is hot pressed from a stack of impermeable outer layer, intermediate structural layer, a semi-rigid porous layer and/or a decorative inner layer. The layers are pressed to form flange areas of different cross-sections, with which the roof is attached to the vehicle framework. Fiber reinforced grid for a storage cell and method of manufacturing it Viala, J.-C. et al (Compagnie Europeene d'Accumulateurs` Paris, France) US Pat 4 476 206 (9 October 1984) Bundles of conductive thread embedded in a matrix of Pb, Cu, Cd or Ni are interwoven to form a loosely woven cloth. The cloth also contains non-conductive threads to maintain the relative positions of the conductive threads. Carbon/carbon rocket motor exit cone reinforcement
O'Driscoll, P.F., Crowe, G.E. and Berry. J. (The Secretary of the Air Force, Washington, DC, USA) US Pat4 477 024 (16 October 1984) An exit cone for a rocket motor comprises three layers of material. First is a layer of spirally wound, phenolic resin-impregnated carbon fibre cloth; second a layer of spirally wound, phenolic resin-impregnated high silica cloth tape; and third a layer of helically wound, epoxy resin-impregnated carbon fibre. Reinforced concrete pressure vessels for nuclear reactor installations Schbening J., Schwiers` H.-G. and Mitterbacher, P. (Hochtemperatur- Reaktorbau GmbFL Cologne, FRG) US Pat 4 477 409 (16 october 1984) A reinforced concrete vessel with an opening has a lining immediately around the opening which is anchored in the concrete wall. The lining which is in direct contact with the cooling medium in the reactor, is slightly spaced away from the concrete vessel and can move independent of the vessel to relieve stress. Reinforcing element and method of making the same Sheehan. KW. (Sherwood Research Corporation. Johnson City, TIN, USA) US Pat 4 477 522 (16 October 1984) This element is formed from a bundle of about 15-100 strands, about 8-50 m m in length. The strands are generally co-extensive and are entangled together in a limited area about their centres but are free at their ends. High strength aramid spun yarn Lauterbach, H.G. (E.I. DuPont de Nemours and Company, Wilmington, De, USA) US Pat4 477 526 (16 October 1984) P-aramid fibres have at least 50% of their ends fibrillated into at least 5 fibrils, the lengths of which are "%0 times the diameter of the unfibrillated portion of the fibre. Molding resins based on blends of acid copolymer/hydrocarbon polyolefin/reinforcing fiber/wetting agent Murphy, C.V. (E.I. DuPont de Nemours and Company, Wilmington. DE, USA) US Pat4 477 617 (16 October 1984) The detailed composition of a resin comprising o~fl--unsaturated carboxylic acid and a,-olefi n is given. The resin is reinforced with 5-50 wt % glass fibre or glass/mineral fibres. Composite rivet Strand, N.S. (Microdot lnc, Darien, CT, USA) US Pat4 478 544 (23 October 1984) This rivet comprises parallel, longitudinal carbon fibres in a B-staged thermoset resin matrix with circumferential aromatic polyamid fibres enveloping the carbon fibres` also in a Bstaged thermoset resin. After formation of the rivet head, the polyamid fibres envelop the carbon fibres to prevent splaying of the carbon fibres. Reinforced support sheet and method for making same Sommer, H. and Gronle. H. ( Elring Dichtungswerke GmbH, Fellback. FRG) US Pat4 478 887 (23 October 1984) A sheet-like support material has a layer of elastomer applied to both sides successively by means of calender rollers. The elastomer contains 80% asbestos-free, mineral base materiak 14% asbestos-free fibre and ,x6% of elastomeric binder
COMPOSITES. OCTOBER 1985