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Boards and panels
Process for producing cylindrical reinforcing fibrous moulding Honda Giken Kogyo Kabushiki Kaisha, Japan) GB 2 18 7 995A (23 September 1987) An aqeous'paper-making' technique to produce cylindrical fibre preforms with an inorganic binder is described. Cementitious board having fibre mesh reinforced edges (United States Gypsum Co, USA) GB 2 188 271A (30 September 1987) Atechnique forthe continuous production of the named material is described. Die-free polymer forming process (NRDC, UK) GB 2188 276A (30 September 1987) Elongated polymer material ( fibre,sheet or tape), preferably from polyolefin, may be formed by withdrawing a continuous stream of solution/or gel without need for a die.
US PATENTS
prepared from a mixture comprising 40-60% cement, 30-40% silica and 5-15% cellulose fibres.
of 3.7-3.9.The fibres have a crystallization ratio of 92-97% and an a-Al20 scontent of 20-30 weight %.
Ultrahigh strength carbon fibers Hiramatsu, T., Matsuhisa, Y. and Higuchi, T. (Toray Industries Inc, Tokyo, Japan) US Pat 4 637 925 (20January 1987) Acrylic-based fibres are made the anode in a cell containing an electrolyte solution of nitrates ions at 40°C and are electrochemically oxidized with about 100-600 C of electricity per g of fibre. Following washing with water and drying, the fibres are heated in an inert or reductive atmosphere at 600-1000°C.
Racket frame (Cousin, J.-C., Wervicq-Sud, and Robin, J.A., Paris, both of France) US Pat 4 643 857 (17 February 1987) A mixture of thermoplastic and fibres is extruded to form an elongated element containing a cavity, the element allowed to cool, then cut into predetermined lengths and holes formed along their lengths.The cavity is filled with foam, the element is heat to soften it and then bent to form a racket frame with head and shaft portions. A throat piece is injection moulded around the first shaft portion and a handle is formed around the second shaft position.
Sized glass fibers and reinforced polymers containing the same Das, B., Temple, C.S. and Melle, C.A. (PPG Industries Inc, Pittsburgh, PA, USA) US Pat 4 637 956 (20January 1987) Strands of glass fibres that may be used as reinforcements in polymeric matrices are coated with an aqueous dispersion of an ungelled, cationic, resinuous reaction product ofa polyepoxide and a primary or secondary amine, one or more organo coupling agents and one or more cationic or non-ionic lubricants.
COMPONENTS Steering wheel Yano, I. and Kitakoga, H. (Mitsubishi Denki Kabushiki Kaisha, Japan) US Pat 4633 734(6January 1987) In the steering wheel claimed, the rim comprises a lightweight core surrounded by unidirectional FRP, with the metal spoke connecting the rim to the central bossvia alayer of unidirectional FRP. Structural component for transmitting torque Brunsch, K., Sappl, P. and Bongers, B. (Messerschmitt-BOlkow-Blohm GmbH, Munich, FRG) US Pat 4 634 399 (6 January 1987) An FRP structural component, which is used to join two ends in a safety steering system with a bent steering column, is described. The component comprises a coil-shaped body formed of FRP lattice rods wound at 70-85 o to the axis of the body. Epoxy steering wheel Overcashier, R.H. and Farris, R.D. (Shell Oil Company, Houston, TX, USA) US Pat 4 635 500 (13January 1987) A sealed, partially deflated, flexible tubular member is positioned so that it runs around the wheel rim, up a first spoke, round a central hub and back down the first spoke, around the rim to a second spoke where is configured as in the first spoke, and around the rest of the rim to join with the first end. The tube is covered with a woven tube of fibre reinforcement in a thermosetting resin, which bonds the steering wheel into a solid mass. Staple catting for fiber reinforcement material Boggs, B.A. (Allied Corporation, Morris Township, N J, USA) US Pat 4 637 286 (20January 1987) Elongated material is cut into predetermined lengths between two rolls in an apparatus. The apparatus contains a cutting roll with radially extending cutting blades and projections and a second roll with an elastic surface that engages with the projections on the first roll, thereby causing the two rolls to rotate in opposite directions. Boards and panels Harper, S. and Hiscock, D.G. (Cape Building Products Limited, Uxbridge, UK) USPat 4 637860 (20 January 1987) Non-asbestos corrugated sheet for external use is
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Finish composition for polyester fiber for rubber reinforcement Murase, S. (Unitika Limited, Osaka, Japan) US Pat 4 637 957 (20January 1987) Adhesion between polyester yarn and rubber is s aid to b e improved when the yarn is treated with a lubricant and 3-30 weight % of the initial condensation product and its intermediate of a melamine resin. Fibrous armor material
Epel, J.N. (Budd Company, Troy, MI, USA) US Pat 4 639 387 (27January 1987) Impact force is absorbed longitudinally along the axes of fibres in an FRP armour material in which the adhesion of the resin to the fibres is less than the cohesive strength of the fibres to afford relative movement of the fibres to the matrix. The fibres are arranged in thin layers where the fibre axes are mostly parallel to one another, with a few cross-over points where some of the fibres are oriented at an angle to the rest. Fiber wound plastic beverage can Schmeal, W.R., Singhal, S.N. and Lo, ICH. (Shell Oil Company, Houston, TX, USA) US Pat 4 640 853 (3 February 1987) The can, which will withstand pressure from carbonated beverages and has acceptable swelling resistance, has at least two fibre layers (polyethylene terephthalate) wound on a thermoplastic core (polypropylene) with adhesive layers between the fibre layers and the core, and between the fibre layers themselves. A barrier layer is also provided. BN coating of ceramic fibers for ceramic fiber composites Rice, R.W. (The Secretary of the Navy, Washington, DC, USA) US Pat 4 642 271 (10 February 1987) A ceramic/ceramic composite material has a coating of boron nitride on the reinforcing fibres. Fiber-reinforced lightweight alloy piston for an internal-combustion engine and associated method Ban, IC (Honda Giken Kogyo Kabushiki Kaisha, Tokyo, Japan) US Pat 4 643 078 (17 February 1987) A piston body of lightweight alloy and provided with a compression ring groove has reinforcement means situated at the inner surface of the groove comprising alumina fibres having a 0/aAI20s crystalline structure with a specific gravity
Backup material for small bore drilling Eidal, R.C. (Control Data Corporation, Minneapolis, MN, USA) US Pat 4 643 936 (17 February 1987) A work sheet for use during drilling, formed of material comprising glass/polymide, Kevlar/ polymide or glass/modified epoxy BT, is backed up with a sheet which comprises a core and layers of polyimide, fluorocarbon or high temperature polycarbonate fixed to opposite sides of the core.
Fiber reinforced resin coated optical fiber and proeess for producing the same Yoshihara, M. et al (Nitto Electric Industrial Co Ltd, Osaka, Japan) US Pat 4 645 297 (24 February 1987) Optical fibres are coated with a cured layer comprising continuous filament reinforcing material, a specified isocyanurate, a modified phenol novolak-based epoxy resin and a polymerization initiator. Foam laminate structures Baitinger, S.A., Brothers, R.C. and Dishart, K.T. (E.I. Du Pont de Nemours and Company Inc, Wilmington, D E, USA) US Pat 4 645 710(24 February 1987) Facer material is bonded to either side of a polyurethane or polyisocyanurate resin core by an adhesive containing acid, hydroxyl, amide or amine groups capable of reacting with the core material. The peel strength of the bond between the core and face material is about 2.72 kg m-]. Carbon fibre gun barrel Gladstone, D.H., Langlois, R. and Robertson, W.J. (Her Majesty the Queen in the right of Canada) US Pat 4 646 615 (3 March 1987) Epoxy resin-treated multi-filament carbon fibre is wound on a mandrel to create initially a layer configured to resist hot gas erosion on firing of the gun, and subsequently superimposed layers of helically wound material to provide a hoop stress equivalent to that of a steel barrel. Metal to composite tubular jolnts Lundy, B.T. (Hercules lncorported, Wilmington, DE, USA) US Pat 4 647 078 (3 March 1987) The joint comprises an inner sleeve for transferring mechanical loads, a composite tube formed from fibre layers mounted over the inner tube, an axial load transfer assembly in the form of an annular segmented collar and several elastometric layers - - one between the inner surface of the inner sleeve and the composite tube; a shear layer between the inner sleeve and the composite tube; and another shear layer between the composite tube and the segmented collar. The joint also includes a coupling means for use with a tube having complementary coupling means and a seal to prevent leakage of fluid through the joint.
COMPOSITES. JANUARY 1988
US PATENTS
prepared from a mixture comprising 40-60% cement, 30-40% silica and 5-15% cellulose fibres.
of 3.7-3.9.The fibres have a crystallization ratio of 92-97% and an a-Al20 scontent of 20-30 weight %.
Ultrahigh strength carbon fibers Hiramatsu, T., Matsuhisa, Y. and Higuchi, T. (Toray Industries Inc, Tokyo, Japan) US Pat 4 637 925 (20January 1987) Acrylic-based fibres are made the anode in a cell containing an electrolyte solution of nitrates ions at 40°C and are electrochemically oxidized with about 100-600 C of electricity per g of fibre. Following washing with water and drying, the fibres are heated in an inert or reductive atmosphere at 600-1000°C.
Racket frame (Cousin, J.-C., Wervicq-Sud, and Robin, J.A., Paris, both of France) US Pat 4 643 857 (17 February 1987) A mixture of thermoplastic and fibres is extruded to form an elongated element containing a cavity, the element allowed to cool, then cut into predetermined lengths and holes formed along their lengths.The cavity is filled with foam, the element is heat to soften it and then bent to form a racket frame with head and shaft portions. A throat piece is injection moulded around the first shaft portion and a handle is formed around the second shaft position.
Sized glass fibers and reinforced polymers containing the same Das, B., Temple, C.S. and Melle, C.A. (PPG Industries Inc, Pittsburgh, PA, USA) US Pat 4 637 956 (20January 1987) Strands of glass fibres that may be used as reinforcements in polymeric matrices are coated with an aqueous dispersion of an ungelled, cationic, resinuous reaction product ofa polyepoxide and a primary or secondary amine, one or more organo coupling agents and one or more cationic or non-ionic lubricants.
COMPONENTS Steering wheel Yano, I. and Kitakoga, H. (Mitsubishi Denki Kabushiki Kaisha, Japan) US Pat 4633 734(6January 1987) In the steering wheel claimed, the rim comprises a lightweight core surrounded by unidirectional FRP, with the metal spoke connecting the rim to the central bossvia alayer of unidirectional FRP. Structural component for transmitting torque Brunsch, K., Sappl, P. and Bongers, B. (Messerschmitt-BOlkow-Blohm GmbH, Munich, FRG) US Pat 4 634 399 (6 January 1987) An FRP structural component, which is used to join two ends in a safety steering system with a bent steering column, is described. The component comprises a coil-shaped body formed of FRP lattice rods wound at 70-85 o to the axis of the body. Epoxy steering wheel Overcashier, R.H. and Farris, R.D. (Shell Oil Company, Houston, TX, USA) US Pat 4 635 500 (13January 1987) A sealed, partially deflated, flexible tubular member is positioned so that it runs around the wheel rim, up a first spoke, round a central hub and back down the first spoke, around the rim to a second spoke where is configured as in the first spoke, and around the rest of the rim to join with the first end. The tube is covered with a woven tube of fibre reinforcement in a thermosetting resin, which bonds the steering wheel into a solid mass. Staple catting for fiber reinforcement material Boggs, B.A. (Allied Corporation, Morris Township, N J, USA) US Pat 4 637 286 (20January 1987) Elongated material is cut into predetermined lengths between two rolls in an apparatus. The apparatus contains a cutting roll with radially extending cutting blades and projections and a second roll with an elastic surface that engages with the projections on the first roll, thereby causing the two rolls to rotate in opposite directions. Boards and panels Harper, S. and Hiscock, D.G. (Cape Building Products Limited, Uxbridge, UK) USPat 4 637860 (20 January 1987) Non-asbestos corrugated sheet for external use is
82
Finish composition for polyester fiber for rubber reinforcement Murase, S. (Unitika Limited, Osaka, Japan) US Pat 4 637 957 (20January 1987) Adhesion between polyester yarn and rubber is s aid to b e improved when the yarn is treated with a lubricant and 3-30 weight % of the initial condensation product and its intermediate of a melamine resin. Fibrous armor material
Epel, J.N. (Budd Company, Troy, MI, USA) US Pat 4 639 387 (27January 1987) Impact force is absorbed longitudinally along the axes of fibres in an FRP armour material in which the adhesion of the resin to the fibres is less than the cohesive strength of the fibres to afford relative movement of the fibres to the matrix. The fibres are arranged in thin layers where the fibre axes are mostly parallel to one another, with a few cross-over points where some of the fibres are oriented at an angle to the rest. Fiber wound plastic beverage can Schmeal, W.R., Singhal, S.N. and Lo, ICH. (Shell Oil Company, Houston, TX, USA) US Pat 4 640 853 (3 February 1987) The can, which will withstand pressure from carbonated beverages and has acceptable swelling resistance, has at least two fibre layers (polyethylene terephthalate) wound on a thermoplastic core (polypropylene) with adhesive layers between the fibre layers and the core, and between the fibre layers themselves. A barrier layer is also provided. BN coating of ceramic fibers for ceramic fiber composites Rice, R.W. (The Secretary of the Navy, Washington, DC, USA) US Pat 4 642 271 (10 February 1987) A ceramic/ceramic composite material has a coating of boron nitride on the reinforcing fibres. Fiber-reinforced lightweight alloy piston for an internal-combustion engine and associated method Ban, IC (Honda Giken Kogyo Kabushiki Kaisha, Tokyo, Japan) US Pat 4 643 078 (17 February 1987) A piston body of lightweight alloy and provided with a compression ring groove has reinforcement means situated at the inner surface of the groove comprising alumina fibres having a 0/aAI20s crystalline structure with a specific gravity
Backup material for small bore drilling Eidal, R.C. (Control Data Corporation, Minneapolis, MN, USA) US Pat 4 643 936 (17 February 1987) A work sheet for use during drilling, formed of material comprising glass/polymide, Kevlar/ polymide or glass/modified epoxy BT, is backed up with a sheet which comprises a core and layers of polyimide, fluorocarbon or high temperature polycarbonate fixed to opposite sides of the core.
Fiber reinforced resin coated optical fiber and proeess for producing the same Yoshihara, M. et al (Nitto Electric Industrial Co Ltd, Osaka, Japan) US Pat 4 645 297 (24 February 1987) Optical fibres are coated with a cured layer comprising continuous filament reinforcing material, a specified isocyanurate, a modified phenol novolak-based epoxy resin and a polymerization initiator. Foam laminate structures Baitinger, S.A., Brothers, R.C. and Dishart, K.T. (E.I. Du Pont de Nemours and Company Inc, Wilmington, D E, USA) US Pat 4 645 710(24 February 1987) Facer material is bonded to either side of a polyurethane or polyisocyanurate resin core by an adhesive containing acid, hydroxyl, amide or amine groups capable of reacting with the core material. The peel strength of the bond between the core and face material is about 2.72 kg m-]. Carbon fibre gun barrel Gladstone, D.H., Langlois, R. and Robertson, W.J. (Her Majesty the Queen in the right of Canada) US Pat 4 646 615 (3 March 1987) Epoxy resin-treated multi-filament carbon fibre is wound on a mandrel to create initially a layer configured to resist hot gas erosion on firing of the gun, and subsequently superimposed layers of helically wound material to provide a hoop stress equivalent to that of a steel barrel. Metal to composite tubular jolnts Lundy, B.T. (Hercules lncorported, Wilmington, DE, USA) US Pat 4 647 078 (3 March 1987) The joint comprises an inner sleeve for transferring mechanical loads, a composite tube formed from fibre layers mounted over the inner tube, an axial load transfer assembly in the form of an annular segmented collar and several elastometric layers - - one between the inner surface of the inner sleeve and the composite tube; a shear layer between the inner sleeve and the composite tube; and another shear layer between the composite tube and the segmented collar. The joint also includes a coupling means for use with a tube having complementary coupling means and a seal to prevent leakage of fluid through the joint.
COMPOSITES. JANUARY 1988