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Micropleated composite fibrous product
loading conditions to which it is •subjected. The composite material can be applied to sandwiched cores, structural profiles or shell structures, for example.
may be carbon or asbestos fibres whilst the matrix may be lea'd, a lead/tin alloy or silver. The bearing material may be provided with a steel backing strip to form a thin wall bearing component.
Composite soft magnetic materials Denes, P. A. US Pat 3 775 328 (27Nov 1973) A composite soft magnetic material containing at least two distingu.ishable magnetic materials in particulate form; specifically ferromagnetic particles and ferrimagnetic particles coated with a layer of ferromagnetic material.
Manufacture of composites containing a thermally shaped inorganic fiber form Lawrence, G. D. and Ott, J. J. (Dow Chemical Co) US Pat 3 775 530 (27Nov 1973) The present invention relates to a method of shaping amorphous fibres about one or more transverse axes between the ends of each fibre comprising forming the fibres into a shape and then heating the shaped fibres at a temperature of about 93°C (200°F) to about 649°C (1200°F) for a time of about I to about 24h. Upon cooling, the so-processed fibres retain substantially the same formed and heater fibre configuration. The so-shaped fibres can be employed for uses such as reinforcement of cast metal, ceramic and plastic shapes.
Method for producing continuous lengths of metal matrix fiber reinforced composites Williford, J. F. and Pilger, J. P. (Battelle Development Corp) US Pat 3 776 297(4 Dec 1973) A method for producing metal matrix fibre reinforced tape by directing a plurality of arranged fibres through a stable meniscus of molten metal, and effecting rapid solidification of the molten metal through the use of moving heat extracting members, so as to retain the desired mechanical properties of the composite material by minimising the exposure of the fibres to high temperature molten metal.
Production of composite materials Barlowl J. (GKN Group Services Ltd) US Pat 3 776 612 (4 Dec 1973) A bearing material comprising a metal matrix reirfforced with less than 50% by volume fibres is disclosed. Prefer, ably the fibres comprise 10 to 25% by volume of the bearing material and
280
Method of producing reinforced thermoplastic materials Davis, J. H. and Hendy, B. N. (Imperial Chemical Industries Ltd) USPat 3 776 751 (4Dec1973) Depositing a copolymer of acrylonitrile and aromatic olefin from an emulsion onto a glass-fibre reinforcing material, separating and drying the coated reinforcing material.
Aminated carbon fibers Goan, J. C. (Great Lakes Carbon Corporation) US Pat 3 776 829 (4 Dec 1973) Carbon fibres are reacted with ammonia plasma to form amino groups on the surface, useful in preparing carbon fibre-epoxy resin composite.
Nitride-strengtbened stainless steel composite Kindlimann, L. E. and Green, A. B. (Alleghen¥ Ludlum Industries Inc) US Pat 3 778 235 (11 Dec 1973) This describes composite members containing a plurality of layers at least one of which is nitride strengthened stainless steel and a pressure bonding method for producing them.
Manufacturing composite articles Nicholas, M. G. and MacPahil, I. (UKAEA) US Pat 3 778 261 (11 Dec 1973) A method of manufacturing a composite article comprises forming a metal matrix which includes a suitable carbide forming constituent, contacting the matrix with a carbonaceous material to be incorporated in the matrix, and heating the matrix to a predetermined temperature below the melting point of the matrix for a sufficient length of time to induce the carbide forming constituent to diffuse through the matrix to the interface between the carbonaceous material and the matrix and react with the carbonaceous material to form a bonding carbide layer between the matrix and the carbonaceous material.
Mieropleated composite fibrous product Rasmussen, O-B. US Pat 3 778 333 (11 Dec 1973) Filaments, fibres and fibre-like structures consisting of thin ribbon-like layers formed of different polymeric materials and transversely pleated with the spacing between adjacent pleasts being up to about 1O0/~m. To make an intermediate product, a sandwichlike structure having microscopically thin layers is simultaneously compressed in one direction the plane of the layers and expanded perpendicularly thereto, also in the plane of the layers under conditions at which the materials of the layers are in states of different fludity. The intermediate product is subjected to splitting action to form the final product. High modulus organis fiber layers
alternating with inorganic fiber layers in a resin matrix Sturgeon, D. L. G. (E. I. du Pont de Nemours & Co) US Pat 3 778 334 (11 Dec 19 73) Fibrous reinforced resin composites comprising high modulus organic fibers and inorganic fibrous materials in specified proportions demonstrate surprising increases in a structural property above thosepredicted by the rule of mixtures.
Reinforced elastomer compositions Fujimoto, K. et al (Bridgestone Tire Co Ltd) USPat 3 778 396 (11 Dec 1973) A new rubber composition comprising rubber reinforced by distributing therein carbon fibres, carbon black and softener in combination respectively in a particular amount.
Flame-proof glass-fiber-reinforced polyamide containing phosphorus Hild, W. et al (Badische Anilin-SodaFabrik AG) US Pat 3 778 407 (11 Dec 1973) Self-extinguishing glass-fibre-reinforced moulding composition based on glassfibre-reinforced polyamide containing red phosphorus as a flame retardant.
Process for making a V3Ga supercon., ductive composite structure Kono, A. and Nozawa, Y. (Ulvac Corp and the Research Development Corp of Japan) US Pat 3 778 894 (i8 Dec 1973) A process for making a V3Ga superconductive composite structure where-
COMPOSITES. NOVEMBER 1974
may be carbon or asbestos fibres whilst the matrix may be lea'd, a lead/tin alloy or silver. The bearing material may be provided with a steel backing strip to form a thin wall bearing component.
Composite soft magnetic materials Denes, P. A. US Pat 3 775 328 (27Nov 1973) A composite soft magnetic material containing at least two distingu.ishable magnetic materials in particulate form; specifically ferromagnetic particles and ferrimagnetic particles coated with a layer of ferromagnetic material.
Manufacture of composites containing a thermally shaped inorganic fiber form Lawrence, G. D. and Ott, J. J. (Dow Chemical Co) US Pat 3 775 530 (27Nov 1973) The present invention relates to a method of shaping amorphous fibres about one or more transverse axes between the ends of each fibre comprising forming the fibres into a shape and then heating the shaped fibres at a temperature of about 93°C (200°F) to about 649°C (1200°F) for a time of about I to about 24h. Upon cooling, the so-processed fibres retain substantially the same formed and heater fibre configuration. The so-shaped fibres can be employed for uses such as reinforcement of cast metal, ceramic and plastic shapes.
Method for producing continuous lengths of metal matrix fiber reinforced composites Williford, J. F. and Pilger, J. P. (Battelle Development Corp) US Pat 3 776 297(4 Dec 1973) A method for producing metal matrix fibre reinforced tape by directing a plurality of arranged fibres through a stable meniscus of molten metal, and effecting rapid solidification of the molten metal through the use of moving heat extracting members, so as to retain the desired mechanical properties of the composite material by minimising the exposure of the fibres to high temperature molten metal.
Production of composite materials Barlowl J. (GKN Group Services Ltd) US Pat 3 776 612 (4 Dec 1973) A bearing material comprising a metal matrix reirfforced with less than 50% by volume fibres is disclosed. Prefer, ably the fibres comprise 10 to 25% by volume of the bearing material and
280
Method of producing reinforced thermoplastic materials Davis, J. H. and Hendy, B. N. (Imperial Chemical Industries Ltd) USPat 3 776 751 (4Dec1973) Depositing a copolymer of acrylonitrile and aromatic olefin from an emulsion onto a glass-fibre reinforcing material, separating and drying the coated reinforcing material.
Aminated carbon fibers Goan, J. C. (Great Lakes Carbon Corporation) US Pat 3 776 829 (4 Dec 1973) Carbon fibres are reacted with ammonia plasma to form amino groups on the surface, useful in preparing carbon fibre-epoxy resin composite.
Nitride-strengtbened stainless steel composite Kindlimann, L. E. and Green, A. B. (Alleghen¥ Ludlum Industries Inc) US Pat 3 778 235 (11 Dec 1973) This describes composite members containing a plurality of layers at least one of which is nitride strengthened stainless steel and a pressure bonding method for producing them.
Manufacturing composite articles Nicholas, M. G. and MacPahil, I. (UKAEA) US Pat 3 778 261 (11 Dec 1973) A method of manufacturing a composite article comprises forming a metal matrix which includes a suitable carbide forming constituent, contacting the matrix with a carbonaceous material to be incorporated in the matrix, and heating the matrix to a predetermined temperature below the melting point of the matrix for a sufficient length of time to induce the carbide forming constituent to diffuse through the matrix to the interface between the carbonaceous material and the matrix and react with the carbonaceous material to form a bonding carbide layer between the matrix and the carbonaceous material.
Mieropleated composite fibrous product Rasmussen, O-B. US Pat 3 778 333 (11 Dec 1973) Filaments, fibres and fibre-like structures consisting of thin ribbon-like layers formed of different polymeric materials and transversely pleated with the spacing between adjacent pleasts being up to about 1O0/~m. To make an intermediate product, a sandwichlike structure having microscopically thin layers is simultaneously compressed in one direction the plane of the layers and expanded perpendicularly thereto, also in the plane of the layers under conditions at which the materials of the layers are in states of different fludity. The intermediate product is subjected to splitting action to form the final product. High modulus organis fiber layers
alternating with inorganic fiber layers in a resin matrix Sturgeon, D. L. G. (E. I. du Pont de Nemours & Co) US Pat 3 778 334 (11 Dec 19 73) Fibrous reinforced resin composites comprising high modulus organic fibers and inorganic fibrous materials in specified proportions demonstrate surprising increases in a structural property above thosepredicted by the rule of mixtures.
Reinforced elastomer compositions Fujimoto, K. et al (Bridgestone Tire Co Ltd) USPat 3 778 396 (11 Dec 1973) A new rubber composition comprising rubber reinforced by distributing therein carbon fibres, carbon black and softener in combination respectively in a particular amount.
Flame-proof glass-fiber-reinforced polyamide containing phosphorus Hild, W. et al (Badische Anilin-SodaFabrik AG) US Pat 3 778 407 (11 Dec 1973) Self-extinguishing glass-fibre-reinforced moulding composition based on glassfibre-reinforced polyamide containing red phosphorus as a flame retardant.
Process for making a V3Ga supercon., ductive composite structure Kono, A. and Nozawa, Y. (Ulvac Corp and the Research Development Corp of Japan) US Pat 3 778 894 (i8 Dec 1973) A process for making a V3Ga superconductive composite structure where-
COMPOSITES. NOVEMBER 1974