- Email: [email protected]
Inextensible filamentary structures and fabrics woven therefrom
Method of making a thermal, shock resistant beryllium oxide composite
Nishigasi, S., Kobayashi, K. and Nagoya, H. M. (NGK Insulator Ltd) US Patent 3564068 (16 February 1971) A method is described for preparing a beryllium oxide composite having a multiphase structure, an oxide polycrystalline and non-oxide crystal phase with gaps between phases or each oxide polycrystalline phase. This is accomplished by shaping a mixture of 0.5-15% of a high melting point carbide, bromide or silicide with heryllium and firing at 1700"C. Inextensible filamentary structures fabrics woven therefrom
and
Nicely, D. C. and Davis, S. J. (Monsanto Co) US Patent 3565 127 (23 February 1971) Strands of brittle highly inextensible filaments are collimated into bundles and a wrapped or braided covering applied to form a composite yarn structure of sufficient flexibility to be woven as the warp of a fabric. T h e fill fabric is any conventional fibrous material. Inextensible filaments include boron, boron carbide, silicon, silicon carbide, carbon, quartz and similar refractory materials characterized by high strength and brittleness. Process for preparing reinforced resinous structures
impregnated tape-like filaments on to a non-cylindrical surface and comprises a cutter for splitting the tape endwise into many filaments together with a take-up device for each filament. This process reduces the shingling effect inherent in tape winding on a curved surface. Reinforcement form for use in structural and ablative composites
Lazar, J. L. and Winter, W. E ( T R W Inc) US Patent 3 565 740 (23 Febrlmry 1971) A reinforcement is described where the major fibres are arranged in a general sine-wave form extending longitudinally and having overlapping amplitudes and uniform periods. Wale fibres extend parallel to these main fibres and tie fibres form a tape which has been used in the preparation of improved structural and ablative composites. Continuous carbon filament production
Townsend, B. A. (Courtaulds Ltd) US Patent 3 567 380 (2 March 1971) Organic filaments, such as untreated or heat-treated polyacrylonitrile, are given a series of passes through at least one heat zone. The temperature increases with the number of passes. while the direction of travel of the material is at right angles to the direction of increasing temperature. Composite materials
I,ubowitz, H. R. ( T R W Inc) US Patent 3 565 549 (23 February 1971) Reference laminates of improved thermal stability are prepared by impregnating glass fibres with a polyimide precursor followed by subjection to heat, thereby yielding a cured article. Precursors are obtained for co-reacting a polyamine and a polyanhydride; solution impregnation is followed by heating at 260°C to convert these materials to a prepolymer which is then cured at 350°C and 1000 lbf/in'.
Yoblin, J. A. (Whittaker Corp) US Patent 3 567 407 (2 March 1971) A composite is formed from several filamentary fibres each coated with a protective cladding, the fibres being aligned, bundled in an extrusion canister and co-extruded to form a monolithic structure in which the cladding forms a continuous honeycomb-type matrix. The fibres are chosen for their high strength, the protective cladding for its insulating properties.
Coated filaments
Method for producing plastic impregtinted eonereae
Morelock, C. R. (General Electrical Co) US Patent 3 565 683 (23 February 1971) A boron-carbon coating is deposited on the surface of an electrically heated surface of a pyrolytic carbon coated fused silica or quartz fibre which is passed through a liquid, thermally decomposable boron compound, dissolved in an organic solvent. Heating results in solvent vapour and boron trichloride covering the filaments which in turn leads to the deposition of a boron-carbon coating. Filament winding
Golladay, A. D. and Moran, K. E. (Hercules Inc) US Patent 3 565 726 (23 February 1971) This invention describes winding pre-
Steinberg, M. and Kukacka, 1.. E. (USAEC) US Patent 3567496 (2 March 1971) T h e physical properties of concrete bodies are improved by impregnating with a mixture of monomer and polymerization catalyst followed by thermo-catalytically polymerizing the monomer in situ. Tack-free impregnated glass fibre reinforcement for elastomeric materials
Janatos, N. S. (Owens-Coming Fibreglass Corp) US Patent 3567 671 (2 March 1971) Bundles or single glass fibres are treated with a mixture of resorcinolaldehyde resin, butadiene-styrenevinyl pyridene latex, a carboxylated
SRR latex, acrylic resin and an incompatible wax composition. T h e resultant fibres are tackless but exhibit good bonding when dispersed in elastomeric composites. High strength metal filaments and the process and apparatus for forming the milne
Schladitz, H. J. u s Patent 3570827 (16 March 1971) Metal filaments are formed from the gas phase decomposition of metal carbonyls. T h e apparatus includes a carbonyl discharge device, a heated temperature gradient surface reaction zone and means for creating a magnetic field to stabilize the hair-like fibres as they are formed. Method of fabricating a carbon fibre reinforced composite
Raymond, V. S. (Union Carbide Corp) US Patent 3 571 90l (23 March 1971) A light-weight composite consists of metal- or alloy-coated carbon fibres bonded together by an aluminiumhased matrix. The coating may be any one from the group consisting of silver- and silver-aluminium-based alloys. The preferred process is to contact silver-coated carbon fibre with an aluminium base followed by hot pressing at the melting point of aluminium to surround the metal coating. These composites have high strength and modulus of elasticity and find application in aero- and hydrospace systems. Threaded filament wound pipe and its method of manufacture
McLarty, J. L. (Universal Oil Products) US Patent 3 572 392 (23 March 1971) This improvement consists of helically winding resin-impregnated glass filaments on to a mandrel knurled at the ends in the form of helical threads. T h e helical winding pitch is greater than the thread pitch, resulting in the filaments deviating in a radial disposition with respect to the pipe, thus forming both interior and exterior pipe threads at the end of the finished pipe. Glass compositions with a high modulus of elasticity
Bacon, J. F. (United Aircraft Corp) US Patent 3 573 078 (30 March 1971) Glass compositions are cited containing silica, alumina and magnesia together with an uncommon oxide of lanthanum, cer]a and yttria. These provide a non-toxic glass capable of yielding fibres having high elastic modulus. Fibrous carbon or graphite products
Lambden, F. (USAEC) US Patent 3 573 086 (30 March 1971) A high strength ablation-resistant composite is formed from carbon fibre
COMPOSITES January[February 1972
45
Nishigasi, S., Kobayashi, K. and Nagoya, H. M. (NGK Insulator Ltd) US Patent 3564068 (16 February 1971) A method is described for preparing a beryllium oxide composite having a multiphase structure, an oxide polycrystalline and non-oxide crystal phase with gaps between phases or each oxide polycrystalline phase. This is accomplished by shaping a mixture of 0.5-15% of a high melting point carbide, bromide or silicide with heryllium and firing at 1700"C. Inextensible filamentary structures fabrics woven therefrom
and
Nicely, D. C. and Davis, S. J. (Monsanto Co) US Patent 3565 127 (23 February 1971) Strands of brittle highly inextensible filaments are collimated into bundles and a wrapped or braided covering applied to form a composite yarn structure of sufficient flexibility to be woven as the warp of a fabric. T h e fill fabric is any conventional fibrous material. Inextensible filaments include boron, boron carbide, silicon, silicon carbide, carbon, quartz and similar refractory materials characterized by high strength and brittleness. Process for preparing reinforced resinous structures
impregnated tape-like filaments on to a non-cylindrical surface and comprises a cutter for splitting the tape endwise into many filaments together with a take-up device for each filament. This process reduces the shingling effect inherent in tape winding on a curved surface. Reinforcement form for use in structural and ablative composites
Lazar, J. L. and Winter, W. E ( T R W Inc) US Patent 3 565 740 (23 Febrlmry 1971) A reinforcement is described where the major fibres are arranged in a general sine-wave form extending longitudinally and having overlapping amplitudes and uniform periods. Wale fibres extend parallel to these main fibres and tie fibres form a tape which has been used in the preparation of improved structural and ablative composites. Continuous carbon filament production
Townsend, B. A. (Courtaulds Ltd) US Patent 3 567 380 (2 March 1971) Organic filaments, such as untreated or heat-treated polyacrylonitrile, are given a series of passes through at least one heat zone. The temperature increases with the number of passes. while the direction of travel of the material is at right angles to the direction of increasing temperature. Composite materials
I,ubowitz, H. R. ( T R W Inc) US Patent 3 565 549 (23 February 1971) Reference laminates of improved thermal stability are prepared by impregnating glass fibres with a polyimide precursor followed by subjection to heat, thereby yielding a cured article. Precursors are obtained for co-reacting a polyamine and a polyanhydride; solution impregnation is followed by heating at 260°C to convert these materials to a prepolymer which is then cured at 350°C and 1000 lbf/in'.
Yoblin, J. A. (Whittaker Corp) US Patent 3 567 407 (2 March 1971) A composite is formed from several filamentary fibres each coated with a protective cladding, the fibres being aligned, bundled in an extrusion canister and co-extruded to form a monolithic structure in which the cladding forms a continuous honeycomb-type matrix. The fibres are chosen for their high strength, the protective cladding for its insulating properties.
Coated filaments
Method for producing plastic impregtinted eonereae
Morelock, C. R. (General Electrical Co) US Patent 3 565 683 (23 February 1971) A boron-carbon coating is deposited on the surface of an electrically heated surface of a pyrolytic carbon coated fused silica or quartz fibre which is passed through a liquid, thermally decomposable boron compound, dissolved in an organic solvent. Heating results in solvent vapour and boron trichloride covering the filaments which in turn leads to the deposition of a boron-carbon coating. Filament winding
Golladay, A. D. and Moran, K. E. (Hercules Inc) US Patent 3 565 726 (23 February 1971) This invention describes winding pre-
Steinberg, M. and Kukacka, 1.. E. (USAEC) US Patent 3567496 (2 March 1971) T h e physical properties of concrete bodies are improved by impregnating with a mixture of monomer and polymerization catalyst followed by thermo-catalytically polymerizing the monomer in situ. Tack-free impregnated glass fibre reinforcement for elastomeric materials
Janatos, N. S. (Owens-Coming Fibreglass Corp) US Patent 3567 671 (2 March 1971) Bundles or single glass fibres are treated with a mixture of resorcinolaldehyde resin, butadiene-styrenevinyl pyridene latex, a carboxylated
SRR latex, acrylic resin and an incompatible wax composition. T h e resultant fibres are tackless but exhibit good bonding when dispersed in elastomeric composites. High strength metal filaments and the process and apparatus for forming the milne
Schladitz, H. J. u s Patent 3570827 (16 March 1971) Metal filaments are formed from the gas phase decomposition of metal carbonyls. T h e apparatus includes a carbonyl discharge device, a heated temperature gradient surface reaction zone and means for creating a magnetic field to stabilize the hair-like fibres as they are formed. Method of fabricating a carbon fibre reinforced composite
Raymond, V. S. (Union Carbide Corp) US Patent 3 571 90l (23 March 1971) A light-weight composite consists of metal- or alloy-coated carbon fibres bonded together by an aluminiumhased matrix. The coating may be any one from the group consisting of silver- and silver-aluminium-based alloys. The preferred process is to contact silver-coated carbon fibre with an aluminium base followed by hot pressing at the melting point of aluminium to surround the metal coating. These composites have high strength and modulus of elasticity and find application in aero- and hydrospace systems. Threaded filament wound pipe and its method of manufacture
McLarty, J. L. (Universal Oil Products) US Patent 3 572 392 (23 March 1971) This improvement consists of helically winding resin-impregnated glass filaments on to a mandrel knurled at the ends in the form of helical threads. T h e helical winding pitch is greater than the thread pitch, resulting in the filaments deviating in a radial disposition with respect to the pipe, thus forming both interior and exterior pipe threads at the end of the finished pipe. Glass compositions with a high modulus of elasticity
Bacon, J. F. (United Aircraft Corp) US Patent 3 573 078 (30 March 1971) Glass compositions are cited containing silica, alumina and magnesia together with an uncommon oxide of lanthanum, cer]a and yttria. These provide a non-toxic glass capable of yielding fibres having high elastic modulus. Fibrous carbon or graphite products
Lambden, F. (USAEC) US Patent 3 573 086 (30 March 1971) A high strength ablation-resistant composite is formed from carbon fibre
COMPOSITES January[February 1972
45