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Chemically treated fibres
applications as air blast circuit breakers blast tubes and arc explosion pots, where good tensile, compressive and flexural properties are required.
Improvements in or relating to processes for producing fibre-reinforced sintered metals
is cooled under pressure between rollers. High resistance to flow at elevated temperatures is achieved. Fillers can be added to the copolymer to improve properties, for example, electrical conductivity or to make resistance welding possible. The laminate has a band width of 100°C at 100cps and 50°C at 1000cps.
Calow, C, A. UK Patent Specification,
time. The fibres are chemically treated with an oxidant liquid or vapour, for example introbenzene or benzene sulphonyl chloride, below the decomposition temperature of the fibres. After the treatment, the fibres can be heated at a rate of 250°C per hour up to 1000°C. Subsequent heating to higher temperatures produces fibres of greater strength and stiffness.
1,1 72,855 (3 December 1969) The object of the invention is to produce a fibre-reinforced sintered metal composite of adequate strength for subsequent processing, not dependant on a solidified plastic medium. Metallic fibres and powder are dispersed in a first plastic mix, metallic powder also being dispersed in a second mix. Extrusion of these mixes simultaneously aligns the fibres and sheaths the first mix with a coating of the second. The extrusion is treated to gell, dried and heated to remove the plastic media, and finally to loosesinter the metal powder. Hot pressing or hot rolling can then be carried out. Metal powders that may be used include nickel, iron, copper and nickelchromium alloys and fibres used include silicon nitride, silica and alumina.
Thickened polymerizarle unsaturated resin compositions and fibrous substances impregnated therewith
Fire
Freeman Chemical Corporation UK
pipes
Patent Specification, January 1970]
Mancar-Trust UK Patent Specification,
1,177,746 (14
A polyhydric alcohol and an alkaline earth oxide are added to an unsaturated polyester resin. This mixture remains fluid long enough to allow the impregnation of fibrous reinforcing materials. It becomes thickened, without curing, and dry to the touch, while remaining polymerizable. The reinforcement for impregnation mentioned is woven glass fibre fabric. A catalyst for initiating polymerization on heating is also incorporated in the mixture.
Filamentary reinforcing of rubbers and synthetic elastomers
Goerden, L., Grunewald, R. and Krosch, J. UK Patent Specification,
UK Patent Specification, 1,173,197 (3 December 1969)
1,1 79,043 (28 January 1970]
Corporation
The adhesion of filaments of linear polyester, particularly polyethylene terephthalate, to a rubber or synthetic elastomer matrix is achieved. The filaments, with high initial modulus, high tensile strength and satisfactory bending properties, can be bonded when they are helically wound with a hydrophilic multifilament yarn, preferably composed of natural or regenerated cellulose. The filament reinforced rubbers are particularly suitable for conveyor belts and vehicle tyres.
Vibration damping laminated systems
Glass fibres are sandwiched between two covering foils, which are coated with a polyester resin. The composite is both kneaded and calendered to achieve impregnation of the glass fibres and to give the plate the desired configuration of surface profile. Three patterns of calender rollers are described. The system of rollers, each being individually driven, prevents the foil from being stretched and torn.
Chemically treated fibres Gresham, H. E., Hall, D. W., Hannah, C. G., Phillips, D. J. and Hewitt, J. D.
UK Patent Specification, (17 December 1969]
1,179,791
Two identical sheets of metal are bonded to a copolymer interlayer, overall thickness of the laminate being from 1 to 6 millimetres. The laminate
fibre-reinforced
A glass fibre-reinforced plastic pipe with an outer layer resistant to temperatures exceeding 300°C is described. The protective sheath, in various configurations may use magnesia, aluminium foil and filament wound glass fibre fabric reinforcement. The pipe can withstand prolonged exposure to heat, and the elimination of rubber seals from the couplings, which can also be fireproofed, removes any point of weakness.
Glass fibre-reinforced products
elastomer
Owens-Corning Fiberglas Corporation
UK Patent Specification, (28 January 1970]
1,179,380
Uniform impregnation of glass fibre bundles with an elastomer matrix has proved difficult. Here the impregnation is applied during the forming of the fibres, before being gathered into strand or yarn. This initial coating is less than 8% of the dry solids by weight. A further impregnation operation to sheath the processed bundle of glass fibres is applied, after which the final product may be moulded. Rubber belts and tyres are the main areas of application.
1,174,868
Farbwerke Hoechst Aktiengesellschaft
UK Patent Specification, (28 January 1970)
glass
1,1 78,852 (21 January 1970]
Process for the production of resin impregnated glass fibre materials
Celanese
resistant
Pre-heating of synthetic polyacrylonitrile fibres to align the carbon atoms produces carbon fibre of improved strength and modulus. However, the heat treatment requires a slow rate of heating and the present invention aims to reduce the process
Malleable metal-thermoplastic material laminates Rieke, J. K., Hart, G. M. and Stroiwas,
E. UK Patent Specification, 1,178,474 (21 January 1970) The parameters of a laminate consisting of two metal plates bonded
COMPOSITES June 1970
251
Improvements in or relating to processes for producing fibre-reinforced sintered metals
is cooled under pressure between rollers. High resistance to flow at elevated temperatures is achieved. Fillers can be added to the copolymer to improve properties, for example, electrical conductivity or to make resistance welding possible. The laminate has a band width of 100°C at 100cps and 50°C at 1000cps.
Calow, C, A. UK Patent Specification,
time. The fibres are chemically treated with an oxidant liquid or vapour, for example introbenzene or benzene sulphonyl chloride, below the decomposition temperature of the fibres. After the treatment, the fibres can be heated at a rate of 250°C per hour up to 1000°C. Subsequent heating to higher temperatures produces fibres of greater strength and stiffness.
1,1 72,855 (3 December 1969) The object of the invention is to produce a fibre-reinforced sintered metal composite of adequate strength for subsequent processing, not dependant on a solidified plastic medium. Metallic fibres and powder are dispersed in a first plastic mix, metallic powder also being dispersed in a second mix. Extrusion of these mixes simultaneously aligns the fibres and sheaths the first mix with a coating of the second. The extrusion is treated to gell, dried and heated to remove the plastic media, and finally to loosesinter the metal powder. Hot pressing or hot rolling can then be carried out. Metal powders that may be used include nickel, iron, copper and nickelchromium alloys and fibres used include silicon nitride, silica and alumina.
Thickened polymerizarle unsaturated resin compositions and fibrous substances impregnated therewith
Fire
Freeman Chemical Corporation UK
pipes
Patent Specification, January 1970]
Mancar-Trust UK Patent Specification,
1,177,746 (14
A polyhydric alcohol and an alkaline earth oxide are added to an unsaturated polyester resin. This mixture remains fluid long enough to allow the impregnation of fibrous reinforcing materials. It becomes thickened, without curing, and dry to the touch, while remaining polymerizable. The reinforcement for impregnation mentioned is woven glass fibre fabric. A catalyst for initiating polymerization on heating is also incorporated in the mixture.
Filamentary reinforcing of rubbers and synthetic elastomers
Goerden, L., Grunewald, R. and Krosch, J. UK Patent Specification,
UK Patent Specification, 1,173,197 (3 December 1969)
1,1 79,043 (28 January 1970]
Corporation
The adhesion of filaments of linear polyester, particularly polyethylene terephthalate, to a rubber or synthetic elastomer matrix is achieved. The filaments, with high initial modulus, high tensile strength and satisfactory bending properties, can be bonded when they are helically wound with a hydrophilic multifilament yarn, preferably composed of natural or regenerated cellulose. The filament reinforced rubbers are particularly suitable for conveyor belts and vehicle tyres.
Vibration damping laminated systems
Glass fibres are sandwiched between two covering foils, which are coated with a polyester resin. The composite is both kneaded and calendered to achieve impregnation of the glass fibres and to give the plate the desired configuration of surface profile. Three patterns of calender rollers are described. The system of rollers, each being individually driven, prevents the foil from being stretched and torn.
Chemically treated fibres Gresham, H. E., Hall, D. W., Hannah, C. G., Phillips, D. J. and Hewitt, J. D.
UK Patent Specification, (17 December 1969]
1,179,791
Two identical sheets of metal are bonded to a copolymer interlayer, overall thickness of the laminate being from 1 to 6 millimetres. The laminate
fibre-reinforced
A glass fibre-reinforced plastic pipe with an outer layer resistant to temperatures exceeding 300°C is described. The protective sheath, in various configurations may use magnesia, aluminium foil and filament wound glass fibre fabric reinforcement. The pipe can withstand prolonged exposure to heat, and the elimination of rubber seals from the couplings, which can also be fireproofed, removes any point of weakness.
Glass fibre-reinforced products
elastomer
Owens-Corning Fiberglas Corporation
UK Patent Specification, (28 January 1970]
1,179,380
Uniform impregnation of glass fibre bundles with an elastomer matrix has proved difficult. Here the impregnation is applied during the forming of the fibres, before being gathered into strand or yarn. This initial coating is less than 8% of the dry solids by weight. A further impregnation operation to sheath the processed bundle of glass fibres is applied, after which the final product may be moulded. Rubber belts and tyres are the main areas of application.
1,174,868
Farbwerke Hoechst Aktiengesellschaft
UK Patent Specification, (28 January 1970)
glass
1,1 78,852 (21 January 1970]
Process for the production of resin impregnated glass fibre materials
Celanese
resistant
Pre-heating of synthetic polyacrylonitrile fibres to align the carbon atoms produces carbon fibre of improved strength and modulus. However, the heat treatment requires a slow rate of heating and the present invention aims to reduce the process
Malleable metal-thermoplastic material laminates Rieke, J. K., Hart, G. M. and Stroiwas,
E. UK Patent Specification, 1,178,474 (21 January 1970) The parameters of a laminate consisting of two metal plates bonded
COMPOSITES June 1970
251