Method for producing electrically-conductive elements
    13.
    发明授权
    Method for producing electrically-conductive elements 失效
    导电元件的制造方法

    公开(公告)号:US3269883A

    公开(公告)日:1966-08-30

    申请号:US8854261

    申请日:1961-02-10

    Abstract: Glass fibres are coated with a liquid composition containing electrically conductive particles, e.g. graphite and carbon black, and are then led into pressure contact with a heated surface and maintained in contact for a sufficient time to bond the particles to the fibres. The fibres may be passed through a colloidal dispersion of graphite particles in water to form a coating of the particles on the fibres and then heated by pressure contact with a hot surface to cause the particles to adhere to the fibres and the fibres to adhere to one another. Prior to coating with the electrically conductive particles the fibres may be coated with 0.5-15% by weight of a carbonizable or caramelizable material, e.g. a starch, a sugar such as glucose, sorbitol, glycerol or polyvinyl acetate, the heat treatment after application of the coating of electrically conductive particles serving to carbonize or caramelize the material and cause the particles to adhere to the fibres. As shown in Fig. 1, glass fibre strands 14 may be passed from creel 10 through the guide openings in guide structure 26 and central eyes 28 where they are formed into rovings, over roller 32 which dips into water, which may contain 2-5% by weight of an alcohol, e.g. ethyl alcohol, in pan 36, and through pan 38 which contains the particles of electrically-conductive material. The coated rovings then pass through openings of predetermined size in dies 58 to wipe off excess particles and fluid to maintain a uniform coating thickness and under a heated idler roller 60 and are then placed in pressure contact with a rotating drum 62 heated to a temperature up to 850 DEG F. to flatten the bundle of filaments into substantially parallel alignment and bond the conductive particles to the filaments and the filaments to one another prior to winding on take-up rollers 64. Several coatings of electrically-conductive particles may be applied. The electrical properties of the coated glass fibres may be improved by passing an electric current through them as they are heated to carbonize and bake the coating thereon.ALSO:Glass fibres are coated with a liquid composition containing electrically conductive particles of a metal or an organo metallic compound which decomposes on heating to form electrically-conductive metallic particles, and are then led into pressure contact with a heated surface and maintained in contact for a sufficient time to bond the particles to the fibres. Prior to coating with the electrically conductive particles the fibres may be coated with 0.5-15% by weight of a carbonizable or caramelizable material, e.g. a starch, a sugar such as glucose, sorbitol, glycerol or polyvinyl acetate, the heat treatment after application of the coating of electrically conductive particles serving to carbonize or caramelize the material and cause the particles to adhere to the fibres. As shown in Fig. 1, glass fibre strands 14 may be passed from creel 10 through the guide openings in guide structure 26 and central eyes 28 where they are formed into rovings, over roller 32 which dips into water, which may contain 2-5% by weight of an alcohol, e.g. ethyl alcohol, in pan 36, and through pan 38 which contains the particles of electrically-conductive material. The coated rovings then pass through openings of predetermined size in dies 58 to wipe off excess particles and fluid to maintain a uniform coated thickness and under a heated idler roller 60 and are then placed in pressure contact with a rotating drum 62 heated to a temperature up to 850 DEG F. to flatten the bundle of filaments into substantially parallel alignment and bond the conductive particles to the filaments and the filaments to one another prior to winding on take-up rollers 64. Several coatings of electrically-conductive particles may be applied. The organo metallic compound may be an organic salt or alkyl compound of nickel, iron or zinc. The electrical properties of the coated glass fibres may be improved by passing an electric current through them as they are heated to carbonize and bake the coating thereon.

    Glass fibers treated for combination with elastomeric materials and method
    18.
    发明授权
    Glass fibers treated for combination with elastomeric materials and method 失效
    用弹性材料和方法结合处理的玻璃纤维

    公开(公告)号:US3391052A

    公开(公告)日:1968-07-02

    申请号:US40650164

    申请日:1964-10-26

    Inventor: ALFRED MARZOCCHI

    Abstract: Glass fibres to be used in a suitable form for subsequent combination with a matrix of elastomeric material to act as a reinforcing material, are coated either before or after forming them into an endless bundle with a composition containing an elastomer and overcoated with a lubricating material which will reduce the tendency of the fibres to seize during subsequent processing by winding, twisting, plying or weaving. The elastomeric composition which may be same as the elastomeric matrix may be natural rubber or a synthetic rubber produced from neoprene, butadiene, chloroprene, isoprene or copolymers thereof with acrylonitrile or styrene and may also contain magnesium or zinc oxide, carbon black, a trialkyl thiourea accelerator for neoprene, a diphenylamine acetone reaction product, stearic acid, dicumyl peroxide, toluene, a resorcinol-formaldehyde resin, formaldehyde, ammonium hydroxide or water. The lubricating material may be a carbohydrate e.g. corn or potato starch, dextrinized starch or a sugar, powdered polyethylene, glassfibres or synthetic resinous fibres milled to a powdered state, silica dust, graphite or carbon black. Prior to or simultaneously with the application of the elastomeric composition the fibres may be treated with an anchoring agent such as an organo silicon compound in the form of its silane, its hydrolysis product or its polymerization product in which the silane has 1-3 hydrolyzable groups and at least one organic group directly or indirectly attached to the silicon atom containing a nitrogen group in the form of a free amine or an unsaturated group or epoxy group, e.g. gamma-aminopropyltriethoxy silane, gamma-aminopropylvinyldiethoxy silane, gamma (triethoxysilylpropylamide) propylamine, N(gamma-tri ethoxysilylpropyl) propylamine, gamma (triethoxylsilylpropyloxy) propylamine, betaaminoallyltriethoxysilane, para-amino phenyl triethoxyl silane or aniline silane derivatives, the anchoring agent composition optionally containing glycerine, partially dextrinized starch, hydrogenated vegetable oil, a cationic wetting agent, a nonionic emulsifying agent, a polyester resin, polyvinyl alcohol, polyvinyl pyrrolidone, acetic acid and water. Alternatively the anchoring agent may be a Werner complex compound in which the carboxylato group coordinated with the trivalent chromium atom contains an amino or epoxy group. After application of the elastomeric composition and prior to the application of the lubricating material the fibres may be treated with an assimilation coating comprising an organic silicon compound or Werner complex in which the organic group attached to the silicon atom of the organo silicon compound and the carboxylate group attached to the chromium atom of the Werner complex compound contains an amino or epoxy group, an isocyanate, a phenolic end blocked isocyanate or ethylene dimethacrylate, adapted to subsequently blend the elastomeric composition with the elastomeric matrix forming material. After application the elastomeric coating may be left uncured or may be partially or completely cured. The lubricating material may be removed prior to incorporating the glass fibres in the elastomeric matrix by the action of a solvent or in the case of starch by means of an enzyme. As shown in Fig. 6 polyethylene in dry powder form may be sprinkled onto bundles of glass fibres 60 to which the elastomer composition has been applied by advancing them beneath a shaker 62 containing the powdered polyethylene.

    Neoprene-glass fiber structures and method for preparation
    20.
    发明授权
    Neoprene-glass fiber structures and method for preparation 失效
    氯丁橡胶玻璃纤维结构及其制备方法

    公开(公告)号:US3311528A

    公开(公告)日:1967-03-28

    申请号:US24234962

    申请日:1962-12-05

    Inventor: ALFRED MARZOCCHI

    Abstract: An elastomer is bonded to glass fibres through an anchoring agent that is a metal oxide, can bond to the glass-fibre surfaces unde the action of heat and can act as a catalyst in the curing of the elastomeric material. Examples are magnesium oxide, zinc oxide and mixtures of these two. The anchoring agent is incorporated into a matrix of elastomeric material which is in an uncured or partly cured condition, the matrix is then applied to glass fibres and the combination is heated to a temperature of 350 DEG to 400 DEG F. to cure the elastomeric material. The elastomer is one which, at least before it is fully cured, contains olefinic groups or halogen substituents or both. Elastomers referred to are neoprene, chlorobutyl rubber and combinations of these with natural rubber compositions containing resinous acids. The term "glass fibres" includes continuous filaments formed by attenuation of molten streams of glass, staple fibres formed by attenuation of molten streams of glass by blasts of air or steam, strands, yarns and fabrics formed of such filaments or staple, and thin flexible glass flakes. The glass fibres to which the composition is applied may be bare or may be first coated with zinc oxide or magnesium oxide. They may be coated with compounds that yield zinc oxide or magnesium oxide on heating and then heated. The metal oxides can be applied from aqueous suspensions of the hydroxides or aqueous solutions of the chlorides, the pH being then lowered to deposit the hydroxide on the fibres, or an ammoniacal solution of the hydroxides can be deposited on the fibres. In either case, the deposit is heated to convert it to the oxide. The anchoring agent may be incorporated in a size, which is then applied to the glass fibres. A suitable size comprises partially dextrinized starch, hydrogenated soyabean oil, pelargonamide solubilized with acetic acid, an emulsifying agent and magnesium hydroxide. The product may take the form of a glass-fibre-reinforced elastomer, an elastomeric-coated glass-fibre fabric or a laminate.ALSO:An elastomer is bonded to glass fibres through an anchoring agent that is a metal oxide, can bond to the glass-fibre surfaces under the action of heat and can act as a catalyst in the curing of the elastomeric material. Examples are magnesium oxide, zinc oxide and mixtures of these two The anchoring agent is incorporated into a matrix of elastomeric material which is in an uncured or partly cured condition, the matrix is then applied to glass fibres and the combination is heated to a temperature of 350 DEG F. to 400 DEG F. to cure the elastomeric material. The term "glass fibres" includes continuous filaments. formed by attenuation of molten streams of glass, staple fibres formed by attenuation of molten streams of glass by blasts of air or steam, strands, yarns and fabrics formed of such filaments or staple, and thin flexible glass flakes. The glass fibres to which the composition is applied may be bare or may be first coated with zinc oxide or magnesium oxide or with compounds that yield zinc oxide or magnesium oxide on heating and then heated. The metal oxides can be applied from aqueous suspensions of the hydroxides or aqueous solutions of the chlorides, the pH being then lowered to deposit the hydroxide on the fibres, or an ammoniacal solution of the hydroxides can be deposited on the fibres. In either case, the deposit is heated to convert it to the oxide The anchoring agent may be incorporated in a size, which is then applied to the glass fibres. A suitable size comprises partially dextrinized starch, hydrogenated soyabean oil, pelargonamide solubilized with acetic acid, an emulsifying agent and magnesium hydroxide.ALSO:An elastomer is bonded to glass fibres through an anchoring agent that is a metal oxide, can bond to the glass-fibre surfaces under the action of heat and can act as a catalyst in the curing of the elastomeric material. Examples are magnesium oxide, zinc oxide and mixtures of these two. The anchoring agent is incorporated into a matrix of elastomeric material which is in an uncured or partly cured condition, the matrix is then applied to glass fibres and the combination is heated to a temperature of 350 DEG F to 400 DEG F to cure the elastomeric material. The elastomer is one which, at least before it is fully cured, contains olefinic groups or halogen substituents or both. Elastomers referred to are neoprene, chlorobutyl rubber and combinations of these with natural rubber compositions containing resinous acids. The term "glass fibres" includes continuous filaments formed by attenuation of molten streams of glass, staple fibres formed by attenuation of molten streams of glass by blasts of air or steam, strands, yarns and fabrics formed of such filaments or staple, and thin flexible glass flakes. The glass fibres to which the composition is applied may be bare or may be first coated with zinc oxide or magnesium oxide. They may be coated with compounds that yield zinc oxide or magnesium oxide on heating and then heated. The metal oxides can be applied from aqueous suspensions of the hydroxides or aqueous solutions of the chlorides, the pH being then lowered to deposit the hydroxide on the fibres, or an ammoniacal solution of the hydroxides can be deposited on the fibres. In either case, the deposit is heated to convert it to the oxide. The anchoring agent may be incorporated in a size, which is then applied to the glass fibres. A suitable size comprises partially dextrinised starch, hydrogenated soyabean oil, pelargonamide solubilised with acetic acid, an emulsifying agent and magnesium hydroxide.ALSO:An elastomer is bonded to glass fibres through an anchoring agent that is a metal oxide, can bond to the glass-fibre surfaces under the action of heat and can act as a catalyst in the curing of the elastomeric material. Examples are magnesium oxide, zinc oxide and mixtures of these two. The anchoring agent is incorporated into a matrix of elastomeric material which is in an uncured or partly cured condition, the matrix is then applied to glass fibres and the combination is heated to a temperature of 350 DEG F to 400 DEG F to cure the elastomeric material. The elastomer is one which, at least before it is fully cured, contains olefinic groups or halogen substituents or both. Elastomers referred to are neoprene, chlorobutyl rubber and combinations of these with natural rubber compositions containing resinous acids. The term "glass fibres" includes continuous filaments formed by attenuation of molten streams of glass, staple fibres formed by attenuation of molten streams of glass by blasts of air or steam, strands yarns and fabrics formed of such filaments or staple, and thin flexible glass flakes. The glass fibres to which the composition is applied may be bare or may be first coated with zinc oxide or magnesium oxide. They may be coated with compounds that yield zinc oxide or magnesium oxide on heating and then heated. The metal oxides can be applied from aqueous suspensions of the hydroxides or aqueous solutions of the chlorides, the pH being then lowered to deposit the hydroxide on the fibres, or an ammoniacal solution of the hydroxides can be deposited on the fibres. In either case, the deposit is heated to convert it to the oxide. The anchoring agent may be incorporated in a size, which is then applied to the glass fibres. A suitable size comprises partially dextrinised starch, hydrogenated soyabean oil, pelargonamide solubilised with acetic acid, an emulsifying agent and magnesium hydroxide. The product may take the form of a glass-fibre-reinforced elastomer, an elastomeric-coated glass-fibre fabric or a laminate.

Patent Agency Ranking