Patent GB-1087907-A (GB)
Title: Glass fibre-elastomer assembly with metal oxide anchoring agents
IPC: C08K3/16
Filed: 1963-12-05
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.