Improvements in Laminated Articles and methods for producing the same

摘要

1,161,944. Laminates. GENERAL ELECTRIC CO. 16 Jan., 1967 [17 Jan., 1966], No. 2294/67. Heading B5N. [Also in Division B2] A process for adhering a polymer of ethylene to a solid substrate comprises (1) incorporating in the polymer of ethylene an organic peroxide in an amount equal to from 0À1 to 15% by weight based on the weight of the ethylene polymer, (2) applying the polymer of ethylene directly to a solid substrate of metal, ceramic, plywood, fibreboard, cardboard or paper, and (3) pressing the polymer of ethylene directly into place on the substrate by means of elevated temperature and pressure for a time sufficient to effect curing of the polymer of ethylene and adhesion to the substrate. As described the ethylene polymer is applied in powder form, e.g. by spraying, and the organic peroxide is incorporated therein by suspending the ethylene polymer in a liquid which contains the peroxide and which is a solvent for the peroxide but a non-solvent for the ethylene polymer, allowing the ethylene polymer to absorb the peroxide from the solution, removing the liquid by filtration, and removing the residue of solvent by heating. The organic peroxide is preferably of the formula where R 1 and R 6 are aryl radicals and R 2 , R 3 , R 4 and R 5 are of the class consisting of hydrogen and alkyl radicals of less than four carbon atoms, or it may be tertiary butyl perbenzoate, tertiary butyl hydroperoxide, or an acetylene or alkyl peroxide. The ethylene polymer may also include a filler, e.g: treated clay, metal powder, ground ceramic, TiO 2 , fume silica, carbon black, or calcium carbonate, and/or pigments. The ethylene polymer may be a copolymer of ethylene with propylene, butylene, methyl methacrylate or vinyl acetate, or a terpolymer of ethylene, propylene and isobutylene. In examples polyethylene is adhered to a substrate of aluminium to form a decorative panel; or is adhered between two substrates of aluminium, copper, or steel; or is adhered to each face of a substrate of metal, or, in the case of containers, paper. In other examples multiply laminates comprise a number of layers of polyethylene and steel, copper, or aluminium; or of copper and ethylene/propylene copolymer; or of aluminium and ethylene/isobutylene copolymer. The laminates formed are abrasion resistant, and may be used as electronic components, tanks for liquids, vehicle parts, steam hose, diaphragms, mounts, and rolls.