| 摘要 |
In producing articles such as hose, tyres, belting, coatings, laminated articles and foamed products from compositions of glass fibres in a curable elastomer, the glass-to-elastomer bonding agent employed is a hydrolysis product of an organo-silane containing a hydrolysable group or an organic nitrogen compound having the amino, imino, amido or imido group and conferring a positive charge to normally negatively-charged glass fibres. The elastomers are natural rubber, polymers of butadiene, chloroprene and isoprene, and copolymers of these dienes with other substances. The glass may be staple fibre, continuous fibre, yarn or fabric, and may be 3-10% of the elastomer. The organosilane may be RnSiX4-n, n being 1, 2 or 3, R an aliphatic, aromatic or aliphatic-aromatic group with at least one of these groups with ethylenic or acetylenic unsaturation and X the hydrolysable group, e.g. chlorine, bromine, ethoxy or methoxy; examples are vinyl-, trichloro-, allyltrichloro-, vinyltriethoxy- and allyltrimethoxy-silanes. The nitrogen compound may be polyvinyl pyridine, a polyamine R(CH2NH-)xCH2CH2NH2, where R is a monovalent organic group and x a whole number, a polyamine obtained by condensing an epoxide with a phenolic diphenyl methane compound, a polyacrylonitrile, an amino triazine resin, a dialdehyde amine resin, a urea-formaldehyde resin, a melamine-formaldehyde resin, an amine alcohol, an aniline-formaldehyde resin, hexamethylene diamine, a condensation product of an organic diisocyanate with a polyamide, diphenyl guanidine, a heterocyclic tertiary amine with pentadecyl and heptadecyl radicals, or ammonium ricinoleate. The compositions may contain sulphur as vulcanizing agent and a thiuram, e.g. tetraethylthiuram dioxide, tetramethylthiuram disulphide, dipentamethylthiuram tetrasulphide or tetramethylthiuram tetrasulphide, as accelerator of vulcanization. Examples of formulations for applying to the glass fibre are: polyvinyl pyridine and butyraldehydeaniline condensation product, a polyamine R(CH2NH)xCH2CH2NH2, tri(b -methoxyethoxy) vinyl silane and diphenyl guanidine, hexamethylene diamine and butyraldehydemonobutylamine condensation product, vinyl pyridine and allyl triethoxysilane, and 1(2-hydroxyethyl)-2-n-alkyl-2-imidazoline and trichlorosilane in toluene and water, tri(b -methoxyethoxy) vinyl silane, g -aminopropyl vinyldiethoxysilane and g (triethoxysilane propyloxy) propylamine with a thiuram, toluene and water, g -amino propyltriethoxysilane, glycerol and water, g -amino propyltriethoxysilane and vinyl pyridine-resorcinol-formaldehyde latex and water, the cyclic tertiary amine with pentadecyl and heptadecyl substitution and water, a quaternary ammonium chloride and water, and 1(2-hydroxyethyl)-2-N-alkyl-2-imidazoline and water, there being incorporated in some of these formulations a wetting agent which is an alkphenoxy polyoxyethylene ethanol.
|
