摘要:
This invention provides a product comprised of a substrate with a rubber composition attached to the substrate by at least one interlayer of a polysilsesquioxane composition having phosphate cross-linkages. The at least one polysilsesquioxane layer having phosphate cross- linkages is produced from a mixture of a silane coupling agent and a phosphatizing reagent.
摘要:
The invention relates to a coupling agent to provide the coupling of a metal element to a vulcanizable elastomeric material whereby the coupling agent provides both binding to the metal element and reaction with the vulcanizable elastomeric material. The coupling agent comprises a macromolecular backbone and at least one functional endgroup. The functional endgroup is responsible for the binding to the metal element. The backbone has amolecular weight ranging between 1000 and 10000 and has at least one unsaturated carbon-carbon bond for reacting with the vulcanizable elastomeric material. The invention further relates to an article comprising a metal element at least partially embeddedin a vulcanizable elastomeric material and comprising a coupling agent to provide the coupling of the metal element to the the vulcanizable elastomeric material.
摘要:
A vulcanizable adhesive composition, which comprises 45-75% by weight of phenol resin, preferably a mixture of novolak-type and resol-type phenol resins, 5-25% by weight of halogenated polymer, and 10-30% by weight of a metal oxide, can improve an interlayer adhesiveness between the acrylic rubber and metal without surface treatment of metal, such as a chemical treatment, e.g. zinc phosphate treatment, etc., blast treatment, or primer treatment, and thus can be effectively used in the production of a metal/adhesive layer/acrylic rubber composite.
摘要:
There is provided an adhesive composition comprising (i) at least one film forming polymer, (ii) at least one crosslinker selected from the group consisting of polynitroso compounds, polynitroso precursors, and mixtures thereof, and (iii) at least one oxidizer, wherein the molar ratio of oxidizer to crosslinker is from 0.3 to 2.0. Also provided is a method of bonding substrates together using such a composition, and an article made using such a method.
摘要:
A primer for vulcanization bonding, which comprises a copolymerization copolymer of amino group-containing alkoxysilane and vinyl group-containing alkoxysilane, and an organometallic compound, can give a metal-rubber composite having a water-resistant adhesiveness equivalent or superior to that of coating type chromate processing agent, without application of harmful coating type chromate processing to a metal, and thus can be effectively used in surface treatment of metals such as stainless steel, etc. for the production of seal products of rubber-bonded metal (e.g. oil seals, packings and gaskets), valves, vibration-controlled or vibration damped products (e.g. vibration-controlled steel sheets and vibration-damped rubber), industrial rubber products, etc.
摘要:
Adhesion of rubber to a variety of metals (aluminum, stainless steel, mild steel and brass) is effectively achieved by the application of an organofunctional silane (I) and a non-organofunctional silane (II) to the requisite surface. Preferably, the organofunctional silane (I) is a vinyltrialkoxysilane with the non-organofunctional silane (II) preferably comprising an alkoxylated substituted alkyl silane. The silanes (I) and (II) are at least partially hydrolyzed and are normally provided in the form of a EtOH/H2O solution. Bonded joints formed by these adhesive treatments can withstand fuel degradation tests indicating that the treatments can be used, for example, to bond metal and rubber surfaces in automotive and other environments in which the joined parts will be contacted by fuels, oil and/or organic solvents.
摘要:
An adhesion promoting composition for enhancing adhesion between an elastomeric substrate and a metal surface which, when applied at least in substantial contact with the metal surface, produces an elastomer-metal adhesive bond that withstands high temperature fluid and corrosive material environments and that can be applied without extensive pretreatment of the metal surface. The adhesion promoting composition comprises a phenolic resin derived from a first phenolic component, a second phenolic component, and a formaldehyde source, wherein the first phenolic component is a monohydroxy aromatic compound, a dihydroxy aromatic compound or a combination thereof, and the second phenolic component is a trihydroxy aromatic compound. A two-part adhesive composition containing a primer component and an overcoat component is also disclosed. The primer component contains the adhesion promoting composition and a first halogenated polyolefin while the overcoat component contains a second halogenated polyolefin and a nitroso compound.
摘要:
A method for bonding a rubber substrate to a metal substrate wherein a primer composition is first applied to the surface of said metal substrate and the rubber substrate is then bonded to the primer composition-containing metal substrate surface using a rubber-to-metal bonding adhesive, the improvement comprising employing as the primer composition a mixture comprising an epoxidized diene polymer having a molecular weight of about 500 to 30,000 and a resole type phenolic resin, in a weight ratio of about 2 to 100 parts of said diene polymer per 100 parts of said resole type phenolic resin.