摘要:
Enhanced band bending materials for use in rectifying contacts comprising metal nanoparticles and a semiconducting polymer that is soluble in common organic solvents including, for example, a gold-polymeric nanocomposite comprising gold nanoparticles in poly(m-phenylenevinylene-co-2,5-dioctoxy-p-phenlenevinylene((“PmPV”). The nanocomposite material provides for enhanced Schottky barriers.
摘要:
A tire tread comprising a rubber composition based on (phr: parts by weight per hundred parts of elastomer): (i) a diene elastomer; (ii) more than 50 phr of an inorganic filler as reinforcing filler; (iii) between 2 and 15 phr of an (inorganic filler/diene elastomer) coupling agent; (iv) between 1 and 10 phr of a methylene acceptor, and (v) between 0.5 and 5 phr of a methylene donor. This tread has, after mechanical running-in of the tire for which it is intended (“auto-accommodation”), a rigidity gradient which increases radially from the surface towards the inside of the tread. Use of such a tread for the manufacturing or recapping of tires. Tires comprising a tread according to the invention, in particular of the snow or ice type (“winter” tires).
摘要:
Barrier coating mixtures include (a) a non-butyl elastomeric polymer; (b) an acid or base treated dispersed, substantially exfoliated silicate filler material that has not been functionalized with organic cations having an aspect ratio greater than 25; and (c) at least one additive, wherein the total solids content is less than 30% and the amount of filler is between 5% to about 60% of the total solids content. The coating retains its permeability properties under strain and has a strain to first damage of at least 5% biaxial elongation at 0% RH.
摘要:
A process for producing an elastomeric article having an interpenetrating network structure included the following steps. Firstly, a mold is contacted with an elastomeric composition. The elastomeric composition includes a base latex and a thermoplastic ethylene-vinylacetate (EVA) copolymer latex. The base latex includes a styrene-butadiene rubber (SBR) latex and a carboxylated styrene-butadiene rubber (C-SBR) latex, and the mixing ratio of the base latex to the EVA copolymer latex is from 95:5 to 40:60. Then, the elastomeric composition on the mold is allowed to perform a vulcanization reaction, thereby forming the elastomeric article having the interpenetrating network structure.
摘要:
An elastomeric composition includes a base latex and a thermoplastic ethylene-vinylacetate (EVA) copolymer latex. The base latex includes one or at least one of a styrene-butadiene rubber (SBR) latex and a carboxylated styrene-butadiene rubber (C-SBR) latex. A process for producing an elastomeric article having an interpenetrating network structure included the following steps. Firstly, a mold is contacted with such elastomeric composition. Then, the elastomeric composition on the mold is allowed to perform a vulcanization reaction, thereby forming the elastomeric article having the interpenetrating network structure.
摘要:
An improved adhesive composition and method for adhering textile reinforcing elements to rubber, particularly ethylene-propylene-diene rubber in the manufacture of rubber articles such as power transmission belts, wherein the adhesive composition comprises a latex of a hydrogenated styrene-butadiene rubber, a carboxylated hydrogenated styrene-butadiene rubber, a hyddogenated nitrile-butadiene rubber, a carboxylated hydrogenated nitrile-butadiene rubber, a chlorosulfonated polyethylene or blends thereof; an aqueous solution of a half-ester of maleinized liquid poybutadiene; and, optionally, up to about 15% by weight carbon black in an aqueous solution.
摘要:
Nitrile rubber compositions, articles of manufacture made therefrom, and methods of making them, are disclosed. The nitrile rubber compositions of the invention are substantially free of zinc oxide, and have good strength and chemical resistance while being softer than many conventional nitrile rubbers. The invention provides articles of manufacture, including gloves, which are soft, yet strong, and can be economically manufactured.
摘要:
A rubber additive is provided, which comprises crosslinked fatty acid and starch, and preferably further comprises a carrier, preferably an asphalt carrier. The rubber additive increases tear resistance when added to a rubber compound.
摘要:
This invention presents a rubber composition wherein a determined amount of protein is mixed with unvulcanized rubber. Rubber products made of this rubber composition have sufficient strength for practical use and are harmless to human bodies. The rubber composition of the invention not requiring vulcanizing process is advantageous in eliminating the need of large-scale vulcanizing equipment. Combined use of a curing agent and protein will increase modulus higher than using the curing agent alone.
摘要:
A latex film product such as a prophylactic condom, a surgical glove, a medical examination glove, and the like, having improved chemical resistance, such product comprising a shaped film consisting essentially of a cured mixture of (a) a copolymer of acrylonitrile and butadiene or isoprene, and (b) a high styrene content styrene-butadiene copolymer.