Disclosed herein is a foamable composition including a polymer component, a foaming agent, a crosslinking agent, a filler, and a recovered silicon sludge containing silicon carbide and silicon. The polymer component is present in an amount ranging from 15 wt % to 60 wt % based on a total weight of the foamable composition. A foamed material prepared from the foamable composition and a composite product including the same are also disclosed.

The rubber-plastic composite foamed material of the present invention is made by mixing and foaming a plurality of components including 100 parts by weight of rubber, 5-70 parts by weight of hollow glass microspheres, 2-25 parts by weight of carbon black, 10-40 parts by weight of softening oil, 10-30 parts by weight of sulfur ointment, 0.5-5 parts by weight of antioxidant, 0.5-10 parts by weight of crosslinking agent and 2-12 parts by weight of foaming agent. By including hollow glass microspheres into the composition, the rubber-plastic composite foamed material of the present invention exhibits better compression resistance and heat retention.

To provide a rubber composition excellent in elasticity and low loss property.

A rubber composition comprising 100 parts by weight of a chloroprene rubber and from 1.2 to 3.0 parts by weight of cellulose nanofibers, characterized in that a vulcanized sheet obtained by vulcanizing the rubber composition has a 100% tensile stress (M100) increased by 1.5 MPa or more per part by weight of the cellulose nanofibers added, where the increase of M100 is calculated by subtracting M100 of a vulcanized sheet containing no cellulose nanofibers from M100 of the vulcanized sheet containing the cellulose nanofibers, and dividing the difference by the amount of the cellulose nanofibers contained.

A composite comprises: a reinforcing element (10), an adhesive layer (14) made from an adhesive composition, and an elastomeric body made from an elastomeric matrix comprising an ethylene/alpha-olefin type elastomer and/or a polychloroprene elastomer. The adhesive composition comprises a resin based: on a polyphenol comprising an aromatic ring bearing two hydroxyl functions in the meta position relative to one another, the two positions ortho to one of the hydroxyl functions being unsubstituted; and/or on a monophenol comprising a six-membered aromatic ring bearing a single hydroxyl function, the two ortho positions being unsubstituted, or an ortho position and the para position being unsubstituted, and on a compound comprising an aromatic ring bearing two functions, one of these functions being a hydroxymethyl function and the other being an aldehyde function or a hydroxymethyl function.

The fragrant gel polymer system is a process where a complete fragrance formulation remains whole and is then blended with either a polymer or a cross-linking agent. The non-fragrance carrying polymer is then liquefied and made homogenous with a solvent, including esters. The solvents modify viscosity and ease the mixing of the non-fragrance carrying polymer with the fragrance carrying polymer. The method also provides surfactants and wetting agents for further integration and mixing of the fragrance oils with either the polymer or the cross-linking agent during the steps of the process. Mixing of the fragrance carrying polymer and the non-fragrance polymer results in a gel that sets in less time and with less syneresis than existing processes.

A production method comprising: (a) a step of melt-mixing a base resin containing a chlorinated polyethylene; an organic peroxide, an inorganic filler, and a silane coupling agent, in specific ratios, at a temperature equal to or higher than a decomposition temperature of the organic peroxide, to prepare a silane master batch; (b) a step of mixing the silane master batch obtained in the step (a) with a silanol condensation catalyst, and then forming the resultant mixture; and conducting at least one of the melt-mixing in the step (a) and the mixing in the step (b) is performed in the coexistence of a chloroprene rubber or a polyvinyl chloride; a heat-resistant chlorine-containing crosslinked resin formed body produced by the method, a silane master batch, a mixture and formed body thereof, and a heat-resistant product.

A slidable rubber material that has an amino-modified interfacial layer that does not affect the compression set. Although the slidable rubber material includes a rubber component such as a butyl rubber or halogenated butyl rubber etc. having the low-compression set, which contains a vulcanization agent such as a nitrogen/sulfur compound or a vulcanizing auxiliary agent, the rubber part is coated with a silicone rubber layer. The slidable rubber material exhibits a slidability and resists the detachment or elution of fine particles from the coating layer. A rubber component and a vulcanization agent; an interfacial modification layer that coats the rubber part and an amino-modified silicone compound is incorporated with surface molecules of the rubber part; and a layer that coats the interfacial modification and contains solid fine particles, an addition-type or condensation-type silicone rubber in which the particles are dispersed, and a curing catalyst for silicone rubber.

Provided is a wiper blade rubber which has excellent wiping properties and low friction properties with respect to both clean glass surfaces and glass surfaces that have been subjected to a water repellent treatment, and which maintains these properties for a long period of time. A wiper blade rubber which has a lip part wherein a coating layer is provided on a rubber substrate by (a) applying a first coating agent onto a part of the surface of the rubber substrate, (b) curing a first coating layer by heating the rubber substrate onto which the first coating agent is applied, (c) applying a second coating agent onto the surface of the rubber substrate which has the cured first coating layer and (d) drying the second coating agent. The present invention enables the achievement of a wiper blade rubber wherein: the coating layer contains the first coating layer and the second coating layer; and the first coating layer is affixed to a part of the rubber substrate and the second coating layer is affixed to another part of the rubber substrate in the lip part.

Disclosed herein are elastomer compounds comprising: at least one elastomer that is resistant to heat for 70 h at 100° C. such that the at least one elastomer exhibits at least one of the following properties selected from: (a) a change in durometer hardness of no more than 15 points, (b) a change in tensile strength of no more than 40%, and (c) a change in ultimate elongation of no more than 40% The elastomer compound further comprises at least one graphene-based material present in an amount ranging from 0.01 phr to 30 phr relative to the at least one elastomer and at least one carbon black present in an amount ranging from 15 phr to 150 phr relative to the at least one elastomer. Also disclosed are methods of making such compounds, and articles comprising elastomer compounds.

A porous sound absorbing material having an average cell size of 100 to 600 μm and an apparent density of 40 to 140 kg/m.sup.3. A sound absorption method using this porous sound absorbing material.