A method for preparing a graphene masterbatch by an aqueous phase synergistic aggregating precipitating process and a method for molding a long-lifespan tire for a loading wheel of a heavy-duty vehicle. In this application, a graphene oxide aqueous dispersion and natural rubber latex are taken as raw materials, and subjected to co-precipitating in a water medium to prepare a high-graphene content masterbatch with individual components evenly dispersed. The graphene masterbatch is further subjected to two-stage high-temperature mechanical blending with a natural rubber block to achieve the uniform dispersion of graphene in a rubber composites.

The present invention provides methods for preparing the nut waste sheet composites from a nut waste component and one or more binders.

The present invention provides methods for preparing the nut waste sheet composites from a nut waste component and one or more binders.

Methods to prepare elastomer compounds are described that include dry mixing at least one additive to an elastomer composite masterbatch at low temperatures over a shortened mixing cycle with reduced energy consumption. The elastomer composite masterbatch is produced in a liquid masterbatch process. The resulting elastomer compounds are further described as well as property improvements that can be achieved.

The present disclosure provides compositions and products formed therefrom. In particular, the disclosure provides elastomeric latex articles, such as gloves and condoms, that can exhibit a desired combination of properties that can be correlated to suitable strength and softness.

The present invention provides a pneumatic tire having excellent fuel efficiency, handling stability, and ride quality while maintaining a good balance between them. Provided is a pneumatic tire including a tire component formed from a rubber composition, the rubber composition having cured rubber properties satisfying predetermined values.

A water-based hydrogel polymer coating and a method of application to natural rubber or other elastomeric latex products are provided. The water-based hydrogel polymer is mixed with a blend of at least one elastomeric material to provide a hydrogel polymer blend composition. The water-based hydrogel polymer blend composition is applied in a single application to an elastomeric article, such as gloves, without additional solvents in the polymer blend composition and without a separate acid or chemical priming step. The water-based hydrogel coating herein provides increased lubricity to facilitate improved wet and dry donning of the elastomeric article.

A tire manufacturing method includes making a master batch, using the master batch to make a rubber composition, and making a green tire. The master batch is made wherein a carbon-black-containing pre-coagulation rubber latex is coagulated to obtain a coagulum; a compound according to Formula (I) is added to the water-containing coagulum; ##STR00001##
wherein R.sup.1 and R.sup.2 each indicates a hydrogen atom, an alkyl group having 1 to 20 carbons, an alkenyl group having 1 to 20 carbons, or an alkynyl group having 1 to 20 carbons, R.sup.1 and R.sup.2 may be the same or different, and M.sup.+ indicates sodium ion, potassium ion, or lithium ion; and the compound according to Formula (I) is dispersed within the coagulum. The green tire is provided with unvulcanized rubber sheeting made up of the rubber composition, chafer(s), carcass ply or plies, and bead filler(s).

A foaming process for converting fibrous material into a cellular foam structure includes mixing fibrous material and a solvent-based binding agent to form a mixture; saturating the mixture with a pressurized gas to form a gas-saturated mixture; expanding the gas-saturated mixture by reducing the pressure of the pressurized gas to form an expanded mixture with voids in the fibrous material; and curing the expanded mixture to set the fibrous material and drive off the solvent to provide a stable network of fibrous material having cushioning properties.

A method for producing a rubber wet master batch is disclosed including: producing a carbon black-containing rubber latex solution by mixing carbon black, a dispersion solvent and a rubber latex solution; producing a carbon black-containing rubber coagulum by coagulating the thus-obtained carbon black-containing rubber latex solution; and producing a rubber wet master batch by dehydrating and drying the thus-obtained carbon black-containing rubber coagulum. With respect to this method for producing a rubber wet master batch, the carbon black satisfies conditions such that: the DBP oil absorption is 105-230 mL/100 g; STSA is 90-205 m.sup.2/g; and the value obtained by subtracting the value of STSA from the value of DBP oil absorption is 15 or more. This method for producing a rubber wet master batch enables the achievement of a vulcanized rubber that has wear resistance and low heat generation properties.