8 results about "Rubber nanocomposites" patented technology

The invention provides a high-performance functionalized rubber nano composite material as well as a preparation method and application thereof. The high-performance functionalized rubber nano composite material is prepared from the following raw materials: functionalized rubber, a side reaction inhibitor, a filler, an activator, a vulcanizing agent, an accelerant, an anti-aging agent and a softening agent. The side reaction inhibitor is added in the preparation process of the functionalized rubber nano composite material for shearing and blending, side reaction generated in the processing process is inhibited, the high-performance functionalized rubber composite material is obtained, the scorching time is prolonged, the processing performance is improved, the filler is uniformly dispersed, the filler-rubber interaction is good, and the service life of the rubber nano composite material is prolonged. Good dynamic mechanical properties and physical and mechanical properties are realized. When applied to a tire, the high-wear-resistance and heat-generation-resistant rubber composition shows relatively low rolling resistance and relatively high wet skid resistance, wear resistance and heat generation performance are improved, fuel oil consumption can be reduced, and safety and durability of the tire are improved.

The application discloses a rubber nanocomposite containing modified MXene and a preparation method thereof, and belongs to the technical field of tire rubber materials. The technical scheme comprises natural rubber and modified MXene. The modified MXene is obtained by stirring and ultrasonically mixing MXene dispersion liquid, cellulose nanowire (CNF) dispersion liquid and unsaturated alkyl amine and fully reacting. The application is applied to tire rubber materials, solves the problems that existing MXene is prone to aggregation and has limited interfacial bonding force with a rubber matrix, can greatly enhance the interfacial interaction between the MXene and the rubber matrix, improve the compatibility of the MXene and the rubber matrix, and improve the mechanical properties of the rubber nanocomposite.

This invention relates to the field of rubber preparation, specifically to a method for preparing a lignin / rubber nanocomposite masterbatch and its product. The invention involves epoxidizing rubber latex to obtain epoxidized rubber latex, then dynamically mixing the obtained epoxidized rubber latex with lignin slurry. At high speed, the lignin adsorbs onto the epoxidized rubber latex particles, resulting in self-flocculation to obtain the lignin / rubber nanocomposite masterbatch. The lignin exhibits good dispersibility in the lignin / rubber nanocomposite masterbatch, significantly reducing stress defects and improving mechanical properties.

The invention relates to a rubber master batch, in particular to a rubber master batch for conveyor belt cover rubber, a preparation method of the rubber master batch and a rubber nanocomposite. The wet mixing method provided by the invention comprises the following steps: modifying white carbon black by using fatty alcohol-polyoxyethylene ether and a silane coupling agent at the same time, mixing the modified white carbon black with rubber latex in a dispersion liquid, and carrying out film paving and air drying to obtain the rubber master batch. According to the rubber master batch obtained by the method, the white carbon black filler is uniformly dispersed in the master batch, so that the wear resistance and rolling resistance of the master batch can be effectively improved, and the rubber master batch can be used for preparing a rubber nano composite material with excellent wear resistance and rolling resistance. The technical problems that white carbon black is not uniformly dispersed and agglomerated and is lost when the masterbatch is prepared by adopting an existing wet-process mixing process are solved.

The invention discloses a preparation method of epoxidized rubber, the epoxidized rubber, an epoxidized rubber nanocomposite and application. The preparation method of the epoxidized rubber comprises the step of treating an epoxidized rubber solution or latex by using a catalyst for decomposing hydrogen peroxide, the catalyst for decomposing hydrogen peroxide is selected from at least one of a metal simple substance, a metal oxide, a metal salt and an enzyme. The method disclosed by the invention is simple in process, high in efficiency, green, environment-friendly and low in cost, and solves the problem of side reaction caused by hydrogen peroxide in the rubber epoxidation post-treatment process and the process problems that an epoxidized glue solution containing a large amount of hydrogen peroxide cannot be directly applied to liquid-phase mixing, impregnation, foaming, injection molding, product extrusion and the like.

The present application relates to a kind of rubber materials, further, it is a kind of low rolling resistance rubber nanocomposite and its preparation method, application, the vulcanized rubber of preparation.The present application is modified by rough carbon point to white carbon black and compound, after mixing, obtain a kind of low rolling resistance rubber nanocomposite;The tensile, tear performance of the low rolling resistance rubber nanocomposite is improved.Vulcanized rubber is obtained by using the low rolling resistance rubber nanocomposite vulcanization, the rolling resistance coefficient of the vulcanized rubber as tread rubber is small, the tire product prepared by using the vulcanized rubber has lower rolling resistance, it has greater oil-saving advantage when being used in green tire.

The invention provides functionalized rubber, a functionalized rubber nano composite material as well as a preparation method and application of the functionalized rubber nano composite material. The functionalized rubber is obtained by carrying out click reaction on a sulfydryl reagent and rubber containing double bonds in the presence of a side reaction inhibitor, and the obtained functionalized rubber and a rubber additive are mixed and vulcanized to obtain the functionalized rubber nano composite material. According to the method, the defects that in the rubber functionalization process, many side reactions exist, the click reaction is difficult to control and the like are overcome, the side reactions such as carbon-carbon crosslinking in the reaction process are effectively inhibited, the click rate is increased, the prepared high-performance functionalized rubber is low in Mooney viscosity and good in processability, and the method is easy to operate and easy to apply and popularize.

The invention relates to the technical field of rubber nano composite materials, and discloses a high-cutting-resistant wear-resistant high-compatibility hydrogenated nitrile rubber / natural rubber composite material and a preparation method thereof. In the presence of an initiator and a solvent, itaconic anhydride and epoxidized isoprene rubber are subjected to a grafting reaction, and the itaconic anhydride grafted epoxidized isoprene rubber is obtained. After itaconic anhydride grafted epoxidized isoprene rubber is introduced into a natural rubber (NR) / hydrogenated butadiene-acrylonitrile rubber (HNBR) composite material to serve as a compatilizer, a polar anhydride group in the compatilizer and a nitrile group in hydrogenated butadiene-acrylonitrile rubber are subjected to hydrogen bond or dipole-dipole interaction, and interface chemical bonding is enhanced; meanwhile, a non-polar main chain in the compatilizer is compatible with the natural rubber, bridging is formed on a natural rubber / hydrogenated nitrile rubber interface, the compatibility between the non-polar NR and the polar HNBR is effectively improved, the synergistic effect of the non-polar NR and the polar HNBR on the microstructure is achieved, and the wear resistance and the cutting resistance of the composite material are improved.