5 results about "Raw rubber" patented technology

The invention discloses a radial tire mechanical damage repair method, relates to the technical field of tire repair, and solves such problems as easy air leakage and infirm bonding of a radial tire after the mechanical damage repair. The radial tire mechanical damage repair method comprises damage polishing, reinforcement and sealing of an inner side damage, sealing of an outer side damage and hot vulcanization treatment of raw rubbers; the pressure is 2-2.5 kg/cm2; the temperature is 120-130 DEG C; and the time is 75-85 minutes. The radial tire mechanical damage repair method is easy to operate, low in cost and firm in sealing, and guarantees the driving safety.

The invention provides a preparation method of a high-strength tire curing bladder, and relates to the technical field of tire curing bladder production and processing. In a component of the tire curing bladder, raw rubber comprises butyl rubber and brominated butyl rubber; a filler comprises carbon black, acetylene carbon black, graphite and aluminum oxide; an active agent is zinc oxide master batch particles; a processing aid comprises stearic acid and paraffin; a vulcanizing agent comprises vulcanized resin and sulfur; wherein the unsaturation degree of the butyl rubber is 0.5-2%, and the brominated butyl rubber contains 1.5-2.5% of bromine. The preparation method comprises following steps: carrying out three-stage rubber mixing to process a rubber sheet, and then injecting and vulcanizing to obtain the tire curing bladder. Compared with the prior art, the invention has the advantages that the butyl rubber and the brominated butyl rubber are used as raw rubber, and an adopted rubberextruder is three-stage rubber mixing equipment, so that high-temperature mixing time is shortened, the stability of the brominated butyl rubber is maintained, the purpose of uniform mixing is achieved, and the vulcanization time can be shortened while the strength is improved.

The invention discloses a marine environment resistant metamaterial substrate, which is prepared from the following components by mass: 100 parts of raw rubber, 40-330 parts of ceramic powder, 0.7-6 parts of a vulcanizing agent and 0.4-15 parts of an assistant. The preparation method includes: blending the raw rubber, ceramic powder, the vulcanizing agent and the assistant in proportion; and thenconducting banburying mixing and hot press molding in order to obtain the marine environment resistant metamaterial substrate. The marine environment resistant metamaterial substrate provided by the invention is realized by mixing ceramic powder ceramic powder and the assistant into the raw rubber matrix, can be prepared into different thicknesses according to needs and has good attaching performance, and can be used for preparation of marine environment resistant wave-absorbing metamaterials.

The invention discloses a rubber mixing formula using a vulcanizing agent as well as a production process thereof, and belongs to the field of rubber mixing. The rubber mixing formula is prepared by mixing the following raw materials in parts by weight: 100 parts of raw rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 2 parts of RL-20, 4 parts of PEG-4000, 4 parts of carbon black, 20 partsof black factice, 110 parts of paraffin oil and 15 parts of a vulcanizing agent. The scorching time of the rubber can be significantly prolonged, the Mooney viscosity can be reduced, the tensile strength of the rubber is significantly optimized, the storage property of the rubber is further improved, and transportation and processing are facilitated; and various raw materials can be mixed completely and various properties of the rubber material can be further improved.