55results about How to "Improves reversion resistance" patented technology

The invention discloses an all-steel radial tire combined rubber compound for improving shoulder separation and tread separation. The all-steel radial tire combined rubber compound is respectively used for preparing shoulder pad rubber and base part rubber. The all-steel radial tire combined rubber compound comprises, by weight, 80.0-100.0 parts of natural rubber, 0-20.0 parts of cis-polybutadienerubber, 15.0-45.0 parts of carbon black, 8.0-15.0 parts of white carbon black, 3.0-6.0 parts of zinc oxide, 1.0-3.5 parts of an activator stearic acid, 1.0-2.0 parts of a carbon black dispersant, 0.5-2.0 parts of an antioxidant RD, 1.0-2.5 parts of an antioxidant 4020, 1.3-3.8 parts of a silane coupling agent, 1.5-3.0 parts of insoluble sulfur IS7020, 0.8-1.8 parts of an accelerator NS, 0.1-0.3 part of a scorch retarder and 0.5-2.0 parts of alkyl phenol disulfide. The above formula rubber compound has a high modulus at a given elongation, so the deformation of a tire under the same load is reduced, thereby heat generated by compression deformation and curling is reduced; and the rubber compound has the advantages of low dynamic heat, good aging resistance, improvement of the long-time high load driving resistance of the tire, and effective reduction of the shoulder separation, tread separation and other symptoms.

The invention discloses a flame-retardant sealing ring for motors of range hoods. The flame-retardant sealing ring is made from raw materials including nitrile rubber, zinc oxide, stearic acid, carbon black, white carbon black, sulphur powder, an accelerant CZ, an accelerant M, an accelerant TMTD, ETU-80, light magnesium oxide, pottery clay, chloroprene rubber adhesive, aluminum hydroxide, a silane coupling agent, zinc borate, antimonous oxide, modified flame retardant, dioctyl phthalate, carnauba wax, antiager 2246, antiager BZ and a processing agent WB-16. The flame-retardant sealing ring is good in high-temperature resistance and flame retardant performance, and meanwhile has the advantages of oil resistance, no halogen, low toxicity and environment friendliness.

The invention discloses a flame-retardant ageing-resistant sealing ring rubber material which comprises the following raw materials in parts by weight: 80-100 parts of natural rubber, 20-40 parts of butadiene styrene rubber, 10-30 parts of ethylene propylene diene monomer, 10-30 parts of a phosphate modified polyurethane elastomer, 2-4 parts of dicumyl peroxide, 0.5-1 part of sulfur, 1-3 parts of an accelerant DM, 2-4 parts of an accelerant TAIC, 3-8 parts of zinc oxide, 1-3 parts of stearic acid, 6-10 parts of carbon black N660, 5-10 parts of titanium dioxide, 2-5 parts of quartz powder, 10-18 parts of calcite in powder, 6-15 parts of opal powder, 1-4 parts of a silane coupling agent, 2-8 parts of zinc borate, 1-4 parts of melamine, 1-2 parts of an anti-aging agent 4010NA, 2-4 parts of an anti-aging agent MB and 1-3 parts of an anti-aging agent AW. The rubber material disclosed by the invention has good flame-retardant property, ageing resistance and excellent weather resistance.

The invention discloses a low temperature-resistant and aging-resistant chloroprene rubber composite material. The low temperature-resistant and aging-resistant chloroprene rubber composite material is prepared from the following raw materials: chloroprene rubber, natural rubber, butadiene rubber, styrene-isoprene segmented copolymer rubber, polybutylene terephthalate, maleic acid grafted modified natural rubber, nano zinc oxide, nano magnesium oxide, stearic acid, 2,5-dimethyl-2,5-di-tertiary-butyl peroxide hexane, trithiocyanuric acid, triallyl trimellitate, nano silica, precipitated silica, purple carbon black, nano microcrystalline cellulose, silane coupling agent KH-550 modified montmorillonoid, an anti-aging agent, an accelerant NA-22, an accelerant TE, an accelerant ZIP, vinyl tri(beta-methoxyl ethyoxyl) silane, dioctyl azelate, dioctyl sebacate and a titanate coupling agent NDZ-201. The low temperature-resistant and aging-resistant chloroprene rubber composite material disclosed by the invention has the advantages of high strength, good low temperature resistance and excellent aging resistance.

The invention belongs to the technical field of rubber production, and particularly relates to an abrasion-resistant base compound for solid tyres of crane cars. The abrasion-resistant base compound for the solid tyres of the crane cars comprises raw materials in parts by weight as follows: natural rubber, liquid polybutadiene rubber, carbon black N234, white carbon black, a silicon coupling agent, poly-2,3,4-trimethyl-1,2-dihydroquinoline, N-(1,3-dimethyl)-N'-phenyl-p-phenylenediamine, zinc oxide, zinc stearate, N-tert-butylbenzothiazole-2-sulfenamide, tetramethyl-thiuram sulfide, sulfur, N-cyclohexylthiophthalimide and polyamide fibers. The base compound has the higher modulus and the good abrasion resistance, and meanwhile, the base compound is better in reversion resistance and low in hysteresis loss.

The invention discloses an Nd-based multi-ligand vulcanization accelerator and a preparation method thereof. In synthesis, an Nd element is used as a rare earth element, and four ligands are contained; the ligand 1 and the ligand 2 are accelerator radicals with good vulcanization acceleration effects, the ligand 3 is phenanthroline capable of forming strong coordination with the rare earth element, and the ligand 4 is acrylic acid capable of improving the solubility of the accelerator in a sizing material. The preparation method is simple, convenient and feasible, does not need inert gas shielding, is mild in preparation process condition, and has no harmful gas generation. The multi-ligand rare earth vulcanization accelerator has good solubility in rubber, and is long in vulcanization and scorching time, good in vulcanization curve flatness, non-toxic, odorless and pollution-free. The vulcanization accelerator can replace a currently used zinc oxide, stearic acid and accelerator combination system, and is applicable to high performance tires and other rubber products.

The invention belongs to the technical field of rubber production, and particularly relates to an abrasion-resistant base compound for solid tyres of heavy trucks. The abrasion-resistant base compound for the solid tyres of the heavy trucks comprises raw materials in parts by weight as follows: natural rubber, carbon black N339, aromatic oil, poly-2,3,4-trimethyl-1,2-dihydroquinoline, N-(1,3-dimethyl)-N'-phenyl-p-phenylenediamine, zinc stearate, N-tert-butylbenzothiazole-2-sulfenamide, tetramethyl-thiuram sulfide, sulfur, an anti-scorching agent and P-tert-butylphenol formaldehyde resin. The base compound has the higher modulus and the good abrasion resistance, and meanwhile, the base compound is better in reversion resistance and low in hysteresis loss.

The invention relates to the technical field of rubber, in particular to a rubber composition for coating a steel wire cord of a radial tire for engineering machinery. The rubber composition is characterized by further comprising the following components in parts by weight by taking 100 parts by weight of a rubber component as the baseline: 5-20 parts of white carbon black, organic acid cobalt salt with the cobalt content of 0.03-1 parts by weight, 0.5-5 parts of an adhesive resorcinol capable of being replaced with a mixture of resorcinol and a carrier, 0.5-7 parts of an adhesive HMMMM capable of being replaced with a mixture of the adhesive HMMMM and a carrier, 1.0-3.0 parts of hexamethylene-1,6-bisthiosulfate disodium salt/two-part crystal water capable of being replaced with a mixture of hexamethylene-1,6-bisthiosulfate disodium salt/two-part crystal water and a carrier, 0.1-1 part of 1,3-bis9(3-methyl-2,5-dioxopyrrol-1-yl)methyl)benzol capable of being replaced with a mixture of 1,3-bis9(3-methyl-2,5-dioxopyrrol-1-yl)methyl)benzol and a carrier, 2-8 parts of insoluble sulfur and 0.5-1.5 parts of a sulfenamide accelerator DZ.

The invention discloses anti-revulcanization support rubber for run-flat tires, and relates to the technical field of rubber production. The anti-revulcanization supporting rubber for a run-flat tireis prepared from the following raw materials in parts by weight: 3# smoked sheet rubber, neodymium butadiene rubber, carbon black N550, TDAE oil, poly-2,2,4-trimethyl-1,2-dihydroquinoline, N-(1,3-dimethyl)butyl-N'-phenyl p-phenylenediamine, zinc oxide, stearic acid, sulfenamide accelerators, sulfur, scorch retarder and anti-revulcanization additives. The supporting rubber has good vulcanization revulcanization resistance, and meanwhile, the resilience, flexibility, tearing strength, low heat generation and other properties of vulcanized rubber can still be well maintained.

The invention discloses a preparation method of anti-reversion sidewall rubber for run-flat tires, and relates to the technical field of rubber production. The rubber is prepared from the following raw materials in parts by weight: natural rubber, ethylene propylene diene monomer, carbon black, an elastomer compatibilizer, zinc oxide, stearic acid, operating oil, an internal releasing agent, microcrystalline wax, an anti-aging agent RD, an accelerant, sulfur and an anti-reversion aid. The preparation method comprises the following steps: putting the natural rubber and the ethylene propylene diene monomer into an internal mixer, adding the carbon black, the elastomer compatibilizer, the zinc oxide, the stearic acid, the operating oil, the internal releasing agent, the microcrystalline wax and the anti-aging agent RD into the internal mixer, adding the accelerant, the sulfur and the anti-reversion assistant into the internal mixer, and finally vulcanizing. The sidewall rubber has good vulcanization reversion resistance, and the resilience, flexibility, tearing strength, low heat generation and other properties of vulcanized rubber can still be well maintained.

The invention discloses flexible energy-saving super-wear resistant cover rubber for a steel wire rope core conveyor belt and a preparation method thereof, and relates to the field of rubber conveyorbelts. The product comprises the following components in parts by weight: 60-80 parts of natural rubber, 20-40 parts of butadiene rubber, 0.2-0.3 parts of a peptizer, 2-5 parts of an anti-aging agent,0.5-1.5 parts of an antioxidant, 4-7 parts of nano zinc oxide, 1.5-2 parts of stearic acid, 1-1.5 parts of microcrystalline wax, 2-5 parts of a high performance rubber dispersant, 3-5 parts of an anti-wear agent, 5-10 parts of a phenolic reinforcing resin, 1-1.5 parts of an accelerator, 3-5 parts of aromatic oil, 40-70 parts of carbon black, 0.5-1.5 parts of hexamethylenetetramine, and 1.5-2.5 parts of sulfur. The product has the characteristics of wear resistance, tear resistance, high adhesion with core rubber adhesive layers, long service life, and the like.

The invention relates to the technical field of silicone rubber, and discloses medical silicone rubber, which is prepared from the following raw materials in parts by weight: 100 parts of rubber raw materials; 45 to 55 parts of white carbon black; 3-8 parts of a vulcanizing agent; 2-3 parts of a control agent; 1-2 parts of hydrogen-containing silicone oil; 3-5 parts of a heat-resistant additive; 1-3 parts of an inhibitor; and 1-2 parts of a catalyst. According to the medical silicone rubber and the production process, the rubber raw materials are refined twice, a platinum complex is used as a catalyst, hydrogen-containing silicone oil is used as a cross-linking agent, vinyl at the tail end and in the middle of polysiloxane and the cross-linking agent are subjected to an addition reaction, and a silicone rubber product is free of generation of low-molecular substances, uniform in vulcanization and excellent in reversion resistance.

The invention discloses a cable with good toughness and excellent thermal stability. The cable comprises a conductor and a protective jacket layer which covers the outer side of the conductor, wherein the protective jacket layer is prepared from the following raw materials in parts by weight: 20 to 40 parts of EVA (Ethylene Vinyl Acetate) resin, 5 to 15 parts of hydrogenated nitrile butadiene rubber, 12 to 15 parts of ABS (Acrylonitrile Butadiene Styrene) high-glue powder, 2 to 6 parts of microcrystalline cellulose, 5 to 15 parts of composite microsphere, 1 to 5 parts of nano hydroxyapatite powder, 5 to 12 parts of talcum powder, 2 to 6 parts of medical stone, 10 to 20 parts of oil shale, 12 to 15 parts of asbestos ash, 2 to 3 parts of ammonium polyphosphate, 1 to 2 parts of yttrium oxide, 1 to 3 parts of bis-2,4-dichlorobenzoyl peroxide, 1 to 2 parts of zinc dimethyldithioformate, 1 to 2 parts of butyl stearate, 1 to 3 parts of tetrabutylammonium bromide, 1 to 2 parts of zinc oxide, 2 to 3 parts of magnesium oxide, 24 to 28 parts of triethyl citrate, 8 to 10 parts of dimethyltin bis(isooctylmercaptoacetate), 25 to 30 parts of triethyl citrate, 1 to 2 parts of an anti-ageing agent AW and 0.8 to 1.2 parts of an anti-ageing agent A.

The invention relates to the technical field of new materials for manufacturing car tires, and in particular, relates to a bead wear-resistant rubber composition and a mixing method thereof and a tire. According to the bead wear-resistant rubber composition, the lagging loss of a rubber material is reduced by adopting butadiene rubber B; styrene butadiene rubber is adopted to improve carbon black dispersion so as to reduce lagging of the rubber material; the lagging of the rubber material is reduced by reducing the dosage of a filling reinforcing agent; the wear resistance is improved by adopting a high-wear-resistance carbon black reinforced rubber composition; by adopting the lignocellulose reinforced rubber composition, the modulus can be improved, and the permanent deformation can be reduced; and an organic sulfur donor is adopted to reinforce the bead wear-resistant rubber composition, so that the anti-reversion performance is improved, the modulus of the rubber material is improved, the compression permanent deformation is reduced, the compression temperature rise is reduced, the lag of bead wear-resistant rubber is reduced, the control of the tire is improved, and the rolling resistance of the tire is reduced.