38results about How to "Low compression heat" patented technology

The invention relates to the technical field of tires, and discloses a bicycle tire tread rubber which comprises the following raw materials in parts by weight: 80-90 parts of natural rubber, 10-20 parts of cis-1,4-polybutadiene rubber, 15-30 parts of plasticizer, 25-58 parts of silica white, 1-10 parts of vulcanizing agent, 1-20 parts of accelerator, 1-9 parts of zinc oxide, 0.1-2 parts of calcium carbonate, 1-10 parts of reinforcing agent cb, 0.1-2 parts of stearic acid, 2-5 parts of anti-aging agent aw, 2-5 parts of anti-aging agent 4010, 1-2 parts of paraffin and 1-10 parts of silane coupling agent. The bicycle tire tread rubber has the advantages of tear resistance, fatigue resistance, heat resistance, abrasion resistance, aging resistance, small deformability, light weight, favorable water absorptivity, long service life, low compressive heat generation and dynamic heat generation, small permanent deformation, favorable anti-slip property and small rolling resistance, and can well absorb shock load.

The invention especially relates to tread rubber for a tire and a preparation method thereof, belonging to the field of rubber processing. The tread rubber for the tire comprises, by weight, 50-95 parts of natural rubber, 5-30 parts of butadiene rubber, 5-20 parts of trans-1,4-poly(butadiene-co-isoprene) copolymer rubber, 40-70 parts of a filler, 1.0-3.0 parts of a filler dispersant, 1.0-4.0 partsof a silane coupling agent, 2.0-6.0 parts of zinc oxide, 0.5-3.0 parts of stearic acid, 1.5-5.0 parts of an anti-aging agent, 0.8-3.0 parts of an accelerator, 0.6-2.0 parts of sulfur and 0-0.6 part of an anti-reversion agent. In the tread rubber for the tire provided by the invention, the compatibility and co-vulcanization characteristics of the natural rubber and the butadiene rubber are superior, the filler is uniformly dispersed, and the above components are synergistically reacted with other components, so the finally obtained tread rubber has low rolling resistance and little heat generated by compression on the premise that the wet skid resistance is basically unchanged, and has good wear resistance at the same time.

The invention discloses wet-processed carbon masterbatch, as well as a preparation method and application thereof. When a glue solution and carbon black slurry are mixed by utilizing an existing method, the used auxiliary agent reduces the surface activity of filler and influences the interaction between the filler and rubber. The technical scheme is divided into two parts, the carbon black is subjected to surface modification and dispersion in the first part; and in the second part, a carbon black dispersant is mixed with a rubber solution, and the mixture is separated, dried and molded. According to the invention, a surface modification and homodisperse combined method is adopted for carbon black dispersion, and thus the modified carbon black dispersant has high stability. Vulcanized rubber prepared by utilizing the wet-processed carbon masterbatch has good aging resistance, and a tyre prepared from the vulcanized rubber can be used for reducing compression heat, oil consumption and the like.

The invention discloses a maintenance-free tire rubber material. The tire rubber material is prepared from the following components in parts by weight: 30-70 parts of natural rubber, 70-30 parts of ethylene propylene diene monomer, 5-25 parts of carbon black, 45-35 parts of white carbon black, 2-3 parts of zinc oxide, 1-1.5 parts of stearic acid, 0.5-1.5 parts of an anti-aging agent, 0.1-0.6 partof an accelerant, 0.5-1.0 part of sulfur, 2-3.0 parts of a foaming agent, 1.0-1.5 parts of a foaming aid and super silane accounting for 5 to 8% of white carbon black, wherein the sum of the use amounts of natural rubber and ethylene propylene diene monomer is 100 parts. The tire rubber material has the advantages of low compression heat generation, better rebound resilience and smaller abrasion;by adopting the raw materials with low heat generation, high grip and low rolling resistance and a reasonable formula, the hidden danger to a processor and a user in the production and use process isgreatly reduced, and the safety, the economy and the adaptability of the product are wider.

The invention belongs to the technical field of tire manufacturing, and particularly relates to an in-situ modified rubber composition for a tire, the tire and a preparing method of the tire. The in-situ modified rubber composition for the tire comprises a modified solution polymerized styrene-butadiene rubber polymer, second carbon black, a silane coupling agent, silicon dioxide, an activating agent, an anti-aging agent, an accelerant, sulphur and an auxiliary, wherein the modified solution polymerized styrene-butadiene rubber polymer is formed by mixing solution polymerized styrene-butadienerubber, a rubber modifier and first carbon black. The tire prepared by means of the in-situ modified rubber composition for the tire has the advantage of being low in rolling resistance.

The invention discloses a high-elasticity low-heat-generation environment-friendly reclaimed rubber material and a preparation method thereof. Reclaimed rubber is prepared from 100 parts of waste rubber powder, 5-15 parts of a softener, 0.20-0.50 part of an activator, 0.10-0.15 part of water, 0.30-0.50 part of rosin or resin and 9-11 parts of environment-friendly naphthenic oil through a high-temperature dynamic desulfurization method. The high-temperature dynamic desulfurization condition is high-pressure steam of 1.30-1.40 Mpa, and the temperature reaches 220-230 DEG C and is kept for 2.0-3.0 hours. The reclaimed rubber is prepared by adopting a high-temperature dynamic desulfurization method, more liquid isoprene rubber LIR30 is used as a softener, a proper amount of environment-friendly naphthenic oil is matched with a small amount of activating agent, rosin and water, other components are not needed for modification, the performance of the reclaimed rubber is improved, the reboundresilience of the reclaimed rubber is remarkably improved, and the compression heat generation of the reclaimed rubber is remarkably reduced.

The invention relates to the field of rubber processing, in particular to a tire tread rubber and a preparation method thereof. The tire tread rubber comprises, in parts by weight: 50-95 parts of natural rubber; 5-30 parts of butadiene rubber; 5-20 parts of trans-butadiene rubber; 40-70 parts of filler; 1.0-3.0 parts of filler dispersant silane coupling agent 1.0-4.0 parts; zinc oxide 2.0-6.0 parts; stearic acid 0.5-3.0 parts; anti-aging agent 1.5-5.0 parts; accelerator 0.8-3.0 parts; sulfur 0.6-2.0 parts; Dose 0-0.6 parts. In the tire tread rubber provided by the present invention, the compatibility and co-vulcanization characteristics of natural rubber and butadiene rubber are better, and the filler is evenly dispersed. Under the premise that the wet skid resistance is basically unchanged, the rolling resistance and compression heat generation are lower, and at the same time, the wear resistance is better.

The invention provides an all-steel radial tire shoulder pad rubber and a preparation method thereof. The all-steel radial tire shoulder pad rubber provided by the invention is prepared from raw materials comprising the following components by mass: 80-95 parts of natural rubber; 5-20 parts of trans-butadiene rubber; 35-55 parts of reinforcing agent; 0-3.0 parts of agent; 0-1.5 parts of silane coupling agent; 2.0-6.0 parts of zinc oxide; 1.5-3.5 parts of stearic acid; 1.0-4.0 parts of tackifying resin; parts; 1.8-2.7 parts of sulfur; 0.2-0.5 parts of anti-scorch agent. In the all-steel radial tire shoulder pad rubber provided by the present invention, on the basis of ensuring good vulcanization characteristics and basic physical and mechanical properties of the tire shoulder pad rubber, it can also improve its fatigue resistance, reduce rolling resistance and compression heat generation.

The invention provides an N330 carbon black production method. The process is simple and practical, and produced carbon black is better in performance. A hard carbon black reaction furnace is used for production, and the volume ratio of air to natural gas entering the reaction furnace is (18-19):1, so that more redundant air is generated to take participation in secondary combustion in a reaction chamber; raw oil enters the reaction chamber according to the spray amount of 440 kg / h; each kilogram of raw oil needs 2-3 m<3> of mixed gas composed of air and natural gas; the temperature of secondary combustion in the reaction chamber is controlled to be 1500-1600 DEG C; a plurality of gas inlets are evenly formed in a spray burner in the radial direction, and natural gas enters the gas inlets in a radial surrounding and axial mode so as to improve combustion efficiency; a first quenching section and a second quenching section are arranged at an outlet of the reaction furnace, the temperature of the first quenching section is controlled to be 900-950 DEG C, the temperature of the second quenching section is controlled to be 700-950 DEG C, and accordingly reaction time is prolonged; after carbon black is subjected to wet granulation, mixed gas composed of tail gas generated after carbon black production and air is introduced to dry the carbon black at the temperature of 300 DEG C; the tail gas and the air are mixed according to the volume ratio of (1.5-1.6):1.

The invention discloses a rubber composition with low calorification and low rolling resistance. The rubber composition is prepared by successively carrying out plastification, mixing and vulcanization on rubber based on natural rubber as a rubber raw material and carbon black or white carbon black as a reinforcing agent; in the mixing process of the rubber, silicon carbide micropowder is adopted to replace partial reinforcing agent, a silane coupling agent is added, and the added amounts of the rubber material, the reinforcing agent, the silicon carbide micropowder and the silane coupling agent in the mixing process of the rubber are as follows in parts by weight: 100 part of rubber material, 20-45 parts of carbon black or white carbon black, 5-50 parts of silicon carbide micropowder and 0.4-2.45 parts of silane coupling agent; the silicon carbide micropowder is in an alpha or beta crystal form, and the particle diameter of the silicon carbide micropowder is 0..001mu m-50mu m. According to the invention, the processing performance of the mixed rubber is improved, the compression calorification of vulcanized rubber is reduced, the rolling resistance is obviously reduced, and the slip-wet resistance is improved.

The invention discloses a maintenance-free tire compound, which is composed of the following components measured by weight: natural rubber: 30-70 parts, EPDM rubber: 70-30 parts, carbon black: 5-25 parts, white Carbon black: 45-35 parts, zinc oxide: 2-3 parts, stearic acid: 1-1.5 parts, anti-aging agent: 0.5-1.5 parts, accelerator: 0.1-0.6 parts, sulfur: 0.5-1.0 parts, foaming Agent: 2‑3.0 parts, foaming aid: 1.0‑1.5 parts, super silane: 5‑8% of white carbon black. The sum of the consumption of natural rubber and EPDM is 100 parts. The tire rubber compound of the present invention has the advantages of low compression heat generation, better resilience, and less wear; the present invention uses low heat generation, high grip, and low rolling resistance raw materials, coupled with a reasonable combination of component design, greatly The hidden dangers caused to processors and users in the process of production and use are reduced, and the safety, economy and adaptability of the product are wider.