172 results about "Mooney viscosity" patented technology

The invention belongs to the technical field of rubber, and discloses bio-based reinforced resin, a preparation method, a rubber composition and application. The bio-based reinforced resin is prepared from lignin, cashew nut shell oil, rosin or derivatives thereof and a vegetable fat modifier, the biochar content is up to 100%, the Mooney viscosity and MH of a sizing material are obviously reduced, and the bio-based reinforced resin has the advantages of long scorching time and high vulcanization speed in the sizing material application process.

The invention discloses a preparation method of nitrile rubber with improved thermo-oxidative aging resistance, which comprises the following steps: butadiene and acrylonitrile are used as main polymerization monomers, and a reactive anti-aging agent with an amide group is used as a functional monomer; the total addition amount of butadiene and acrylonitrile is 100 parts by mass, and acrylonitrile is added in batches or continuously, preferably more than three times; a low-temperature emulsion polymerization method is adopted, and the compound emulsifier at least contains disproportionated rosin soap, C10-C13 linear alkyl benzene sulfonic acid and naphthalene sulfonic acid formaldehyde condensate sodium salt; the preparation method comprises the following steps of: adding a molecular weight regulator into a compound emulsifier, preferably 3.2-6.5 parts by weight, more preferably 3.8-6.0 parts by weight of the compound emulsifier, adding the molecular weight regulator once or multiple times, synthesizing butyronitrile rubber cement, adding a terminating agent, degassing, condensing, washing and drying to obtain the butyronitrile rubber. According to the invention, the nitrile rubber with good thermo-oxidative aging resistance is produced, wherein the content of bound acrylonitrile is 17-20%, and the binding amount of Mooney viscosity # imgabs0 # reactive anti-aging agent is 1-2%.

A green and sustainable tire base rubber composition and a preparation method, relating to the technical field of tire production. The composition comprises a tire base. The tire base comprises 100 parts by weight of cis-1,4-polyisoprene, 20-40 parts by weight of bio-based carbon black, 0-20 parts by weight of bio-based silicon, 0-20 parts by weight of a silane coupling agent, 1-3 parts by weight of stearic acid, 2-7 parts by weight of zinc oxide, 0.5-2 parts by weight of a carbon black coupling agent, 1.5-3.5 parts by weight of the antioxidant 6PPD, 0.5-2 parts by weight of the antioxidant TMQ, 1.5-2 parts by weight of oil-extended sulfur powder, and 1.5-3.0 parts by weight of the accelerator CZ. The use of the carbon black coupling agent reduces the heat build-up of a rubber material, however, the Mooney viscosity of the rubber is significantly increased. Once a dedicated process has been used, the viscosity of the rubber material is controlled, and the tanδ value of the heat build-up of the rubber material at 60°C is significantly reduced, so that the rolling resistance of a tire is reduced, and the tire maintains good physical and mechanical properties.

The utility model discloses a carcass composite piece for improving exposed lines in a tire, which comprises an airtight layer, a transition layer, a carcass, a carcass rubber sheet, a tire shoulder pad rubber, a tire crown, a tire sidewall and a carcass body rubber, the transition layer is paved on the airtight layer, the carcass is paved on the transition layer, the tire shoulder pad rubber is paved on the carcass and is positioned on the shoulder part of the tire, and the tire crown is paved on the tire shoulder pad rubber. The tire shoulder pad rubber is laid at the joint of the tire body and the tire shoulder pad rubber, the tire body rubber is arranged at the joint of the transition layer and the tire body and located at the tire shoulder, and the tire body rubber sheet is laid at the joint of the tire body and the tire shoulder pad rubber and located at the tire shoulder. The problems that gaps between tire body cord threads are increased, cord thread rubber materials are insufficient, and butyl rubber permeates into an air tight layer due to inflation shaping expansion are effectively solved, and when existing equipment is free of space transformation or capital is insufficient, the problem that threads are exposed in a tire due to the fact that the size and quality of half parts fluctuate, the Mooney viscosity of a transition layer is too low, and the assumed stretching value of the tire body cord threads is too large is effectively solved.

The present disclosure provides a process. In an embodiment, the process includes providing a neat ethylene / propy-lene / non-conjugated polyene terpolymer (n-terpolymer) having a Mooney viscosity (ML (1+4) at 125C) less than 100 Mooney units (MU). The process includes exposing the n-terpolymer to electron beam radiation at a dosage from 0.2 megaRad (MRad) to 1.3 MRad. The process includes forming a branched ethylene / propylene / non-conjugated polyene terpolymer (b-terpolymer) having a Mooney viscosity ML (1+4) at 125C from 25 MU to 135 MU.

The invention discloses high-temperature-resistant silicone rubber and a preparation method thereof, and belongs to the field of polymer compositions. The silicone rubber is composed of vinyl-terminated polydimethylsiloxane, fumed silica, hydroxyl silicone oil, a hydrogen-containing silicone oil cross-linking agent, a platinum catalyst, an inhibitor methyl butynol, cerium oxide and zinc oxide whiskers. During preparation, vinyl siloxane and 1 / 2 of white carbon black are subjected to vacuum banburying for 40 min at the temperature of 155 DEG C, the remaining white carbon black and hydroxyl silicone oil are added to be mixed for 50 min at the temperature of 125 DEG C, other components are sequentially added after cooling, and vulcanization is conducted at the temperature of 170 DEG C * 15 MPa. The shore A hardness of the obtained silicone rubber is greater than or equal to 63, the retention rate of elongation at break is greater than or equal to 485%, the retention rate of tensile strength after aging at 350 DEG C for 72 hours is greater than or equal to 86%, the thermal weight loss is 5%, the temperature is greater than or equal to 476 DEG C, the Mooney viscosity is less than or equal to 47, and the silicone rubber has excellent processability and high-temperature stability.

The invention relates to the technical field of underground cables, and provides a wear-resistant cable for a shield tunneling machine and a preparation method of the wear-resistant cable. The wear-resistant cable for the shield tunneling machine comprises a conductor, an insulating layer, an armor layer and a sheath layer which are sequentially arranged from inside to outside, and the sheath layer is prepared from the following raw materials in parts by weight: 90-100 parts of polyvinyl chloride, 8-14 parts of chlorinated polyethylene, 8-10 parts of a plasticizer, 9-16 parts of filler, 1-4 parts of a stabilizer, 1-2 parts of an antioxidant, 1-3 parts of a lubricant, 1-3 parts of a compatilizer and 1-2 parts of a vulcanizing agent; the chlorinated polyethylene comprises first chlorinated polyethylene and second chlorinated polyethylene; the Mooney viscosity of the first chlorinated polyethylene is 40-60 under the conditions of ML1 + 4 and 121 DEG C; and the Mooney viscosity of the second chlorinated polyethylene is 70-90 under the conditions of ML1 + 4 and 121 DEG C. According to the technical scheme, the problem of poor impact strength of the wear-resistant cable for the shield tunneling machine in the prior art is solved.

The invention provides a color mixing technology of colored rubber, which comprises the following steps: step S1, plasticizing natural rubber: plasticizing natural rubber raw materials in an internal mixer at 60-80 DEG C for 10-20 minutes, so that the Mooney viscosity of the natural rubber raw materials is reduced to 40-60; step S2, mixing and color mixing: quantitative color masterbatch is added into the plasticized natural rubber, the color masterbatch is selected from an organic pigment, an inorganic pigment or a mixture of the organic pigment and the inorganic pigment, and the adding amount of the color masterbatch is 0.3%-3% of the weight of the natural rubber; s3, composite foam molding: continuously compounding the natural rubber subjected to color mixing and a polyurethane coiled material in a double-screw extruder, and carrying out foam molding at 120-140 DEG C under the pressure of 8-12 MPa to form a double-sided different-color structure; s4, blanking and packaging: carrying out die cutting and blanking on the foamed and molded composite coiled material to prepare a yoga mat finished product with a specified size; according to the invention, a preset amount of color masterbatch can be added in a natural rubber mixing link, so that the natural rubber is colored rubber with a specified color after subsequent foaming molding.

The present invention discloses a method and system for predicting the tensile strength of natural rubber, which belongs to the field of data prediction technology. The method comprises: obtaining raw rubber to be tested; wherein the raw rubber to be tested is prepared from fresh latex of a rubber tree; obtaining measurement data of the raw rubber to be tested; wherein the measurement data of the raw rubber to be tested include initial plasticity value, plasticity retention rate, Mooney viscosity, nitrogen content, acetone soluble matter content, copper ion content and manganese ion content; inputting the measurement data of the raw rubber to be tested into a prediction model, and outputting the predicted tensile strength of the vulcanized rubber of the raw rubber to be tested. The testing method of the present application does not require a variety of special equipment and instruments, and solves the problems of the original testing process having multiple processes, multiple equipment, long time consumption, high cost, environmental pollution and the need for support from professional and technical personnel. The present application can simply, quickly and effectively obtain the tensile strength index value that characterizes the mechanical properties of natural rubber through seven quality indicators of raw rubber such as initial plasticity value.

This invention discloses a EPDM rubber and its preparation method, comprising copolymerizing the EPDM rubber from a first structural unit provided by ethylene, a second structural unit provided by propylene, and a third structural unit provided by a polyene monomer. This invention achieves precise control of the molecular structure of the EPDM rubber by introducing a polyene monomer with a specific structure as the third monomer, and combining it with a restricted geometry catalyst or a vanadium-based catalyst, thereby improving the uniformity of the copolymer and the vulcanization efficiency. The resulting rubber exhibits a narrow molecular weight distribution, suitable Mooney viscosity, and good processing properties, making it suitable for high-performance rubber products. The preparation method is simple, environmentally friendly, and easy to industrialize.

The application belongs to the field of rubber modification, and discloses a preparation method of polystyrene in-situ reinforced 1,2-polybutadiene rubber, a product and application. The preparation method comprises the following steps: (1) under a protective atmosphere, a styrene solution is subjected to a polymerization reaction in the presence of a first molybdenum catalyst to obtain a mixture containing polystyrene; (2) the mixture containing polystyrene is mixed with a second solvent, butadiene and a second molybdenum catalyst, and subjected to a second polymerization reaction under a protective atmosphere to obtain in-situ blended polystyrene / 1,2-polybutadiene rubber. The mechanical strength of the modified rubber is obviously improved, the Mooney viscosity is low, the processing performance is better, the molecular weight is high, the content of 1,2 structure is high, the wet skid resistance, heat generation and rolling resistance performance of the rubber are improved, the rubber is suitable for tires and products, the application range of 1,2-polybutadiene rubber is further widened, and the rubber has extremely high application value.

The present application relates to the technical field of rubber processing aids, and particularly relates to a dispersant for rubber, a preparation method and application thereof.The dispersant for rubber comprises the following raw materials in parts by weight: 20-30 parts of stearic acid, 5-10 parts of microcrystalline wax, 1-5 parts of monoglyceride fatty acid ester, 2-7 parts of dispersing aid, and 1-5 parts of modified sodium lignosulfonate.The dispersant for rubber can improve the wetting and coating capacity of fillers, reduce the Mooney viscosity of rubber compounds, and improve the flowability of mixing and processing.In addition, the dispersant for rubber can improve the dispersion uniformity of fillers in the rubber system, and improve the interfacial bonding strength between fillers and rubber.Meanwhile, the dispersant for rubber can effectively avoid the migration and blooming of small molecule additives, and improve the appearance stability of rubber products.

This modified conjugated diene polymer satisfies conditions (i) to (v) described below. Condition (i): The Mooney viscosity measured at 100ºC is 100 or more. Condition (ii): The glass transition temperature is -95°C to -45°C. Condition (iii): The content of silicon atoms is 170 ppm or more relative to the total amount of the modified conjugated diene polymer, and the mass ratio of the content of silicon atoms to the content of nitrogen atoms is 3 or more. Condition (iv): The modification rate is 70 mass% or more. Condition (v): The degree of branching (Bn) as determined by a GPC-light scattering measurement method with a viscosity detector is 6 or more.

The present invention provides organic particles with high solvent resistance, which are made from a polymer having a main skeleton of cis-1,4-polyisoprene, a typical example of which is natural rubber. [Solution] A method for producing organic particles includes the steps of dissolving a polymer having cis-1,4-polyisoprene as a main skeleton in a solvent and carrying out a cyclization reaction to obtain a cyclized rubber having a cyclization rate of 60 to 90%, and suspension polymerizing the cyclized rubber and a vinyl monomer in the presence of water and a suspension stabilizer, wherein the polymer having cis-1,4-polyisoprene as a main skeleton has a Mooney viscosity [ML(1+4)100°C] specified in JIS K 6300 of 18 to 65, and the vinyl monomer contains a monofunctional vinyl monomer having only one vinyl group and a crosslinkable vinyl monomer having multiple vinyl groups.

The present invention discloses a rubber plasticizing machine, comprising a water tank and a tube body, wherein a rotatable main shaft is provided in the tube body; a feed port is provided on the side wall of one end of the tube body, and a discharge port is provided at the other end of the tube body; a feed auger, a discharge disc and a disc cutter are nested on the main shaft; the feed auger and the cutter disc rotate synchronously with the main shaft; a heating plate and a fixed knife block are fixed on the outer wall of the tube body, the heating plate is attached to the outer wall of the tube body, and the fixed guide block extends into the tube body through the outer wall of the tube body. The present invention improves the structure of the existing cold water rubber kneading machine, on the one hand, reducing the slippage phenomenon caused by cold operation, and on the other hand, using circulating cold to balance the hot operation temperature, avoiding the problem of excessive viscosity or even carbonization of the rubber, thereby obtaining better kneading and shearing effects, so that the obtained rubber has better Mooney viscosity and better processing performance.

The present invention is an invention aimed at improving the air stability of conventional sulfide-based solid electrolytes, and includes sulfide-based solid electrolyte particles and a polymer coating layer formed on the sulfide-based solid electrolyte particles. The polymer coating layer contains a composite solid electrolyte containing a polymer having a Mooney viscosity (ML1+4, 100 °C) of 30 or more and 110 or less, and a all-solid-state battery including the same.

Provided are a conjugated diene-based polymer, a conjugated diene-based polymer composition, and a crosslinked product of a conjugated diene-based polymer, etc. that have no problems in practical use with processability and heat resistance and are excellent in compression set and cold resistance. The present invention provides a conjugated diene-based polymer satisfying the following mathematical expression (A): mathematical expression (A): 35 (%)≤100*(b+d) / (a+b+c+d)≤99 (%) wherein constituent molar ratios of respective structure units represented by the following structural formulas (1) to (4) are defined as a, b, c, and d, respectively, having a Mooney viscosity at 100° C. of 25 or more and 125 or less, having a glass transition temperature of −50° C. or less measured by differential scanning calorimetry (DSC), and having a crystallization peak-derived heat of crystallization of 2.5 J / g or more and 50 J / g or less.

The invention discloses a high-insulation heat-resistant ethylene propylene diene monomer rubber material which is prepared from the following raw materials in parts by weight: 40-50 parts of low-Mooney-viscosity ethylene propylene diene monomer rubber, 40-60 parts of medium-Mooney-viscosity ethylene propylene diene monomer rubber, 10-30 parts of high-Mooney-viscosity ethylene propylene diene monomer rubber, 5-15 parts of zinc oxide, 1-3 parts of stearic acid, 1-2 parts of an anti-aging agent MB, 1-2 parts of an anti-aging agent RD, 1-2 parts of a flow promoter and 2-10 parts of tackifying resin, 25-55 parts of carbon black, 40-75 parts of an inorganic filler, 1-2 parts of a coupling agent, 5-20 parts of a plasticizer, 4-12 parts of a vulcanizing agent and 1-5 parts of a cross-linking auxiliary agent; the inorganic filler is a combination of white carbon black and Create-E2; and the cross-linking auxiliary agent is a combination of a cross-linking auxiliary agent TAIC-70PD and a cross-linking auxiliary agent HVA-2. The EPDM rubber material disclosed by the invention has the effects of long-time high temperature resistance and high insulation.

This conjugated diene-based polymer comprises a structural unit derived from a conjugated diene-based compound, wherein: the content of a structural unit derived from an aromatic vinyl compound is 7% by mass or less; the 1,2-vinyl bond amount in the structural unit derived from the conjugated diene-based compound is 8-22 mol%; the modification rate is 30%-99%; the Mooney viscosity at 100°C is 25-130; the Mooney stress relaxation at 100°C is 0.30-0.85; and the total content of silicon and tin is 50 ppm or less.

The invention relates to a preparation process for preparing high-performance acrylate rubber by low-temperature emulsion polymerization, which belongs to the technical field of acrylate rubber synthesis, and adopts 5-10 DEG C low-temperature polymerization reaction in a ferrous ion-containing redox system to reduce the activation energy of free radicals, thereby realizing low-temperature initiated polymerization. A chain transfer reaction in a free radical polymerization process can be remarkably inhibited in a low-temperature polymerization environment, the branched chain content in a polymer molecular chain is reduced, and the gel content of a high-performance acrylate rubber product is further reduced; meanwhile, a trace amount of bifunctional acrylate chain extenders with reactive end groups are added in the polymerization process, so that the molecular weight of a main chain is increased in the free radical polymerization process, a stable crosslinking site is provided by matching with a crosslinking point monomer, the Mooney viscosity of the rubber is improved, and finally, the acrylate rubber with high Mooney viscosity and low gel content is prepared; the gel has excellent mechanical strength, and successfully solves the contradiction that the Mooney viscosity of the gel must be reduced in the prior art.

This invention belongs to the field of synthetic rubber preparation technology, specifically relating to low Mooney viscosity atactic 1,2-polybutadiene, its preparation method, and its applications. The preparation method of the low Mooney viscosity atactic 1,2-polybutadiene includes the following steps: under a protective gas atmosphere, adding a phosphate ester compound to a molybdenum compound, aging and cooling, then adding toluene to obtain a main catalyst; placing a trialkylaluminum alkane solution in an ice-water bath, adding aryloxy ligands dropwise to the container, and reacting in an ice-water bath to obtain a co-catalyst; dissolving butadiene in an alkane solution, adding the co-catalyst, main catalyst, activator, and molecular weight regulator respectively, and carrying out a polymerization reaction to obtain low Mooney viscosity atactic 1,2-polybutadiene. This invention provides a method for preparing low Mooney viscosity atactic 1,2-polybutadiene with high conversion rate; the obtained 1,2-PB has a low Mooney value and a high 1,2-structure content; it can be applied to rubber additives and damping materials to improve their performance.

The invention relates to the technical field of preparation of rubber composite materials, in particular to a glycerin-carbon black covalent conjugate, a rubber composite material and a preparation method of the glycerin-carbon black covalent conjugate. Acidifying the carbon black to oxidize carbon atoms at the edge or defect of the carbon black to generate carboxyl so as to obtain carboxylated carbon black; under a protective atmosphere, carrying out acylating chlorination on the carboxylated carbon black to obtain acylating chlorinated carbon black; under a protective atmosphere, acylation reaction is carried out by taking acylating chlorination carbon black and glycerol as a reaction system, and the glycerol-carbon black covalent conjugate is obtained. The rubber composite material is obtained by mixing and vulcanizing the glycerol-carbon black covalent conjugate, rubber, a cross-linking agent, an activating agent and an accelerant. According to the invention, the glycerol-carbon black covalent conjugate plays a role of'bridge-lubrication-synergistic reinforcement ', so that the Mooney viscosity is reduced, the fluidity is improved, the mechanical property is improved through chemical bonds, the dynamic heat generation is reduced, the wear resistance is enhanced, and the rubber composition is suitable for precise rubber products and has processability and performance advantages.

The present application relates to the field of elastomer material, in particular to a kind of preparation thermoplastic elastomer composition and thermoplastic elastomer and its preparation method and application.The composition includes: ternary ethylene-propylene rubber 100 parts by weight, natural rubber 10-100 parts by weight, polypropylene 40-200 parts by weight, vulcanizing agent 1-10 parts by weight and antioxidant 0.1-5 parts by weight, wherein the Mooney viscosity of the natural rubber is 30-120.The thermoplastic elastomer prepared by the composition of the present application has good wear resistance and mechanical properties, low cost and easy processing.

A rubber composition for a power-transmission belt includes: a polymer component including an ethylene-α-olefin elastomer; carbon black; and clay, in which the ethylene-α-olefin elastomer has a Mooney viscosity at 125° C. of 25 ML (1+4) 125° C. or less, the clay has a pH of 5.5 or higher, a total amount of the carbon black and the clay is 80 parts by mass to 180 parts by mass with respect to 100 parts by mass of the polymer component, and a mass ratio of the carbon black to the clay is clay / carbon black=0.2 / 1 to 1.2 / 1.

The invention relates to the technical field of industrial rubber roller materials, and particularly discloses a high-strength acid-resistant composite rubber material as well as a preparation method and application thereof. The high-strength acid-resistant composite rubber material is prepared from the following raw material components: a first rubber matrix, a second rubber matrix, inorganic filler, an antioxidant, an accelerant, an assistant crosslinker, a vulcanizing agent and a vulcanizing aid, wherein the first rubber matrix is prepared from tetrafluoroethylene-propylene rubber, fluororubber, nano titanium dioxide and polyurethane; the second rubber matrix comprises ethylene propylene diene monomer, ethylene-acrylate rubber and nano boron fibers; the inorganic filler comprises carbon black and nano barium sulfate. The composite rubber material provided by the invention has relatively high tensile strength, excellent acid resistance and relatively low Mooney viscosity. By utilizing the technical scheme of the invention, the problems of poor acid resistance, high Mooney viscosity and low tensile strength of the rubber material for the industrial rubber roller in the prior art are effectively solved, and a new design thought is developed for the rubber material for the industrial rubber roller.

The invention discloses a rubber compound for a T4-grade heat-resistant conveyor belt covering layer and a preparation method of the rubber compound, and belongs to the technical field of heat-resistant conveyor belts. The rubber compound is prepared from ethylene propylene rubber, polyisobutene, an active flowable agent, an anti-aging agent, a reinforcing agent, a plasticizer, a heat-resistant reinforcing agent, a vulcanizing agent, an assistant crosslinker and the like. The main body base material adopts low Mooney / medium-high ethylene content and high Mooney / high ethylene content ethylene-propylene rubber, and the molecular chain of the base material is completely saturated; an active lubricant zinc laurate is added to reduce the Mooney viscosity of the rubber compound and improve the processability, and polyisobutene is added to further reduce the Mooney viscosity of the rubber compound and improve the autohension of the rubber compound; the anti-aging agent RD, the anti-aging agent MB and the anti-aging agent GS are combined according to a certain proportion, and through synergistic cooperation, the protection effect is excellent.

The present invention provides a method for controlling Mooney viscosity of peroxide-cured fluororubber. The method comprises: adding an initiator solution in a continuous supplementary manner during the emulsion polymerization process of a peroxide-cured fluororubber until 5 to 10 minutes before the end of the polymerization reaction; wherein the amount of the initiator solution added initially is 0.1% to 0.5% of the total amount of the polymerization monomer dry materials, and the amount of the initiator solution continuously supplemented is 0.1% to 2% of the total amount of the polymerization monomer dry materials, based on the initiator. The present invention effectively controls the Mooney viscosity value of the peroxide-cured fluororubber within the desired range with small fluctuations by controlling the amount and the manner of addition of the initiator, thereby obtaining a peroxide-cured fluororubber with stable and controllable quality. Moreover, the present invention does not need to add a chain transfer agent, which reduces the amount of additives in the polymerization process, and meanwhile improves the reaction activity of the polymerization system, effectively shortens the time for polymerization, and is beneficial to industrialized production.

To obtain desirable rheological properties (e.g., Mooney viscosity).SOLUTION: A polymeric composition comprising a plurality of hydrocarbyloxysilyl terminated polydienes or polydiene copolymers, wherein the polymeric composition has an aged Mooney (ML1 + 4 at 100 °C) of from about 40 to about 105, wherein the polymeric composition comprises from about 10 to about 95 mole% of said hydrocarbyloxysilyl terminated polydienes or polydiene copolymers, wherein said hydrocarbyloxysilyl terminated polydienes or polydiene copolymers are formed by reacting a reactive polydiene or polydiene copolymer with a dihydrocarbyloxysilyl endblocker.SELECTED DRAWING: None

To provide a thermoplastic vulcanizate (TPV) composition containing a metallocene-based multimodal copolymer rubber.SOLUTION: The TPV composition comprises (a) ethylene-derived unit, from greater than 50 wt.% to less than 100 wt.% of a major polymer fraction having Mooney viscosities from about 15ML (1 + 4 @ 125 °C) to about 120ML (1 + 4 @ 125 °C), from greater than 0 wt.% to less than 50 wt.% of a minor polymer fraction having Mooney viscosities from about 120ML (1 + 4 @ 125 °C) to about 1500ML (1 + 4 @ 125 °C), average molecular weight distributions (Mw / Mn) from about 2.0 to about 4.5, an average branching index from about 0.7 to about 1.0; And less than 10 parts by weight of oil per 100 parts by weight of the multimodal copolymer rubber; (b) at least one other oil; (c) at least one thermoplastic polymer; and (d) a cure system comprising at least one cure material and at least one curative.SELECTED DRAWING: None

The utility model relates to the field of doorney viscosity appearance technology especially, and it is a kind of quick heat conduction doorney viscosity appearance.The quick heat conduction doorney viscosity appearance includes doorney viscosity appearance body, upper die assembly and lower die assembly, the upper die assembly and lower die assembly are both included two and set in doorney viscosity appearance body, the upper die assembly and lower die assembly center symmetry, and the doorney viscosity appearance body is equipped with the support component of the installation of upper die assembly and lower die assembly;The support component is equipped with two groups and in the internal center symmetry of doorney viscosity appearance body.The quick heat conduction doorney viscosity appearance provided by the utility model can drive rotation to upper die assembly and lower die assembly, moves the upper die assembly and lower die assembly of next group to relative part, so new principle can be tested, and then the time of the device in raw material replacement installation can be reduced, so the portability and work efficiency of the device later operation can be improved.