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WO2015109791A1 - Composition de caoutchouc ayant du caoutchouc naturel/noir de carbone et un caoutchouc polyisoprène synthétique/noir de carbone blanc comme mélange maître et son procédé de fabrication - Google Patents

Composition de caoutchouc ayant du caoutchouc naturel/noir de carbone et un caoutchouc polyisoprène synthétique/noir de carbone blanc comme mélange maître et son procédé de fabrication Download PDF

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Publication number
WO2015109791A1
WO2015109791A1 PCT/CN2014/082701 CN2014082701W WO2015109791A1 WO 2015109791 A1 WO2015109791 A1 WO 2015109791A1 CN 2014082701 W CN2014082701 W CN 2014082701W WO 2015109791 A1 WO2015109791 A1 WO 2015109791A1
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Prior art keywords
rubber
carbon black
parts
mass
masterbatch
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Ceased
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PCT/CN2014/082701
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English (en)
Chinese (zh)
Inventor
王梦蛟
周宏斌
石超
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EVE RUBBER INSTITUTE Co Ltd
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EVE RUBBER INSTITUTE Co Ltd
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L9/00—Compositions of homopolymers or copolymers of conjugated diene hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J3/00—Processes of treating or compounding macromolecular substances
    • C08J3/20—Compounding polymers with additives, e.g. colouring
    • C08J3/22—Compounding polymers with additives, e.g. colouring using masterbatch techniques
    • C08J3/226—Compounding polymers with additives, e.g. colouring using masterbatch techniques using a polymer as a carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/002—Methods
    • B29B7/005—Methods for mixing in batches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
    • B29B7/283—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring data of the driving system, e.g. torque, speed, power
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B7/00—Mixing; Kneading
    • B29B7/02—Mixing; Kneading non-continuous, with mechanical mixing or kneading devices, i.e. batch type
    • B29B7/22—Component parts, details or accessories; Auxiliary operations
    • B29B7/28—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control
    • B29B7/286—Component parts, details or accessories; Auxiliary operations for measuring, controlling or regulating, e.g. viscosity control measuring properties of the mixture, e.g. temperature, density
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/02—Elements
    • C08K3/04—Carbon
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • C08K3/36—Silica
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L7/00—Compositions of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2407/00—Characterised by the use of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2409/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K2201/00—Specific properties of additives
    • C08K2201/002—Physical properties
    • C08K2201/006—Additives being defined by their surface area
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend

Definitions

  • the present invention relates to the field of rubber, and more particularly to the field of rubber products and rubber processing.
  • Energy loss in rubber during dynamic use is one of its basic characteristics, which is caused by rubber lag loss.
  • the hysteresis loss increases, the consumption and heat generation of the rubber compound increase during the dynamic deformation process, which causes the temperature of the rubber compound to rise, which in turn causes the strength and wear resistance of the rubber compound to decrease, resulting in early damage of tires and other products; more importantly, Increase tire rolling resistance, increase fuel consumption (fuel consumption), and increase carbon dioxide emissions.
  • Patent CN1539872A proposes a rubber formulation which is compatible with wet skid resistance and tire rolling resistance.
  • the composition of the composition is polyolefin and carbon black, white carbon black, and til silane.
  • the patent CN1141311A and the patent CN1141313A disclose a tread formulation in which a diene rubber is added to white carbon black and carbon black. The process is a conventional mixing process, and the filler and the auxiliary agent are added to the diene polymer for kneading.
  • Patent CN1134434A discloses elastomers, silica, carbon black compounds which have a carbon black content limit of less than 30 parts by mass and a combined ratio of silica to carbon black in the range of from 3/1 to 30/1.
  • Patent CN1140129A stipulates that the ratio of white carbon black/carbon black is at least 10:1, and the amount of carbon black is small, which is not good for wear resistance.
  • These patents all use the traditional mixing process. Carbon black/silica is added to the rubber together with the additives.
  • the carbon black/white carbon black inevitably needs non-rubber components such as adsorption aids, which reduces the combination of filler and rubber. It also reduces wear resistance.
  • the invention intends to design a rubber composition through a new mixing process, so that the carbon black/white carbon black is first combined with the rubber and then mixed with other rubber auxiliaries, and the ware is reduced in the premise of maintaining the wear resistance. Thermal properties improve the elasticity of the compound. Summary of the invention
  • an object of the present invention is to provide a rubber composition using natural rubber/carbon black, synthetic polyisoprene rubber/white carbon black as a masterbatch, and a processing technique thereof.
  • the use of solution to synthesize a polyisoprene polymer with a single component and a small non-rubber component, when preparing a synthetic polyisoprene white carbon When the black masterbatch is used, the surface of the white carbon black does not adsorb the rubber component, and the coupling agent acts to make the white carbon black better combined with the rubber, thereby improving the wear resistance and reducing the heat generation.
  • the rubber composition prepared in accordance with the teachings of the present invention, for use in a tire tread can reduce the heat build-up of the tire and the rolling resistance of the tire while maintaining wear resistance.
  • the present invention further relates to the following embodiments:
  • a rubber composition comprising natural oak carbon black and synthetic polyisoprene rubber J3 ⁇ 4/silica black masterbatch and a preparation process thereof, characterized in that:
  • Carbon black masterbatch process natural rubber and carbon black are mixed in an internal mixer to form carbon black masterbatch;
  • Silica black masterbatch process synthetic polyisoprene rubber and white carbon black, coupling agent is mixed in an internal mixer to form white carbon black masterbatch;
  • the carbon black masterbatch, the silica masterbatch, the antioxidant, the active agent, the accelerator, and the vulcanizing agent are kneaded in a composition ratio to prepare a rubber composition.
  • the ratio of the amount of the natural rubber to the synthetic polyisoprene rubber is 1:3-5:1 in terms of the total amount of the rubber, and the ratio of the carbon black/white carbon black is combined with the natural face.
  • the proportion of isoprene rubber is kept at a certain ratio, generally the ratio of the two fillers is kept consistent with the ratio of the two rubbers;
  • the total amount of carbon black and white carbon black is 5 to 120 parts by mass, preferably 10 to 100 parts by mass;
  • the carbon black masterbatch is used in an amount of 5 to 100 parts by weight of the natural rubber, preferably 3 to 4 parts by weight; and the white carbon black masterbatch is 100 parts by mass of the synthetic polyisoprene rubber.
  • the amount of white carbon black is 5 to 100 parts, preferably -80 parts, and the amount of the coupling agent is 0.5% by weight to 20% by weight of the white carbon black, preferably 1% by weight to 15% by weight ;
  • the natural rubber comprises a standard rubber, a gutta percha, a tobacco sheet glue, a silver inulin; wherein the synthetic polyisoprene rubber is a cis-polyisoprene rubber, a trans-polyisoprene rubber or a mixture of them.
  • the carbon black is any carbon black, preferably a carbon black having a surface area of 3 ⁇ 470-180 m 2 /g and a DBP absorption value of 60-150 (1 (T 5 m 3 /kg)).
  • leg white carbon black is any white carbon black, preferably precipitation method White carbon black having a specific surface area of 50 to 200 m 2 /g.
  • the coupling agent comprises the most commonly used bis(triethoxypropylsilane) tetrasulfide and disulfide, 3-thiocyanopropyl-triethoxysilane, ⁇ - a mercapto-trimethoxysilane, a zirconate coupling agent, a phthalate coupling agent, a nitro coupling agent, an alcohol compound, and the alcohol compound includes, but not limited to, propanol, butanol, ethylene glycol, Polyethylene glycol and its derivatives.
  • the activator is one or more of a combination of a metal oxide and a fatty acid and a fatty acid metal soap salt
  • the base metal oxide is one or more of zinc oxide, magnesium oxide, etc.
  • the salt is one or more of zinc stearate and zinc borate.
  • the antioxidant includes one or more of an amine antioxidant, a quinoline antioxidant, a benzimidazole antioxidant, and a protective wax.
  • the accelerator includes, but is not limited to, a sulfenamide accelerator, a thiazole accelerator, a granule, a steroid accelerator, or a combination thereof
  • the vulcanizing agent includes, but not limited to, sulfur, Insoluble sulfur, oil-filled sulfur, sulfur donor or a combination thereof.
  • the present invention also relates to a rubber compound or gel which is prepared according to the above preparation method.
  • the mixing process further involved in the present invention includes the following three process steps:
  • Carbon black masterbatch natural rubber and carbon black are mixed in any internal mixer, the rotation speed is 20-90 rpm, the mixing time is l-10min, and the rubber discharge is 3 ⁇ 43 ⁇ 4t less than 165 °C ;
  • White carbon black masterbatch Synthetic polyisoprene rubber and white carbon black and a certain amount of organic coupling agent are mixed in any internal mixer, $3 ⁇ 43 ⁇ 4 20-90 ⁇ , mixing time is l-10min, debinding The 3 ⁇ 43 ⁇ 4t control is lower than 170 ° C, and the mixing 3 ⁇ 43 ⁇ 4t is maintained at 130-165 ° C for 0.5-4 min ;
  • the carbon black masterbatch and the white carbon black masterbatch are mixed in an internal mixer for 0.5 min to 3 min according to the composition ratio, and then the activator, the anti-aging agent, etc. are added, and the mixing car is 20-90 rpm, and the kneading time is l- 10min ;
  • the masterbatch produced in the second step is kneaded with a vulcanizing agent and an accelerator in any internal mixer at a rotational speed of 1040 rpm and a mixing time of l-8 min.
  • the total amount of carbon black and white carbon black is from 5 to 120 parts by mass, preferably from 10 to 100 parts by mass, based on 100 parts by mass of the total amount of the rubber, wherein the carbon black is any carbon black.
  • the carbon black is any carbon black.
  • specific surface area of silica is preferably 50- 200 m 2 / g precipitated silica.
  • the ratio of natural rubber to synthetic polyisoprene rubber is 1:3 - 5:1.
  • the proportion of carbon black/white carbon black is generally the same as that of natural face synthetic polyisoprene rubber, and may be different.
  • the activator may be selected from zinc oxide, stearic acid, zinc stearate, magnesium oxide, zinc borate, etc., and the amount is generally 1-10 parts by mass, excellent; ⁇ 2-5 parts by mass; the antioxidant is p-phenylenediamine
  • the vulcanizing agent may be selected from ordinary sulfur powder, oil-filled sulfur, Insoluble sulfur, oil-insoluble, insoluble sulfur, etc., the amount of use is 0.2 to 10 parts by mass, preferably 5-5 parts by mass; and J is a promoter of rum and sulfenamide
  • the agent, the zinc carbamate type touch agent, the cockroach type touch agent or a combination thereof, the amount is generally ⁇ 0.2-8 parts by mass, preferably
  • Organosilane coupling agent X50S Contains 50% bis(3-ethylidene silane) tetrasulfide, containing 50% N330 carbon black, Evonik Iridium (Rizhao) Chemical Industry Co., Ltd.;
  • White carbon black 833MP Wuxi Hengcheng Co., Ltd.
  • Zinc Oxide Dalian Zinc Oxide Plant
  • Antioxidant 020 ⁇ -(1.3-dimethylbutyl)-indole,-phenyl-p-phenylenediamine, Jiangsu Shengao Chemical Technology Co., Ltd.;
  • Antioxidant RD 2,2,4-trimethyl-1, 2-dihydroquinoline polymer, Tianjin Kemai Auxiliary Co., Ltd.;
  • Protective wax Baimeirui 3 ⁇ 4 Chemicals (Suzhou) Co., Ltd.;
  • Promoter CZ ⁇ -cyclohexyl-2-benzothiazole sulfenamide, Shandong Shanghao Chemical Co., Ltd.; sulfur: Qingdao Jinyuling Industrial Co., Ltd.;
  • the amounts of the components in the following examples and comparative examples are parts by mass.
  • Formulation SMR2050; synthetic polyisoprene rubber IR 50; N234 carbon black 25; white carbon black 833MP25; silane coupling agent X50S 6; antioxidant RD 1.5; antioxidant 40202; zinc oxide 3; stearic acid 2; Wax 1; sulfur yellow 1; accelerator CZ 1.5.
  • a mixing process 50 parts by mass of SMR20 and 50 parts by mass of IR in a 90 rpm internal mixer, kneading for 60 seconds, adding a top plug to add 25 parts by mass of carbon black N234, 25 parts by mass of white carbon black 833MP, 6 parts by mass of silane coupling agent X50S, 1.5 parts by mass of antioxidant RD, 3 parts by mass of zinc oxide, 2 parts by mass of stearic acid, parts by mass of antioxidant 020, protective wax 1, and 60 seconds after compounding , cleaning, re-kneading for 90 seconds, the pressure mixing time is 210 seconds, and the glue is 3 ⁇ 43 ⁇ 4t l58 °C;
  • the final rubber mixing process 165.5 parts by mass of a batch of mixed masterbatch at the internal pressure of 60 rpm, after 30 seconds of mastication, the top plug is added with 1 part by mass of sulfur and 1.5 parts by mass of accelerator CZ; After 60 seconds of cleaning; after 30 seconds of mixing, the rubber is discharged, the pressure mixing time is 120 seconds, and the glue is 3 ⁇ 43 ⁇ 4t l03 ° C; Formulation: SMR20 50; Synthetic polyisoprene t-gel IR 50; N234 carbon black 25; Silica black 25; silane coupling agent X50S 6; antioxidant RD 1.5; antioxidant 4020 2; household wax 1; zinc oxide 3; stearic acid 2; sulfur 1;
  • Carbon black masterbatch process 50 parts by mass of SMR20 is added to the internal mixer at 90 rpm for 50 seconds, and the top plug is applied. 17 parts by mass of carbon black N234 is added, and the top plug is cleaned after 90 seconds of mixing. The remaining 8 parts by mass of carbon black N234 was poured into the mixture, and the top plug was cleaned for 30 seconds, and the topping was cleaned for 30 seconds; the pressure mixing time was 200 seconds, and the discharge temperature was 157 °C.
  • White carbon black masterbatch process 50 parts by mass of synthetic isoprene IR is injected into the internal mixer with a 90 rpm key, and after mixing for 50 seconds, the plug is added with 17 parts by mass of white carbon and 4 parts by mass of silane.
  • Coupling agent X50S after 60 seconds of mixing, put the top plug to add the remaining 8 parts by mass of silica and 2 parts by mass of silane coupling agent X50S; mix for 30 seconds, top plug cleaning, kneading for 60 seconds, and pressurizing and kneading The time is 200 seconds, and the glue is 3 ⁇ 43 ⁇ 4t l54 °C ;
  • Two-stage mixing process In a 90 rpm internal mixer, 75 parts of carbon black masterbatch and 81 parts by mass of silica black masterbatch were added, and the top plug was kneaded for 80 seconds, and 1.5 parts by mass of antioxidant RD and 2 parts by mass were added.
  • Antioxidant 4020 1 part by mass of protective wax, 3 parts by mass of zinc oxide, 2 parts by mass of stearic acid; 70 seconds of mixing; 30 seconds of rubber compounding; 180 seconds of pressure mixing time, 3 ⁇ 43 ⁇ 4t l53 °C ;
  • the elasticity was improved, the heat generation by compression was lowered, and the abrasion performance was improved, indicating that when the kneading process of the present invention was employed, the heat generation was lowered, the elasticity was improved, and the abrasion resistance was improved.
  • Formulation SMR20 100; N115 carbon black 20; white carbon black 30; silane coupling agent X50S 7.2; anti-aging agent RD 1.5; anti-aging agent column 2; protective wax 1; zinc oxide 3; stearic acid 2; sulfur 1; CZ 1.5.
  • a mixing process At $3 ⁇ 4! 100 parts by mass of 20# standard glue was added to the internal mixer of 90 rpm, and after 60 seconds of mastication, 20 parts by mass of carbon black N115, 30 parts by mass of white carbon black, 7.2 parts by mass of X50S, and 3 parts by mass of zinc oxide, 2 were added. Parts by mass stearic acid, 1.5 parts by mass of antioxidant RD, 2 parts by mass of antioxidant 020, 1 part by mass of protective wax, 60 seconds of mixing, topping 155 sweep, mixing 90 seconds of debinding, pressurizing mixing time For 210 seconds, the glue is 3 ⁇ 43 ⁇ 4t l63 °C.
  • Silica black masterbatch process 20 parts by mass of trans-polyisoprene and 40 parts by mass of cis-polyisoprene were vigorously introduced into an internal mixer of 90 rpm. After mixing for 50 seconds, add 20 parts by mass of silica and 4.8 parts by mass of no silane coupling agent X50S. After mixing for 80 seconds, lift the top plug and apply 10 parts by mass of silica and 2.4 parts by weight of silane. X50S, mixing for 0 seconds, lifting the top plug, mixing for 40 seconds; the pressure mixing time is 210 seconds, and the discharge temperature is 158 °C.
  • Trans isoprene TPI Mooney has high viscosity and is difficult to process.
  • cis isoprene with lower Mooney IR is used in combination with TPI, which have the same structural unit and good compatibility. Solved the 185 shortcomings of TPI processing difficulties.
  • the tensile strength and the tear strength of Example 2 were both higher than that of Comparative Example 2, and the temperature rise at the bottom of Example 2 was lower than that of Comparative Example 2, and the abrasion resistance was improved.
  • Formulation SMR20 ⁇ ; ⁇ 234 carbon black 30; white carbon black 20; silane coupling agent X50S 5; anti-aging agent RD 1.5; anti-aging agent shed 2; zinc oxide 3; stearic acid 2; sulfur yellow 1; accelerator CZ 1.5.
  • Two-stage process Add 164.5 parts by mass of a batch of mixed masterbatch in an internal mixer of 60 rpm. After mastication for 30 seconds, add a top plug to add 1 part by mass of sulfur and 1.5 parts by mass of accelerator CZ; mix for 60 seconds. After cleaning; after 30 seconds of mixing, the rubber is discharged, the pressure mixing time is 120 seconds, and the discharge temperature is 104 ° C;
  • Formulation SMR20 60; Synthetic polyisoprene rubber IR 40; N234 carbon black 30; Silica 20; Silane 200 coupling agent X50S 5; Antioxidant RD 1.5; Antioxidant 4020 2; Protective wax 1; ; stearic acid 2; sulfur yellow 1; accelerator CZ 1.5.
  • Carbon black masterbatch process 60 parts by weight of 20# standard glue is added to the internal mixer at 90 rpm, after 20 seconds of mastication, 20 parts by mass of carbon black N234 is added, and the top plug is cleaned for 80 seconds, and 10 mass is added.
  • the carbon black N234, 205 was mixed for 30 seconds to clean the top plug, and the rubber was mixed for 0 seconds.
  • the pressure mixing time was 200 seconds, and the rubber discharge temperature was 157 °C.
  • Silica black masterbatch process 40 parts by mass of trans-polyisoprene is synthesized in a 90 rpm internal mixer, and after mixing for 50 seconds, the plug is added with 13 parts by mass of white carbon black 833 ⁇ and 3.5 parts by mass.
  • a mixture of silane coupling agent X50S after 80 seconds of mixing, the top plug was cleaned, and a mixture of 7 parts by mass of white 833 ⁇ and 1.5 parts by mass of silane X50S was added, and the mixture was kneaded for 40 seconds, and the top plug was cleaned and kneaded for 0 seconds.
  • Discharge the pressurization mixing time is 210 seconds, and the discharge temperature is 210 degrees Celsius.
  • Example 3 has improved elasticity, reduced heat generation and improved wear performance, indicating that when the mixing process of the present invention is employed, heat generation is reduced, elasticity is improved, and abrasion resistance is improved. improve.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

La présente invention est caractérisé par le pré-mélange d'un caoutchouc naturel/noir de carbone et d'un caoutchouc polyisoprène synthétique/noir de carbone blanc pour préparer un mélange maître, et puis l'ajout d'auxiliaires de caoutchouc selon un rapport de composition pour préparer un caoutchouc composé. L'invention porte également sur un procédé de fabrication. Dans le mélange maître de noir de carbone de la composition, sur la base de 100 parties en masse du caoutchouc naturel, la quantité du noir de carbone utilisée est de 5 à 120 parties en masse, de préférence de 20 à 80 parties en masse, le rapport de quantité du caoutchouc naturel au caoutchouc polyisoprène synthétique étant de 1:3 à 5:1, le rapport de quantité de noir de carbone/noir de carbone blanc étant maintenu dans un certain rapport en ce qui concerne le rapport de quantité de caoutchouc naturel/caoutchouc polyisoprène synthétique, et, en général, le rapport des deux charges est maintenu constant avec le rapport des deux caoutchoucs. Une composition préparée à l'aide de la composition de caoutchouc selon la présente invention et son procédé de préparation présentent les avantages d'une bonne résistance à l'abrasion, d'une élasticité élevée et d'une faible génération de chaleur, et peuvent être utilisés dans des préparations pour des pneus ainsi que pour d'autres produits en caoutchouc.
PCT/CN2014/082701 2014-01-23 2014-07-22 Composition de caoutchouc ayant du caoutchouc naturel/noir de carbone et un caoutchouc polyisoprène synthétique/noir de carbone blanc comme mélange maître et son procédé de fabrication Ceased WO2015109791A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410031929.0A CN103772760A (zh) 2014-01-23 2014-01-23 一种以天然橡胶/炭黑、合成聚异戊二烯橡胶/白炭黑为母胶的橡胶组合物及其加工工艺
CN201410031929.0 2014-01-23

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