WO2013060290A1 - 一种橡胶组合物及其制备方法和其硫化胶 - Google Patents
一种橡胶组合物及其制备方法和其硫化胶 Download PDFInfo
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- WO2013060290A1 WO2013060290A1 PCT/CN2012/083590 CN2012083590W WO2013060290A1 WO 2013060290 A1 WO2013060290 A1 WO 2013060290A1 CN 2012083590 W CN2012083590 W CN 2012083590W WO 2013060290 A1 WO2013060290 A1 WO 2013060290A1
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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
- C08L7/00—Compositions of natural rubber
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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
- C08L9/06—Copolymers with styrene
- C08L9/08—Latex
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C1/00—Tyres characterised by the chemical composition or the physical arrangement or mixture of the composition
- B60C1/0016—Compositions of the tread
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- 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
- C08J3/005—Processes for mixing polymers
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- 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
- C08J3/24—Crosslinking, e.g. vulcanising, of macromolecules
- C08J3/26—Crosslinking, e.g. vulcanising, of macromolecules of latex
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- 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
- C08J3/28—Treatment by wave energy or particle radiation
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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
- C08L21/00—Compositions of unspecified rubbers
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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
- C08L23/00—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers
- C08L23/02—Compositions of homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Compositions of derivatives of such polymers not modified by chemical after-treatment
- C08L23/18—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms
- C08L23/20—Homopolymers or copolymers of hydrocarbons having four or more carbon atoms having four to nine carbon atoms
- C08L23/22—Copolymers of isobutene; Butyl rubber ; Homo- or copolymers of other iso-olefins
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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
- C08L9/06—Copolymers with styrene
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- 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
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
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- 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
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/06—Copolymers with styrene
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- 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
- C08J2309/00—Characterised by the use of homopolymers or copolymers of conjugated diene hydrocarbons
- C08J2309/06—Copolymers with styrene
- C08J2309/08—Latex
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- 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
- C08J2321/00—Characterised by the use of unspecified rubbers
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- 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
- C08J2409/02—Copolymers with acrylonitrile
- C08J2409/04—Latex
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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
- 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
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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
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/22—Mixtures comprising a continuous polymer matrix in which are dispersed crosslinked particles of another polymer
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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
- C08L2312/00—Crosslinking
- C08L2312/06—Crosslinking by radiation
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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
- C08L2555/00—Characteristics of bituminous mixtures
- C08L2555/20—Mixtures of bitumen and aggregate defined by their production temperatures, e.g. production of asphalt for road or pavement applications
- C08L2555/22—Asphalt produced above 140°C, e.g. hot melt asphalt
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Definitions
- the present invention relates to the field of rubber, and more particularly to a rubber composition modified by rubber particles, a preparation method thereof and a polishing agent thereof.
- Tire rolling resistance is also one of the important factors. Tire rolling resistance fuel consumption accounts for 14-17% of car fuel consumption, and tire rolling resistance decreases: ⁇ 0%, usually Reduce fuel consumption by ⁇ 2% Therefore, reducing tire rolling resistance is one of the important measures to reduce fuel consumption.
- a rubber gel prepared by a direct polymerization method or a chemical crosslinking method such as a peroxide can improve the performance of the gel after the formulation is appropriate.
- the European patent and the German patent DE 4220563 respectively report that a neoprene gel and a cis-T rubber gel are separately added to the rubber composition to improve the wear resistance and fatigue temperature rise of the disc rubber, but the wet skid resistance is lost.
- US Patent No. S61842% uses surface-modified cis-butyl and butadiene rubber gels (the latex particles in the gel swell) The index 4 ⁇ 5, particle size 60 ⁇ 450 ⁇ m ), the rolling resistance of the natural rubber ( NR ) formula system bowl rubber is reduced, and the strong performance is not affected.
- the chloromethyl benzene is grafted onto the butyl surface, and then used in the NR formulation system to reduce the rolling resistance of the bismuth rubber and improve the wet skid resistance.
- U.S. Patent No. 6,207,757 uses chloromethylstyrene modified styrene butadiene rubber to reduce the rolling resistance of the NR formulation system and improve the traction performance and durability of the tire.
- U.S. Patent No. 6,242,534 uses a styrene-butadiene rubber gel containing a few bases and a # base to the NR formulation system, which not only reduces the rolling resistance of the system, but also improves the wet skid resistance and significantly improves the tensile stress.
- the specific gravity of the vulcanizate is also small.
- U.S. Patent No. 6,699,935 uses a copolymerized modified styrene butadiene rubber gel to impart a low rolling resistance to the modified styrene butadiene rubber formulation system and excellent wet skid resistance and wear resistance.
- the rubber gels mentioned in the above patent documents are all crosslinked by chemical crosslinking method. This method requires the use of higher-priced cross-linking monomers and consumes more energy, and mainly involves natural rubber formula systems or styrene-butadiene rubber. White carbon black system and modified styrene-butadiene rubber formula system. It is also important to improve the rolling resistance, wet skid resistance and wear resistance only after the rubber gel obtained by crosslinking has been modified. ⁇ Although the particle size of the rubber gel is reported in these patents, can the particle size of the first grade be dispersed when it is dispersed in the bowl gel? The modification of rubber gels has not been reported in any patent. Summary of the invention
- the rubber composition of the rubber composition is improved in wet skid resistance, rolling resistance and abrasion resistance, and can be used as an excellent automotive tread rubber.
- Another object of the present invention is to provide a method of preparing the disclosed elastomeric composition.
- Still another object of the present invention is to provide a bowling gel of the rubber composition.
- the international patent application WOO1/40356 (priority ⁇ 1999/February 3 U) submitted by the applicant on September 18, 20th, and the international patent application W submitted by the applicant on June 15th, 1st, 1st A fully vulcanized powdered rubber is disclosed in «!/98395 (Priority ⁇ 2 «June 06 IS).
- the latex particles (rubber particles) in the rubber latex reach a certain amount of gel due to the irradiation cross-linking, and the particle size of the latex particles is fixed, and will not be after Adhesive or coagulated during the drying process.
- the inventors found in the study that the radiation-crosslinked rubber latex and the uncrosslinked styrene-butadiene rubber latex were mixed, and then coagulated to obtain a crosslinked rubber particle-modified styrene-butadiene rubber rubber composition. .
- the rubber particles having a crosslinked structure which are crosslinked by irradiation do not stick and coagulate, and the latex particles of the ordinary uncrosslinked styrene-butadiene rubber latex are coagulated, so that the rubber particles having a crosslinked structure are
- the particle size of the original particles is dispersed in the raw body of the uncrosslinked styrene-butadiene rubber, and the uniformity of the ⁇ 3 ⁇ 4 is more than that of the whole
- the mixture of the powdered powder and the raw rubber is much better.
- the rubber composition obtained by coagulating the two types of latex is deuterated and finally prepared into a bismuth gel.
- the rubber particles after irradiation crosslinking have a crosslinked structure, it is not necessary to consider vulcanization of the dispersed phase, thus solving The problem of common dishing of compositions composed of different rubbers; at the same time, the crosslinked crosslinked rubber particles are still very uniformly dispersed in the styrene butadiene rubber with very small original particle size, so the final The wet-slip resistance, rolling resistance and abrasion resistance of the obtained vulcanizate can be simultaneously improved.
- a rubber composition of the present invention comprises an uncrosslinked rubber and rubber particles having a crosslinked structure dispersed therein.
- the uncrosslinked rubber is a continuous phase
- the rubber particles having a crosslinked structure are dispersed phases.
- the rubber particles having a crosslinked structure are synthetic rubber particles or/and natural rubber particles, and may be, for example, any one or more of the following: natural rubber particles, styrene-butadiene rubber particles, styrene-butadiene rubber particles, nitrile rubber particles, Carboxy-butadiene rubber particles, neoprene particles, polybutadiene rubber particles, broken rubber particles or acrylate rubber particles, styrene-butadiene rubber particles, etc., any one or more of the following: nitrile rubber particles, butyl
- the benzopyrene rubber particles, the styrene-butadiene rubber particles, and the carboxylated styrene-butadiene rubber particles are more
- the average dispersed particle diameter is 2O ⁇ SO0nm, preferably 50 ⁇ 300nm, more preferably 50 ⁇ 200nm, the gel content is 6 ⁇ % by weight or higher;
- the uncrosslinked rubber is butyl phthalate;
- the weight ratio of the structural rubber particles to the uncrosslinked rubber is I: 99-2: 80, preferably 1: 99-10: 90, more preferably 2: 98-8: 92.
- the rubber particles having a crosslinked structure as described above have a homogeneous structure. Moreover, no bonding modification or surface modification is performed. More preferably, the rubber particles having a crosslinked structure have a gel content of 75% by weight or more, more preferably 80% by weight or more, and an average particle diameter of from 50 to 30 ⁇ m, more preferably S « To 200nm.
- the rubber composition of the present invention comprises a mixture of a non-crosslinked rubber latex and a component of a rubber particle having a crosslinked structure, and is obtained by coagulating: a rubber particle having a crosslinked structure.
- the latex is a rubber latex obtained by irradiation crosslinking.
- the method for preparing the rubber composition of the present invention comprises the following steps:
- the rubber latex is cross-linked by irradiation, so that the rubber particles in the latex have a cross-linked structure to reach the gel content, and the rubber particles in the milk are fixed within the average particle size range;
- the above-mentioned radiation crosslinked rubber latex is mixed with the uncrosslinked styrene butadiene rubber latex to be uniform;
- the T benzene rubber latex is a synthetic rubber latex commonly used in the prior art, and comprises a latex polybutadiene latex prepared directly by the emulsion polymerization method in the prior art and a latex obtained by emulsifying the styrene-butadiene block gel prepared by any existing method; An emulsion polystyrene-butadiene latex prepared directly in the prior art emulsion polymerization process.
- the rubber latex before radiation crosslinking is a synthetic rubber latex or/and a natural rubber latex commonly used in the prior art, including any one of the following: natural rubber latex, styrene-butadiene rubber latex, carboxylated styrene-butadiene rubber latex, Nitrile rubber latex, carboxylated nitrile rubber latex, neoprene latex, polybutadiene rubber latex, rubber latex or acrylate rubber latex, styrene-butadiene rubber latex, etc., preferably any one or the other of the following: nitrile rubber Latex, styrene-butadiene rubber latex, styrene-butadiene latex, carboxylated rubber latex, more preferably any one or more of the following: styrene-butadiene rubber latex, carboxylated styrene-butadiene rubber latex, T-nitrile rubber latex
- the irradiation cross-linking of the rubber latex in the above step (1) is carried out in the preparation method of the whole bowl of powdered rubber disclosed in the international patent application WO 01/40356 (priority ⁇ 199 ⁇ ), December. The same method of irradiating crosslinked rubber latex.
- the obtained radiation-crosslinked rubber latex is also a rubber latex before irradiation in WO01/4035.
- a crosslinking aid may be used in the rubber latex, and a crosslinking assistant may also be used.
- the crosslinking assistant used is selected from the group consisting of a monofunctional crosslinking assistant, a difunctional crosslinking assistant, and a trifunctional crosslinking aid. Agent, tetrafunctional cross-linking aid or polyfunctional cross-linking aid and any combination thereof.
- Examples of the monofunctional crosslinking crosslinking aids include, but are not limited to, (meth) octyl acrylate, (meth) isooctyl propyl acrylate, glycidyl (meth) acrylate;
- Examples of functional group crosslinking assistants include, but are not limited to: 1 > 4-T diol di(meth) acrylate, 1,6-hexanediol di(methyl)propanate, diethylene glycol Di(meth)acrylate, triethylene glycol di(meth)acrylate, neopentyl glycol di(meth)propionate, divinylbenzene;
- examples of trifunctional crosslinking aids Including, but not limited to: trimethylol propyl tris(meth) acrylate, pentaerythritol tris(methyl) propyl acrylate;
- examples of the tetrafunctional crosslinking auxiliaries include (but are not limited to): Pent
- the amount of the crosslinking assistant added above is generally from ⁇ " to 10% by weight of the weight of the latex in the latex. Yi is preferably from 0.5 to 9% by weight, more preferably to 0.7,% by weight of ⁇
- the source of high energy radiation for irradiation is selected from a cobalt source, an ultraviolet or high energy electron accelerator, preferably a cobalt source.
- the dose of irradiation may be 0, l ⁇ 30Mra ⁇ 1, preferably 0, 5 ⁇ 20Mr.
- the irradiation dose should be such that the rubber particle content of the rubber latex after irradiation crosslinking is 60% by weight or more. Preferably, it is 7 S% by weight or more, more preferably 80% by weight or more.
- the rubber composition obtained by mixing the radiation-crosslinked rubber latex with the usual uncrosslinked styrene-butadiene rubber latex is dispersed in a continuous phase composed of uncrosslinked green rubber.
- the rubber particle dispersed phase also has the characteristics of the fully vulcanized powder rubber disclosed in WO01/403S6. That is, the rubber particles having a crosslinked structure are rubber particles having a gel content of 6 % by weight or more, more preferably 75% by weight or more, more preferably 8% by weight or more.
- Each of the rubber particles having a crosslinked structure is homogeneous, that is, the individual particles are homogeneous in composition, and no delamination or fraction is found in the particles under the observation of the existing microscopic technique. Equal heterogeneity.
- the crosslinked structure The rubber particles are determined by cross-linking the corresponding rubber latex to determine the particle size of the rubber particles, and the particle size is consistent with the particle size of the latex particles in the original rubber latex. Rubber particles in raw rubber late
- the (particle size of the latex particles) is generally from 20 to 5 angstroms, preferably from ⁇ to 30 )) ⁇ , more preferably from SO to 200 t»n.
- the average particle diameter of the rubber particles having a crosslinked structure after irradiation crosslinking is also generally 20 to SOOnra, and is preferably: H im, more preferably 50 to 2 ⁇ ⁇ , because the two types of latex are uniformly mixed in the method.
- the rubber particles in the rubber latex after irradiation and cross-linking have been cross-linked, have a certain dish content, will not stick or coagulate during the latex condensation process, and can be in uncrosslinked styrene-butadiene rubber.
- the dispersion is uniform, and therefore, in the finally obtained rubber composition, the average particle diameter of the rubber particles having a crosslinked structure as a fraction is also 20 to S qing, and the yell is 50 to 3 ⁇ , more preferably, 50 to 2 miscellaneous iim's Fan Yu.
- the uncrosslinked styrene-butadiene rubber latex and the radiation-crosslinked rubber latex are mixed and coagulated in accordance with the weight ratio, and the rubber composition is prepared.
- the mixing device used in the mixing step of the two rubber latexes is a commonly used mixing device, which is selected from the prior art high-speed agitator, kneading machine and the like.
- the latex coagulation conditions and equipment are based on the latex coagulating equipment commonly used in the existing rubber industry.
- the rubber composition of the present invention which is prepared by mixing and coagulating a rubber latex which has not been crosslinked with a rubber latex and rubber particles having a crosslinked structure may further contain a filler which is commonly used in the field of rubber processing.
- a filler which is commonly used in the field of rubber processing.
- the following materials are particularly suitable fillers for the preparation of the rubber compounds and vulcanized rubbers of the present invention, including carbon black, chalk black, metal oxides, silicates, carbonates, acid salts, hydroxides, glass fibers. Or one of glass beads or the like or a mixture thereof.
- the metal oxide is at least one of titanium oxide, aluminum oxide, magnesium oxide, calcium oxide, cerium oxide, and zinc oxide.
- the rubber Mia compound of the present invention may further contain a crosslinking agent such as a crosslinking agent, a reduction accelerator, an antioxidant, a heat stabilizer, a light stabilizer, an ozone stabilizer, a processing aid, a plasticizer, a softener, and an anti-blocking agent.
- a crosslinking agent such as a crosslinking agent, a reduction accelerator, an antioxidant, a heat stabilizer, a light stabilizer, an ozone stabilizer, a processing aid, a plasticizer, a softener, and an anti-blocking agent.
- the amount of additives used in the rubber processing process is usually used, or according to the actual amount. The requirements of the situation are adjusted.
- the addition of various additives mentioned above may be added when the two rubber latexes are mixed, or may be added after the two rubber latexes are mixed and then added by the usual rubber mixing process, and the equipment may be commonly used in the rubber industry.
- common mixing equipment an open mill, an internal mixer, a single screw extruder or a twin screw extruder can be used.
- the creped rubber prepared from the rubber composition of the present invention has a styrene-butadiene rubber base and a rubber particle having a crosslinked structure dispersed therein in an average particle diameter in a weight ratio.
- the microscopic phase state of the rubber composition according to the present invention is as follows: the uncrosslinked styrene-butadiene rubber is a continuous phase, and the rubber particles having a crosslinked structure are dispersed phases, and It is dispersed at a fine particle diameter of 20 to 100 nm, preferably SO to 300 nm, and preferably 50 to 200 nm.
- the rubber composition obtained vulcanizates phase still has! « ⁇ 3 ⁇ 4 of the structure
- the vulcanizate prepared from the rubber composition of the present invention is not affected by the vulcanization system and can be vulcanized in a conventional sulfur deuteration system or a non-peeling system.
- the vulcanizate prepared by the rubber composition of the invention is not affected by the bowling process, and can be flat plate, injection cupping, vulcanization tank deuteration, individual engraving machine bowl, co-melting salt bowl, bubbling bed thinning, microwave curing and high energy ray-curing and other ⁇
- the mixing and thinning process of preparing the bowling rubber from the rubber composition of the invention adopts the methods commonly used in the rubber industry and the common mixing equipment, and can use an open mill, an internal mixer, a single screw extruder or a twin screw extruder. Wait.
- the rubber compound of the invention can also be used as a solid masterbatch, and then the un-crosslinked block rubber is obtained by a blending process such as an internal mixer, a double mill, a screw extruder or the like to obtain a rubber compound.
- the rubber latex is cross-linked by irradiation to make the rubber particles in the latex have a crosslinked structure, and then the radiation-crosslinked rubber latex and the uncrosslinked rubber latex are mixed on a common mixing device.
- the solid masterbatch is obtained by coagulation using a rubber latex commonly used in a coagulation method.
- the solid masterbatch is further added to the uncrosslinked block rubber by a mixing method commonly used in the rubber industry, and then mixed with a common rubber processing aid to obtain a bowl of rubber.
- the rubber compound thus obtained can also be crosslinked by silver-irradiated cross-linking
- the rubber particles of the structure achieve a dispersion in the particle size range in the uncrosslinked rubber matrix. Since the rubber particles in the rubber latex are determined by the particle size of the original latex particles by irradiation crosslinking, the crosslinked rubber particles are irradiated during the coagulation process and during the vulcanization process of the subsequent bowl rubber preparation.
- the fine particle size to SOOnm is dispersed in the uncrosslinked butylphthalide, so that it has such a microscopic morphology that the rubber particles having a crosslinked structure can exert an effect and simultaneously solve the common existence of different rubbers in the bowling process.
- the problem of vulcanization enables the simultaneous improvement of wet skid resistance, rolling resistance and abrasion resistance of the rubberized composition of the rubber composition of the present invention.
- said rubber bowl s prepared from the rubber composition of the present invention not only has a low rolling resistance and excellent wet skid resistance, while having excellent abrasion resistance can be used as a tread rubber of high performance automobiles.
- the rubber composition of the present invention and the preparation method thereof are simple, easy to operate, and the process conditions are all normal conditions, and are easy to be widely used.
- a rubber composition comprising an uncrosslinked rubber and a rubber particle having a crosslinked structure therein; wherein the rubber particles having a crosslinked structure are synthetic rubber particles or/and natural rubber particles, and an average dispersed particle The diameter is 20 ⁇ 500imi, the gel content is weight or higher; wherein the uncrosslinked rubber is styrene-butadiene rubber; the weight ratio of the rubber particles having cross-linking structure to the uncrosslinked rubber is .1 : 99-20: 80.
- the rubber composition according to the embodiment of the present invention characterized in that the rubber particles having a crosslinked structure are one or the following: natural rubber particles, styrene-butadiene rubber particles, carboxylated styrene-butadiene rubber particles , nitrile rubber particles, carboxylated nitrile rubber particles, neoprene particles, polybutane rubber particles, silicone rubber particles, propionate rubber particles, styrene-butadiene rubber particles, etc.
- nitrile rubber particles anthraquinone rubber particles, styrene-butadiene rubber particles, carboxylated styrene-butadiene rubber particles, more preferably one or more of the following potassium: butyl rubber particles, carboxyl styrene-butadiene rubber particles 3.
- the rubber composition according to embodiment 1 or 2 characterized in that the rubber particles having a crosslinked structure have a homogeneous structure.
- the latex of the rubber particles having a crosslinked structure is a rubber latex obtained by irradiation crosslinking.
- the synthetic rubber or/and the natural rubber latex is cross-linked by irradiation, and the synthetic rubber or/and the natural rubber-like particles in the milk have a cross-linked structure, reach the amount of the gel, and make the latex Synthetic rubber or/and natural rubber particles are fixed within the average particle size range;
- the rubber latex is any one or the following: natural rubber latex, styrene butadiene rubber latex, carboxylated styrene butadiene rubber latex, nitrile rubber latex, carboxylated nitrile rubber latex, neoprene rubber polybutadiene rubber latex, Silicone rubber latex or propionate rubber latex, T-phenylpyrubber rubber latex, etc., preferably one or the other of the following: nitrile rubber latex, ⁇ benzopyrene latex, styrene butadiene rubber latex, carboxyl T rubber rubber rolling More preferably, any one or more of the following: T. benzene rubber latex, carboxyl T benzene rubber latex, butyronitrile rubber M ⁇ milk, most preferably T nitrile rubber J «milk.
- Figure 1 is a photograph of a microscopic phase transmission electron microscope ( ⁇ ) of a rubber composition of the rubber composition obtained in Example 1. Specific implementation method:
- Rolling resistance The rolling power loss was measured using a ⁇ rubber rolling resistance tester (Beijing Wanhui Technology Development Co., Ltd.).
- the constant-speed moving ⁇ -shaped rubber sample is in close contact with the drum for relative movement.
- the surface of the rubber sample in contact with the drum is deformed under pressure load, and the deformation gradually increases from the beginning of the contact point to the intermediate point; and gradually decreases from the intermediate point to the exit point to zero.
- the resultant force of the rubber sample during the deformation from the beginning of the contact point to the intermediate point will be higher than the resultant force during the recovery from the intermediate point to the exit point.
- This force parallel to the load force is the rubber sample. Power loss Value U/r). According to this, the rolling resistance of the rubber formulation can be characterized.
- Rolling resistance index (%) The rolling resistance of pure rubber is measured as the base. The measured value of other modified rubber accounts for the rolling rubber force index as a percentage of the measured value of pure rubber rolling resistance.
- the principle is: The sample and the grinding wheel are rubbed under a certain inclination angle and a certain load to determine the wear volume of a certain mileage.
- the wear volume is calculated as follows:
- the wear volume of the modified rubber is the wear volume of the modified rubber.
- Abrasion index (%) The measured value of the abrasion volume of pure rubber is the base. The percentage of the measured volume of the other modified rubber to the measured value of the pure rubber is the abrasion index.
- the friction of the compound on the wet surface is related to the hysteresis loss, and the iand surface at 0 e C is usually used to resist wet skid performance.
- Anti-slip index (%): The tand resistance of pure rubber is determined as the base. The anti-wet slip measurement value of other modified rubber accounts for the percentage of pure rubber anti-slip measurement.
- Milk polyprecipitated milk SBR1502 solid content 2 wt % ? combined with styrene bromide content 23 wt %, Mooney viscosity 50, Qilu Petrochemical Company rubber plant production.
- Nitrile rubber L brand is nitrile-26, Zhaodong Tianyuan Chemical Co., Ltd. produces beta carbon black: Tianjin Dolphin Carbon Black Co., Ltd.
- Accelerator TBBS tert-butyl ⁇ 2-benzothiazole hypoxanthine knee, Zheng Jinshan Chemical Plant Calcium Chloride: Commercially available
- the milk is added to the coagulant solution, stirred for 15 minutes, filtered, washed, and thousand
- Solid rubber (green rubber).
- rotor speed SOrrain '1 is a process in which Bantmry mixer: Add raw rubber or styrene-butadiene rubber composition of the present invention, carbon black and other additives (great sulphur, accelerator, except), put down the top plug, mix 3miii. Dispense (temperature in !50 ⁇ rc).
- the film was placed on the ⁇ -6 ⁇ type open mill (product of Shanghai Rubber Calendar Machinery Factory) after six times. Then, under the ⁇ 6 ⁇ , press the positive bowling time ⁇ 9 ⁇ , then the spalled rubber samples are made into standard splines, and various mechanical performance tests are carried out. The results are shown in Table 3.
- the formulation of the rubber compound is shown in Table 2, and the unit is the parts by weight.
- nitrile rubber gas butyronitrile-26
- the solid content of nitrile latex After adding 3 % wt of the cross-linking aid trimethylolpropane triacrylate, the irradiation cross-linking was carried out at an irradiation dose of 3.0 Mmd to obtain a radiation-crosslinked nitrile rubber latex, which was irradiated and crosslinked in the latex.
- the average particle size of the nitrile rubber particles is IdOnm
- the gel content is 9 %% ⁇
- the irradiated cross-linked nitrile rubber latex is added to the uncrosslinked lactopolyphenylene rubber SBR1502 according to a certain solid content ratio, wherein the solid content of the nitrile rubber latex after irradiation crosslinking is not
- the combined solid content of styrene-butadiene rubber latex was 5;95.
- the solid rubber composition was obtained by coagulation according to the previous gelation method, and the composition of the coagulant solution was the same as in Table 1.
- the rubber obtained in step 2 is obtained.
- the composition is vulcanized by a peroxide deuteration system, and the specific formulation is: Dicumyl peroxide is added to the rubber composition, and 1.5 parts by weight of dicumyl peroxide is used in 1 part by weight of the rubber composition.
- the preparation and bowling method of the rubber compound are the same as described above, and the obtained vulcanized rubber sample is cut into an ultrathin section of about O.
- the nitrile rubber particles are lightly dyed, which can be distinguished from the dark continuous phase styrene-butadiene rubber.
- the nitrile rubber particles are dispersed in the continuous phase of the styrene-butadiene rubber with an average particle size of 100 nra.
- the latex was changed from the mixed two latexes to the purely polystyrene-butadiene rubber latex S:BR3502, and the composition of the rubber compound of the specific rubber composition is shown in Table 2. ⁇ *i See Table 3.
- Milk polystyrene T-bar rubber leg SBR1502 HI content 20 wt%, combined with styrene content 23 wt%, Mooney viscosity S «, Qilu Petrochemical Company rubber plant production.
- Styrene-butadiene rubber latex 1 Latex-polybutan rubber latex, graded as styrene-butadiene "70, combined with styrene content of 70%, produced by Henan Yanshi Rubber Factory.
- T benzene rubber latex 2 latex polystyrene-butadiene rubber latex, grade is styrene-butene - 5 ⁇ , combined with styrene content of 50% Shandong Qixiang Rubber Factory.
- Carbon black N234 Tianjin Dolphin Carbon Black Co., Ltd.
- Zinc oxide Commercially available ⁇
- Stearic acid Commercially available.
- Accelerator TBBS Tert-decyl 2-benzothiazole hypoxanthine > Zhengzhou Jinshan Chemical Plant.
- Glycerin Commercially available.
- Dicumyl peroxide Commercially available. Latex coagulation method:
- the coagulant solution was prepared according to the formulation of Table 4, and then added to the coagulant solution according to the same amount of rubber latex as the coagulant, stirred for 15 minutes, filtered, washed, and dried to obtain Solid rubber (green rubber).
- the styrene-butadiene rubber latex after cross-linking by irradiation is added to the uncrosslinked emulsion polystyrene-butadiene rubber latex SBR1502 according to a certain solid content ratio, wherein the solid content of the butyl emulsion after irradiation crosslinking is
- the weight ratio of the uncrosslinked milk polystyrene-butadiene rubber Mm milk iH was 5:95. After stirring at a high speed for 15 minutes in a stirrer, it was coagulated according to the aforementioned latex coagulation method to obtain an enamel rubber composition.
- the composition of the coagulant solution is the same as that of Table 4 ⁇
- the crosslinking aid tributyl trimethylolpropane triacrylate was added at 3% by weight of the styrene-butadiene latex, and then irradiated.
- Cross-linking, the irradiation dose is: IMnid
- the radiation-crosslinked styrene-butadiene rubber latex is obtained
- the average particle diameter of the radiation-crosslinked T-benzene rubber particles in the latex is Oiioi, and the amount of the limbs is 89%.
- the radiation-crosslinked styrene-butadiene rubber rubber L is added to the uncrosslinked emulsion polystyrene-butadiene rubber latex SBR1502 according to a certain solid content ratio, wherein the emulsion solid content and uncrosslinked after irradiation crosslinking
- the emulsion polystyrene-butadiene rubber latex has a weight ratio of 3:97. After stirring at a high speed for a minute in the agitator, it was coagulated according to the pre-lactation method to obtain a solid rubber composition.
- the composition of the coagulant solution is the same as that of Table 4 ⁇
- the rubber composition obtained above is added to the relevant auxiliary agent for kneading to obtain a rubber compound.
- the formulation composition is shown in Table 5 in parts by weight, and the preparation and deuteration method of the rubber compound is the same as before.
- the sample was then vulcanized rubber article prepared standard sample, for testing the mechanical properties, which junction Gao ⁇ shown in Table 6 as Comparative Example 2
- the kneading emulsion was changed from the mixed two kinds of latex to the emulsion polystyrene-butadiene rubber latex SBm502, and the others were the same as in Example 3.
- the composition of the rubber compound of the specific rubber composition is shown in Table 5.
- the performance of the rose rubber is shown in the table » Comparative Example and Example Formulation
- the rolling resistance index, the abrasion index and the wet skid index of the bowling rubber can be simultaneously improved, which is due to the crosslinked structure after radiation crosslinking.
- the benzene rubber particles are dispersed in a continuous phase styrene-butadiene rubber matrix at a fine particle diameter of S0 to 300 nm. This property of the rubber composition of the present invention is particularly suitable for use as a tread rubber for automobiles.
- Milk poly-T-phenyl rubber SBR1S02 ⁇ content 2 ⁇ wt%, combined with styrene content 23 wt%, Mooney viscosity 5 Qilu Petrochemical Company sample rubber factory production.
- Carboxyl styrene-butadiene rubber latex The brand name is bullying benzene-70, produced by Yanshan Henan Yanshi Rubber Factory, carbon black: N2M Tianjin Dolphin Carbon Black Co., Ltd.
- Zinc Oxide Commercially available.
- Glycerin Commercially available.
- Dicumyl peroxide Commercially available. Latex coagulation method:
- the coagulant solution was prepared according to the formula of Table 7, and then added to the coagulant solution according to the same amount of rubber glue as the coagulant. After 5 minutes, it was filtered, washed and dried to obtain a solid rubber. (Raw rubber).
- Banbury mixer product of Fanrei Bridge, UK
- the volume is 1.57L
- the rotor speed is SOr-miif 1
- the process is: adding styrene-butadiene rubber or rubber group of the invention Compound, carbon black and other auxiliaries (except sulfonate, accelerator, except), put down the top plug, mix miiu rubber (temperature is 150 ⁇ said. C).
- the irradiation cross-linking is carried out.
- dose is 3.0Mrad, to obtain irradiation crosslinked gas-based styrene-butadiene rubber latex, average particle diameter ⁇ butyl rubber latex particles of lOOnm irradiation crosslinked, gel content of 93% ⁇
- the radiation-crosslinked carboxylated styrene-butadiene rubber latex is added to the uncrosslinked milk-polybutanized snail emulsion SBR1502 according to a certain solid content ratio, wherein the irradiated i ⁇ butyl-transfer milk solid content and The uncrosslinked milk polystyrene-butadiene rubber content is 3:97 by weight. After stirring at a high speed for 15 minutes in a stirrer, it was coagulated according to the aforementioned latex coagulation method to obtain a solid rubber composition ⁇ in which the composition of the coagulant solution was the same as in Table 7.
- the latex was changed from the mixed two kinds of glue to the purely polystyrene-butadiene rubber latex SBR1502, and the others were the same as those in the example S.
- the composition of the rubber compound of the specific rubber composition is listed in Table 9. Comparative Example and Example Formulation
- the rolling resistance index, the abrasion index and the wet skid resistance index of the rubberized rubber of the present invention can be simultaneously improved, which is due to the crosslinked structure after irradiation crosslinking.
- the carboxystyrene-butadiene rubber particles are dispersed in a continuous phase T-benzene rubber matrix at a fine particle diameter of Si iOOnm. This property of the rubber composition of the present invention is particularly suitable for use as a tread rubber for automobiles.
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- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
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- Engineering & Computer Science (AREA)
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Abstract
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Priority Applications (9)
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SG11201401847UA SG11201401847UA (en) | 2011-10-26 | 2012-10-26 | Rubber composition and preparation method and vulcanized rubber thereof |
RU2014121110A RU2607581C2 (ru) | 2011-10-26 | 2012-10-26 | Резиновая смесь, способ ее получения и вулканизированная резина, полученная из нее |
JP2014537482A JP6084623B2 (ja) | 2011-10-26 | 2012-10-26 | ゴム組成物、その調製方法及び加硫ゴム |
CA2853513A CA2853513C (en) | 2011-10-26 | 2012-10-26 | Rubber composition and preparation method and vulcanized rubber thereof |
PL12843797.7T PL2772512T3 (pl) | 2011-10-26 | 2012-10-26 | Kompozycja kauczukowa i sposób jej wytwarzania oraz wykonania z niej kauczuku wulkanizowanego |
EP12843797.7A EP2772512B1 (en) | 2011-10-26 | 2012-10-26 | Rubber composition and preparation method and vulcanized rubber thereof |
KR1020147012677A KR101748600B1 (ko) | 2011-10-26 | 2012-10-26 | 고무 조성물, 그것의 제조 방법 및 가황 고무 |
US14/354,222 US9453122B2 (en) | 2011-10-26 | 2012-10-26 | Rubber composition, preparation method and vulcanized rubber thereof |
ES12843797T ES2940461T3 (es) | 2011-10-26 | 2012-10-26 | Composición de caucho y método de preparación y caucho vulcanizado de la misma |
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CN201110330407.7A CN103073758B (zh) | 2011-10-26 | 2011-10-26 | 一种橡胶组合物及其制备方法和其硫化胶 |
CN201110330407.7 | 2011-10-26 | ||
CN201210402963.5 | 2012-10-22 | ||
CN201210402963.5A CN103772767B (zh) | 2012-10-22 | 2012-10-22 | 一种橡胶组合物及其制备方法和其硫化胶 |
CN201210402962.0 | 2012-10-22 | ||
CN201210402962.0A CN103772766B (zh) | 2012-10-22 | 2012-10-22 | 一种橡胶组合物及其制备方法和其硫化胶 |
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US (1) | US9453122B2 (zh) |
EP (1) | EP2772512B1 (zh) |
JP (1) | JP6084623B2 (zh) |
KR (1) | KR101748600B1 (zh) |
CA (1) | CA2853513C (zh) |
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RU (1) | RU2607581C2 (zh) |
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Cited By (2)
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KR20150106228A (ko) * | 2014-03-11 | 2015-09-21 | 주식회사 엘지화학 | 카르본산 변성 니트릴계 공중합체 라텍스 조성물을 포함하는 딥 성형용 조성물 및 이로부터 제조된 딥 성형품 |
US11413905B2 (en) | 2016-05-19 | 2022-08-16 | The Yokohama Rubber Co., Ltd. | Tire rubber composition |
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KR102167527B1 (ko) | 2017-12-19 | 2020-10-19 | 주식회사 엘지화학 | 공액디엔계 공중합체 조성물, 이의 제조방법 및 이를 포함하는 고무 조성물 |
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CN113933325B (zh) * | 2021-10-14 | 2024-07-05 | 思通检测技术有限公司 | 将处于拉伸状态橡胶制成透射电镜样品并进行透射电镜表征的方法 |
WO2024005029A1 (ja) * | 2022-07-01 | 2024-01-04 | 株式会社ブリヂストン | タイヤ用加硫ゴム組成物及びタイヤ |
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KR101590694B1 (ko) | 2014-03-11 | 2016-02-01 | 주식회사 엘지화학 | 카르본산 변성 니트릴계 공중합체 라텍스 조성물을 포함하는 딥 성형용 조성물 및 이로부터 제조된 딥 성형품 |
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SG11201401847UA (en) | 2014-09-26 |
EP2772512A4 (en) | 2015-09-16 |
CA2853513C (en) | 2018-06-19 |
EP2772512B1 (en) | 2023-01-11 |
EP2772512A1 (en) | 2014-09-03 |
ES2940461T3 (es) | 2023-05-08 |
KR20140084168A (ko) | 2014-07-04 |
JP6084623B2 (ja) | 2017-02-22 |
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JP2014530941A (ja) | 2014-11-20 |
US9453122B2 (en) | 2016-09-27 |
TW201326315A (zh) | 2013-07-01 |
US20150105490A1 (en) | 2015-04-16 |
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