189 results about "Styrene-butadiene" patented technology

The invention discloses a recyclable lawn and a preparation method thereof, and belongs to the technical field of artificial turfs. The lawn sequentially comprises artificial grass yarns, a base cloth layer and a back glue layer from top to bottom, the artificial grass yarns and the base cloth layer are made of polyolefin; the back adhesive layer is prepared from the following components in parts by weight: 4 to 8 parts of polyolefin elastomer, 10 to 20 parts of olefin block copolymer, 20 to 30 parts of hydrogenated styrene-butadiene copolymer, 8 to 12 parts of styrene-isoprene copolymer, 10 to 12 parts of butadiene-styrene rubber, 2 to 6 parts of ethylene-acrylic acid copolymer, 15 to 30 parts of plasticizer, 0.1 to 0.4 part of antioxidant, 3 to 6 parts of compatilizer and 2 to 4 parts of modified filler; according to the lawn, the artificial grass yarns, the base cloth layer and the gum layer are similar in component, so that the lawn can be conveniently and integrally recycled subsequently, the utilization rate of the lawn gum is increased, and resource waste is reduced.

The invention discloses an SBS (styrene butadiene styrene) modified asphalt aging performance evaluation method, a prediction model and application, relates to a construction method of an SBS modified asphalt aging performance evaluation and prediction model based on multi-scale aging evaluation indexes, and aims to solve the problems that aging evaluation depends on a single-scale index and the prediction precision is insufficient in the prior art. The model is verified by accelerated aging data in a laboratory, the thermo-oxidative aging error is less than or equal to 9.4%, and the ultraviolet aging error is less than or equal to 7.5%. Engineering application: providing road maintenance period suggestions (for example, when the aging time is predicted to be 5 years, detection is recommended once every two years); triggering a material replacement threshold value when the number of honeycomb structures drops to 60% of the initial value; the performance recovery is realized by compounding the new asphalt and the regenerant (the mixing amount is 10-15%). Through multi-scale index collaborative analysis and data modeling, the aging prediction precision is significantly improved, and a scientific basis is provided for asphalt material life evaluation and road maintenance decision.

The invention belongs to the technical field of emulsified asphalt materials, and particularly relates to a water-resistant emulsified asphalt mixture based on epoxy resin as well as preparation and test methods thereof, and the water-resistant emulsified asphalt mixture comprises the following components in parts by weight: 90-95 parts of aggregate, 3-5 parts of early strength agent, 1-2 parts of water, 2-3 parts of mineral powder and 10-15 parts of modified emulsified asphalt, the modified emulsified asphalt comprises the following components in parts by weight: 45-55 parts of modified asphalt, 3-8 parts of an emulsifier, 20-25 parts of epoxy resin and 15-22 parts of water, wherein the modified asphalt comprises the following components in parts by weight: 80-100 parts of matrix asphalt, 3-5 parts of SBR (Styrene Butadiene Rubber), 2-5 parts of petroleum resin, 1-2 parts of a toughening agent and 5-10 parts of a composite curing agent. Through step-by-step preparation, the mixture has very good low-temperature toughness and mechanical properties, and the water resistance of the material can be improved, so that the emulsified asphalt mixture is applied to a surface layer of an asphalt pavement, and the application scene of the emulsified asphalt mixture is widened.

The invention discloses chain end modified liquid rubber, mixed rubber, a preparation process, a tire and a vehicle, and belongs to the technical field of liquid rubber and manufacturing thereof. According to the liquid rubber, butadiene monomers and a chain transfer agent are added in batches in the preparation process, negative ion active centers are frequently transferred to the chain transfer agent from the tail end of a polybutadiene-based lithium active chain to form new initiation growth centers, then newly introduced butadiene monomers are initiated to grow, the dosage of an n-butyllithium initiator is remarkably reduced, and the stability of the liquid rubber is improved. The production cost is greatly reduced, the generation of sewage is greatly avoided, the monomer concentration of the final rubber product can reach about 80 percent by weight, the productivity is improved, and large-scale production is facilitated; the rubber also enables the filler to have good dispersibility, and has good compatibility with base rubber such as styrene butadiene rubber, natural rubber and the like.

The present application provides an all-steel snow tire tread, consisting of the following raw materials in parts by weight: 50-80 parts of natural rubber, 20-50 parts of solution polymerized styrene butadiene rubber with dual glass transition temperatures, 40-60 parts of carbon black, 10-20 parts of white carbon black with a high specific surface area, 1-2.5 parts of silane coupling agent, 5-10 parts of modified anti-wet skid resin, 2-5 parts of zinc oxide, 1-3 parts of stearic acid, 1-3 parts of anti-aging agent 4020, 1-3 parts of anti-aging agent RD, 1-3 parts of protective wax, 1-1.8 parts of sulfur, and 1-1.5 parts of promoter NS.

The present invention relates to a bridge surface waterproofing method having excellent waterproofness and constructability. The present invention provides a bridge surface waterproofing method comprising the steps of: evenly preparing the surface of a bridge surface; forming a primer layer on the surface of the bridge surface; forming a waterproofing layer that is from 2 mm to 4 mm by applying a bridge surface waterproofing agent composition onto the primer layer so that the waterproofing layer is inclined in a specific direction of the bridge surface; and forming an asphalt layer on the waterproofing layer, wherein the bridge surface waterproofing agent composition comprises 40 to 60 wt% of asphalt, 5 to 10 wt% of styrene butadiene styrene, 5 to 10 wt% of ethylene glycol dimethacrylate, 3 to 5 wt% of octamethylcyclotetrasiloxane, 5 to 10 wt% of silica particles having an average particle diameter of 200 to 400 nm, 5 to 10 wt% of silica particles having an average particle diameter of 700 to 1000 nm, 3 to 8 wt% of methyl methacrylate, 1 to 3 wt% of 4-hydroxy-3-methoxybenzoic acid, 5 to 10 wt% of a fiber reinforcing material, 1 to 3 wt% of a dispersant, 1 to 3 wt% of a viscosity modifier, and 1 to 3 wt% of a tackifier.

The positive electrode for a lithium-sulfur battery according to the present invention contains a predetermined amount of polyacrylic acid, polyacrylamide, carboxymethyl cellulose, and styrene-butadiene rubber as a binder polymer. When used in a lithium-sulfur battery, the positive electrode for a lithium-sulfur battery can ensure high adhesive strength between the positive electrode active material layer and the positive electrode current collector, and sufficient output performance.

To provide a tire which can improve total performance of anti-wear performance, snow grip performance, and wet grip performance.SOLUTION: A tire has a tread part, wherein the tread part is composed of a rubber composition containing a rubber component, silica, a resin component, and vegetable oil, the rubber component contains 20 mass% or more and 90 mass% or less of styrene-butadiene rubber, the rubber composition contains more than 50 pts.mass and 150 pts.mass or less of silica with respect to 100 pts.mass of the rubber component, the resin component contains at least one selected from the group consisting of a terpene-based resin, a C5C9-based resin, and a dicyclopentadiene-based resin, a glass transition temperature of the rubber composition is -30°C or lower, and when a thickness of a thickest part of the tread part is represented by t (mm), and a styrene content of the styrene butadiene rubber is represented by S (mass%), t×S is less than 300.SELECTED DRAWING: Figure 1

The invention discloses an environment-friendly rubber anti-aging agent and a preparation method thereof.The environment-friendly rubber anti-aging agent is prepared from styrene butadiene rubber, butadiene rubber, white carbon black, calcium carbonate, stearic acid, zinc oxide, white oil, an active agent, an accelerant, a first anti-aging agent and a second anti-aging agent.According to the environment-friendly rubber anti-aging agent, through reasonable raw material selection and proportioning, the performance of rubber is improved, aging is delayed, and the service life of the rubber is prolonged; the rubber composition and the rubber product have excellent discoloration resistance, excellent fatigue resistance, excellent ozone resistance and excellent mechanical properties before aging and after thermo-oxidative aging at the same time, are used for manufacturing a tire part rubber matrix, and are particularly used as a tire sidewall rubber composition.

The application provides a high-styrene solution polymerized styrene-butadiene rubber and a preparation method and application thereof, and the preparation method comprises the following steps: mixing styrene, butadiene, an initiator, a structure regulator and a non-polar solvent, and performing a polymerization reaction to obtain solution polymerized styrene-butadiene rubber; wherein the structure regulator comprises at least two of t-butoxy sodium, t-amyl oxy sodium, 2,3-dimethyl-3-pentanol sodium and ethylene glycol disodium, and a crown ether. By using the composite structure regulator, the application can prepare a random high-styrene content solution polymerized styrene-butadiene rubber, and the rubber almost does not contain styrene blocks, and the content of vinyl in the rubber can be adjusted by the addition amount of the structure regulator. Therefore, the solution polymerized styrene-butadiene rubber prepared by the application has good strength and hardness due to the high styrene content, and the random microstructure reduces the glass transition temperature and heat build-up of the raw rubber, and is suitable for the manufacturing of high-performance tires such as new energy vehicle tires.

The application discloses an electrode for an energy storage device. The electrode includes an active layer. The active layer comprises a network structure formed by carbon elements with high aspect ratio, the carbon elements define void spaces in the network, electrode active material particles are distributed in the void spaces in the network, and the active material particles comprise silicon and a polymer additive. The polymer additive comprises at least one of polyolefin, polyacrylic acid or styrene butadiene rubber (SBR).

The invention relates to a modified asphalt sizing material, which is prepared from the following components in percentage by weight: 35.5 to 38.5 percent of 70 # asphalt, 6.5 to 9.5 percent of base oil, 4.5 to 5.5 percent of aromatic oil, 3.5 to 4.5 percent of SBS (Styrene Butadiene Styrene), 5.5 to 6.5 percent of SIS (Styrene Isoprene Styrene), 5.5 to 6.5 percent of SBR (Styrene Butadiene Rubber) powder, 1.9 to 2.1 percent of blocked isocyanate, 0.06 to 0.08 percent of activating agent, 4.5 to 5.5 percent of porous silicon dioxide and 24 to 30 percent of powder. The modified asphalt sizing material can trigger the activating agent to catalyze the deblocking of the blocked isocyanate at the processing temperature of 180 + / -2 DEG C to release-NCO groups, the-NCO groups can react with trace moisture in an asphalt system to generate CO2 gas, in the rubber layer forming process, CO2 is wrapped by the asphalt in a viscoelastic state to form a uniform closed-cell foam structure, and in the forming process of a rubber layer, the modified asphalt sizing material can be used for forming an asphalt layer. According to the structure, liquid water permeation is blocked by utilizing the characteristic that the surface tension of liquid water is greater than that of a bubble wall, and an initial channel is constructed for vapor diffusion; furthermore, closed-cell foam is bridged by utilizing nano-pores of porous silicon dioxide, a'nano-pore adsorption-micropore diffusion 'three-dimensional vapor-permeable network is constructed, diffusion and discharge of water vapor are accelerated, liquid water is further blocked, and dynamic balance of waterproofness and breathability is realized.

The application discloses a preparation method of PPTA nanometer microsphere styrene butadiene rubber composite material, which comprises the following steps: 1) styrene butadiene rubber is added into a mixed solvent of cyclohexanone and N-methyl pyrrolidone, and heated and stirred until the styrene butadiene rubber is completely dissolved to obtain a transparent solution; 2) part of the transparent solution is taken, p-phenylenediamine and lithium chloride are added, and stirring is uniformly carried out to obtain solution A; p-phenylenediamine chloride is added into the remaining transparent solution, and stirring is uniformly carried out to obtain solution B; under the condition of nitrogen atmosphere and ice water bath, solution B is slowly dropped into solution A, and stirring reaction is carried out at room temperature to obtain a light brown solution; 3) deionized water is added into the light brown solution, and after stirring, filtration and washing, and drying, the PPTA nanometer microsphere styrene butadiene rubber composite material is obtained. The in-situ solution condensation method and the bottom-up method are combined to synthesize the PPTA nanometer particles which are uniformly dispersed in the rubber matrix, and the surface effect, the quantum size effect and the macroscopic quantum tunnel effect endow the composite material with high strength, high toughness, high impact resistance and other performances.

The invention discloses a heat-preservation, sound-insulation and moisture-proof composite material and a preparation method thereof, and belongs to the technical field of high polymer materials. The heat-preservation, sound-insulation and moisture-proof composite material is prepared from the following raw materials in parts by weight: 60 to 65 parts of PVC (Polyvinyl Chloride), 15 to 20 parts of SBS (Styrene Butadiene Styrene), 2 to 5 parts of plasticizer, 8 to 12 parts of modified flexibilizer, 1 to 2 parts of anti-aging agent, 2 to 5 parts of modified coupling agent, 8 to 10 parts of ceramic hollow microbeads, 5 to 8 parts of nano silicon dioxide and 5 to 10 parts of flame retardant. The modified toughening agent is prepared by reacting 1, 4-benzene diboronic acid with polyethylene glycol to generate a hyperbranched product; and then reacting with 4, 4 '-methylene bis (phenyl isocyanate) to obtain the product. The prepared heat-preservation, sound-insulation and moisture-proof composite material has excellent impact resistance and heat-preservation, sound-insulation and moisture-proof performance.

To provide a tire for improving total performance of on-ice performance and wet grip performance.SOLUTION: A tire comprising a tread portion, the tread portion being formed from a rubber composition containing a rubber component, a filler containing silica, and a plasticizer, the rubber component containing more than 5% by mass and less than 50% by mass of a styrene-butadiene rubber, the rubber component contains an isoprene-based rubber and / or a butadiene rubber, a total content of the isoprene-based rubber and the butadiene rubber in the rubber component is more than 50% by mass, and a total styrene content S (% by mass) in the rubber component is less than 10, A content of the silica is more than 50 parts by mass based on 100 parts by mass of rubber components, the plasticizing agent contains C5 resins and / or C9 resins, a total content P (parts by mass) of the plasticizing agent is more than 40 parts by mass based on 100 parts by mass of the rubber components, and the tread portion includes two or more circumferential grooves and two or more lateral grooves, and one or more blocks defined by the circumferential grooves and the lateral grooves.SELECTED DRAWING: Figure 1

The invention relates to the technical field of polymer foam materials, in particular to a rubber-based composite foam material for a middle layer of a shoe sole and a preparation method of the rubber-based composite foam material for the middle layer of the shoe sole. Adding a foaming agent, sulfur, an accelerant N-cyclohexyl-2-benzothiazole sulfenamide and tetrabenzylthiuram disulfide, and carrying out secondary internal mixing to obtain a uniformly mixed styrene butadiene rubber / natural rubber-based rubber compound; putting the rubber compound into an open mill, and discharging bubbles; and finally, carrying out high-temperature curing foaming on the rolled rubber compound by using a plate vulcanizer. The rubber-based composite foam material obtained by the invention has the characteristics of simple process, light weight, uniform foam holes, high elasticity and high tensile strength, and is suitable for middle-layer materials of soles.

The invention relates to a composite waterproof high-adaptability asphalt-based waterproof coiled material and a preparation method, the coiled material is composed of a self-adhesive glue material and a structural film / base, the self-adhesive glue material is a modified asphalt glue material, and the self-adhesive glue material is composed of 100 parts of national standard asphalt, 10-40 parts of composite modified rubber, 5-15 parts of naphthenic oil and 5-10 parts of tackifying resin. 30 to 45 parts of talcum powder, 0.5 to 1.5 parts of an antioxidant and 0.5 to 1.5 parts of a heat stabilizer. The composite modified rubber is prepared from the following components in parts by weight: 20-25 parts of styrene butadiene rubber, 8-20 parts of SBS rubber, 20-40 parts of naphthenic oil, 5-10 parts of a liquid tackifier, 0.5-1.2 parts of a separant and 5-10 parts of filler. The asphalt-based waterproof coiled material is formed by compounding the self-adhesive material, a macromolecular structure film and a polyester matrix, the waterproof coiled material can achieve a good composite bonding effect with a macromolecular coiled material, and it can be guaranteed that the two materials are well combined when used in a composite mode.

The invention provides a rubber / EVA dual-purpose treating agent and a preparation method and application thereof.The rubber / EVA dual-purpose treating agent is prepared from an ethylene chloride-vinyl acetate copolymer, a styrene-butadiene-styrene block copolymer, methyl methacrylate, benzoyl peroxide, 2, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate, a styrene-butadiene-styrene block copolymer, 2, 4-trimethyl-1, 3-pentanediol monoisobutyrate and a styrene-butadiene-styrene block copolymer. The adhesive is prepared from 2, 6-di-tert-butyl-4-methylphenol, chloroprene rubber, butadiene styrene rubber, 2-hydroxyethyl methacrylate, an auxiliary agent, a diluent and a solvent. The rubber / EVA dual-purpose treating agent can be universally used for two materials, namely rubber and EVA, so that inferior-quality products and mixed use conditions in the production process are reduced, waste is not easily caused, and the rubber / EVA dual-purpose treating agent is convenient to use; components with strong pungent smell, such as trichloroisocyanuric acid, do not need to be added, so that the prepared treating agent is relatively small in smell and beneficial to environmental protection.

The invention relates to the field of polymer hydrogenation, and discloses a styrene-butadiene-styrene segmented copolymer hydrogenation method, which comprises: introducing a preheated styrene-butadiene-styrene segmented copolymer solution, a preheated catalyst and hydrogen into a circulation loop reactor, and carrying out a hydrogenation reaction. After the styrene-butadiene-styrene block copolymer solution and the catalyst are preheated, the reaction materials are subjected to hydrogenation reaction in the circulation loop reactor, so that instability caused by intermittent operation can be avoided, the stability of a hydrogenation product is high, and meanwhile, the yield of the product is improved. The preheated copolymer solution is beneficial to mixing with hydrogen and a catalyst, so that the hydrogenation efficiency is improved.

The invention belongs to the technical field of battery materials, and discloses a high-consistency sodium battery and a preparation method thereof.The high-consistency sodium battery comprises a negative plate, a positive plate, a diaphragm, electrolyte and a battery shell, the negative plate comprises a current collector, and the surface of the current collector is coated with active slurry; the active slurry is prepared from the following raw materials in parts by weight: 80 to 85 parts of coconut shell-based hard carbon, 5 to 10 parts of modified hard carbon, 2 to 4 parts of self-repairing microcapsules, 1 to 3 parts of conductive carbon black, 0.5 to 1.5 parts of SBR (Styrene Butadiene Rubber) emulsion, 0.5 to 1.5 parts of carboxymethylcellulose, 1 to 5 parts of deionized water and 40 to 45 parts of organic solvent; according to the high-consistency sodium battery negative electrode plate, coconut shell-based hard carbon is adopted as a base material, and modified hard carbon and self-repairing microcapsules are added, so that the structural stability and interface dynamic uniformity of an electrode are remarkably improved, and the consistency of a battery is improved.

The invention belongs to the field of material synthesis, and particularly relates to OCA of a rubber modified acrylate system and a preparation method of the OCA, and the OCA comprises matrix resin, a rubber modifier, a functional filler and an auxiliary agent; the matrix resin is selected from one or a combination of more of 2-ethylhexyl acrylate, methyl methacrylate and isobornyl acrylate; the rubber modifier is selected from one or a combination of more of natural rubber, butadiene styrene rubber, butadiene rubber, isoprene rubber and nitrile rubber; the functional filler is selected from nano silicon dioxide aerogel; the auxiliary agent is selected from one or a combination of more of a photoinitiator, a silane coupling agent, an antioxidant and an anti-ultraviolet aging agent. The problem of how to balance the OCA among low dielectric constant, high light transmittance, strong adhesion and flexibility is solved.

The utility model discloses an SBS (Styrene Butadiene Styrene) modifier feeding device, which belongs to the technical field of chemical engineering and comprises a support frame, a material storage box is fixedly connected to the side wall of the support frame, a first connecting plate is fixedly connected to the side wall of the material storage box, a feeding pipe is fixedly connected to the side wall of the first connecting plate, and a spiral feeding blade is rotatably connected to the inside of the feeding pipe. A second servo motor is fixedly connected to the bottom of the outer side wall of the spiral feeding blade, a supporting column is fixedly connected to the bottom of the outer side wall of the second servo motor, a supporting block is fixedly connected to the side wall of the storage box, a first servo motor is fixedly connected to the top of the outer side wall of the supporting block, and a first extrusion roller is rotationally connected to the interior of the storage box; and a first gear is fixedly connected to the outer side wall of the first extrusion roller, through cooperation between the first extrusion roller and the second extrusion roller, a modifier can be crushed to a certain degree before being put, the situation that the subsequent stirring and fusion time is prolonged due to modifier caking is reduced, and fusion of the modifier and other materials is facilitated.

The present invention relates to the field of polymers, and discloses a liquid styrene butadiene polymer and its preparation method and application, composition and application, polymer coating, adhesive and cross-linking agent. The liquid styrene butadiene polymer has the following characteristics: based on the total weight of butadiene in the liquid styrene butadiene polymer, the 1,2-structure content is 80-90 weight%; the styrene content is 15-30 weight%, and the styrene block content is 0.1-0.5 weight%; the number average molecular weight of the liquid styrene butadiene polymer is 1500-4500; the molecular weight distribution is 1.2-1.6; and the dynamic viscosity at 45°C is 100-500P. The liquid styrene butadiene polymer has a high vinyl content, a suitable molecular weight distribution, a number average molecular weight and a dynamic viscosity, thereby making the polymer have good flow properties, film-forming properties and coating properties. When used in a polymer coating, it can significantly improve the mechanical properties and glass transition temperature of the polymer coating.

The invention belongs to the technical field of modified asphalt, and particularly discloses I-D type modified asphalt based on Iran asphalt and a preparation method thereof, and the I-D type modified asphalt comprises the following components by mass: 88.75% of Iran 60 / 70 matrix asphalt, 4.5% of an SBS modifier, 3% of styrene butadiene rubber, 3.5% of rubber oil, and 0.25% of a stabilizer. According to the I-D type modified asphalt based on the Irandan asphalt and the preparation method of the I-D type modified asphalt, the technical problem that the ductility at 10 DEG C is unqualified after TFOT after traditional Middle East asphalt (Irandan asphalt) is modified is solved, the full indexes of the I-D type modified asphalt prepared by the preparation method conform to the JTGF40-2004 standard, and the high-temperature stability, the low-temperature crack resistance and the ageing resistance are remarkably improved; the modified asphalt is suitable for the fields of expressways and waterproof materials.

The invention belongs to the technical field of composite modification of high polymer materials, and discloses a preparation process of a maleic anhydride grafted modified SBS-PVC (styrene butadiene styrene-polyvinyl chloride) blended anti-aging waterproof coiled material. According to the process, a compatibility-reaction bifunctional bridge is constructed by grafting SBS with maleic anhydride, the compatibility-reaction bifunctional bridge is blended with PVC to form a matrix layer, and a strippable functional layer containing active inorganic particles, a water-soluble coalescing agent and a slow-release initiation system is compounded on the surface of the matrix layer; the functional layer prevents self-adhesion during storage, does not need to be removed during construction, and can participate in cement hydration reaction to form a chemical bonding interface. Through molecular modification, functional layer design and process integrated improvement, a full chemical bonding path from an organic polymer matrix to an inorganic concrete structure is constructed, the limitation that a traditional SBS-PVC coiled material only depends on physical adhesion is broken through, and a high-reliability, film-uncovering-free and anti-aging integrated waterproof technical scheme is achieved.

The invention relates to a method for producing a particle foam molded part, comprising fusing coated foam particles by supplying energy at least in part by an electromagnetic field having a frequency in the range of 1 MHz to 100 MHz, wherein the coated foam particles comprise a polymer coating selected from the group consisting of an acrylic polymer, a styrene-acrylic polymer, a vinyl ester polymer, an ethylene vinyl ester polymer, a styrene butadiene polymer, a polyester polymer, a polyamide polymer, a polyolefin polymer, a polyurethane polymer, the invention relates to a polyurethane-polyacrylate hybrid polymer and a polyurethane-polystyrene-butadiene hybrid polymer. The invention also relates to the molded part obtained in this method and to the use thereof in soles, sole parts, midsoles, insoles, damping elements, cushioning elements, pads, grips, floors, mattresses, sporting goods, bicycle saddles, tires and in automotive interior and exterior trim parts.

The invention relates to a composite packaging material as well as a preparation method and application thereof. The composite packaging material comprises a printing layer, a barrier layer, a supporting layer and a heat sealing layer which are sequentially arranged, the heat sealing layer comprises a corona layer, a core layer and an inner layer which are arranged in sequence; the corona layer comprises low-density polyethylene and linear low-density polyethylene; the core layer comprises low-density polyethylene and high-density polyethylene; the inner layer comprises low-density polyethylene, a styrene butadiene hydrogenated block copolymer and a compatilizer. The composite packaging material provided by the invention has relatively high stiffness, peeling strength of each layer, complete heat sealing strength and low oxygen and water vapor permeation amount, and can meet the characteristics of high barrier, low precipitation, complete sealing, easiness in uncovering and smooth interface.

The invention relates to the technical field of intelligent control, and discloses a rubber cutting machine intelligent control system and control method for styrene butadiene rubber production, and the method comprises the steps: obtaining an image sequence of the front end of a cutter in real time, measuring the full width at half maximum of a shearing zone of a main shearing local zone in the image sequence, and then calculating the critical shrinkage rate of a crack tip shearing zone. Based on the change of the critical shrinkage rate, the crack initiation remaining time representing the critical approximation degree is calculated, and the monotonic mapping relation between the crack initiation remaining time and the target cutter speed is established. According to the method, the control instruction is dynamically generated through the difference between the crack initiation remaining time and the target safety remaining time, so that the rotating speed of the motor of the rubber cutting machine is adjusted, and the rotating speed of the motor is reduced along with shortening of the crack initiation remaining time. Therefore, the crack tip behavior in the rubber cutting process is accurately controlled, crack tip jumping and kerf deformation in the cutting process are effectively prevented, the cutting precision and the production efficiency are improved, and the device has good automatic control performance and adapts to changes of characteristics of different materials.

The invention relates to the technical field of intelligent control of rubber processing equipment, in particular to an intelligent control system and method for a dehydration filter press based on styrene butadiene rubber processing, and aims to solve the problems that the rheological property of the styrene butadiene rubber is obviously influenced by brand, temperature, pressure and batch difference in the filter pressing process at present; an online dynamic modeling mechanism fusing multi-source information is lacked, and accurate and real-time characterization of viscosity and key rheological parameters is difficult to realize; according to the invention, the filter pressing rheological characteristic decision-making module fuses butadiene styrene rubber marks, real-time working conditions and similar historical batch data, through table look-up interpolation, Cross-WLF online fitting and transfer learning cooperation, high-precision dynamic prediction of rubber material viscosity and key rheological parameters is realized, multi-source estimation is adaptively fused under steady-state and dynamic working conditions, and high-precision dynamic prediction of rubber material viscosity and key rheological parameters is realized. Long-term stable operation is ensured, and accurate, robust and interpretable rheological decision support is provided for the filter pressing process.

The invention discloses raw material lifting equipment and method for styrene butadiene rubber processing, and relates to the technical field of raw material lifting and conveying. The raw material lifting equipment for styrene butadiene rubber processing comprises a fixing frame, a power unit for providing power, a conveying belt for transmission and a lifting hopper which is installed on the conveying belt and used for containing materials to be lifted and conveyed. A knocking assembly for reducing residual powdery materials and an air blowing assembly for improving the knocking effect are arranged at the position of the fixing frame, the knocking assembly comprises a knocking head which is located at the position of the lifting bucket and knocks the lifting bucket under the action of external force, so that the powdery residual materials in the lifting bucket are shaken off, material residual and accumulation can be effectively prevented, and the metering precision is guaranteed; and the method is particularly important for high-performance rubber such as tire tread rubber, and is particularly suitable for producing multi-variety, small-batch or color-sensitive rubber products by realizing one bucket and one cleaning, so that cross contamination is avoided, and the quality stability of the products is ensured.