429 results about "Styrene-butadiene" patented technology

The invention provides a hot in-place recycling asphalt mixture and a construction method, and relates to the technical field of asphalt mixtures, and the hot in-place recycling asphalt mixture is obtained by recycling old asphalt pavement materials in a high proportion, reducing new material consumption and carbon emission, realizing resource recycling and green construction and introducing a regenerant to recover the performance of aged asphalt. The high-temperature rut resistance, the low-temperature crack resistance, the fatigue resistance and the interface bonding strength of the mixture are synergistically improved by matching with the styrene butadiene rubber modifier, the basalt fiber, the nano silicon dioxide and other functional materials, and the mixture is ensured to be uniform and free of segregation through precise feeding sequence, high-pressure atomization spraying and forced stirring parameter control. The defects of gray materials, oil balls and the like are avoided, the compactness, the flatness and the overall structure stability of the regenerated pavement are improved, and the problems of performance degradation and insufficient durability of a traditional regenerated mixture are solved.

The invention relates to the technical field of high polymer materials, and provides impact-resistant polystyrene and a preparation method thereof. The impact-resistant polystyrene comprises the following raw materials in parts by weight: 70-80 parts of polystyrene, 10-15 parts of styrene butadiene rubber, 10-20 parts of wood fiber, 1-2 parts of an antioxidant, 2-3 parts of a lubricant and 0.5-1 part of a vulcanizing agent. The styrene-butadiene rubber is composed of first styrene-butadiene rubber and second styrene-butadiene rubber which have different styrene mass contents. According to the technical scheme, the problem of poor impact resistance of polystyrene in related technologies is solved.

The invention relates to the field of batteries, and discloses electrode slurry, a preparation method thereof, an electrode plate, a battery and an electric device. The electrode slurry comprises an electrode active material, a conductive agent, a binder, a plasticizer and a solvent, the binder comprises CMC (Carboxymethyl Cellulose), SBR (Styrene Butadiene Rubber) and a water-based binder, the water-based binder is an acrylic copolymer binder, and the SBR is a styrene, butadiene and acrylonitrile copolymer binder. The CMC, the SBR and the specific water-based copolymer binder are combined and applied to the electrode slurry, through matching with other components such as an active material and the like, the processing performance of the electrode slurry can be remarkably improved, for example, smooth sieving of the slurry, improvement of binding power, reduction of pole piece rebound and the like can be achieved, and meanwhile compared with slurry adopting a commercial binder, the service life of the electrode slurry is prolonged, and the service life of the electrode slurry is prolonged. And the long cycle performance of the battery can be improved, and the requirement of a high-performance battery can be further met.

The invention discloses a high-temperature instant stable dry-process high-viscoelastic asphalt modifier and a preparation method thereof, and belongs to the technical field of road engineering materials. The high-temperature instant stable dry-process high-viscoelastic asphalt modifier comprises the following components in percentage by mass: 20%-32% of matrix asphalt, 18%-20% of SBS (Styrene Butadiene Styrene), 12%-15% of a solubilizer, 35%-40% of a compound tackifier, 1.5%-2.5% of a heat conducting agent and 1.5%-2.5% of a coupling agent. The high-temperature instant stable dry-process high-viscoelastic asphalt modifier provided by the invention can be stably stored in a normal-temperature state, and does not generate a bonding phenomenon; and under the condition of high temperature, the modified asphalt can be quickly dissolved, effectively wraps the hot aggregate, is well compatible with the matrix asphalt, and has no other technical difficulties. The high-temperature instant stable dry-process high-viscosity and high-elasticity asphalt modifier provided by the invention can be directly put into commodity SBS modified asphalt to prepare high-viscosity and high-elasticity modified asphalt.

The invention discloses a self-adhesive polymer modified asphalt composite root-resistant waterproof coiled material and a preparation method thereof, and relates to the field of waterproof coiled materials, the self-adhesive polymer modified asphalt composite root-resistant waterproof coiled material comprises an isolating membrane layer, a polymer modified asphalt layer, a tire base layer, a polymer modified asphalt layer and an isolating membrane layer which are sequentially arranged from top to bottom; the physical root resistance effect of the base layer and the chemical root resistance effect of the polymer modified asphalt layer synergistically improve the root resistance performance of the waterproof coiled material. The polymer modified asphalt layer is prepared from petroleum asphalt, aromatic hydrocarbon oil, SBS, modified styrene butadiene rubber, polyisobutene, modified microcapsules and other raw materials; the modified microcapsule is obtained by grafting nano montmorillonite, hindered phenol, thioether group and the like into a wall material urea-formaldehyde resin of an epoxy resin microcapsule, and the modified styrene-butadiene rubber is obtained by grafting DOPO and sorbate group into styrene-butadiene rubber through epoxidized emulsion polymerized styrene-butadiene rubber participating in a reaction. The waterproof coiled material disclosed by the invention has excellent self-repairing capability, flame retardance and antibacterial property, and is worthy of popularization.

The invention provides primary amino modified solution polymerized styrene-butadiene rubber and a preparation method thereof. The preparation method comprises the following steps: in a polymerization system, initiating polymerization of a butadiene monomer and a styrene monomer by taking n-butyllithium as an initiator and tetrahydrofuran as a polymerization activator to obtain a styrene butadiene rubber active chain; adding a diisocyanate compound into the polymerization system to terminate polymerization, and introducing an isocyanate group to the end part of a styrene butadiene rubber active chain to obtain a styrene butadiene rubber solution; and adding a terminator into the styrene-butadiene rubber solution, stirring, separating out precipitate, and drying to obtain the primary amino modified solution polymerized styrene-butadiene rubber. The primary amino modified solution polymerized styrene-butadiene rubber is prepared by the preparation method, has high polarity and strong binding force with silicon dioxide filler, promotes generation of a more stable filler-polymer network with a more perfect structure, and remarkably improves the dynamic performance of a rubber material.

The invention discloses an anti-aging rubber product and a preparation method thereof, and belongs to the technical field of rubber product preparation, the anti-aging rubber product comprises the following raw materials by weight: 100-120 parts of styrene butadiene rubber, 2-4 parts of a modified anti-aging agent, 3-5 parts of zinc oxide, 2-3 parts of stearic acid, 2-3 parts of sulfur, and 4-7 parts of a functional reinforcing agent. The macromolecular modified anti-aging agent capable of being crosslinked and entangled with a butadiene styrene rubber molecular chain is introduced, so that the intermolecular acting force of the modified anti-aging agent and the butadiene styrene rubber is enhanced, and the defects that a small-molecular-weight anti-aging agent is easy to migrate and volatilize from a butadiene styrene rubber matrix in a high-temperature environment, a blooming phenomenon is generated and the like are effectively overcome; meanwhile, the introduction of the functional reinforcing agent effectively improves the mechanical strength and the anti-aging time of the rubber product, and through the synergistic effect of the functional reinforcing agent and the rubber product, the anti-aging performance of the rubber product is further enhanced, and the service life of the rubber product is prolonged.

The invention relates to the field of building waterproof materials, and discloses a composition for a modified asphalt coating material, the modified asphalt coating material, a preparation method and application of the modified asphalt coating material, an energy-saving waterproof coiled material and application of the energy-saving waterproof coiled material. The composition contains a main agent and an auxiliary agent, wherein the main agent comprises matrix asphalt, epoxidized soybean oil, star-shaped SBS, a thermoplastic polyurethane elastomer, butadiene styrene rubber, hydrogenated butadiene-acrylonitrile rubber and a first component; on the basis of the total weight of the composition, the content of the matrix asphalt is 40-55 wt%, the content of the epoxidized soybean oil is 5-10 wt%, the content of the star-shaped SBS is 3-5 wt%, the content of the thermoplastic polyurethane elastomer is 1-8 wt%, the content of the styrene butadiene rubber is 1-5 wt%, the content of the hydrogenated butadiene-acrylonitrile rubber is 5-10 wt%, and the content of the plasticizer is 1-5 wt%. And the content of the first component is 1-2wt%. The modified asphalt waterproof coiled material provided by the invention has the advantages of strong adhesion, good stretchability and weather resistance and the like.

The invention discloses low-temperature coagulation-accelerating anion styrene-butadiene latex for oil field well cementation and a preparation method of the low-temperature coagulation-accelerating anion styrene-butadiene latex. The low-temperature coagulation-accelerating anion styrene-butadiene latex comprises the following components in parts by mass: 100 parts of anion styrene-butadiene latex raw stock; 4 to 10 parts of a nonionic surfactant I; 2 to 4 parts of a nonionic surfactant II; 10 to 20 parts of water glass; 0.5 to 1 part of a defoaming agent; and 15-20 parts of deionized water. The low-temperature coagulation-accelerating anionic styrene-butadiene latex prepared by the invention is used in cement paste, has short thickening time at low temperature, can resist sodium chloride brine to reach semi-saturation, and can effectively control the water loss of the cement paste, improve the anti-channeling performance of a cement paste system, reduce the elastic modulus of set cement, increase the density of the set cement and improve the stability of the set cement. Therefore, formation gas is effectively prevented from invading cement stone, and well cementation quality is guaranteed.

The invention discloses a modified asphalt composition, a preparation method thereof and a modified asphalt waterproof coiled material. The modified asphalt composition comprises the following raw material components in parts by weight: 40-50 parts of composite asphalt; 8 to 10 parts of softening oil; 5 to 7 parts of SBS (Styrene Butadiene Styrene); 1 to 1.5 parts of carbon fiber; 10 to 15 parts of rubber powder; 1-2 parts of an auxiliary agent; 15 to 25 parts of a filling material; wherein the carbon fibers and the SBS are interwoven to form a modified network, and the mass ratio of the carbon fibers to the SBS is 1: (4-6); the mass ratio of the carbon fibers to the composite asphalt is 1: (27-40); the mass ratio of the carbon fiber to the auxiliary agent is 1: (0.7-2). According to the modified asphalt composition, through the synergistic effect of the composite asphalt, the carbon fibers and the SBS, the mechanical property of the modified asphalt composition is guaranteed, meanwhile, the high-temperature stability of the modified asphalt composition is improved, and the influence on a waterproof material during thermal pavement of a pavement or a bridge deck can be effectively resisted.

The invention relates to the field of lithium ion batteries, and particularly discloses an ultrathin high-heat-resistance and high-electrolyte-infiltration fiber-coated diaphragm and a preparation method of the ultrathin high-heat-resistance and high-electrolyte-infiltration fiber-coated diaphragm. An ultrathin fiber-coated diaphragm with high heat resistance and high electrolyte infiltration comprises a base membrane and a coating located on one side or two sides of the base membrane, the coating is formed by curing slurry, and the slurry comprises the following raw materials in parts by weight: 5-30 parts of a binder, 10-100 parts of an inorganic ceramic material, 1-100 parts of nanofibers, 0.1-5 parts of an auxiliary agent, 100-300 parts of a solvent and 0.1-5 parts of a dispersant; the glass transition temperature of the binder is higher than 150 DEG C; the binder is selected from at least one of a modified polyacrylic acid binder, a modified acrylamide binder, a modified polyacrylonitrile binder, a modified styrene butadiene rubber binder and a modified polyvinyl alcohol binder. The fiber-coated diaphragm provided by the invention has high heat resistance and high electrolyte wettability.

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 utility model belongs to the technical field of butadiene styrene rubber production, and particularly relates to a feeding device for butadiene styrene rubber production, which comprises a cylinder body and a first pipe orifice, the first pipe orifice is arranged on the top end face of the cylinder body, and a conical sieve plate is arranged in the cylinder body below the first pipe orifice. A plurality of vibration motors are uniformly arranged on the inner wall of the cylinder body below the conical sieve plate in the circumferential direction, the output ends of the vibration motors are connected with a connecting plate, the connecting plate is connected with the conical sieve plate, a slag discharge pipe is arranged below the conical sieve plate, and the slag discharge pipe is connected with the conical sieve plate through an elastic cloth pipe; the utility model has the advantages that: through the arrangement of the conical sieve plate, the elastic scraper blade, the vibration motor, the cambered surface elastic plate and the like, various raw materials can be subjected to bonding separation treatment before being fed, and also can be subjected to efficient dust and slag removal treatment; and the forming quality of the rubber is effectively improved.

The invention discloses a binder for a secondary battery, negative electrode slurry, a pole piece and a lithium ion battery, the binder for the secondary battery comprises a binder A and a binder B, the binder A comprises a polyacrylic acid polymer, and the binder B comprises styrene butadiene rubber. The two binders are matched, and an effective synergistic effect can be formed between the binders, so that a cross-linked network is formed, cyclic expansion of an active material in an electrode is inhibited, and continuous generation of an SEI film and damage to an electrode structure are avoided.

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 provides a negative electrode piece, a battery, an energy storage device and electric equipment, the negative electrode piece comprises a negative electrode current collector, at least one surface of the negative electrode current collector is provided with a negative electrode material layer, and the negative electrode material layer comprises a negative electrode material and a negative electrode binder; the negative electrode binder comprises modified styrene-butadiene rubber particles formed by a styrene-butadiene rubber main chain, long-chain unsaturated fatty acid with the carbon chain length of C14-C24 and an anhydride compound; the average particle size of the modified styrene butadiene rubber particles is D50, and D50 is larger than or equal to 190 nm and smaller than or equal to 210 nm.

The invention relates to the field of cable materials, in particular to a wear-resistant modified rubber cable material for a new energy automobile and a preparation method of the wear-resistant modified rubber cable material, and aims to solve the problems that an existing cable material for the new energy automobile is insufficient in wear resistance and mechanical strength, so that a cable is easy to crack, and potential safety hazards are caused. And the use requirements of the new energy automobile in a complex environment are difficult to meet. According to the preparation method, wear-resistant modified rubber, styrene-butadiene rubber and low-density polyethylene are used as matrixes, the comprehensive performance of the cable material is remarkably improved by integrating the advantages of the three materials, and then modified potassium titanate whiskers are added, so that the wear resistance and mechanical strength performance of the cable material are effectively improved; the cable can meet the use requirements of a new energy automobile in a severe environment, shows excellent protection performance, effectively prolongs the service life of the cable, and provides a cable transmission system which is longer in service life, safer and more reliable for the new energy automobile.

The invention provides an in-chain functionalized solution polymerized styrene-butadiene rubber and an in-chain modification method thereof. The method comprises the following steps: in a polymerization system, initiating polymerization of a butadiene monomer and a styrene monomer by taking n-butyllithium as an initiator and tetrahydrofuran as a polymerization activator to obtain a styrene butadiene rubber active chain; adding a terminator into the polymerization system to terminate the polymerization reaction to obtain a styrene butadiene rubber solution; the method comprises the following steps: adding a thiol compound and a free radical initiator into a styrene-butadiene rubber solution, heating and stirring the styrene-butadiene rubber solution, after a modification reaction is finished, adding alcohol to separate out and precipitate the styrene-butadiene rubber, and drying to obtain the chain-functionalized solution polymerized styrene-butadiene rubber. The in-chain functionalized solution polymerized styrene-butadiene rubber is prepared by the preparation method, and the interface bonding force between the white carbon black and the styrene-butadiene rubber can be enhanced, so that the hysteresis loss of a final tire rubber product is reduced, and the tire rubber product is endowed with high wear resistance, fatigue resistance and excellent wet skid-rolling resistance balance.

The invention discloses a preparation method of a modified asphalt tire-free waterproof coiled material, which is characterized by comprising the following steps: taking the following raw materials in percentage by mass: 41-43% of asphalt, 9-12% of softening oil, 10-11% of tire rubber powder, 1-3% of SBS (Styrene Butadiene Styrene), 3-4% of SBR (Styrene Butadiene Styrene), 1-2% of basalt fiber and 28-34% of filler, mixing and stirring the asphalt and the softening oil, heating to 190-195 DEG C, adding the tire rubber powder, heating to 190-195 DEG C, and stirring for 20-30 minutes, thereby obtaining the modified asphalt tire-free waterproof coiled material. Cooling to 185-190 DEG C, adding SBS and SBR, adding basalt fiber, carrying out heat preservation and stirring, adding a filler, and stirring and mixing to obtain an asphalt composition; and coating one surface of the film with the asphalt composition, and then covering a layer of film, thereby obtaining the modified asphalt tire-free waterproof coiled material. The prepared modified asphalt tire-free waterproof coiled material is good in performance and suitable for buildings to resist external rainwater erosion, prevent underground water leakage and the like.

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 high-viscosity and high-elasticity asphalt and a preparation method thereof, and relates to the technical field of asphalt materials. The high-viscosity and high-elasticity asphalt is prepared from the following raw materials in parts by weight: 100 parts of matrix asphalt, 5 to 8 parts of a tackifier, 2 to 3 parts of nano montmorillonite, 1.5 to 3 parts of graphene oxide, 8 to 12 parts of modified SBS (Styrene Butadiene Styrene), 0.5 to 1.2 parts of an anti-aging agent and 0.1 to 0.3 part of a cross-linking agent. The high-viscosity and high-elasticity asphalt prepared by the preparation method disclosed by the invention has good elastic recovery rate and ageing resistance.

The utility model relates to the technical field of rubber coiling devices, and discloses an automatic coiling device for styrene butadiene rubber foaming materials, which comprises a rack with a groove, and a reel for coiling materials is rotatably mounted in the groove on the rack. A driving motor used for driving the reel to rotate is installed on one side of the top of the rack, the end, close to the driving motor, of the outer wall of the reel is sleeved with a disc frame, and six stop levers are hinged to the end, away from the driving motor, of the reel. According to the automatic coiling device for the styrene butadiene rubber foaming material, the conical rod is rotationally installed at one end of the reel and used for limiting the material between the conical rod and the disc frame, and when the material needs to be disassembled, only the driving source needs to drive the conical rod to rotate in the direction away from the reel, so that the conical rod is in an inclined downward state; and at the moment, the coiled material is pulled out from the disc frame, the material taking complexity is reduced, the coiled material can rapidly fall, the working efficiency is high, and the working intensity is reduced.

The invention discloses a preparation method of steel slag asphalt concrete capable of quickly melting ice and snow under the action of microwaves, which comprises the following steps: mixing SBS (styrene butadiene styrene), decrosslinked rubber and a wave-absorbing modifier to obtain a composite modifier; the composite modifier and matrix asphalt are blended, meanwhile, a stabilizer and a compatilizer are added, shearing and stirring are conducted, and wave-absorbing modified asphalt is obtained; placing the steel slag powder in an alkali solution, stirring at the temperature of more than 100 DEG C, reacting at normal pressure for more than half an hour, and after the reaction is finished, filtering and drying a product for the first time to obtain the wave-absorbing reinforced steel slag powder; the wave-absorbing modified asphalt, the steel slag coarse and fine aggregate and the wave-absorbing reinforced steel slag powder are subjected to grading design and stirred for 120-200 s at the temperature of 185-195 DEG C, and the steel slag asphalt concrete is obtained; when microwaves act on the accumulated and frozen steel slag asphalt concrete, the steel slag aggregate, the wave-absorbing reinforced steel slag powder, the wave-absorbing reinforcing agent and the like have dielectric loss and magnetic loss on the microwaves, the asphalt concrete converts microwave electromagnetic energy into heat energy, and rapid ice and snow melting of the steel slag asphalt concrete is achieved.

The invention relates to the field of all-solid-state battery material preparation, and particularly discloses a composite positive electrode binder and a preparation method thereof, a positive plate and a preparation method thereof, and an all-solid-state battery, the composite positive electrode binder comprises a first high polymer material and a second high polymer material, and the molecular weight of the high polymer materials is 104-106; the first high polymer material comprises at least one of poly (ethylene-methacrylate-glycidyl methacrylate), poly (ethylene-glycidyl methacrylate) and polyglycidyl methacrylate; the second high polymer material comprises at least one of hydrogenated nitrile butadiene rubber (HNBR), nitrile butadiene rubber (NBR), ethyl cellulose (EC), styrene butadiene rubber (SBR) and polyvinylidene fluoride (PVDF); the binder is rich in polar groups, can be easily dissolved in a non-polar solvent, and does not damage sulfide electrolyte. The prepared positive pole piece has the ion / electron conductivity higher than that of a traditional binder, a lithium ion transmission channel can be widened, and the cycle performance of the battery is improved.

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 invention relates to the technical field of road materials, in particular to a preparation method of high-elasticity rubber powder composite modified cold-mixed asphalt. The preparation method comprises the following steps: mixing matrix asphalt, high-elasticity rubber powder, an SBS (Styrene Butadiene Styrene) modifier, a cross-linking agent, an activating agent and polyurethane microcapsules; wherein the polyurethane microcapsule takes polyurethane as a shell layer and an asphalt regenerant as a core material, and when the shell layer is prepared, chitosan, sodium lignin sulfonate, acrylamide, trifluoroethyl acrylate and acrylic acid react to obtain composite powder; the prepared cold-mixed asphalt mixture can be mixed and paved at normal temperature / low temperature, and after paving, the high-elasticity rubber powder and the matrix asphalt are fully swelled to form a modified asphalt cementing material, so that the high-temperature stability of the cold-mixed asphalt mixture is enhanced, and the strength of a cold-mixed asphalt pavement is improved. In addition, the cold-mix asphalt waterproof coating has good self-healing performance at the room temperature, and the requirement for timely traffic of a cold-mix asphalt road is met.

The invention belongs to the field of waterproof coatings, and provides a modified waterproof coating for roads and bridges and a preparation method thereof. The anti-rust asphalt is prepared from the following raw materials in parts by weight: 30 to 40 parts of SBS (Styrene Butadiene Styrene) modified asphalt, 15 to 25 parts of waterborne polyurethane resin, 5 to 10 parts of nano silicon dioxide, 3 to 5 parts of nano aluminum oxide, 3 to 8 parts of glass fiber, 10 to 15 parts of ground calcium carbonate, 1 to 2 parts of efficient dispersing agent, 0.5 to 1 part of organic silicon defoaming agent, 1 to 2 parts of hydroxypropyl methyl cellulose thickening agent, 1 to 2 parts of composite anti-rust agent and 15 to 25 parts of deionized water. 0.5 to 1 part of a stabilizer and 0.2 to 0.5 part of an antioxidant; a firm net-shaped structure is formed through the glass fibers, so that frictional wear caused by vehicles, pedestrians and natural factors is effectively resisted; the nano silicon dioxide and the nano aluminum oxide are used for filling pores, the surface hardness and the wear resistance are enhanced, the wear resistance of the coating is microcosmically and macroscopically improved by cooperating with the glass fibers, and the nano material is good in stability and prevents the wear resistance from being reduced along with time.

The invention discloses a hydrogenated styrene-butadiene block copolymer impurity removal device and method, and relates to the technical field of impurity removal devices.The hydrogenated styrene-butadiene block copolymer impurity removal device comprises a reactor, a supporting frame is fixedly installed on the outer wall of the reactor, a feeding pipe is fixedly installed at the top of the reactor, and a discharging pipe is fixedly installed at the bottom of the reactor; the impurity removal device is arranged in the reactor, the impurity removal device comprises a motor, a rotating rod, a filter frame, a threaded plate, a reciprocating threaded groove, a fixed rod, a filter plate, a circular ring plate, an elastic telescopic block, a fixed frame and a rotating plate, the rotating rod rotates to rotate the reciprocating threaded groove, and the reciprocating threaded groove rotates to drive the threaded plate to reciprocate up and down; the two circular ring plates move in the direction away from the rotating rod to push away impurities scraped off from the filter plate, and the situation that the impurities are always in the filter frame, the filtering effect of the filter frame is reduced, and the impurity removal efficiency is affected is prevented.

The present application relates to a capped, modified solution-styrene butadiene rubber and a preparation method therefor. The method comprises: in a multi-tank continuous reaction process, mixing styrene and butadiene in a solvent, then mixing with a structure modifier and an initiator to copolymerize styrene and butadiene to obtain an intermediate polymer; and performing a capping reaction with a capping monomer to obtain a capped polymer; then reacting with a modifier to obtain a modified polymer; and finally mixing with a terminator to obtain a capped, modified solution-styrene butadiene rubber. Thus, the problem of poor filler dispersibility is improved, which can stabilize the polymer molecular structure and effectively improve the processing performance of a product.

A rubber composition suited to forming a tread for a winter tire includes, expressed as parts by weight per hundred parts of rubber (phr): 100 phr of an elastomer component including a polybutadiene rubber and a styrene butadiene rubber. A filler component includes at least 10 phr aluminum hydroxide, at least 70 phr silica, and 0-20 phr carbon black. The composition further includes an organosilane coupling agent, one or more processing aids, selected from liquid plasticizers, waxes, and resins and a cure package including a sulfur-based curing agent, an activator selected from inorganic activators, organic activators, and combinations, and a cure accelerator.