315 results about "Polybutadiene" patented technology

The invention belongs to the technical field of RAP recycled asphalt mixtures, and particularly relates to a high-dosage RAP recycled asphalt mixture for alpine regions and a preparation method of the high-dosage RAP recycled asphalt mixture. The high-dosage RAP recycled asphalt mixture for the alpine region is characterized by comprising the following components in percentage by mass: 50-60% of RAP, 3-6% of mineral powder, 1-3% of new asphalt, 1-2% of a composite regenerant, 1-2% of a modifier and the balance of a new aggregate, the composite regenerant is composed of pine tar, plant-based epoxy ester oil, cashew nut shell oil and a penetrant. The modifier is prepared from regenerated low-density polyvinyl chloride, hyperbranched epoxy resin and liquid polybutadiene rubber coated waste rubber powder. According to the technical scheme provided by the invention, the technical problems of poor low-temperature performance, water stability and freeze-thaw cycle stability when a high-dosage RAP recycled asphalt mixture is used in an alpine region are solved.

The invention discloses a high-strength, low-temperature-resistant and aging-resistant polymer rubber material and a preparation method thereof in the technical field of rubber materials. The high-strength, low-temperature-resistant and aging-resistant polymer rubber material comprises the following components in parts by weight: 100-120 parts of a rubber matrix, 44-62.5 parts of an interface auxiliary agent, 8-15 parts of a vulcanization system, 4-5 parts of a protection system and 8-12 parts of a toughening agent. According to the invention, a multi-component synergistic system is constructed by the multifunctional reinforcer, amino-terminated polysiloxane, amino-terminated polybutadiene and epoxidized soybean oil, and meanwhile, a carbon black / Si-69 interface assistant and a protection / vulcanization system are optimized, so that the synergistic improvement of mechanical properties, low temperature resistance and aging resistance is achieved; the technical problems that traditional rubber is single, excellent in performance and unbalanced in comprehensive performance are solved.

The invention provides a flexible switching production method and equipment for low cis-polybutadiene rubber (LCBR), solution polymerized styrene-butadiene rubber (SSBR) and hydroxyl-terminated liquid polybutadiene rubber (HTPB), the flexible switching production equipment comprises an initiator production device and a polymerization unit, and the flexible switching production method comprises the following steps: mixing cyclohexane and n-hexane according to a volume ratio of 6.5: 3.5-7: 3, adding an initiator, and stirring to obtain a mixture; forming a mixed solvent; the method comprises the following steps: adding a monomer, an active agent, an initiator and a mixed solvent into a polymerization kettle 31 of a polymerization unit, and carrying out polymerization reaction to obtain a low-cis-polybutadiene, solution polymerized styrene-butadiene or hydroxyl-terminated liquid polybutadiene rubber solution; a novel protection initiator tert-butyl dimethyl siloxy propyl sodium is designed, and hydroxyl-terminated liquid polybutadiene rubber with a controllable structure is prepared through anionic living polymerization. According to the process, shutdown for kettle cleaning is not needed, the low cis-polybutadiene, the solution polymerized styrene-butadiene and the hydroxyl-terminated liquid polybutadiene rubber can be produced on the same polymerization device in a flexible switching manner, and the overall production efficiency is improved.

The application discloses a kind of solution polybutadiene rubber particle conveying devices, it is related to conveying technical field, including belt conveyor, and belt conveyor is provided with distributing device and discharging device, and discharging device is located above distributing device, discharging device can quantitatively release rubber particles, and the discharge port of discharging device is provided with multilayer mouth structure, and the outside of multilayer mouth structure is connected with multidirectional traction structure, the present application is quantitatively filled with rubber particles by discharging device and releases, and the released rubber particles are layered and buffered by multilayer mouth structure Release, avoid the direct impact of rubber particles on belt conveyor, resulting in ejection to outside, reduce the waste of rubber particles, and the width of internal communication of multilayer mouth structure is expanded by multidirectional traction structure traction, so that the width of internal communication of multilayer mouth structure is larger, so as to avoid the blockage of rubber particles on discharging device and multilayer mouth structure.

The invention discloses a composite coating diaphragm and a preparation method thereof and a secondary battery, the composite coating diaphragm comprises a base membrane and a composite functional coating compounded on the surface of the base membrane, the composite functional coating comprises a first functional coating relatively close to the base membrane and a second functional coating relatively far away from the base membrane, the porosity of the first functional coating is smaller than that of the second functional coating, and the raw material components of the first functional coating comprise modified nanocellulose obtained by double-grafting cis-1, 4-polybutadiene and polyethylene glycol chain segments and gas-phase aluminum oxide. By constructing a diaphragm coating with a gradient pore structure and combining an advanced material modification technology, the composite coating diaphragm integrates high thermal stability, excellent electrolyte wettability and low-temperature adaptability, and can still keep stable structure and interface characteristics under an extreme temperature working condition; therefore, the method has good expandability and industrial application prospects, and is suitable for development and application requirements of high-performance lithium ion batteries and next-generation energy storage devices.

A tire comprising a rubber composition comprising, based on 100 parts per weight elastomer, a silane-coupled carbon nanotube (CNT) in a polybutadiene masterbatch. The rubber composition further comprises a first elastomer mixed with the masterbatch. The first elastomer can be the same as or different from the polybutadiene in the masterbatch. The rubber composition optionally comprises a second elastomer mixed with the masterbatch. A total elastomer in the rubber composition comprises from about 25 phr to about 75 phr of polybutadiene and from about 25 to about 75 phr of at least the first or second elastomer.

A thermosetting composition for injection molding comprising: (A) a compound represented by the following formula (A2) or (A3), and (B) a thermal polymerization initiator; wherein the composition further comprises no (G) titanium oxide or comprises (G) titanium oxide, when the composition comprises the component (G), the content of the component (G) is 5 parts by mass or less, based on a total of 100 parts by mass of components other than the component (B) and the component (C); and the composition comprises no polybutadiene di(meth)acrylate:

Provided is a binder for an electrode of a lithium secondary battery, said binder being capable of suppressing an increase in internal resistance due to charge and discharge. A binder for an electrode of a lithium secondary battery according to an embodiment contains an aqueous dispersion of a polyurethane salt obtained by reacting components (A), (B), (C), and (D), the polyurethane salt substantially not containing a structure derived from an amine-based chain extender: (A) a polyisocyanate component; the polyurethane resin contains at least one selected from the group consisting of diphenylmethane diisocyanate and a modified body thereof; (B) a polyol component comprising a hydrogenated polybutadiene polyol; (C) carboxylic acid containing an active hydrogen group; and (D) water as a chain extender.

The invention discloses artificial board emulsifying wax, which is prepared from the following raw materials in percentage by mass: 25 to 40 percent of paraffin, 3 to 5 percent of compound emulsifier, 2 to 4 percent of cationic starch, 3 to 7 percent of liquid polybutadiene and 44 to 67 percent of water, the compound emulsifier is a nonionic emulsifier, and the hydrophilic-lipophilic balance value is 9-10. The artificial board emulsifying wax is good in waterproofness and high in strength when applied to artificial boards.

This invention discloses a composite additive for repairing the foaming properties of recycled polystyrene, relating to the field of recycled polystyrene. It comprises: 30-50 parts of a matrix repair component, 20-35 parts of a nucleating-reinforcing composite component, 10-20 parts of an antibacterial and flame-retardant composite component, and 5-10 parts of a dispersant. Modified rosin ester and polybutadiene oligomers are used as the matrix repair component, combined with nano-calcium carbonate and talc as the nucleating-reinforcing composite component, and further combined with phytic acid and quaternized chitosan functional components and zinc stearate dispersant to form a stable composite system. This system imparts antibacterial and flame-retardant properties to the product, solving the problem of single-function traditional additives, significantly improving the quality of recycled material products, realizing high-value utilization of recycled materials, and simultaneously repairing damaged molecular chains in recycled materials, improving processing flowability and cell nucleation effect, thus compensating for the deficiency of reduced foaming performance in recycled polystyrene.

The invention discloses a high-temperature-resistant low-friction-coefficient low-abrasion sealing material and a preparation method thereof, and belongs to the technical field of sealing materials. The sealing material is prepared from the following raw materials in parts by mass: 60 to 80 parts of hydrogenated butadiene-acrylonitrile rubber, 20 to 40 parts of hydrogenated carboxyl butadiene-acrylonitrile rubber, 40 to 50 parts of carbon black N234, 4 to 6 parts of modified carbon fiber, 2 to 4 parts of modified hexagonal boron nitride, 3 to 5 parts of liquid polybutadiene, 3 to 4 parts of composite vulcanizing agent, 2 to 3 parts of zinc oxide, 1 to 2 parts of rubber anti-aging agent 445, 1 to 2 parts of anti-aging agent MB, 0.2 to 0.5 part of accelerant BZ and 0.5 to 2 parts of stearic acid. The modified carbon fiber is obtained by growing molybdenum disulfide on the surface of carbon fiber in situ and performing amination modification, the modified hexagonal boron nitride is obtained by performing grafting reaction on hydroxylated hexagonal boron nitride and an epoxy silane coupling agent, and the sealing material provided by the invention has high wear resistance and high temperature resistance.

The invention discloses a two-component polyurethane adhesive as well as a preparation method and application thereof, and the adhesive comprises a component A and a component B in parts by weight, the component A is prepared from 15 to 30 parts of hydroxyl-terminated polybutadiene, 20 to 40 parts of polyester polyol, 5 to 15 parts of epoxy modified polyether polyol, 1 to 5 parts of phosphate ester, 1 to 5 parts of micromolecular dihydric alcohol chain extender, 2 to 10 parts of silane coupling agent, 1 to 5 parts of thixotropic agent, 20 to 50 parts of filler, 5 to 15 parts of flame retardant and 0.1 to 0.5 part of catalyst; the component B is prepared from the following components in parts by weight: 60 to 80 parts of polyisocyanate and 20 to 40 parts of polyurethane prepolymer. The bi-component polyurethane adhesive is used for bonding SMC or metal, has high strength and high elasticity, balances the thermal expansion coefficient difference between the SMC and the metal, and can realize reliable bonding of the SMC without complex surface treatment.

Expandable styrene polymers comprising polymeric brominated flame-retardant, wherein the polymeric brominated flame-retardant comprises at least one brominated polybutadiene block having a bromination degree between 33 and 75%, based on the double bonds in the polybutadiene block before bromination, a process for producing such expandable styrene polymers by suspension polymerization and particulate foam moldings made therefrom.

The invention relates to the technical field of adhesives, in particular to a polyurethane adhesive and a preparation method thereof. The adhesive is prepared from the following components in parts by weight: 60 to 90 parts of total polyol, 20 to 24 parts of isocyanate, 5.5 to 6 parts of a chain extender and 3 to 8 parts of a nano reinforcing material. According to the polyurethane adhesive, polyether polyol polypropylene glycol containing long-chain alkyl and hydroxyl-terminated hydrogenated polybutadiene are introduced into a polyurethane prepolymer to jointly serve as components of polyol, the components react with diisocyanate TDI to generate polyurethane, and then the polyurethane is compounded with nano SiO2 to prepare the polyurethane adhesive. The prepared polyurethane adhesive is high in tensile strength, large in toughness and good in tear resistance, has good adhesion to a PP base material, and solves the problems that a traditional polyurethane adhesive is low in adhesion strength to the PP base material, poor in heat resistance and depends on pretreatment.

This invention provides a phosphorus-containing flame retardant, its preparation method and application, and a resin composition and its application, specifically relating to the field of polymer materials technology. The phosphorus-containing flame retardant provided by this invention achieves an integrated design of the flame-retardant unit and the elastic matrix at the molecular scale by directionally and controllably grafting phosphorus-containing groups M onto the active sites of the polybutadiene soft segments in a styrene-butadiene-styrene block copolymer via covalent bonds. This structure retains the inherent high flexibility, impact resistance, and processing rheological properties of the styrene-butadiene-styrene block copolymer while imparting intrinsic, durable, and uniformly distributed flame-retardant capabilities to the material. Simultaneously, because the phosphorus element is anchored to the polymer backbone / side chain, no small molecule polar impurities are introduced, significantly suppressing dielectric polarization loss and hygroscopicity increases. This provides a structural basis and performance guarantee for the subsequent construction of a high-end thermosetting resin system for copper-clad laminates with low Dk / Df, high Tg, and low CTE.

The application discloses modified low-cis polybutadiene rubber, sidewall rubber and a preparation method thereof, a tire and a vehicle using the tire, and belongs to the technical field of rubber tire production and manufacturing. The modified low-cis polybutadiene rubber is modified by an amine group, and a star-shaped branched structure is used to obtain uniform distribution of carbon black and other additives, so that good resistance reduction performance of a corresponding tire is obtained, and the sidewall of the corresponding tire has better flex resistance and fatigue resistance.

The invention relates to a UV-LED blue paint for protecting a power battery shell, a preparation method and a coating applied by the UV-LED blue paint, and belongs to the technical field of paints. The UV-LED blue coating is prepared from the following components in parts by weight: 5 to 15 parts of a polybutadiene modified acrylate oligomer, 20 to 40 parts of a bisphenol A epoxy acrylate oligomer, 35 to 50 parts of a monofunctional reactive diluent, 5 to 15 parts of a bifunctional reactive diluent, 3 to 10 parts of a multifunctional reactive diluent, 4 to 7 parts of a photoinitiator, 0.6 to 2.2 parts of an auxiliary agent and 1 to 3 parts of blue color paste, the monofunctional reactive diluent is prepared from the following components in parts by weight: 30 to 40 parts of isobornyl-containing acrylate and 5 to 10 parts of lauric acid acrylate. A blue coating formed by the blue coating has good adhesive force, excellent electrolyte resistance and boiling resistance and low viscosity, so that the blue coating can be subjected to mass production through spraying, the curing speed is high, and the production efficiency is improved.

The invention relates to a mutual impregnation process method of insulating paint and application of the mutual impregnation process method. The mutual impregnation process method comprises the following steps of: respectively impregnating the stator of the traction motor with insulating paint 1 and insulating paint 2 to finish mutual impregnation of the insulating paint; the insulating paint 1 comprises any one of polybutadiene paint, organic silicon paint or epoxy anhydride paint; and the insulating paint 2 comprises epoxy modified polyesterimide paint. The mutual impregnation process method of the insulating paint provided by the invention is simple to operate, the electrical performance, the moisture-proof sealing performance and the damp-heat aging resistance of the traction motor can be obviously improved through secondary impregnation of the specific high-performance insulating paint, the environmental adaptability is good, and the comprehensive performance is excellent.

This invention discloses a lubricating grease composition, belonging to the field of lubricating grease technology. The lubricating grease is made from the following raw materials in parts by weight: 20-40 parts base oil, 10-35 parts liquid polybutadiene, 10-30 parts liquid polyisoprene, 10-30 parts liquid styrene-isoprene polymer, 4-15 parts thickener, 0.1-2 parts antioxidant, 0.1-1.5 parts rust inhibitor, and 0.5-3.2 parts extreme pressure anti-wear agent. The lubricating grease of this invention retains the basic properties of lubricating grease while ensuring high viscosity and high adhesion, as well as low-temperature fluidity. Even in a low-temperature environment of -60°C, it can ensure low-temperature start-up, low operating torque, low-temperature pumpability, and fluidity.

To provide an improved rubber mixture obtained by a simple method and exhibiting improved characteristics, to provide a method for producing a rubber product, and to provide the rubber product.SOLUTION: A rubber mixture comprising a rubber and a liquid polybutadiene, wherein the polybutadiene is liquid at a temperature of 20 °C. and a pressure of 98.06655 kPa, and wherein the liquid polybutadiene comprises only C and H atoms and has an average molecular weight (Mw) of from 1500 to 5000g / mol as measured by gel permeation chromatography, a method for producing a rubber product by vulcanization using the rubber mixture according to the present invention as a starting material, and a rubber product obtained by this method are provided.SELECTED DRAWING: None

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

The invention discloses a multifunctional rubber auxiliary and a preparation method thereof, and belongs to the technical field of rubber processing. The method comprises the following steps: compounding sulfydryl-isocyanate bifunctional cage type silsesquioxane with epoxy-terminated polysulfide; the combined sulfydryl-terminated liquid polysulfide rubber and allyl glycidyl ether are subjected to a photo-initiation click reaction to prepare epoxy-terminated polysulfide, the epoxy-terminated polysulfide, polybutadiene, stearic acid, zinc oxide and an accelerant are blended and granulated, and the multifunctional rubber auxiliary master batch is obtained. The auxiliary agent can provide nano reinforcement, dynamic covalent cross-linking and interfacial compatibility effects in rubber mixing at the same time, and the mechanical property, aging resistance and processing stability of vulcanized rubber are remarkably improved. And the method is suitable for industrial production.

The present application relates to a kind of low-temperature-resistant oil-resistant damping rubber composite material for outdoor engineering and its preparation method, belong to damping rubber modification technical field.The low-temperature-resistant oil-resistant damping rubber composite material for outdoor engineering described in the present application is prepared by high-vinyl polybutadiene rubber, butyl rubber, flocculation butyl nitrile rubber / oxidized carbon nanotube composite raw rubber and auxiliary mixing co-vulcanization.The vinyl content of high-vinyl polybutadiene rubber is 83-85%, Mn is 430-470, and the relative molecular mass distribution index is 2.0-2.5.The low-temperature-resistant oil-resistant damping rubber composite material for outdoor engineering described in the present application has a wider damping temperature range, excellent low-temperature damping performance, mechanical properties and oil resistance;Meanwhile, a simple and convenient preparation method is provided.

The invention belongs to the technical field of PVC (polyvinyl chloride) materials, and particularly relates to a non-toxic PVC material for children's toys and a preparation method of the non-toxic PVC material. The non-toxic PVC material for the children's toys comprises the following components in percentage by mass: 30-50% of PVC powder, 20-40% of a plasticizer, 8-15% of a functional aid, 8-15% of an epoxidized soybean oil-calcium carbonate compound, 0.5-2% of a stabilizer and 0.1-1% of a lubricant, the functional auxiliary agent is prepared from maleic anhydride modified liquid polybutadiene rubber, ethylene-ethyl acrylate-maleic anhydride copolymer micro powder and a styrene-isoprene-styrene triblock copolymer. The non-toxic PVC material for children's toys provided by the invention is non-toxic, does not have the problems of stickiness, oil leakage and the like, and has excellent printability.

The invention discloses a flex-resistant rubber composition for a triangular belt compression layer and a preparation method thereof. The flex-resistant rubber composition is prepared from the following components in parts by weight: 70 to 80 parts of natural rubber, 20 to 25 parts of butadiene styrene rubber, 10 to 15 parts of liquid polyisoprene rubber, 20 to 25 parts of layered inorganic powder, 1 to 2 parts of maleic anhydride polybutadiene, 5 to 10 parts of blue cotton short fiber, 50 to 60 parts of carbon black, 5 to 10 parts of white carbon black, 3 to 5 parts of coupling agent, 2 to 4 parts of tackifier, 2 to 3 parts of plasticizer, 6 to 8 parts of activator, 1.5 to 2.0 parts of anti-aging agent, 0.5 to 1 part of zinc methacrylate, 1 to 2 parts of accelerant and 2.8 to 3.0 parts of sulfur. The liquid polyisoprene rubber is utilized to mechanically shear and modify the layered inorganic powder, and when the liquid polyisoprene rubber is used for the rubber composition, the layered slippage property is achieved, so that stress concentration is avoided. The blue cotton short fiber is cooperated to increase the strength, limit the movement of a rubber molecular chain, prevent crack propagation and improve the flex resistance.

Provided is a polyol composition which has excellent storage stability and with which it is possible to obtain a cured object in which an excessive increase in elastic modulus at low temperatures can be suppressed while having a high elastic modulus at room temperature. Also provided is a two-component curable polyurethane resin composition.　A polyol composition according to an embodiment is a composition to be reacted with a polyisocyanate to obtain a polyurethane resin, and contains a polybutadiene polyol, a trifunctional polyether polyol, an ether-ester plasticizer, and a phthalate ester plasticizer.

The present application relates to the field of polyurethane elastomer material, and particularly relates to a polybutadiene silicone diol, a preparation method thereof and a thermoplastic silicone polyurethane elastomer. The polybutadiene silicone diol with the structure of formula (I) has a moderate solubility parameter, the thermoplastic silicone polyurethane elastomer prepared from the polybutadiene silicone diol has a small degree of phase separation in the molecular chain of the elastomer, the product has unexpectedly good transparency, and in addition, the elastomer has the characteristics of PDMS and CTPB, and has excellent mechanical properties, outstanding low-temperature resilience, aging resistance, surface hydrophobicity and smoothness and other properties.

The application discloses a water-based inorganic coating for a concrete structure and a preparation method thereof. In one aspect, the application provides a water-based inorganic coating for a concrete structure, which comprises an A component and a B component; the A component comprises the following components in a proportion: modified water glass 20-30 parts, fine filler 8-12 parts, ultra-fine filler 6-10 parts, fluorosilicate 0.5-1 part, Portland cement 50-60 parts, retarding water reducing agent 2-4 parts, and water 25-35 parts; the B component comprises the following components in a proportion: polybutadiene type silane-terminated polyurethane prepolymer 30-40 parts, Portland cement 50-60 parts, nano titanium dioxide 18-24 parts, polycarboxylic acid type water reducing agent 1-1.5 parts, and water 35-45 parts. In another aspect, the application further provides a preparation method of the water-based inorganic coating for a concrete structure. The application has excellent deep penetration crystallization performance, and has strong waterproof performance and anti-permeation performance.

The invention discloses an epoxy-maleimide modified polybutadiene and butyl hot melt adhesive and a preparation method of the epoxy-maleimide modified polybutadiene and butyl hot melt adhesive. The epoxy-maleimide modified polybutadiene is obtained by reacting epoxidized polybutadiene and maleimide carboxylic acid under the action of a polymerization inhibitor and a phase transfer catalyst. Epoxy-maleimide modified polybutadiene is introduced into raw materials such as polyisobutene, furyl phenol is used as a dynamic cross-linking agent, and the epoxy-maleimide modified butyl hot melt adhesive is prepared. The butyl hot melt adhesive realizes crosslinking at normal temperature, has relatively high hardness, water resistance and shear strength, and can realize crosslinking bond dissociation at a high temperature of 90 DEG C or above, so that the butyl hot melt adhesive has relatively good processability; in addition, the butyl hot melt adhesive disclosed by the invention is good in adhesive strength with glass, high in curing speed and long in storage life.