208 results about "Liquid rubber" patented technology

The invention relates to a high / low-temperature-resistant wear-resistant tear-resistant fluorosilicone rubber compound and a preparation method thereof, and belongs to the technical field of special rubber materials, the high / low-temperature-resistant wear-resistant tear-resistant fluorosilicone rubber compound comprises the following components: raw fluorosilicone rubber, a reactive liquid rubber compatibilizer, a reinforcing filler, a tear-resistant aid, a high-temperature-resistant aid, a vulcanizing agent, an accelerant, an anti-aging agent and an anti-attrition filler, the provided reaction type liquid rubber compatibilizer contains vinyl carboxyl liquid fluorosilicone rubber, the tear-resistant auxiliary agent contains zinc polymethacrylate, the high-temperature auxiliary agent contains vinyl fluorosilane modified carbon nanotubes, and the anti-friction filler contains molybdenum disulfide and layered nano zirconium phosphate which are treated by oxygen plasma. The high and low temperature resistance stability, oil resistance, wear resistance and tear strength of the fluorosilicone rubber are synergistically improved by regulating and controlling the multi-cross-linked network structure of the fluorosilicone rubber, strengthening the interface action of the rubber and the filler and optimizing the composite vulcanization system, meanwhile, structuralization of a rubber compound is prevented by optimizing the preparation process, and the requirement for adaptability to severe working conditions is met.

An adhesive for a tennis ball includes base rubber. The base rubber contains, as a main component thereof, liquid rubber having a number average molecular weight of not less than 10,000. The adhesive has a shear viscosity of not greater than 2,000 Pa·s. A tennis ball includes a hollow core made of a rubber material. The core includes two hemispherical half cores. The two half cores are adhered to each other by using the adhesive for a tennis ball.

An adhesive for a tennis ball of the present disclosure includes base rubber and a filler. The base rubber contains, as a main component thereof, liquid rubber having a number average molecular weight of not less than 10,000. The filler has an average nitrogen specific surface area of not less than 40 m2 / g. A tennis ball of the present disclosure includes a hollow core made of a rubber material. The core includes two hemispherical half cores. The two half cores are adhered to each other by using the adhesive for a tennis ball.

The invention relates to the technical field of fiber reinforced composite materials, in particular to a basalt fiber reinforced composite board in a dynamic heavy load environment and a preparation method. The basalt fiber reinforced composite board comprises an upper surface layer, an upper reinforcing layer, a core layer, a lower reinforcing layer and a lower surface layer. According to the invention, rigid nanoparticles and carboxyl-terminated nitrile rubber are introduced to construct a rigid-flexible composite toughening system, and nano aluminum oxide and silicon dioxide are taken as rigid particles and are uniformly dispersed in an epoxy cross-linked network, so that slippage and crack propagation of molecular chains can be effectively hindered, and the rigidity and damage resistance of a matrix are improved; meanwhile, the carboxyl-terminated nitrile rubber is used as reactive liquid rubber, after carboxyl of the carboxyl-terminated nitrile rubber reacts with epoxy groups, the carboxyl-terminated nitrile rubber is distributed in a matrix in a sea-island structure and can serve as stress concentration points, a large amount of crazing and shear bands can be induced, and a large amount of impact energy can be consumed; and the impact toughness is greatly improved while the high strength of the material is maintained.

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 discloses a rubber composite material, a steel-rubber composite lining plate and a preparation process thereof, and the rubber composite material comprises the following raw materials: natural rubber, butadiene styrene rubber, ethylene propylene diene monomer, dual-modified white carbon black, organic modified rectorite, reinforced fibers, a vulcanizing agent, a vulcanization accelerator, an anti-aging agent, a softening agent and an activating agent. The reinforced fibers are formed by compounding modified carbon fibers and aramid pulp. The steel-rubber composite lining plate comprises a steel plate base body, a rubber composite layer and an interface bonding layer, the rubber composite layer and the steel plate base body are vulcanized and formed through the interface bonding layer, a dovetail-shaped groove is formed in the surface of the steel plate and subjected to plasma treatment, and the interface bonding layer is a coupling agent and a liquid rubber prepolymer. The rubber composite material disclosed by the invention has excellent tensile strength, wear resistance and aging resistance; the steel-rubber composite lining plate is firm in interface bonding, effectively solves the problem of rubber layer stripping under high-temperature and impact working conditions, and effectively prolongs the service life when being applied to equipment such as a mill.

The invention relates to the technical field of tire rubber manufacturing, and discloses a tread rubber composition containing modified liquid rubber. According to the rubber composition, solution polymerized styrene-butadiene rubber and butadiene rubber are used as rubber substrates to construct a rubber system, and high-specific-surface-area white carbon black (BET is greater than or equal to 180m / g) is also added into the rubber system. The modified liquid rubber is added into the rubber system. The modified liquid rubber is prepared by melting and grafting unsaturated regenerated liquid rubber and maleic anhydride in the presence of a free radical initiator, and waste tire resources are effectively utilized. The modified liquid rubber can be used as a wetting agent, a coupling agent and a cross-linking active matter in the tread rubber composition at the same time, can effectively improve the dispersibility of the white carbon black, enhance the interface bonding force of the white carbon black and the rubber composition, weaken the Payne effect and enhance the wear resistance of the rubber composition, and does not affect the rolling resistance and wet skid resistance of the rubber composition. And the low-energy-consumption requirement of a new energy automobile is met.

The invention discloses a degradable liquid rubber plug and a method for plugging a shaft by using the same, and relates to the technical field of petroleum engineering well plugging. The invention provides a degradable liquid rubber plug and a shaft plugging method. The rubber plug is prepared from 10 wt%-20 wt% of polylactic acid particles, 3 wt%-6 wt% of sodium alginate, 1 wt%-3 wt% of nano silicon dioxide, 0.2 wt%-0.5 wt% of ammonium persulfate and the balance water. In a shaft environment at 90-130 DEG C, the initial viscosity of the rubber plug system is 80 + / -5 mPa.s, the rubber plug system is thickened to 5000 mPa.s within 20 min to form gel, and the pressure bearing capacity is larger than or equal to 20 MPa; and when meeting an acidic solution with the pH value of 1-3, the coating can be completely degraded within 60-120 minutes without solid phase residues. The temporary plugging device is suitable for temporary plugging of the well depth within 3000m, and drilling and milling operation is not needed for unplugging.

The present invention relates to a method for preparing a liquid rubber, and relates to a method for preparing a liquid rubber, including performing polymerization reaction of a conjugated diene-based monomer in the presence of an organic solvent and a catalyst composition (S10), wherein the catalyst composition includes a catalyst including a compound represented by the following Formula 1, and a liquid rubber prepared therefrom:wherein R, R1 to R4, and o, p, q and r are described herein.

The invention relates to the technical field of rail shock absorbers, in particular to a liquid rubber composite rail shock absorber which comprises an upper iron base plate and a lower iron base plate which are located between a steel rail and a sleeper, the upper iron base plate is arranged close to the steel rail, the lower iron base plate is arranged close to the sleeper, and a shock absorption base plate is arranged between the upper iron base plate and the lower iron base plate. A damping unit is arranged between the upper iron base plate and the vibration reduction base plate in a matched mode, or the damping unit is arranged in the vibration reduction base plate and comprises at least two damping liquid cavities which are vertically communicated with each other, damping liquid is arranged in the damping liquid cavities, and the damping liquid can vertically flow through the damping holes. The shock absorber in the scheme can realize full-band self-adaptive variable stiffness and damping characteristics, has excellent dynamic and static stiffness ratio and good bearing performance, and is reliable in sealing and long in fatigue life.

The invention relates to the technical field of track shock absorbers, in particular to a floating slab vibration isolator for a liquid rubber composite track, which comprises an upper seat plate, a lower seat plate and a middle partition plate, an upper rubber body is arranged between the upper seat plate and the middle partition plate, an upper hydraulic cavity is formed between the upper rubber body and the middle partition plate, and a lower rubber body is arranged between the lower seat plate and the middle partition plate. A lower hydraulic cavity is formed between the lower rubber body and the middle partition plate, damping liquid is arranged in the upper hydraulic cavity and the lower hydraulic cavity, the damping liquid in the upper hydraulic cavity and the damping liquid in the lower hydraulic cavity can flow mutually, a containing cavity used for containing the upper rubber body is formed in the upper base plate, and a ventilation cavity is formed between the top wall of the upper rubber body and the cavity top wall of the containing cavity. A plurality of ventilation holes located above the ventilation cavity are formed in the upper seat plate, and the lower rubber body comprises an upper supporting body, a lower cover body and a middle hydraulic body. According to the vibration isolator in the scheme, metal, rubber and a flow channel structure are optimally designed, so that the ratio of dynamic stiffness to static stiffness is adjustable, and liquid sealing is reliable.

To provide a tire capable of improving grip performance during cornering. [Solution] A tire having a tread portion and a belt layer, wherein the tread portion has at least one rubber layer, and a cap rubber layer that forms the tread surface of the tread portion is made of a rubber composition containing a rubber component, liquid rubber, and a terpene-based resin, and the belt layer has a steel cord consisting of 1 to 4 filaments, and the outer diameter D of the filaments is 0.45 mm or less, and when Y=A / P is defined as A (mass%) and P (mass%), Y is 0.50 or more and Y / D is 1.6 or more.

The invention relates to the technical field of petroleum and natural gas drilling engineering, in particular to a solid-free well killing fluid and a preparation method thereof, and the solid-free well killing fluid comprises the following raw materials in parts by weight: 80-100 parts of a base fluid, 25-35 parts of a composite additive, 8-12 parts of a soluble thickener, 6-10 parts of a liquid-phase anti-collapse agent and 3-5 parts of a lubricating aid. According to the high-density well killing fluid, a high-density system is constructed through the additive solution A of the composite additive, the specific gravity upper limit of a traditional salt weighting agent is broken through, the hydrotropy stabilizing effect of triethanolamine is combined, salting-out of high-concentration components is avoided, and the problem that specific gravity increase of traditional solid-free well killing fluid is limited is effectively solved; the system viscosity is increased, a liquid rubber plug can be formed, exchange dilution of the well killing fluid and residual sewage in a shaft is effectively blocked, performance degradation caused by dilution of the well killing fluid is avoided, and material waste caused by supplementing of the well killing fluid is also reduced.

The invention provides a preparation method of modified epoxy acrylate resin, which comprises the following steps: (1) mixing epoxy-terminated polyisoprene liquid rubber, unsaturated binary acid and a catalyst A for reaction A, and then adding polyol and a catalyst B for reaction B to obtain a modifier; and (2) mixing epoxy resin, unsaturated monocarboxylic acid, a catalyst A and a polymerization inhibitor for reaction C, then adding the modifier and the cross-linking agent in the step (1), and uniformly mixing to obtain the modified epoxy acrylate resin. The synthetic process is simple, the reaction endpoint is clear, the resin toughness is improved, the resin curing shrinkage rate is reduced, and the wettability with glass fibers is improved.

The utility model discloses a waterproof and breathable antibacterial fabric for vamp, which comprises a breathable surface layer and a breathable lining cloth. The inside of the breathable surface layer is coated with a liquid rubber coating. The breathable surface layer and the liquid rubber coating are punctured to form densely distributed conical micropores. The cross-sectional area of the micropores gradually decreases from the inside to the outside. The breathable surface layer and the breathable lining cloth are bonded by glue. The breathable lining cloth is coated with a quaternary ammonium polyethylene imine zinc oxide or cuprous oxide particle solution coating. The conical micropores are opened in the liquid rubber coating. When the inside gas expands and generates pressure on the inside opening of the conical micropores, the pressure formed at the opening of the conical micropores is transmitted to the front end to form strong air pressure, and the front end of the conical micropores is opened under pressure. Conversely, liquid cannot enter from the front end of the conical micropores, forming an efficient waterproof and breathable effect. The breathable lining cloth is coated with a quaternary ammonium polyethylene imine zinc oxide or cuprous oxide particle solution coating, which has good antibacterial effect and is beneficial to foot health.

A method for forming an article of footwear can include arranging a scaffold layer over a last having a shape of the article of footwear to form a scaffold assembly, where the scaffold layer comprises a textile with a mesh structure. The method can further include applying a liquid rubber to an upper portion and sole portion of the scaffold assembly to form one or more layers of rubber over the scaffold layer of the scaffold assembly, thereby forming a seamless article of footwear, and removing the formed article of footwear from the last.

An improved rubber composition and method to create the improved rubber composition is achieved by milling reduced graphene oxide (“RGO”) in liquid rubber to induce a reduction of bulk density of the reduced graphene oxide while maintaining dispersibility in rubber without using a solvent-based process resulting in an industrially scalable process and an improved rubber composition.

The present invention relates to the technical field of thermal insulation materials, specifically disclosing a polyurethane-based spray material and its application in composite thermal insulation layers with EPDM. The polyurethane-based spray material comprises components A and B. Component A, by mass, comprises 50%-70% isocyanate prepolymer, 10%-20% liquid rubber, 10%-20% ablation-resistant resin, 5%-10% fiber filler, and 1%-5% plasticizer. Component B comprises 45%-70% amino-terminated polyether, 1%-3% vulcanization crosslinking agent, 2%-6% vulcanization activation accelerator, 5%-15% chain extender, 10%-15% fiber filler, 10%-15% ablation-resistant resin, and 1%-5% plasticizer. By introducing the liquid rubber curing system into the spray insulation material, the bonding strength between the polyurethane-based spray insulation material and the EPDM insulation material is enhanced, enabling the production of a polyurethane / EPDM rubber composite thermal insulation layer. This provides a new solution for the production of engine spray insulation layers.

The present application claims a kind of deep-drawing and high-temperature-resistant block structure polyurethane adhesive for lithium ion battery packaging and its preparation method, the adhesive is prepared by uniformly mixing the following components by weight parts: 100 parts branched liquid rubber polyol-polyether-branched liquid rubber polyol polyurethane copolymer;3-5 parts high molecular weight ultraviolet light initiator;20-35 parts isocyanate end-capped high-temperature-resistant hydrolysis polyester polyol.Compared with the solvent-based polyurethane adhesive on the market at present, the adhesive of the present application does not contain organic solvent, has the advantages of non-toxic, safe to use, environment-friendly, etc., and its water resistance, yellowing resistance, deep-drawing resistance, high-temperature resistance and other properties are very outstanding after composite curing with the substrate, especially suitable for the special requirements of lithium ion battery aluminum-plastic composite packaging material.

Embodiments provide rubber sealants and rubber sealant formulations for use in high pressure hydrogen storage and transportation. Example sealant formulations include mixtures of ethylene propylene diene monomers (EPDMs) or EPDM-like materials, optional thermally conductive fillers, optional hydrogen barrier fillers, reinforcing fillers, liquid rubbers, antioxidants, optional abrasion resistance additives, and curing agents (e.g., cross-linking agents). Example formulations are capable of peroxide curing to produce thermosetting elastomers with excellent thermomechanical properties. Example sealants provide very low equilibrium hydrogen concentrations and reduced swelling.

The utility model discloses a high-strength pressure-resistant anti-corrosion waterproof ultrahigh-voltage power cable, which comprises a conductor, a semi-conductive wrapping tape is wrapped outside the conductor, a conductor shielding layer, an insulating layer and an insulating shielding layer are jointly extruded outside the semi-conductive wrapping tape, and a semi-conductive buffer water-blocking tape is wrapped outside the insulating shielding layer. A quick-setting liquid rubber waterproof layer is coated outside the semi-conductive buffer water-blocking tape, an anti-impact mixed-line woven reinforcing layer is arranged outside the quick-setting liquid rubber waterproof layer, a butyl rubber water-blocking pressure-reducing layer is arranged outside the anti-impact mixed-line woven reinforcing layer, a semi-conductive buffer water-blocking composite tape is arranged outside the butyl rubber water-blocking pressure-reducing layer, and the semi-conductive buffer water-blocking composite tape is arranged outside the semi-conductive buffer water-blocking composite tape. An FEP sheath layer is extruded outside the semi-conductive buffer water-blocking composite belt, and an acrylic acid anti-corrosion paint anti-corrosion layer is arranged outside the FEP sheath layer. According to the utility model, the mechanical performance, tensile performance, flexibility, waterproof performance, corrosion resistance and the like of the cable are improved, the mechanical strength and electrical characteristics of the cable are guaranteed, the service life is prolonged, and the market demand is better satisfied.

The present application relates to the technical field of adhesive, especially to the field of IPC C09J7, more particularly to a hot melt pressure sensitive adhesive for adhesive plaster and a preparation method thereof. The hot melt pressure sensitive adhesive component comprises 15-40 parts of main polymer, 45-60 parts of petroleum resin, 20-40 parts of filling oil, 5-20 parts of liquid rubber and 0.1-5 parts of auxiliary agent. The weight ratio of the main polymer and the liquid rubber is 3: (1-2), which can effectively improve the peeling strength (24N / in) and the bonding performance (22N / in) of the pressure sensitive adhesive 2 ); polyisobutylene comprises PB950 (Daling) and PB1300 (Daling), and the weight ratio of the PB950 (Daling) and the PB1300 (Daling) is 1: (2-4), which can balance the initial adhesion and the peeling strength, and can also reduce the residual glue rate between the skin, and is suitable for the adhesive plaster glue layer.

The invention relates to the technical field of semiconductor manufacturing, in particular to a packaging method for a semiconductor chip, and the method comprises the steps: fixing the chip at a corresponding position of a mounting plane; accurately mounting a mold matched with the chip on the mounting plane; liquid rubber is injected into the mold through a feeding port formed in the mold, and the video monitoring module is used for monitoring and controlling the flow; the expansion pressure in the air drying process of the heat-resistant rubber is detected through a plurality of pressure grooves in the mounting plane to determine the pressure rising speed and the pressure rising acceleration so as to determine the working mode of the heating equipment; removing the mounting plane after the rubber is completely cured; constructing an electrical connection point for realizing electrical connection of the chip through a metal processing technology; and connecting the semi-finished product with the constructed electric connection points with the substrate through a connection process. Through the mode, the packaging of the chip is realized, and the packaging yield is greatly improved.

The invention discloses a liquid rubber foaming product and a preparation method thereof, and belongs to the field of foaming rubber. The liquid rubber foaming product comprises the following raw materials in parts by mass: 100 parts of hydrophilic modified polybutadiene rubber, 3-5 parts of a plasticizer, 0.5-2 parts of a crosslinking aid, 5-8 parts of an acrylamide-acrylic acid copolymer, 3-8 parts of a foaming agent, 1-3 parts of a surfactant and 10-20 parts of filler, wherein a molecular chain of the hydrophilic modified polybutadiene rubber is grafted with a polyethylene glycol chain segment. Through hydrophilic modification, the polybutadiene rubber can directly take water as a dispersion medium, and the use of organic solvents such as benzene or gasoline is avoided in the preparation process of a foamed product, so that the effect of eliminating volatile organic compounds is achieved. The liquid-state rubber foaming agent has good mechanical properties and can cooperate with an acrylamide-acrylic acid copolymer to form a hydrogen bond-covalent bond double-crosslinking network, so that a vulcanization process and a foaming process can be better matched, and a liquid-state rubber foaming product with excellent performance is obtained.

This invention discloses a high-toughness, low-dielectric bismaleimide resin composition, a modified bismaleimide resin, its preparation method, and its applications. The bismaleimide resin composition comprises bismaleimide resin, an allyl compound, and a liquid rubber, wherein the liquid rubber contains end-capping groups capable of reacting with double bonds. This invention primarily addresses the problems of high dielectric constant, poor toughness, and poor interlaminar shear strength in existing bismaleimide resins. In this invention, the dielectric properties and toughness are improved by reacting the end-capping groups in the liquid rubber with the bismaleimide resin, while maintaining the mechanical properties and heat resistance essentially unchanged.

The invention provides a rubber composition which can extinguish fire in a short time in the event of a sharp temperature rise of a battery cell and the like, and which is excellent in adhesion, workability, and followability to a protected object. According to the invention, there is provided a rubber composition which contains 50 to 2,000 parts by mass of a metal hydroxide with respect to 100 parts by mass of a base polymer containing a liquid rubber and a solid elastomer, and the mass ratio of the liquid rubber to the solid elastomer is 95:5 to 50:50.

The invention discloses a workpiece machining method and system based on liquid rubber coating integrated forming, and belongs to the technical field of precision manufacturing. Comprising the following steps: constructing a chemical anchor layer with an active functional group; putting the pretreated material as an insert into a mold system, and injecting liquid silicone rubber; in the vulcanization process, the vulcanization reaction rate of the surface of the material is controlled to be lower than that of the central area of the cavity, so that the vulcanization conversion rate of the surface lags behind the central area, and active functional groups in the liquid silicone rubber are diffused to a chemical anchor point layer and covalent crosslinking occurs in the lagging period to form a cross-interface chemical bonding network; and finally cooling and demolding. The chemical anchor point layer is constructed on the surface of the material, and the interface hysteresis reaction in the vulcanization process is controlled, so that the covalent bonding of the liquid silicone rubber and the heterogeneous material on the molecular level is realized, the interface stress mismatch caused by physical assembly is eliminated, the interface bonding strength and the sealing reliability are remarkably improved, and the production process is simplified.

The invention provides a multi-polar binary structure regulator and a preparation method and application thereof, sulfonic acid groups contained in the multi-polar binary structure regulator can give full play to the polar effect of polyamido and epoxy groups in the anionic polymerization process of conjugated diene (1, 3-butadiene), on one hand, the electron donating ability is greatly improved, and on the other hand, the polar effect of the polyamido and epoxy groups can be fully played; on one hand, the reaction is promoted to move towards a pi-lithium allyl structure, on the other hand, the association degree of the initiator is improved, and under the synergistic effect of the two aspects, the content of the 1, 2-structure can be efficiently regulated and controlled, so that the high-vinyl low-gel-content polybutadiene liquid rubber can be prepared.

The thermally conductive polymer composition contains a liquid rubber having two or more hydroxyl groups in one molecule, a solvent having one or more hydroxyl groups in one molecule, a curing agent having, in one molecule, two or more functional groups which are reactive with both the hydroxyl groups of the liquid rubber and the hydroxyl groups of the solvent, and a filler having thermal conductivity.

The present invention relates to an acoustic damping material comprising at least one liquid rubber LR at 25°C; at least one component CP selected from the group consisting of butyl rubber BR, natural or synthetic polyisoprene PI, and polyisobutylene PIB; at least one solid particle filler FM; and at least one chemical or physical expander BA. The acoustic damping material is suitable for use in damping undesirable vibrations and noises in mechanical structures and components of manufactured articles, is lightweight, and exhibits good heat resistance at 210°C. The present invention also relates to the use of acoustic damping materials for damping vibrations and noises in transport vehicles and white goods, vibration and noise damping elements comprising an adhesive layer made of acoustic damping material, a method for applying vibration and noise damping elements to a noise-generating surface of a substrate, and a vibration damping system comprising a substrate and vibration and noise damping elements bonded to the noise-generating surface of the substrate.