97 results about "Liquid rubber" patented technology

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 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 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.

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 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.

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 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 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.

The utility model relates to the technical field of biomass material and rubber composite production, and discloses a biomass short fiber and liquid rubber pretreatment device which comprises a mixing tank and a wind power feeding machine, and a feeding port A matched with liquid rubber feeding and a feeding port B matched with biomass short fiber feeding are formed in the mixing tank; the wind power feeding machine is used for feeding biomass short fibers to the feeding opening A by adopting wind power blowing, so that the biomass short fibers are dispersed and fed into the mixing tank; the wind power feeding machine comprises a feeding hopper, a spiral conveyor, a fan and a feeding pipe, a discharging port A in the bottom of the feeding hopper is communicated with a feeding port A in the spiral conveyor, a discharging port B of the spiral conveyor is communicated with a feeding port B of the feeding pipe, an air inlet in the feeding pipe is communicated with an air outlet of the fan, the feeding hopper is communicated with the feeding port B, and the feeding port A is communicated with the feeding port B; due to the effective dispersion effect of the wind power feeding machine, the agglomeration phenomenon of biomass short fibers is avoided, loss in the conveying process is reduced, and the utilization rate of raw materials is increased.

The present application belongs to the technical field of rubbers, and particularly relates to a rubber composition and a preparation method therefor, and an OTR engineering tire using same. The rubber composition disclosed in the present application comprises (in parts by mass) 100 parts of a diene rubber, 0-1.5 parts of a tetrazine compound, 0.2-1.5 parts of a pyrazolone compound, 0-30 parts of a liquid rubber, 20-100 parts of a reinforcing filler, 0-5 parts of a silane coupling agent, 2-10 parts of a vulcanization activator, and a vulcanization accelerator, a vulcanizing agent, an antioxidant, a resin and a plasticizer. Moreover, the ratios of the tetrazine compound and the liquid rubber are not zero at the same time. The present application can significantly reduce the heat generated by the OTR engineering tire, and can also improve the damage resistance of the tire.

The invention relates to a pouring type high-temperature-oil-resistant double-component polyurethane sealant as well as a preparation method and application thereof. The pouring type high-temperature-oil-resistant double-component polyurethane sealant is prepared from a component A and a component B, the component A comprises the following components in percentage by mass: 0-30% of polyether polyol A, 40-60% of a cross-linking agent and 20-40% of liquid rubber A and / or liquid rubber modified polyol, wherein the mass percentage of the component A is 100%; the component B comprises the following components in percentage by mass: 65-90% of isocyanate A, 2-10% of a silane coupling agent and 5-25% of a plasticizer, wherein the mass percentage of the component B is 100%; the mass ratio of the component A to the component B is (1-2): 1. The liquid rubber and / or the liquid rubber modified polyol are / is introduced into a polyurethane sealant system, so that the high-temperature oil resistance of the sealant is improved, and the performance of the sealant can still be kept stable after the sealant is soaked, corroded and aged in silicone oil, lubricating oil and castor oil at high temperature.

The invention relates to the technical field of epoxy resin materials, and discloses a nano rubber epoxy resin flexibilizer double-emulsion stirring preparation method, which comprises: mixing an epoxy resin matrix, a liquid rubber component, a surfactant and a diluent to form a primary double-emulsion; the method comprises the following steps: acquiring a viscosity induction torque representing dispersion phase droplet breaking resistance in a stirring process, monitoring a torque change rate to judge a dispersion equilibrium state, triggering a rotating speed step factor to increase a stirring rotating speed according to the torque change rate, and realizing forced regulation and control on dispersion phase particle size distribution by increasing shear stress; overlapping an oscillation shear field and cooperating with reverse stirring to induce an interface anchoring component to be spread and implanted at a phase interface to construct a chemical anchoring layer. According to the method, viscosity drift caused by temperature rise is compensated through torque feedback, the shear energy level is maintained to be constant, and the consistency of nanophase particle size distribution is ensured; a chemical anchoring structure is formed by utilizing an oscillation shearing induced phase interface, an infiltration dead zone is eliminated, the two-phase bonding strength is enhanced, and the service reliability of the material is improved.

The invention relates to colorless transparent liquid rubber and a preparation method thereof, and the preparation method comprises the following steps: adding an olefin monomer, a structure regulator and a non-polar organic solvent into a reaction container, uniformly stirring, adding an initiator, and carrying out an anionic polymerization reaction; the molar ratio of the structure regulator to the initiator is (0.5-10): 1; after the reaction is finished, monocarboxylic acid with the carbon atom number of 4-8 is added as a terminator, and the molar ratio of the monocarboxylic acid to the initiator is (1.1-1.2): 1; adding an antioxidant; and removing the solvent in the reaction system to obtain colorless and transparent liquid rubber. Compared with the prior art, the method has the advantages that after the anionic polymerization initiated by the lithium salt is finished, the monocarboxylic acid is directly added into the polymerization reaction solution for termination, a colorless and transparent liquid rubber product is successfully prepared, and after the liquid rubber is aged at a certain temperature, the appearance of the liquid rubber is still clear and transparent.

The invention belongs to the technical field of high polymer materials, and particularly relates to a weather-resistant rubber material for a pet trolley and a preparation method of the weather-resistant rubber material. The invention aims to solve the technical problems of poor compatibility and insufficient long-term effect of a current multifunctional additive component and a matrix material. A four-layer co-extrusion structure is adopted and comprises a base layer, a functional layer, a buffer layer and a surface layer, the base layer takes high-density polyethylene as a main body and contains an elastic toughening component, the functional layer contains a thermoplastic elastomer matrix and a nano silicon dioxide filler pretreated by a silane coupling agent, and the buffer layer adopts an aliphatic thermoplastic polyurethane elastomer; and the surface layer takes a thermoplastic elastomer as a matrix and is added with liquid rubber coated multifunctional additive composite powder.

The present application belongs to the technical field of rubber, and particularly relates to a rubber composition and a preparation method therefor, and a truck tire using same. The rubber composition comprises, in parts by mass: 100 parts of diene rubber, 0.2-1.5 parts of a hydrazide compound, 0.2-1.5 parts of a pyrazolone compound, 0-30 parts of liquid rubber, 20-120 parts of a reinforcing filler, 0-10 parts of a silane coupling agent, 2-10 parts of a vulcanization activator, a vulcanization accelerator, a vulcanizing agent, an antioxidant, a resin and a plasticizer. The present application can significantly reduce the heat generation of the tire while improving its cut resistance and tear resistance, thereby enhancing the damage resistance of the truck tire.

This invention relates to a linerless liquid hydrogen container carbon fiber composite material and its preparation method. The preparation method includes the following steps: reacting a hydroxyl-terminated polymer with a sulfonyl chloride group to generate a first solution; the hydroxyl-terminated polymer includes a hydroxyl-terminated hyperbranched polymer, a hydroxyl-terminated polyether polyol, or a hydroxyl-terminated liquid rubber; the sulfonyl chloride group organic compound includes dodecylbenzenesulfonyl chloride or ethylsulfonyl chloride; reacting the first solution with 1-methylimidazole, washing the product with a solvent, and vacuum drying to evaporate the solvent to obtain an ionic liquid; mixing the ionic liquid uniformly with graphene or hexagonal boron nitride nanosheets, adding a curing agent, mixing uniformly, then adding epoxy resin, mixing uniformly, and repeatedly vacuuming to obtain a modified epoxy resin mixed solution; and using the modified epoxy resin mixed solution to wind and mold carbon fiber composite material parts. This invention enhances the low-temperature toughness and gas barrier properties of carbon fiber composite materials.

This invention belongs to the field of polymer materials technology, specifically relating to a weather-resistant rubber material for pet strollers and its preparation method. Addressing the current technical problems of poor compatibility and insufficient long-term effectiveness of multifunctional additive components with the matrix material, this invention employs a four-layer co-extrusion structure, including a base layer, a functional layer, a buffer layer, and a surface layer. The base layer is primarily composed of high-density polyethylene and contains elastic toughening components; the functional layer contains a thermoplastic elastomer matrix and nano-silica filler pretreated with a silane coupling agent; the buffer layer uses an aliphatic thermoplastic polyurethane elastomer; and the surface layer uses a thermoplastic elastomer matrix with added liquid rubber-coated multifunctional additive composite powder.

The invention discloses liquid polybutadiene rubber with wide molecular weight distribution and a preparation method of the liquid polybutadiene rubber, which comprises the following steps: accurately controlling the molecular weight distribution and vinyl content of a polymerization product by combining an anionic polymerization method with a multifunctional regulator, and synthesizing liquid polybutadiene rubber with the number-average molecular weight of 500-20000, the molecular weight distribution of 2.0-10.0 and the molecular weight distribution of 2.0-10.0. The content of vinyl in the liquid polybutadiene rubber is 40%-95%. The prepared wide-molecular-weight-distribution liquid rubber not only keeps the original excellent fluidity and processing convenience of the liquid rubber, but also remarkably improves the strength and elasticity of a liquid rubber product, and meanwhile provides a wider vulcanization speed adjusting range and a better filler mixing effect.

The present application relates to the technical field of organic photocuring, and discloses a photosensitive resin composition, a preparation method thereof, a photosensitive resin material prepared from the photosensitive resin composition and application of the photosensitive resin material. The composition comprises, in parts by weight, 10-30 parts of polyester modified epoxy acrylate, 15-30 parts of aliphatic polyurethane acrylate, 30-36 parts of active diluent, 2-5 parts of photoinitiator and 5-25 parts of mercapto-terminated polysulfide liquid rubber. The C-S bond and rubber phase contained in the mercapto-terminated polysulfide liquid rubber can not only reduce the oxygen inhibition effect and avoid the odor problem caused by small molecule mercaptan, but more importantly, can significantly improve the impact strength and gel rate of the photosensitive resin material prepared from the photosensitive resin composition, and reduce the volume shrinkage of photocuring, so that the comprehensive performance of the photosensitive resin composition is improved.

The invention provides a halogenated isoolefin rubber composition and a preparation method thereof. The halogenated isoolefin rubber composition comprises the following components in parts by weight: 100 parts of halogenated isoolefin rubber; 6 to 20 parts of liquid butyl rubber with a number average molecular weight of 1000 to 100000 g / mol; 0.1 to 5 parts of graphene nanosheets; 2 to 10 parts of organic modified montmorillonite; wherein the liquid butyl rubber exists in a continuous phase matrix of the halogenated isoolefin rubber in the form of a dispersed phase, and the average particle size of the dispersed phase is less than 500nm. According to the invention, the technical problems of poor air tightness and mechanical properties of products caused by non-uniform dispersion of liquid rubber as a plasticizer in a halogenated isoolefin rubber matrix in the prior art are solved.

The invention relates to the technical field of tire rubber manufacturing, and discloses a cracked carbon black-bio-based liquid rubber dual-network cross-linked sidewall rubber composition and a preparation method thereof. According to the invention, the bio-based liquid rubber is adopted to adjust delta SP (solubility difference between the filler and raw rubber) and a sulfur / peroxide (DCP) composite crosslinking technology is adopted, so that the content of the bio-based filler in the sidewall rubber material is increased as much as possible, and under the condition that the bio-based filler is added, the Pearn effect of the rubber material is effectively reduced, and the rolling resistance of the rubber material is reduced.

The invention provides siloxane-terminated liquid rubber and a preparation method thereof, and the preparation method comprises the following steps: adding a hydroxyl protection reagent, a nitrogen-containing organic compound and halogenated alcohol into a non-polar solvent, and removing a nitrogen-containing organic compound-hydrogen chloride complex to obtain a protection group initiator intermediate solution; alkali metal is added into the protecting group initiator intermediate solution for reaction, and a protecting group initiator is obtained; initiating butadiene polymerization by using a protecting group initiator, and then carrying out an end capping reaction to obtain a polymerized glue solution; the preparation method comprises the following steps: adding deionized water and acid into a polymerized glue solution to obtain a dihydroxy-terminated polymerized glue solution, then adding a silane end-capping reagent, a nitrogen-containing organic compound and deionized water, and removing a nitrogen-containing organic compound-hydrogen chloride complex to obtain siloxane-terminated liquid rubber, so that the mixing uniformity of white carbon black and a rubber sizing material is remarkably improved; and the rolling resistance and hysteresis loss of the tire are effectively reduced, so that the tire has excellent dynamic performance.

This application discloses a method for degrading polydiene-based crosslinked rubber. The method uses a catalyst, a co-catalyst, an oxidant, and an organic solvent to degrade the polydiene-based crosslinked rubber, yielding a functionalized liquid rubber. This degradation reaction enables one-step degradation of polydiene-based crosslinked rubber under mild conditions, is simple to operate, requires no complex equipment, and allows for precise control of the molecular weight and end-group functional groups of the degradation products. Under simple conditions, a range of widely used polydiene-based crosslinked rubbers can be converted into functionalized liquid rubber, laying the foundation for the efficient and selective recycling of crosslinked rubber product waste (tires, belts, hoses, rubber shoes, latex products, etc.) in real-world environments.