84 results about "Synthetic rubber" patented technology

The invention relates to a hot melt adhesive film for bonding TPO and an epoxy plate and a preparation method thereof, the hot melt adhesive film comprises the following raw materials by mass: 10-30 parts of a polyolefin elastomer, 20-40 parts of synthetic rubber, 10-30 parts of modified synthetic rubber, 10-30 parts of tackifying resin, 10-30 parts of softening oil, and 1-5 parts of a cross-linking agent. The modified synthetic rubber is a mixture of maleic anhydride grafted SEBS rubber and epoxy modified SBS rubber; uniformly mixing the polyolefin elastomer, the synthetic rubber, the modified synthetic rubber, the tackifying resin and the softening oil, and granulating through a granulator; and uniformly mixing a cross-linking agent and the obtained particles, putting the mixture into a double-screw extruder, and carrying out melt extrusion to obtain the hot melt adhesive film. The hot melt adhesive film disclosed by the invention has high bonding strength on TPO and epoxy plates, and is simple in preparation process and convenient to use.

Provided is a rubber material for a tire having an excellent balance among wear resistance, fuel efficiency, and a wet grip property, a masterbatch and a rubber composition for a tire suitable for producing the same. A masterbatch contains: a rubber component which is at least one selected from the group consisting of a natural rubber and a synthetic rubber; a reinforcing filler that contains hydrophilic fumed silica; and a silane coupling agent, in which a content of the hydrophilic fumed silica is 13 parts by mass or more and 130 parts by mass or less, and a content of the silane coupling agent is 1 part by mass or more and 40 parts by mass or less, with respect to 100 parts by mass of the rubber component, and a mass ratio of the hydrophilic fumed silica in 100 mass % of the reinforcing filler is 50% or more.

The invention relates to a planar flexible bandage material having two opposing outer surfaces, wherein the first outer surface is formed by a synthetic rubber compatible with human skin and the second outer surface by a material which, in conjunction with a planar flexible fixing element, can create a hook and loop connection, as well as a system of bandage material that can be cut to size and a planar flexible fixing element material.

The application relates to the technical field of synthetic rubber, in particular to a nitrile rubber, a preparation method and application thereof, wherein the preparation method adopts at least potassium saponification soap and / or sodium saponification soap of disulfated rosin acid, C 10 -C 13 A composite emulsifier system composed of linear alkyl benzene sulfonic acid and naphthalene sulfonic acid formaldehyde condensate sodium salt and a low-temperature emulsion polymerization process, and the obtained nitrile rubber can be used in the field of oil-resistant sealing in a hydraulic oil operation environment.

The application discloses a kind of preparation method and system of butadiene-styrene latex using emulsion coagulant modification, belong to high polymer material and synthetic rubber technical field.The application includes: the solution containing lactone compound, linear polymer with upper critical solution temperature is mixed with butadiene-styrene latex, and homogeneous premix system is formed;Under preset temperature condition, the hydrolysis reaction of the lactone compound in the homogeneous premix system is carried out, and the pH value of system drops;When the pH value of the system drops to the isoelectric point of the linear polymer, the dissolution state of the linear polymer under the preset temperature changes from hydrophilic extended conformation to hydrophobic collapse conformation, so as to coalesce latex particles in the butadiene-styrene latex.The application realizes the separation of coagulation reaction and mixing process in time, effectively inhibits the problem of local concentration polarization caused by glue deposition and particle size distribution widening, and the obtained rubber particle is uniform in size and excellent in mechanical property, suitable for industrial production.

The invention discloses an environment-friendly rubber composition and a production method thereof, and belongs to the technical field of synthetic rubber. The rubber composition provided by the invention comprises the following components in parts by weight: 150200 parts of modified raw rubber; 50-60 parts of white carbon black; 110 to 130 parts of pottery clay; 31-43 parts of a softening agent; 5-8 parts of zinc oxide; 1-2 parts of stearic acid; 1-3 parts of polyethylene glycol; 2-5 parts of a silane coupling agent; the modified raw rubber is prepared by carrying out high-temperature reaction on raw rubber, a modifier and an organic solvent in the presence of inert gas. According to the environment-friendly rubber composition produced by the invention, the temperature resistance and the strength of the rubber can be enhanced by modifying the rubber, and the white carbon black and the argil are used for synergistic reinforcement, so that the strength and the cost are both considered, and the cost is controllable; a large amount of argil is used as a low-cost extender in the components, so that the economical efficiency is higher.

The present application relates to a kind of preparation method and application of recycled asphalt, waste modified asphalt waterproofing membrane is cut into cutting material by cutting machine, cutting material is put into special double screw extruder, and is converted into molten state recycled asphalt.The present application also utilizes layered silicate clay and biodegradable resin to modify recycled asphalt, for preparing recycled asphalt system modified asphalt or recycled asphalt containing waterproofing membrane, realizes the recycling of waste modified asphalt waterproofing membrane, especially for the recycling of waste modified asphalt waterproofing membrane containing polyester fiber, recycled asphalt system modified asphalt prepared by recycled asphalt can also reduce the dependence on petroleum chemical composition-artificial synthetic rubber required for traditional modified asphalt, and the preparation method of the present application also has the advantages of low energy consumption, little pollution, reduce carbon dioxide emissions and the like relative to existing recycling technology.

The invention discloses high-strength anti-aging styrene-butadiene rubber and a preparation method thereof, and belongs to the field of synthetic rubber modification. Porous reticular ZnO aggregated by 6.5 nm ZnO nanoparticles is synthesized by a hydrothermal method by using a composite surfactant of PVP K30 and polyvinyl alcohol 600 in a ratio of 1: 1, and the ZnO is not dried after synthesis so as to avoid aggregation; the preparation method comprises the following steps: carrying out surface modification with a silane coupling agent KH560, carrying out segmented temperature control mixing with styrene-butadiene rubber, carbon black N330 and other assistants, and carrying out pre-crosslinking and gradient heating vulcanization to obtain a finished product. A porous net structure allows rubber slurry to fully permeate, the contact area of the filler and a matrix is increased, and efficient reinforcement is realized by low mixing amount; znO nano-particles can convert ultraviolet light into visible light, and the aging resistance is enhanced by matching with the scattering effect of a porous structure; the coupling agent modifies and optimizes the interfacial compatibility, the problem that agglomeration and performance of a traditional filler are difficult to consider is solved, and the finished product has high strength and excellent aging resistance and meets the requirements of tires, sealing elements and other scenes.

This invention relates to the field of materials testing technology, specifically to a device for testing the fatigue tensile strength of synthetic rubber. The device includes a support assembly, an environmental conditioning assembly, a tensile testing assembly, and a discharge assembly. An environmental chamber is mounted on a base. A hoisting structure is used to hold the synthetic rubber to be tested. A sealed door is slidably mounted inside the environmental chamber, providing an entrance for the synthetic rubber. The environmental conditioning assembly is located inside the environmental chamber. A support rod is fixed inside the environmental chamber, and a sliding block is slidably mounted on the support rod. Two first clamping rods are rotatably mounted on the support rod, and two second clamping rods are rotatably mounted on the sliding block. A control component is used to control the first and second clamping rods to simultaneously clamp the synthetic rubber to be tested. A reciprocating movement component is used to control the reciprocating movement of the sliding block and the second clamping rods to drive the synthetic rubber to be tested for tensile testing. This device solves the problems of insufficient environmental simulation capability and unreliable clamping in existing technologies, achieving accurate fatigue tensile testing under multiple environmental conditions.

The invention belongs to the field of rubber oil application, and relates to a method for extracting and purifying a rubber oil component in a thermoplastic elastomer. The invention relates to thermoplastic elastomer particles, in particular to thermoplastic elastomer particles taking oil-filled styrene polymer synthetic rubber as a base material, a product and a method for extracting and purifying rubber oil from the particles and the product. The method comprises the following steps: (1) mixing thermoplastic elastomer particles or a product containing the thermoplastic elastomer particles with an extraction solvent, stirring, and filtering to obtain an extraction solution; (2) adding a precipitator into the extract, stirring, filtering and concentrating to obtain a concentrated solution; and (3) mixing the concentrated solution with methanol, extracting, separating liquid, concentrating and drying to obtain the rubber oil. The extraction solvent is a mixed solution of toluene and petroleum ether. The rubber oil obtained through the extraction and purification method is low in impurity content, operation is easy, and a specific extraction device is not needed.

This invention relates to the field of rare earth catalytic synthesis of rubber, and discloses a branched butadiene-isoprene copolymer and its preparation method. The preparation method includes the following steps: under a protective atmosphere, a composite branching agent is added to a butadiene and isoprene monomer solution, and then a rare earth catalyst is added to react fully to obtain the butadiene-isoprene copolymer; wherein the composite branching agent is prepared as follows: under a protective atmosphere, alkyl aluminum is added dropwise to a sulfur dichloride solution and reacted fully to obtain the desired composite branching agent; the present invention constructs a sulfur dichloride-alkyl aluminum composite branching agent, which is used in the branched butadiene-isoprene copolymerization reaction to obtain a branched copolymer with high cis structure content, excellent mechanical properties and processing properties.

The invention discloses a pressure-sensitive adhesive tape for a CMP process. The pressure-sensitive adhesive tape comprises a first release film layer, a first pressure-sensitive adhesive layer, a base material layer, a second pressure-sensitive adhesive layer and a second release layer from top to bottom in sequence, the first pressure-sensitive adhesive layer is obtained by coating a first adhesive pre-coating material and then curing; the first adhesive pre-coating material is prepared from the following raw materials in parts by weight: 100 parts of a rubber pressure-sensitive adhesive prepolymer, 5 to 20 parts of tackifying resin, 0.25 to 1.5 parts of a curing agent, 0.5 to 2 parts of a photoinitiator and 0.5 to 2 parts of a cross-linking agent; the rubber pressure-sensitive adhesive prepolymer is a copolymer obtained by carrying out modified polymerization on synthetic rubber by one or more acrylate monomers. According to the pressure-sensitive adhesive tape for CMP, the photoinitiator and the cross-linking agent are introduced into the first adhesive layer, cohesion of the adhesive layer is effectively improved through dual curing of thermosetting and UV curing, and in the CMP process, adhesive is not prone to being left on the surface of a machine base.

This invention belongs to the field of synthetic rubber preparation technology, specifically relating to low Mooney viscosity atactic 1,2-polybutadiene, its preparation method, and its applications. The preparation method of the low Mooney viscosity atactic 1,2-polybutadiene includes the following steps: under a protective gas atmosphere, adding a phosphate ester compound to a molybdenum compound, aging and cooling, then adding toluene to obtain a main catalyst; placing a trialkylaluminum alkane solution in an ice-water bath, adding aryloxy ligands dropwise to the container, and reacting in an ice-water bath to obtain a co-catalyst; dissolving butadiene in an alkane solution, adding the co-catalyst, main catalyst, activator, and molecular weight regulator respectively, and carrying out a polymerization reaction to obtain low Mooney viscosity atactic 1,2-polybutadiene. This invention provides a method for preparing low Mooney viscosity atactic 1,2-polybutadiene with high conversion rate; the obtained 1,2-PB has a low Mooney value and a high 1,2-structure content; it can be applied to rubber additives and damping materials to improve their performance.

The application relates to a raw rubber composition and an anti-aging agent composition, the raw rubber composition comprising: raw rubber, and alkylated diphenylamine of the application. The alkylated diphenylamine contained in the rubber composition of the application comprises a high content of C9 disubstituted diphenylamine, a low proportion of small molecular weight components, good compatibility with rubber, is not easy to precipitate, has better long-term protection effect, even if used alone, has application effect in protecting production and processing of synthetic rubber and long-term storage, and has better effect when used in combination with a phenolic antioxidant such as an antioxidant 1520 analogue (antioxidant 1530).

The utility model discloses a high-temperature-resistant insulating rubber hose which comprises a rubber hose main body, an anti-rolling structure is arranged on the outer side of the rubber hose main body, and the anti-rolling structure comprises a lantern ring, a supporting plate and a bottom plate. According to the utility model, the inner rubber layer made of the HNBR hydrogenated nitrile synthetic rubber material is arranged on the inner side of the rubber hose main body, and the HNBR hydrogenated nitrile synthetic rubber material has oil resistance, water resistance, high temperature resistance, low temperature resistance, low compression deformation and high sealing performance, so that the rubber hose can be normally used in a temperature range of-45 DEG C to + 130 DEG C; the anti-rolling structure is mounted on the outer side of the rubber hose main body, and the detachable anti-rolling structure is mounted on the part, easily rolled by a vehicle, of the rubber hose main body, so that the rubber hose main body is supported and protected, and the pressure generated when the vehicle passes through is shared; and the situation that material circulation is affected due to the fact that the rubber hose is subjected to large pressure in the material conveying process is avoided, or the situation that the rubber hose is damaged after being rolled for a long time is avoided.

A heel-cup structure for climbing shoes having increased edge-contact properties and friction on uneven surface where the heel area has a protrusion around the outer sole area under the heel and rimmed indentation between the heel counter and the outer sole. The heel-cup structure with protrusion of the outer sole made of soft, polymeric, synthetic rubber material provides a device to latch onto a thin edge of the rock surface in contact, to effectuate edging and heel-hooking.

The utility model discloses a continuous kneading device for synthetic rubber production, which comprises a kneading machine body and a feeding cylinder, the feeding cylinder is fixedly connected to the top of the kneading machine body and is communicated with the kneading machine body, and a detachable vibration filtering assembly is mounted in the feeding cylinder. Sundry discharging ports are formed in the positions, corresponding to the vibration filtering assemblies, of the left side and the right side of the inner wall of the feeding cylinder, shielding covers are slidably connected to the positions, corresponding to the sundry discharging ports, of the outer side of the feeding cylinder in the vertical direction, and fixing frames are installed on the left side and the right side of the feeding cylinder. The continuous kneading device for synthetic rubber production is reasonable in structural design and convenient to use, the vibration type filter screen design is adopted, sundries can be prevented from being clamped into filter holes in the feeding process, therefore, the cleaning frequency of the filter screen can be reduced, continuous discharging of normal materials can be guaranteed, meanwhile, the filter screen is designed to be quick to detach, and the service life of the filter screen is prolonged. And when the device is blocked or damaged, the device can be quickly detached and cleaned, and has higher practicability.

The invention discloses a polyethylene-propylene-3-methyl-1-butene polymer as well as a preparation method and application thereof, and belongs to the technical field of synthetic rubber. The polyethylene-propylene-3-methyl-1-butene polymer has the following molecular structure, wherein n and m are both polymerization degrees; y is branched nodes, and the number of the branched nodes is 5-6; n / (m + n) is equal to 0.38-0.42, the hydrogenation degree is 99.5-99.8%, and the viscosity index modifier is easy to dissolve in mineral oil, high in thickening capacity, low in shear shift index (SSI) and excellent in viscosity-temperature characteristic, has a good modification effect on lubricating oil and is particularly suitable for being used as a base oil viscosity index modifier.

The application discloses a kind of glue material and the electrochemical device (30) comprising it, glue material includes glue film (10), glue film (10) includes bonding layer (101) and first functional layer (102), wherein, first functional layer (102) includes synthetic rubber and additive, and additive includes wax or high molecular surfactant.Glue material is adjusted by being provided with first functional layer (102) with synthetic rubber and additive, and the adhesion of the surface of both sides of its glue film (10) can be adjusted by heat treatment and / or pressure treatment, and the penetration and / or migration between layers in glue film (10) is avoided, to improve the safety performance of electrochemical device (30).

The utility model relates to the technical field of golf balls, and discloses a golf ball with a multi-layer composite structure, which solves the problem that the golf ball is single in structure in the use process, and comprises a ball body, the ball body comprises a central main body layer, a middle functional layer is fixedly wrapped on the outer side of the central main body layer, and an outer layer is fixedly wrapped on the outer side of the middle functional layer. Wherein the central main body layer comprises an inner core, the outer side of the inner core is fixedly wrapped with a hard rubber layer, the outer side of the hard rubber layer is fixedly wrapped with a thermoplastic middle layer, the outer side of the thermoplastic middle layer is fixedly wrapped with a soft rubber sleeve layer, the outer side of the soft rubber sleeve layer is fixedly wrapped with a synthetic rubber layer, and the inner core is made of a metal material. The thermoplastic middle layer is made of a TPU (Thermoplastic Polyurethane) 92A polyurethane material; according to the golf ball, the effect of structure diversification is achieved in the using process of the golf ball, the performance of the golf ball can be further improved, better experience feeling can be brought to a user, and therefore better practicability can be achieved conveniently.

The utility model discloses a synthetic rubber briquetting forming machine which comprises a machine body frame, a feeding assembly and a cleaning assembly, the feeding assembly is installed on the upper portion of the left end of the machine body frame, a forming cavity is formed in the portion, on the right of the feeding assembly, of the machine body frame, and a pressure assembly is installed above the forming cavity. An ejection assembly is installed below the forming cavity and comprises an ejection plate, an ejection oil cylinder is installed in the middle of the bottom end of the ejection plate, the bottom end of the ejection oil cylinder is installed in an equipment cavity below the forming cavity, a supporting base is installed on the inner wall of the forming cavity, and a pushing assembly is installed on the rear wall of the machine body frame. A cleaning assembly is mounted at the right end of the machine body frame; the problems that in the prior art, although a forming machine has high practical value in the using process, in the working process, after a finished product on a top plate is taken down, some chippings and particles are likely to remain on the outer wall of the top plate, and the product quality is affected are solved.

The present application relates to the technical field of synthetic rubber, in particular to a carboxyl nitrile rubber or carboxyl hydrogenated nitrile rubber and a preparation method thereof, which comprises: hydrolysis reaction of nitrile rubber or hydrogenated nitrile rubber in the presence of a solvent and an acidic or alkaline aqueous solution. Compared with the emulsion polymerization method, the method has the advantages of simple operation, simple process, strong designability of carboxyl content, etc. The product prepared by the preparation method has the advantages of good oil resistance, consistency and high stability.

Provided is a rubber material for a tire having an excellent balance among wear resistance, fuel efficiency, and a wet grip property, a masterbatch and a rubber composition for a tire suitable for producing the same. A rubber material for a tire contains: 5 parts by mass or more and 90 parts by mass or less of hydrophilic fumed silica and 1.5 parts by mass or more and 30 parts by mass or less of a silane coupling agent, with respect to 100 parts by mass of a total rubber component containing at least one selected from the group consisting of a natural rubber and a synthetic rubber, in which a stress at 100% elongation (M100, MPa), a tensile strength at break (TB, MPa), and a tensile elongation at break (EB, %) of the rubber material for a tire satisfy the following relationship: 4,000≤TB×EB / M100≤13,000.

RUBBER PROCESS OIL The invention provides a rubber process oil comprising a hydrocarbon fluid comprising paraffinic hydrocarbons, naphthenic hydrocarbons, or a mixture thereof, wherein said hydrocarbon fluid has a kinematic viscosity at 100˚C of less than 10 cSt, and wherein said hydrocarbon fluid comprises a re-refined or recycled oil. The invention also provides a process for the production of a rubber composition said process comprising the steps of combining a natural or synthetic rubber with a rubber process oil comprising a hydrocarbon fluid comprising paraffinic hydrocarbons, naphthenic hydrocarbons, or a mixture thereof, wherein said hydrocarbon fluid has a kinematic viscosity at 100˚C of less than 10 cSt, and wherein said hydrocarbon fluid comprises a re-refined or recycled oil.

The invention relates to a composition for a bicycle inner tube, containing - a synthetic rubber and - recovered soot, wherein the recovered carbon black has a proportion of ≤ 50 wt.%, based on the total weight of fillers contained in the composition. The invention further relates to a bicycle inner tube having the above composition, and to the use of the above composition for a bicycle inner tube.

This invention provides a method for treating rubber waste that can gasify not only the rubber components but also the carbon black, even in rubber waste containing carbon black, thereby improving the gas generation rate of useful generated gases. [Solution] The method for processing rubber waste includes the steps of: preparing a material to be processed derived from rubber waste containing either natural rubber or synthetic rubber, or both, and carbon black; a thermal decomposition step in which the material to be processed is thermally decomposed at a temperature of 850°C to 1300°C in a reducing atmosphere in which O2 gas is 5% by volume or less and H2O gas is 0.1% by volume or more and 20% by volume or less; and a recovery step in which the generated gas mainly composed of H2 gas, CO gas, and CO2 gas produced by the thermal decomposition step is recovered.

A system, composition, and method are disclosed for producing superhydrophobic and antifouling polymer materials. The invention incorporates antifouling agents such as capsaicin, medetomidine, tralopyril, or zinc pyrithione together with hydrophobic additives such as polydimethylsiloxane, polytetrafluoroethylene, fluoropolymers, or surface-modified nanoparticles into natural or synthetic rubber and thermoplastic matrices. In one approach, pre-formulated antifouling compositions are added as solid components during compounding, and in another, the polymer itself serves as a carrier medium for direct incorporation of the active ingredients. The compounded materials exhibit controlled release of antifouling agents, low surface energy, and superhydrophobic behavior that reduces drag and resists attachment of marine and freshwater organisms. A manufacturing system may include compounding, monitoring, and forming units, with optional plasma or laser treatment to enhance nanoscale roughness. The invention enables durable, environmentally responsible materials for marine, industrial, and consumer applications requiring long-term fouling resistance.

The present application belongs to the technical field of microcapsule encapsulation, and particularly relates to a thermal expansion microsphere foaming agent and a preparation method thereof. The method comprises the following steps: 1) uniformly mixing synthetic rubber and an anionic surfactant to prepare a continuous phase solution; 2) using unsaturated nitrile compounds and ester compounds as base materials to prepare a dispersed phase solution; 3) uniformly mixing the continuous phase solution and the dispersed phase solution in a certain proportion to perform a thermal expansion microsphere polymerization reaction and prepare a base material; 4) performing gradient curing on the base material to prepare a precursor; and 5) performing functional modification on the precursor to prepare the thermal expansion microsphere foaming agent. The present application ensures that the thermal expansion microspheres have good stability and dispersibility through a double crosslinking network and three-phase surface energy control, and simultaneously optimizes the foaming ratio-foaming strength flatness of the thermal expansion microsphere foaming agent, so as to ensure that the foamed spheres have good mechanical stability and thermal stability.

The present invention relates to the field of high polymer material processing, and discloses a rubber in-mold foaming lightweight sports shoe material and a preparation method thereof, the rubber in-mold foaming lightweight sports shoe material comprises the following raw material components by weight: 60-100 parts of a rubber base material, the rubber base material comprises butadiene rubber, styrene butadiene rubber and at least one special synthetic rubber; 30 to 40 parts of a reinforcing filler; 3-8 parts of a vulcanization system comprising sulfur and a sulfenamide accelerator; 5-12 parts of a composite foaming system which comprises an organic foaming agent, a foaming promoter and a nucleating agent; and 3-8 parts of an activation system comprising zinc oxide and fatty acid. A traditional multi-section type processing flow is replaced by an in-mold one-step foaming forming process, and plastifying, foaming, vulcanizing and shaping of a rubber compound are integrated and completed in a single mold procedure through sectional temperature control, pressure coupling regulation and a foaming-vulcanizing rate matching technology, so that the production period is greatly shortened, the energy consumption and equipment occupation are reduced, and the production cost is reduced. Meanwhile, a uniform and fine closed pore structure is formed by utilizing accurate foaming window control and nucleating agent induction effect.

The invention relates to a green single-sided adhesive tape for a lithium battery and a preparation method of the green single-sided adhesive tape, and belongs to the technical field of adhesives and lithium battery materials. The green single-sided adhesive tape for the lithium battery sequentially comprises a hot-melt pressure-sensitive adhesive layer, a PET (Polyethylene Terephthalate) base material layer and a release coating from top to bottom, comprising the following components in parts by weight: 15-30 parts of a hydrogenated styrene block copolymer, 5-10 parts of a maleic anhydride modified polyolefin copolymer, 20-40 parts of hydrogenated rosin resin, 10-20 parts of hydrogenated petroleum resin with a high softening point, 0.1-1 part of an antioxidant and 0.1-1.0 part of a curing agent. According to the invention, high-strength bonding is realized by adopting the electrolyte-resistant synthetic rubber type glue, and the long-term stability of the lithium battery adhesive tape is remarkably improved through cooperation of the green PET base material and the pigment-free pressure-sensitive adhesive layer.