316 results about "Synthetic rubber" patented technology

The invention belongs to the technical field of sealing materials and synthetic rubber, and particularly discloses a high and low temperature resistant, wear resistant and fatigue resistant ethylene propylene rubber material and a preparation method thereof. According to the invention, the ethylene propylene rubber with low ethylene content and high Mooney viscosity is used as a base material, and the flexing resistance of a rubber system is improved by adding the small-particle-size high-wear-resistance carbon black, the high-structure-degree fast extruding carbon black, the compounded semi-reinforcing carbon black and the white carbon black as reinforcing filling materials. The low temperature resistance of the rubber is improved by adding a composite plasticizer (paraffin oil is compounded with a small amount of fatty acid ester plasticizer). Meanwhile, peroxide is selected, and a small amount of sulfur is used as a vulcanization system, so that the flexing resistance can be considered while the high-temperature resistance is ensured. And finally, the anti-aging agent is supplemented to enhance the protection effect on aging caused by heat and oxygen, so that the heat resistance and fatigue resistance of the rubber material are integrally improved. The rubber material provided by the invention can be prepared by adopting a universal mixing process in the rubber industry, and is simple in process and convenient to operate.

The invention belongs to the technical field of sealing materials, and particularly relates to a rubber composite sealing material and a liquid phase preparation method and application thereof. According to the liquid-phase preparation method of the rubber composite sealing material, provided by the invention, based on deep understanding of a liquid-phase synthesis process of first liquid-phase pre-dispersion and then condensation, a modified carbon black dispersion liquid, a modification auxiliary agent and a modified synthetic rubber latex dispersion liquid are prepared, so that carbon black and the auxiliary agent can be promoted to be uniformly and stably dispersed in a synthetic rubber system; the dispersion uniformity of the carbon black and the auxiliary agent is improved, so that the vulcanized rubber composite sealing material is not easy to have insufficient or excessive local crosslinking or structural defects, thereby improving the mechanical property, air tightness and cold resistance of the rubber composite sealing material, and being a high-performance rubber composite material; the technical problem that a high-performance rubber material is difficult to prepare by an existing preparation method is solved.

The present invention discloses a portable snack placemat designed to be easily foldable and easy to stow. The portable snack placemat comprises a placemat portion with a lip, molded snack containers with matching lids, and a locking device. The placemat portion further comprises two indentions which allow the snack placemat to fold upon itself while maintaining a narrow base so that the snack placemat can stand upright when in the folded position. The snack placemat further comprises an attachment piece. When the placemat portion is folded along the two indentions, the attachment piece creates a locking mechanism. The snack placemat is now in the folded position and can easily fit in any diaper bag, cooler, or backpack due to its compact and flat size. The portable snack placemat may be made of silicone or another similar synthetic rubber or synthetic plastic polymer with analogous qualities.

The utility model discloses a high-elasticity synthetic rubber and plastic plate with excellent noise reduction, and relates to the technical field of synthetic rubber and plastic plates. A first noise reduction layer is arranged on the left side face of the base layer, a second noise reduction layer is arranged on the right side face of the base layer, the base layer is formed by mixing rubber, silicon dioxide and zinc oxide, the first noise reduction layer and the second noise reduction layer are both made of polyurethane, and a first heat preservation layer is fixed to the left side face of the first noise reduction layer. A second heat preservation layer is fixed to the right side face of the second noise reduction layer, and the second heat preservation layer and the first heat preservation layer are both made of butadiene rubber. According to the high-elasticity synthetic rubber and plastic plate with the excellent noise reduction effect, the noise can be effectively isolated by adopting double-layer noise reduction, so that the noise reduction effect of the synthetic rubber and plastic plate is improved, the arranged heat preservation layer can achieve the low-temperature-resistant effect, and the high-elasticity synthetic rubber and plastic plate has the good noise reduction effect. The high elasticity is ensured by ensuring that the synthetic rubber and plastic plate does not easily become hard at low temperature.

A joint connect assembly may include a metallic ring connector configured to couple with one or more tubular composite beams. The joint connect assembly may include a layer arranged between the metallic ring connector and an external surface of the one or more tubular composite beams. The layer may be formed of a material configured to reduce local stress concentrations on the one or more tubular composite beams. The material of the layer may be an elastomeric material, e.g., the layer may include at least one of a natural rubber, synthetic rubber, or a combination thereof.

The invention provides high-strength wear-resistant ultralow-rolling-resistance conveyor belt cover rubber and a preparation method thereof, and relates to the technical field of conveyor belts, the cover rubber comprises the following components by weight: 40-80 parts of natural rubber, 20-60 parts of synthetic rubber, 40-80 parts of a hybrid reinforcing material, 1-2 parts of sulfur, 1-5 parts of zinc oxide, 1-3 parts of stearic acid, 1-8 parts of an accelerator, and 1-5 parts of an anti-aging agent. According to the high-strength wear-resistant ultralow-rolling-resistance conveyor belt cover rubber and the preparation method thereof, the high-structure carbon black N339 and the nano silicon dioxide are hybridized, so that ion covalent bonds are formed between the high-structure carbon black N339 and the nano silicon dioxide, the N339 and the nano silicon dioxide are uniformly dispersed, the structure is stable, and the nano silicon dioxide can be uniformly dispersed without a traditional coupling agent; the N339 and the nano silicon dioxide are subjected to hybridization treatment, so that the structure is more stable, the RRF coefficient of the sizing material is reduced, and the reinforcing effect is improved.

The utility model belongs to the technical field of rubber production, and particularly relates to a synthetic rubber material grinding and smashing device which comprises a smashing box, a feeding port is formed in the top of the smashing box, a discharging port is formed in the bottom of the smashing box, and a coarse smashing chamber, a fine smashing chamber, a recycling chamber and a discharging chamber are sequentially arranged in the smashing box from top to bottom. Sieve plates are arranged among the chambers and comprise a first sieve plate, a second sieve plate and a third sieve plate, a heating plate is arranged on the outer wall of the coarse crushing chamber, the first sieve plate and the second sieve plate are connected with an air blowing device, and a spiral material guiding mechanism for conveying materials is arranged at the lower end of the third sieve plate; the output end of the spiral guide mechanism is connected with the fine crushing chamber, a coarse crushing mechanism is arranged in the coarse crushing chamber, a fine crushing mechanism is arranged in the fine crushing chamber, the coarse crushing chamber, the fine crushing chamber and the recovery chamber are sequentially arranged to crush rubber raw materials, and the crushing effect of the raw materials is fully guaranteed.

A system for holding multiple beverage containers may include a cooler or carrier with toting handles, closing tabs, and base. The base may be formed from a molded plastic, rubber or synthetic rubber material. The base may also include feet that hold the base a sufficient height from the ground. The base may have a generally conic tapering drain floor that makes up its top surface. The tapering drain floor may make draining the carrier easier by directing water toward a drain hole located in the base. Extending up from the base may be a multi-layer soft-sided wall where different layers perform different desired functions. For example, an inside layer closest to the internal cavity may be a waterproof layer, a middle layer may be an insulating layer, and an external layer may be a decorative layer.

A downhole expandable tubular for expansion in a well downhole to abut against an inner face of a well tubular metal structure or borehole, includes at least first and second circumferential edges on the outer face, forming a circumferential groove, a sealing unit arranged in the circumferential groove. The sealing unit includes a post-transition metal material, the sealing unit has an annular sealing element and a retaining element, and at least the retaining element comprises the post-transition metal material, and the annular sealing element is made of elastomer, natural or synthetic rubber, or a polymer.

The sustainable hydraulic hose comprises of an inner-tube, reinforcement which renders robustness to the hose to withstand higher pressures and finally the cover compounds which is the exterior most part of the hose. The present invention relates generally to a sustainable hydraulic hose which is substantially minimizing the use of conventional fossil fuel derived raw materials. Nitrile (NBR) / SBR based innertube is used along with Nitrile (NBR) / SBR based cover compounds and the hydraulic hose accounts for at least 50 % and extendable up to 80 % sustainability. Unlike conventional hoses, which may use petroleum-based synthetic rubbers, sustainable options often incorporate recyclable or biodegradable materials like elastomers, fillers, rubber additives, plasticizers which is derived from bio- origin without depleting the non-renewable resources and at the same time it is ensured that the hoses meet high standards for both performance and environmental impact, providing users with assurance of their eco-friendly credentials.

The utility model relates to a rubber base plate for coil steel transportation, which comprises a steel plate, a rubber plate is laid above the steel plate, the rubber plate is adhered on the steel plate by adopting a vulcanization process, and a plurality of mounting holes are arranged on the steel plate and positioned on the outer side of the rubber plate. The rubber base plate is applied to coiled steel transportation equipment, the problem that a bonding type rubber base plate is difficult to replace is solved by changing the installation mode of the rubber base plate for coiled steel transportation, the installation efficiency of the rubber base plate can be improved, and the purpose of replacing the rubber base plate on site is achieved through a bolt and nut combined connection mode; the rubber plate is made of composite synthetic rubber, has strong weather resistance, acid and alkali resistance, cold resistance and high temperature resistance, is bonded on the steel plate by adopting a vulcanization process, has higher adhesive force, is doubled in bonding strength, and is short in construction period, simple to operate and convenient to replace.

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.

The invention discloses a nitrile rubber production sewage treatment process and device, and belongs to the technical field of synthetic rubber sewage treatment. According to the technical scheme, the sewage treatment device comprises a homogenizing tank, a two-stage air floatation tank, a high-density sedimentation tank I, a nitrile removal and cyanide breaking unit, an adsorption sedimentation tank, a hydrolysis acidification tank, a denitrification tank, an aeration tank, a secondary sedimentation tank, a denitrification filter tank, an engineering bacterium biological filter tank and a sedimentation filter tank which are sequentially connected through pipelines; the sewage treatment process comprises the following steps: 1) pretreating glue-containing sewage; the invention provides a nitrile-butadiene rubber production device sewage treatment method, which comprises the following steps of 1) nitrile removal and cyanogen breaking treatment, 3) biochemical treatment, and 4) sewage up-to-standard deep treatment.The nitrile-butadiene rubber production device sewage treatment method is safe and reliable in operation, can perform efficient denitrification and decarbonization treatment on all sewage in a nitrile-butadiene rubber production device area, enables the discharged sewage to reach the GB31571-2015 direct discharge standard, provides a tail gas discharge treatment scheme, and radically solves the problem of environmental pollution.

The present invention provides a method for terminating and anti-aging after the polymerization reaction of synthetic rubber, which comprises the following steps: adding a terminator solution, a non-ionic surfactant and an anti-aging agent to the polymerization reaction solution after the polymerization reaction of synthetic rubber in sequence and carrying out a stirring reaction. The method for terminating and anti-aging after the polymerization reaction provided by the present invention has less consumption of auxiliary agents, and the rubber product has good anti-aging performance. The method for terminating and anti-aging is to first add water or an alcohol solution, and then add substances such as a non-ionic surfactant and an anti-aging agent. This method for terminating and anti-aging can avoid the direct reaction between the residual catalyst that is not completely terminated and the anti-aging agent, and ensure that the synthetic rubber has good aging resistance. At the same time, this method for terminating and anti-aging has the characteristics of less consumption of auxiliary agents, no by-products, no pollution, environmental protection, etc., and can improve the stability of synthetic rubber products.

The invention discloses a crack repairing material for repairing prefabricated building cracks, which belongs to the technical field of building materials and comprises the following steps: a) preparing raw materials; b) premixing; c) melting and mixing; d) adding the residual rubber powder; e) cooling and curing; and f) cutting and packaging. Polymer base materials (such as polyurethane, epoxy resin, acrylic resin and the like), functional auxiliaries (such as plasticizers, anti-aging agents and the like) and rubber powder (such as butadiene styrene rubber powder, natural rubber powder, synthetic rubber powder and the like) are meticulously selected, so that the prepared crack repairing material has excellent cohesiveness, weather resistance, elasticity and wear resistance. And nano-scale reinforcing materials (such as nano silicon dioxide, nano calcium carbonate, nano aluminum oxide and the like) are added, so that the mechanical property and durability of the joint filling material are further improved, the joint filling material can bear larger stress and deformation, and the service life is prolonged.

The invention provides steel wire rubber formula rubber based on bionic synthetic rubber. The steel wire rubber formula rubber comprises 70-90 parts of bionic synthetic rubber, 10-20 parts of butadiene rubber, 6-10 parts of zinc oxide, 0.5-1 part of stearic acid, 2-4 parts of an anti-aging agent, 1-2 parts of an adhesive, 3-6 parts of reinforcing resin, 0.4-2.5 parts of a resin curing agent, 50-100 parts of carbon black, 1.5-2.5 parts of an accelerant and 5.5-7.5 parts of a vulcanizing agent. The invention further provides a preparation method and application of the formula adhesive for the steel wire adhesive. The steel wire rubber formula rubber based on the bionic synthetic rubber provided by the invention is excellent in processability and good in steel wire frictioning effect, and the steel wire rubber has high bonding performance with a steel wire after vulcanization.

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.

Disclosed is a grip (100, 300, 500, 1100) that includes a material (104, 1110) having a wrist end (120, 520, 1112), a finger end (122, 522, 1114), and sides that extend from the wrist end to the finger end. The wrist end of the material has a concave shape that (i) is between the sides of the protective material and (ii) defines at least two legs (128A, 128B, 1120, 1122) on opposite sides of an apex (126) of the concave shape. A wrist strap (102, 1102) is attached to a leg of the wrist end. A hand covering (1600, 1700) comprising a palm protection area (1702) having a non-woven composite material exposed on a first face and a synthetic rubber material exposed on a second opposite face, the palm protection area having different widths at different locations along an axis that extends between a wrist end (1606) and a finger end (1604); and a wrist securing member (1708) at the wrist end.

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 present invention relates to a foamable polymer composition containing a polymer selected from the group consisting of polyolefins (PO),polyolefin elastomers (POE), polyolefin block co-polymers (OBC), ethylene vinyl acetate copolymers (EVA), EVA / PO copolymers, EVA / OBC copolymers, polyvinylchloride (PVC), polymers of styrene, natural and synthetic rubbers, polyamides, polyimides, and combinations thereof, a functionalized particulate bicarbonate, and thermally expandable microspheres, to methods for manufacturing a foamed polymer using such foamable polymer composition, and the use of said foamed polymers.

The utility model discloses a heat preservation space capsule capable of improving cold air loss prevention effect, which comprises a space capsule body, a transverse plate is fixedly connected to the bottom end of the front side in the space capsule body, a door frame is fixedly connected to the bottom end of the transverse plate, a second capsule door is hinged to the inside of the door frame, a first capsule door is arranged on the front side of the second capsule door, and a second capsule door is arranged on the front side of the first capsule door. The first cabin door and the space capsule body are matched in a hinged mode, an inner container is fixedly connected to the inner side of the space capsule body, a synthetic rubber heat preservation layer is fixedly connected to the outer side of the inner container, and a foam layer is fixedly connected between the synthetic rubber heat preservation layer and the space capsule body. The first cabin door and the second cabin door are arranged, when a person needs to enter the space capsule body, the first cabin door is opened firstly, and the person enters the space between the first cabin door and the second cabin door after being opened, and then the first cabin door is closed, and the second cabin door is opened; through the structure, outward loss of cold air in the space capsule body due to opening of the first capsule door can be reduced.

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 present invention addresses the problem of providing a rubber composition for a tire, which can improve the proportion of sustainable materials in tires and can contribute to reducing environmental burden throughout the entire process of producing, using, and disposing of synthetic rubber. A means for solving this problem is a rubber composition for tires, which is characterized by: containing a rubber component (A) that includes a rubber (A1) having an isoprene skeleton and a synthetic rubber (A2), with the content of the rubber (A1) having an isoprene skeleton being 10-90 parts by mass and the content of the synthetic rubber (A2) being 90-10 parts by mass in a total of 100 parts by mass of the rubber component (A); the synthetic rubber (A2) including a synthetic rubber (A2-1) supplied using a mass balance approach.

The compositions herein are directed to a rubber composition, which contains a polymer crosslinked with methacrylate and polyacrylate, a polysaccharide or gum, and a cellulose base for filling molds.

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 utility model discloses a shock-proof flange structure for a butterfly valve, which comprises the butterfly valve and a flexible synthetic rubber joint matched with the butterfly valve, and further comprises a flange structure arranged between the butterfly valve and the flexible synthetic rubber joint and used for avoiding direct contact of two rubber planes. The butterfly valve has the beneficial effects that the thin steel flange is additionally arranged between the butterfly valve and the flexible synthetic rubber joint, and the butterfly valve and the flexible synthetic rubber joint are separated, so that the direct contact of two rubber planes is avoided, the extrusion damage phenomenon is avoided, and the service life of the butterfly valve and the flexible synthetic rubber joint is prolonged. And the reliability of a sealing surface and the stability of screw connection are better ensured, so that the normal work of the oil pump is effectively ensured.

The invention relates to the technical field of tire rubber manufacturing, and discloses a high-temperature-resistant new energy automobile tire tread rubber composition. The rubber composition is prepared by mixing the following raw materials based on 100 parts by weight of raw rubber: 40-60 parts of natural rubber, 40-60 parts of synthetic rubber, 5-45 parts of filler, 10-15 parts of unsaturated polyester resin, 15-25 parts of liquid butadiene rubber, 0.5-2 parts of a cross-linking agent and 5-15 parts of a plasticizer. The molecular structure of the unsaturated polyester resin contains carboxyl groups, the molecular weight is 5000-8000, and the unsaturation degree range is 0.2-0.8; the liquid butadiene rubber is modified liquid butadiene rubber with terminal amino and can react with unsaturated polyester resin to perform cross-linking reaction, so that the wear resistance, the thermal stability and the overall performance of the tire are effectively improved, and the method is suitable for manufacturing tires of new energy cars.

The invention discloses waste rubber recovery treatment equipment for processing synthetic rubber fire-fighting bags, and relates to the technical field of rubber recovery. The waste rubber recovery processing equipment for processing the synthetic rubber fire-fighting bags comprises a machine body and a supporting frame fixedly installed at the top of the machine body, a recovery processing mechanism comprises a tank body and a feeding hopper, a cover plate is fixedly installed at the end, away from the feeding hopper, of the tank body, and a leakage hole is formed in the bottom of the outer circle face of the tank body; triangular fixing teeth are fixedly connected to the bottom of an inner cavity of the tank body, a machining assembly is installed in the middle of the tank body and comprises a round roller and a servo motor, a cutter is fixedly connected to the outer circle face of the round roller, crushing teeth are fixedly connected to the outer circle face of the round roller, and right-angle stirring teeth are fixedly connected to the outer circle face of the round roller. And the right-angle stirring teeth correspond to the servo motor in position, and a pushing plate is fixedly installed at the end, away from the right-angle stirring teeth, of the round roller, so that the purpose of stage treatment is achieved, stage-by-stage treatment can be conducted, and winding is not prone to occurring.

A bioremediating composition including a consortial culture with at least one fungal culture and at least one bacterium culture, a growth medium with a waste material that includes synthetic rubber and method for producing a biodegradable byproduct from a waste material that includes synthetic rubber, preparing the growth medium with the waste material, and incubating the growth medium with at least one bioremediating composition with at least one fungal and one bacterium culture.

The invention discloses a heat transfer film as well as a preparation method and application thereof. The heat transfer film comprises a frame layer, a foaming layer, a reinforcing layer and a transfer release layer which are sequentially arranged, the preparation raw materials of the modified aramid fibers comprise aramid fibers modified with amide groups and polyamide nanoparticles; the foaming layer is prepared from the following raw materials: styrene synthetic rubber, a heat-conducting material, a conductive material, inorganic filler, foaming microspheres, a coupling agent and a vulcanizing agent; the reinforcing layer is prepared from the following raw materials: acrylate rubber, a heat-conducting material, a conductive material, an inorganic filler, a coupling agent and a vulcanizing agent; the ink has the characteristics of insulation and heat conduction and is suitable for transfer printing of electronic ink.