226 results about "Crumb rubber" patented technology

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

The invention provides a light-weight automobile appearance decorating part added with recycled waste and a forming process of the light-weight automobile appearance decorating part, and belongs to the technical field of automobile part manufacturing. The preparation method comprises the following steps: mixing a core layer melt containing polypropylene recycled after consumption, waste tire rubber and a styrene-ethylene-butylene-styrene block copolymer with a supercritical fluid to form a uniform dispersion; after an acrylonitrile-styrene-acrylate copolymer surface membrane is formed in a mold cavity, injecting the uniform dispersion to drive the membrane to extend and fill; and gas is induced to generate heterogeneous nucleation on the surfaces of the waste tire rubber particles through pressure relief and grow into bubbles. On the premise that the surface glossiness is not degraded, light weight and high toughness of the appearance decorating part and efficient utilization of renewable resources are achieved.

The invention discloses a rubber particle preparation method based on recycled tennis balls, an environment-friendly runway construction method and an environment-friendly runway, and belongs to the field of runway construction.The method comprises the following steps that Sa1, the recycled tennis balls with impurities removed are put into a smashing machine at a constant speed, and surface felt and a rubber inner core are smashed and separated through the smashing machine; sa2, disinfection and washing are carried out; sa3, separating the fibers from the rubber particles; sa4, naturally air-drying the fibers and the rubber particles; sa5, classifying and screening; and Sa6, classifying, sealing and storing. By the adoption of the rubber particle preparation method based on the recycled tennis balls, the environment-friendly runway construction method and the environment-friendly runway, vulcanized rubber resources in the waste tennis balls can be efficiently recycled, meanwhile, high-valued application of the resources is achieved through the following environment-friendly runway construction steps, and a complete technical closed loop of recycling, preparation and application is formed.

The invention belongs to the field of concrete, and particularly discloses a method for predicting the splitting tensile strength of concrete. In the prediction method, the formula for calculating and determining the splitting tensile strength of the concrete relates to the maximum particle size of rubber particles in raw material aggregate for preparing the concrete, the minimum particle size of the rubber particles in the aggregate, the volume ratio of the rubber particles in the aggregate, the particle size coefficient of the rubber particles and the maximum particle size coefficient of the rubber particles in the aggregate. According to the prediction method, the synergistic effect of the particle size interval and the substitution rate of the rubber particles in the concrete raw materials can be considered at the same time, a clear strength prediction range can be provided in the design stage, optimization of aggregate selection and material parameter configuration is facilitated, and the design efficiency and the matching reliability are improved.

To provide a construction method of a high-quality outdoor ground or outdoor coat allowing the deformation of an ascon layer expanded or contracted caused by the different thermal expansion coefficients of the ascon layer composed of asphalt or the like and a surface layer.SOLUTION: An outdoor ground or an outdoor coat 1 is constructed by forming a surface layer 5 including rubber chips or a hard coat on an ascon layer 3 for preventing the protrusion and crack of the ascon layer 3 composed of asphalt or concrete. A slit 30 having a different thermal expansion coefficient between the ascon layer 3 and the surface layer 5 and having a gap capable of deforming the ascon layer 3 expanded or contracted caused by warming is formed on an upper surface 31 of the ascon layer 3, and the surface layer 5 is formed on the ascon layer 3 formed with the slit 30 through an insulating sheet.SELECTED DRAWING: Figure 5

The present invention discloses a rubber composition, a processing method thereof, and rubber product reinforced with silica using the same. The rubber composition comprises a rubber matrix and essential components, wherein, based on 100 parts by weight of the rubber matrix, the rubber matrix comprises, a branched polyethylene with a content represented as A, in which 0<A≤100, and an EPM and an EPDM with a total content represented as B, in which 0≤B<100; and the essential components comprise 1-10 parts of a crosslinking agent and 15-80 parts of silica. The rubber composition can be used for producing high-voltage insulating sheath rubber, high-temperature resistant conveyor belt, waterproof coil, rubber particles for plastic track surface layer, rubber plug, rubber roller, inner tube, tire tread, tire sidewall, and inner rubber layer of air-conditioner hose.

The utility model relates to the technical field of rubber processing equipment, and discloses rubber shock pad processing and feeding equipment which comprises a moving table and connecting frames fixed on the front side and the rear side of the upper surface of the moving table, the upper surfaces of the connecting frames are fixedly connected with side plates, and the inner side faces of the side plates are fixedly connected with feeding hoppers. And the bottom of the outer surface of the feeding hopper communicates with a feeding pipe. According to the feeding equipment for rubber shock pad processing, the feeding hopper, the feeding pipe, the storage device and the moving table are used in cooperation, rubber particle raw materials in the storage barrel enter the feeding hopper through a conveying hose, a hydraulic cylinder pushes a sliding table to move, the outlet end of the feeding pipe moves to the position above a mold, then feeding is conducted on the mold, and the rubber shock pad processing efficiency is improved. Therefore, the device can supply common rubber particle raw materials to the mold, the inner diameters of the conveying hose, the feeding hopper and the feeding pipe are large enough, the probability of blockage of the rubber raw materials is further reduced, and the smoothness of rubber feeding is improved.

An object of the present invention is to provide rubber-bonded cellulose fibers that are less likely to cause an increase in viscosity or melt viscosity when added to various resins. Rubber-bonded cellulose fibers that solve the above problem contain cellulose fibers; a plurality of rubber particles disposed on surfaces of the cellulose fibers and having an average particle size of 300 nm or less; and a silane compound that bonds the cellulose fibers and the rubber particles.

A rubber composition, which allows unexpectedly improved tearability performance while having maintained or improved hysteresis performance, is based on at least an elastomer matrix, a reinforcing filler, a plasticizing agent, and a crumb rubber. A ratio by weight of the total amount of the reinforcing filler to that of the plasticizing agent is less than 4.50. The total amount of the reinforcing filler and the crumb rubber is more than 30 phr and less than 70 phr. A ratio by weight of the total amount of the crumb rubber to that of the reinforcing filler is more than 0.20 and less than 2.50.

The invention discloses freeze-thaw-resistant concrete and a preparation method thereof. The freeze-thaw-resistant concrete is prepared from the following raw materials: cement, river sand, gravel, water, isoprene rubber particles coated with paraffin on the surfaces and an additive, the preparation method comprises the following steps: uniformly mixing the river sand and the isoprene rubber particles coated with the paraffin on the surface, adding other raw materials, and uniformly mixing. Space generated after the isoprene rubber particles are extruded provides space for freezing expansion of free water, expansion pressure is relieved, the freeze-thaw resistance of concrete is improved, the surfaces of the isoprene rubber particles are coated with paraffin, and under the freeze-thaw condition, the paraffin is solidified, releases heat and reduces osmotic pressure and ice expansion pressure, so that the freeze-thaw resistance of the concrete is improved, and the service life of the concrete is prolonged. The paraffin surrounds the isoprene rubber particles, erosion of water to the isoprene rubber particles can be reduced, aging of the isoprene rubber particles can be inhibited, the thermal conductivity of the paraffin and the isoprene rubber particles is smaller than that of aggregate, temperature reduction of the aggregate can be inhibited, and the freeze-thaw resistance of the concrete is further improved.

The application provides a high-strength and high-toughness PVC profile and a preparation method thereof. The high-strength and high-toughness PVC profile comprises a first high-strength layer, a first fiber layer, a PVC layer, a second fiber layer and a second high-strength layer in sequence. The first high-strength layer and the second high-strength layer each comprise the following components in parts by weight: PVC resin 100-150 parts, calcium-zinc stabilizer 3-5 parts, reinforcing particles 15-20 parts, internal lubricant 0.5 part, external lubricant 0.5 part and stearic acid 0.2 part. The reinforcing particles are modified waste rubber particles. The first fiber layer and the second fiber layer are formed by rolling PVC slurry on fiber fabric, so that the comprehensive performance of the PVC profile is effectively improved.

The invention relates to the technical field of high-performance polymer materials, in particular to low-dielectric and high-temperature-resistant modified cyanate ester resin and a preparation method thereof. Advantages and characteristics of bisphenol A type cyanate ester monomers and bisphenol M type cyanate ester monomers are combined, and the dielectric property and the thermal stability are remarkably improved. Diallyl bisphenol A is introduced as a network structure modifier, the phenolic hydroxyl group of the diallyl bisphenol A adjusts the curing reaction rate, and the allyl and bisphenol A structures of the diallyl bisphenol A finely regulate and control the rigid-flexible balance of a cross-linked network through chemical copolymerization, so that the curing process is controllable and the final network structure is optimized. Meanwhile, a toughening system is innovatively designed, epoxy-terminated liquid nitrile rubber is adopted for toughening, stable micron-scale rubber particles are formed in a resin matrix in a chemical bonding mode, and the fracture toughness is improved. The modified resin has excellent dielectric properties, high heat resistance and a wide process window, and meets the strict requirements of a new generation of low observability aircrafts on a bearing-stealth integrated composite material matrix.

The present application provides a hybrid runway article comprising from top to bottom: (I) a topcoat layer made from a first composition comprising an externally emulsified polyurethane dispersion and rubber particles, wherein the externally emulsified polyurethane dispersion is derived from: (Ai) an isocyanate component comprising one or more compounds having at least two isocyanate groups, (Bi) an isocyanate-reactive component comprising one or more compounds having at least two isocyanate-reactive groups, (Ci) an optional catalyst, (Di) an external emulsifier, (Ei) a chain extender, and (Fi) water, and (II) a bottom layer made from a second composition comprising a 1K solventless polyurethane binder and rubber particles.

The rubber production waste recycling device comprises an outer barrel, a second inner barrel located in the outer barrel and a first inner barrel located in the second inner barrel, a feeding opening is formed in the wall body of the outer barrel, a side plate capable of horizontally moving is arranged on one side of the outer barrel, and the first inner barrel is arranged on the side plate. A cutting blade is arranged on the inner wall of the outer cylinder body at the feeding port, a rotating roller is arranged in the first inner cylinder body, a first through groove is formed in the wall body of the first inner cylinder body, a crushing plate is arranged on the rotating roller, and a discharging assembly used for conveying rubber particles is arranged in the rotating roller; a push block is arranged on the outer circle wall of the second inner cylinder, a feeding plate is arranged in the second inner cylinder, and a second through groove is formed in the wall body of the second inner cylinder. According to the device, rubber is firstly frozen at low temperature, then the rubber can be smashed into particles through beating and impacting of the smashing plate, and therefore recycling of rubber waste is achieved.

The utility model relates to flexible landfill reinforcement technical field, concretely relates to a kind of solid waste flexible landfill reinforcement mechanism, including side weir, composite reinforcement mechanism is provided in the inside of side weir, composite reinforcement mechanism includes the carbon fiber geogrid of several groups being laid in the inside of side weir, the top of carbon fiber geogrid is fixedly connected with flexible layer, flexible layer is composed of rubber particle and bentonite, basalt fiber is mixed in the inside of flexible layer, the top of flexible layer is fixedly connected with steel fiber concrete layer, the surface of steel fiber concrete layer is provided with four groups of installation slot. The utility model cooperates through side weir and composite reinforcement mechanism, provides high-strength tensile property through carbon fiber geogrid, effectively resists tensile deformation caused by uneven settlement of landfill, utilizes flexible layer to be made of rubber particle-bentonite-basalt fiber composite, and has elastic deformation capacity and impermeability.

The utility model relates to rubber carpet processing technical field especially rubber carpet glue injection forming device, including bottom plate and the processing frame of setting at the top of bottom plate, the left and right ends of processing frame are connected with auxiliary block, the outer end sliding connection of auxiliary block has the push -back, the top of push -back is provided with the slot, the rear end of push -back is connected with the hopper, the rear end of hopper is connected with the connecting plate, the bottom of connecting plate is connected with the scraper, the inside sliding connection of push -back has the baffle, the front end of baffle is connected with the pull -out plate, and the baffle is used for stopping the hopper bottom, and the slot is used for moving push -back and sliding on the auxiliary block, the utility model discloses the coordination and cooperation of material guide and scraping flat structure, significantly improve the uniformity and pressing quality of rubber particle filling, effectively reduce the finished product defect rate, guarantee the stability and consistency of the forming process.

The utility model relates to the field of plastic runways, and discloses a combined type plastic runway buffer structure which comprises a supporting assembly and a positioning assembly, the positioning assembly is installed at the bottom of the supporting assembly, the supporting assembly comprises a bottom plate and a waterproof film, the top of the waterproof film is coated with a bonding layer, and the bonding layer is arranged on the bottom plate. Sealing sleeves are connected to the positions, close to the two sides, between the bottom plate and the waterproof film, the top of the bottom plate is filled with an elastic plastic layer, the top of the elastic plastic layer is filled with a rubber particle layer, and a plurality of rubber columns are installed in the elastic plastic layer and the rubber particle layer in a penetrating mode. The rubber columns are sealed, so that the overall buffering is improved, external moisture is prevented from entering, and the expansion can be adapted in the buffering process; and through the grating plate and the leveling layer, the adhesive force of the grating plate is increased, overall supporting and fixing are improved, and separation caused by sliding between the grating plate and the ground is prevented.

The invention discloses a preparation method of photo-thermal double-excitation self-repairing rubber modified asphalt, and belongs to the technical field of road engineering materials. The method comprises the following steps: firstly, dissolving 8.8-10 parts by weight of 2, 2 '-diaminodiphenyl disulfide and 10-12 parts by weight of vanillin in ethanol, carrying out reflux reaction at 80-85 DEG C for 8-12 hours, and washing and drying to obtain a double-dynamic covalent cross-linking agent with disulfide bonds and imine bonds; secondly, carrying out internal mixing and hot press molding on 90-110 parts by weight of epoxidized natural rubber with the epoxy value of 50 and 4-8 parts by weight of the cross-linking agent, and crushing to obtain photo-thermal double-excitation self-repairing rubber particles; and finally, melting 100 parts by weight of matrix asphalt, adding 4-8 parts by weight of rubber particles in 3-5 times, and performing high-speed shearing at 175-180 DEG C for 30-40 minutes to obtain the modified asphalt. By constructing an imine bond-disulfide bond synergistic dynamic cross-linked network, the asphalt is endowed with excellent photo-thermal double-excitation self-repairing capacity, and meanwhile, the asphalt has good high and low temperature performance and mechanical strength.

The invention relates to the field of construction materials, in particular to a backfill material composed of mixed industrial waste applied to a low load level, the backfill material composed of the mixed industrial waste applied to the low load level comprises broken tempered glass, old plastic and waste tire rubber particles according to the volume ratio of 6: (1-1.5): (2.5-3), the water content of the backfill material is 0.7-1.2%, and the water content of the backfill material is 0.5-1.5%. And when the backfill material is dumped to the backfill area, the ground clearance of the backfill material is 1.5-2m. The backfill material composed of the mixed industrial waste materials applied to the low load level is composed of pure waste materials, the waste materials meet environmental safety, the backfill material only needs to be directly poured into a backfill area at a certain height during use, the compaction degree can be larger than 90% without being compacted, the vertical strain of a formed backfill body under the load of 6 kPa is smaller than 0.42%, and the vertical strain of the backfill body under the load of 6 kPa is smaller than 0.42%. And the method can be applied to low-load-level engineering parts such as municipal pipe gallery backfilling and park greenway lower cushion layers.

The application provides a method for preparing anti-permeation anticorrosive filler from waste rubber and anticorrosive paint, and belongs to the technical field of paint, which comprises the following steps: crushing and sieving waste rubber to obtain rubber particles, then sequentially performing acid pickling, alkali washing and water washing, and drying, then adding the rubber particles into tetrachloroethylene for chlorination, then removing flocculent products by using a blast rotary furnace, then adding the rubber particles into tetrachloroethylene again for chlorination and performing bubbling operation, and then draining to obtain the anti-permeation anticorrosive filler. The anti-permeation anticorrosive filler prepared by the method has improved chlorine content and enhanced corrosion resistance, the anticorrosive coating prepared by using the filler can effectively solve the diffusion problem of water molecules, can effectively inhibit the permeation and migration of corrosion medium chloride ions, and can greatly improve the anti-permeation performance.

The utility model discloses an anti-slip umbrella handle, which belongs to the technical field of umbrella handles and comprises an umbrella rod and a grip, the grip is connected onto the umbrella rod, a plurality of anti-slip strips are fixedly arranged on the grip, a plurality of rubber particles are fixedly arranged on the anti-slip strips, a rubber strip is fixedly arranged on the grip, and the rubber strip is fixedly arranged on the grip. The rubber strips are arranged on the grip, the anti-slip strips and the rubber strips are arranged on the grip in a staggered mode, and the anti-slip grip has the advantage that the anti-slip effect of the grip is improved.

This invention discloses a raw material conveying device for conveyor belt production, belonging to the field of conveyor belt production technology. It includes: a conveying cylinder; a support mechanism and an adjusting mechanism are provided at the bottom of the conveying cylinder; a striking mechanism is provided at the top of the conveying cylinder; a conveying auger is rotatably installed inside the conveying cylinder; a discharge mechanism is provided at one end of the conveying cylinder; and a drive mechanism, a transmission mechanism, and a linkage mechanism are provided at the other end of the conveying cylinder. This invention, through its double-layer cylinder structure, linkage drive mechanism, and vibration striking mechanism, effectively improves the screening efficiency during the conveying of rubber granules, automatically clears screen blockages, and prevents material accumulation. By utilizing the linkage between a centrifugal force sensing device and the discharge control mechanism, it achieves the function of automatically adjusting the discharge port size according to the conveying speed, ensuring the stability of material conveying. Simultaneously, the overall tilt angle of the equipment is adjustable, significantly enhancing its adaptability to different working conditions.

The utility model relates to the technical field of cable processing, and discloses cable processing rubber particle melting equipment which comprises a melting tank, a tank cover is arranged on the outer surface of the melting tank, a connecting shaft is rotatably connected to the outer surface of the bottom of the tank cover, and a second motor is fixedly installed on the outer surface of the top of the tank cover. A stirring shaft is fixedly connected to the outer surface of the bottom of the hollow frame, a positive and negative screw rod rotationally penetrates through the space between the opposite outer surfaces of the left side and the right side of the hollow frame, a rotary knob is fixedly connected to the outer surface of the positive and negative screw rod, a threaded plate is in threaded connection to the outer surface of the positive and negative screw rod, and a scraper is fixedly connected to the outer surface of an L-shaped plate. When the inner wall of the melting tank needs to be cleaned, a rotary knob is rotated, the rotary knob drives a positive and negative lead screw to rotate, a threaded plate is driven to enable an L-shaped plate to drive a scraping plate to move till the scraping plate makes contact with the inner wall of the melting tank, and a second motor drives a connecting shaft to drive the scraping plate to scrape the inner wall of the melting tank.

This invention relates to the field of rubber materials technology, and proposes a wear-resistant and anti-aging rubber granule for sports fields, comprising the following raw materials in parts by weight: 90-110 parts hydrogenated nitrile rubber, 30-40 parts wear-resistant composite filler, 20-30 parts fluororubber, 8-12 parts plasticizer, 1-3 parts antioxidant, 0.5-1 part vulcanizing agent, and 1-2 parts vulcanization accelerator; the wear-resistant composite filler comprises the following raw materials in parts by weight: 100 parts carbon black, 20-30 parts sodium silicate, and 5-15 parts sodium aluminate. This technical solution solves the problem of insufficient aging resistance and wear resistance of rubber granules in related technologies.

This utility model discloses a waste tire rubber granulation and reuse equipment, belonging to the technical field of processing equipment. It includes: a crushing box with a feed hopper at the top and a discharge port at the bottom side; a crushing assembly comprising two symmetrical rotating cylinders rotatably mounted on the inner wall of the crushing box, and crushing rollers fixed to the outer surfaces of the two rotating cylinders; and a screening assembly for screening and removing metal objects from the crushed rubber granules. By incorporating the crushing and screening assemblies, this utility model enables rapid crushing of waste tires and effective adsorption of falling metal objects by a cylindrical electromagnet under energization, thereby achieving effective screening and removal of metal objects from the crushed waste tire rubber granules. It has significant practical applications.

The utility model discloses a multifunctional solid-sealed polar pole, which relates to the technical field of polar poles, and comprises a shell, a vacuum arc-extinguishing chamber is integrally formed in the shell, a multifunctional layer is arranged between the vacuum arc-extinguishing chamber and the shell, and the multifunctional layer comprises a resin base layer attached to the outer arc wall of the vacuum arc-extinguishing chamber. Rubber particles and high-temperature-resistant functional groups are arranged in the resin base layer, and carbon fiber bundles are laid on the resin base layer in the weft direction; according to the utility model, the rubber particles and the high-temperature-resistant functional groups are added inside the resin base layer, so that the elasticity and the high-temperature-resistant performance are improved, the carbon fiber bundles are flatly laid along the weft direction, the mechanical property is enhanced, the stress is uniformly dispersed, the risks of stress concentration and cracking are reduced, and the problem that the temperature-resistant performance of the traditional epoxy resin is limited is solved.

The invention discloses high-performance improved bamboo residue-rubber-recycled concrete and a preparation method thereof, and belongs to the technical field of building materials, and the high-performance improved bamboo residue-rubber-recycled concrete is prepared from the following raw materials: 350-380 kg / m < 3 > of cement, 700-1100 kg / m < 3 > of coarse aggregate, 800-860 kg / m < 3 > of fine aggregate, 200-210 kg / m < 3 > of recycled aggregate, 15-20 kg / m < 3 > of rubber particles, 100-110 kg / m < 3 > of water, 4-6 kg / m < 3 > of a water reducing agent and improved bamboo residues. The mixing amount of the improved bamboo residues is 0.2-0.8% of the total volume of the concrete. According to the invention, the improved bamboo residues effectively play a role in fiber reinforcement in the concrete, and the recycled aggregate and the rubber particles are cooperatively utilized, so that the mechanical property and the crack resistance of the concrete are remarkably improved, high-valued utilization of various solid wastes is realized, and the concrete has excellent performance and environmental protection benefits.

The invention discloses engine suspension rubber body extrusion equipment. The engine suspension rubber body extrusion equipment comprises an extruder and a feed hopper arranged on the extruder, a filter plate is arranged in the feeding hopper, an opening in the upper end of the feeding hopper is sunken downwards to form a long-strip-shaped groove, the side face of the filter plate is connected with a push rod, the push rod penetrates through the long-strip-shaped groove and extends out of the feeding hopper, and a vibration mechanism is arranged outside the feeding hopper. The vibration mechanism can drive the filter plate to move up and down in a reciprocating manner through the push rod; a sealing strip is detachably arranged in the long-strip-shaped groove, and the sealing strip at least partially shields the long-strip-shaped groove. The problems that in the prior art, a feeding hopper of an extruder cannot filter feeding particles, and the bridging phenomenon occurs when large rubber particles enter the extruder are solved.

The utility model relates to the field of rubber particle production, in particular to a rubber particle production extrusion device. The utility model provides a rubber particle production extrusion device which can stir and discharge a rubber mixture, prevent blockage and caking, improve the production efficiency, reduce the cleaning time and improve the use convenience. A rubber particle production extrusion device comprises a supporting base, a granulation cylinder, a discharging cylinder and the like, the upper portion of the supporting base is connected with the granulation cylinder, and the upper side of the right portion of the granulation cylinder is connected with the discharging cylinder. The first motor drives the extrusion screw rod to rotate, so that the bevel gear rotates, the rotating shaft rotates, the flat belt rotates to drive the spiral conveying blade and the stirring frame to rotate to stir and discharge a rubber mixture, and the rubber mixture enters the granulation cylinder, so that the rubber mixture can be stirred and discharged; and blocking and caking are prevented, the production efficiency is improved, the cleaning time is shortened, and the use convenience is improved.