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54 results about "Waste rubber" patented technology

A modified sbs-based composite asphalt material and a method for preparing the same

PendingCN122381588AWaste rubberBituminous materials
The application relates to the technical field of composite asphalt materials, in particular to a composite asphalt material based on modified SBS and a preparation method thereof, which comprises the following steps: S1. After heating, base asphalt is added with aromatic oil, and stirring is carried out for 15-20 min to obtain softened asphalt; S2. Preparation of modified SBS; S3. Modified SBS is gradually added into the softened asphalt, and shearing is carried out for 30-40 min; S4. Modified waste rubber powder is added, and after continuous shearing, sulfur is added, development is carried out at a rotating speed of 800-1000 rpm for 50-60 min, and the composite asphalt material based on modified SBS is obtained after standing and defoaming. Through the synergistic effect of modified SBS, modified waste rubber powder and modified additives, the synchronous improvement of high-temperature performance, low-temperature performance and fatigue resistance is realized, the performance attenuation rate of the composite asphalt material under the conditions of thermal oxygen aging and ultraviolet aging is reduced, and the service life of the asphalt pavement is prolonged.
Owner:CHINA MCC 2 GRP CO LTD +1

An automated control method and system for waste rubber recycling equipment

PendingCN122125829AWaste rubberProcess engineering
This application discloses an automated control method and system for waste rubber recycling equipment, relating to the field of waste rubber recycling technology. It is used to control the initial pyrolysis process in a pyrolysis reactor. The method includes the following steps: before the waste rubber enters the pyrolysis reactor, obtaining the effective moisture content and bound water content level of the waste rubber; selecting a corresponding initial pyrolysis treatment strategy based on the effective moisture content and bound water content level to suppress pressure fluctuations and energy consumption surges caused by rapid moisture evaporation during the initial pyrolysis process; and adjusting the temperature rise management curve, pressure relief management threshold, pressure relief management method, and waste rubber feeding management rate of the initial pyrolysis process according to the selected initial pyrolysis treatment strategy to achieve heating control, pressure control, and feeding control of the initial pyrolysis process. This application can effectively suppress pressure fluctuations and energy consumption surges caused by rapid moisture evaporation during the initial pyrolysis process, reducing the probability of production interruption.
Owner:JINAN LAIWU FUQUAN RUBBER CO LTD

High-strength and high-toughness PVC profile and preparation method thereof

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.
Owner:POTENTECH GUANGDONG

Cottonseed bio-oil pre-desulfurization rubber powder modified asphalt and preparation method thereof

PendingCN122103915APlastic recyclingBuilding insulationsCottonseed oilWaste rubber
The present application relates to the technical field of modified asphalt, and relates to cottonseed biological oil pre-desulfurization rubber powder modified asphalt and a preparation method thereof, wherein cottonseed oil residues containing unsaturated fatty acids are used to pre-swelling desulfurization of waste rubber powder, a three-dimensional cross-linking network of the rubber powder is effectively destroyed, functional group reconstruction is promoted, the compatibility and interface physical embedding of the rubber powder and base asphalt are improved, and the problem of easy delamination is overcome; the lubricating and diluting effects of the biological oil can reduce the tackifying effect of the rubber powder and reduce the structural viscosity of the modified system; the swelling rubber powder forms a dense elastic network in the matrix, which not only retains strong high-temperature anti-rutting and anti-permanent deformation capability, but also reduces the low-temperature stiffness modulus, improves the low-temperature flexibility and stress relaxation capability of the asphalt; the preparation method realizes high-value utilization of waste tires and oil refining waste residues, and has environmental protection and economic benefits.
Owner:SINTSZYAN TSZYAOTSZYAN KHAJVEJ PLENNING SERVEJ END DIZAJN KO LTD +1

Extruder for the assisted mechanochemical regeneration of scrap rubber

ActiveCN224446804UPolymer scienceWaste rubber
The utility model relates to the field of waste rubber processing especially, and more particularly to a kind of auxiliary waste rubber mechanochemical regeneration extruder, including base, shell, feed inlet, discharge plate and plasticizing mouth etc., multiple bases are connected in shell lower side, feed inlet is connected in shell left part upper side, discharge plate is rotatably connected in shell right upper portion, plasticizing mouth is clamped in shell right part upper side, and plasticizing mouth is contacted with discharge plate.The utility model pours waste rubber and softener into shell and is devulcanized or degraded, is heated by heating ring, is broken by extruding lever rotation, is filtered after flowing through filter screen, then is extruded into shape from plasticizing mouth, then is moved by push block, and the filter screen used is removed and is replaced by impurity, so that waste rubber can be treated and filtered, and extruded at the same time, convenient filter screen switching use and removal, convenient filter screen loading and unloading, cleaning and replacement, impurity cleaning is facilitated, cleaning efficiency is improved, and it is convenient to use.
Owner:SHANDONG SUNSHINE SHENGSHI MASCH EQUIP CO LTD

A kind of pulverizing mill device used in waste rubber tire recycling treatment

ActiveCN224296275USievingScreeningWaste rubberProcess engineering
The utility model relates to the technical field of crushing and grinding, specifically to a kind of crushing and grinding device for waste rubber tire recycling and processing, including the box of one end open one end closed, first through-hole is set up in the box, the first through-hole is set up in the box, two first sliding slots are set up, the screening assembly includes two sliding strips, sieve plate, extension plate, collection plate and two first limiting plates, extension plate slides, because sieve plate is fixed on sliding strip, make sieve plate slide along first sliding slot, by extension plate quick shaking, realize vibration, because sieve plate is inclined design, make unqualified rubber powder move to the other side, make rubber powder slowly from collection plate into secondary grinding, to unqualified rubber powder secondary grinding, solve the problem that filter is damaged due to serious blockage, prevent large rubber into subsequent production link, make final product appear more balanced, improve the quality and performance of product.
Owner:HUBEI NAITE RUBBER IND CO LTD

A long-life pavement material under extremely complex conditions and its preparation method

PendingCN122080655Aachieve structural stabilityRealize functionBuilding insulationsEnvironmental resource managementWaste rubber
This invention discloses a long-life pavement material for extreme and complex conditions and its preparation method. Modified asphalt pavement material is prepared using ultra-deeply decrosslinked rubber as the main raw material (with a content greater than 50%). Through specific processes and formulations, this pavement material retains excellent self-healing properties even under extreme low-temperature conditions (< -10 °C), with a healing efficiency greater than 50%, and a healing efficiency greater than 30% after aging, resulting in a long service life. This invention not only solves the problem of easy cracking in asphalt pavements and significantly improves their service life, but also enables the high-value resource utilization of waste rubber, resulting in significant environmental and economic benefits.
Owner:SHANGHAI JIAOTONG UNIV +1

Low temperature matrix asphalt modifier and method of making

PendingCN122103911APolymer scienceWaste rubber
This application provides a low-temperature matrix asphalt modifier and its preparation method, belonging to the field of road materials. The low-temperature matrix asphalt modifier is prepared from raw materials comprising the following components in parts by weight: SBR latex: 18-25 parts; waste rubber powder: 22-30 parts; base plasticizing resin: 18-22 parts; compatibilizer: 25-32 parts; crosslinking agent: 2-3 parts; stabilizer: 1.5-3.5 parts; high-adhesion resin: 5-8 parts; anti-aging agent: 0.05-0.15 parts; wherein the base plasticizing resin is a C5 / C9 copolymer petroleum resin with a softening point... 90~110℃; waste rubber powder is modified with vinyl polysiloxane, with a particle size of 80~120 mesh and a grafting rate of ≥85%; the compatibilizer is a compound of naphthenic oil and aromatic oil; the high-adhesion resin is C9 petroleum resin with a softening point of 110~130℃; the anti-aging agent has a melting point of 110~115℃ and excellent compatibility, which can significantly reduce the mixing temperature of asphalt mixtures, greatly reduce energy consumption during construction, and enable construction in environments above -10℃.
Owner:XINGTAI ROAD & BRIDGE CONSTR GENERAL +1

Modular inspection well head cover based on waste recycling

ActiveCN224549198UWaste rubberMesh reinforcement
The application discloses a modular manhole cover based on waste recycling, which comprises a waste reinforcement mesh frame, a waste cover plate arranged on the upper part of the waste reinforcement mesh frame, a reflective warning layer arranged on the upper surface of the waste cover plate, waste rubber arranged on the outer periphery of the waste cover plate and the waste reinforcement mesh frame, a waste reinforcement handle arranged on the waste cover plate, a waste reinforcement hook arranged on the lower part of the waste reinforcement mesh frame, and a waste counterweight barrel hung on the waste reinforcement hook. The application has the advantages that the comprehensive utilization rate of waste is greater than or equal to 90%, construction waste is reduced, the modular design is convenient to assemble and disassemble, the size is flexible, the cover can be used for the protection of manholes with different sizes, the multiple protection mechanism is wind-resistant and stable, the waste on a construction site is utilized, material cost is saved, the maintenance cost is very low, the waste cover can be replaced locally when a wood plate or a rubber strip is damaged, the waste cover does not need to be scrapped as a whole, and the waste cover can be recycled repeatedly.
Owner:CHENGDU JIANGONG ROAD & BRIDGE CONSTR +1

A kind of river revetment embankment soil prepared by using low organic matter dewatered sludge and a preparation method thereof

PendingCN122254818AAggregate (composite)Slag
The application belongs to the technical field of resource recycling, and provides a kind of river revetment embankment soil prepared by using low organic matter dewatered sludge and a preparation method thereof.The river revetment embankment soil comprises low organic matter dewatered sludge, composite aggregate, composite solidifying agent and raw soil;the composite aggregate comprises cement-coated recycled aggregate, gravel and silane-modified waste rubber particles;the composite solidifying agent comprises cement, alkali-activated blast furnace slag, silane-modified montmorillonite and biochar.The application takes low organic matter dewatered sludge as one of the main raw materials, simultaneously absorbs a large amount of construction waste recycled aggregate, industrial blast furnace slag, waste rubber and other multi-source solid waste, realizes waste control by waste through the complementation of the functions of various components and the optimization of process parameters, and the on-site mixing and layered compaction process adopted is simple and easy to implement, has high construction efficiency, and has good engineering adaptability and application value.
Owner:CHINA THREE GORGES CORPORATION +1

Automatic anti-sticking rubber breaker

ActiveCN224476424UElectric machineWaste rubber
This utility model relates to the technical field of rubber breaker machines, and in particular to an automatic anti-sticking rubber breaker machine. It includes a housing, a motor fixedly connected to the outer wall of the housing, a rotating shaft fixedly connected to the output end of the motor, and an end of the rotating shaft away from the motor movably connected to the inner wall of the housing. A connecting column is fixedly connected to the outer surface of the rotating shaft, and a crushing roller is fixedly connected to the end of the connecting column away from the rotating shaft. A cooling chamber is formed between the rotating shaft and the crushing roller. Multiple side plates are movably connected to the outer surface of the rotating shaft, located on the left and right sides of the crushing roller. A connecting pipe is fixedly connected to the surface of each side plate, and the interior of the connecting pipe communicates with the cooling chamber. This utility model solves the problem that rubber easily sticks to the surface of the equipment during the processing of waste rubber due to high temperature, high pressure, or material properties, affecting production efficiency and product quality.
Owner:ZHANGJIAGANG DONGXIN RUBBER & PLASTIC PROD CO LTD

Process for the preparation of reclaimed rubber with inhibition of excessive chain scission

PendingCN122445055AChain scissionWaste rubber
The application discloses a kind of inhibiting main chain excessive cracking's regenerated rubber preparation process, belongs to waste rubber regeneration technical field.The process whole process normal pressure operation, 22 mesh-26 mesh vulcanized rubber powder, conventional softener, zinc soap type activator are mixed according to proportion, through high-speed stirring self-friction temperature to 154 DEG C-155 DEG C, at 90 DEG C, 148 DEG C twice fixed point adding special auxiliary, feeding ratio is 4:6-6:4, frequency conversion control speed reaction 10-13min, selective rupture sulfur-carbon bond and inhibit excessive cracking of rubber main chain.Subsequently at 120 DEG C-130 DEG C low-speed constant-temperature reaction is completed structure reorganization, after cooling, tail gas environmental protection treatment obtains finished product.The application uses conventional raw material to replace high-price environmental protection raw material, process low energy consumption, low pollution, and the prepared regenerated rubber rubber hydrocarbon content is high, and physical performance and environmental protection index are significantly better than traditional process.
Owner:QUZHOU COUNTRY YINCHANG TYRE FANXIN CO LTD

Method for combined removal of chlorine and heavy metals from flue gas of coal and biomass coupled combustion

ActiveCN117463149BCombustionFlue gas
The application discloses a method for removing chlorine and heavy metals in coal-biomass coupled combustion flue gas, comprising the following steps: crushing and screening waste rubber, pyrolyzing to obtain tire coke; spraying the tire coke into the flue of the coal-biomass coupled combustion flue gas, and the spraying position is located upstream of the electrostatic precipitator; at the same time, low-temperature plasma is applied to the flue gas with the tire coke, and the application time of the low-temperature plasma is 1-5s; after the treated flue gas enters the electrostatic precipitator for dust removal, the heavy metals and chlorine-containing gas in the flue gas are removed. The tire coke is sprayed into the flue before the electrostatic precipitator, combined with the ionization of the low-temperature plasma, the chlorine-containing gas is decomposed and converted, and efficient removal of chlorine is realized. The tire coke has a catalytic effect, can promote the ionization and decomposition of more chlorine-containing gas, the free radicals generated by ionization can modify the tire coke, improve the mercury removal performance, and realize efficient and synergistic removal of chlorine and mercury in the biomass blending combustion flue gas.
Owner:SHANDONG UNIV

Low-carbon high-toughness ultra-thin surface material, preparation method and application thereof

PendingCN122277156AFiberPolyolefin
This invention relates to the field of road engineering construction technology, specifically disclosing a low-carbon, high-toughness, ultra-thin overlay material, its preparation method, and its application. The raw material components of the low-carbon, high-toughness, ultra-thin overlay material include base asphalt, waste rubber powder, waste polyolefin plastics, steel slag powder, waste ceramic fine aggregate, basalt aggregate, modified red mud powder, composite fibers, compatibilizer, and anti-stripping agent; wherein the composite fibers include alkalized straw fibers and granular lignin fibers. The ultra-thin overlay material obtained by this invention exhibits excellent rutting resistance, crack resistance, and anti-stripping properties. Furthermore, the low-carbon, high-toughness, ultra-thin overlay material makes extensive use of industrial solid waste resources such as waste rubber, recycled plastics, steel slag, waste ceramics, and red mud, thereby achieving low-carbon and resource-based utilization of road maintenance materials, possessing significant environmental benefits and engineering application value.
Owner:CHECC HIGHWAY MAINTENANCE & TEST TECH CO LTD +2

Modified high modulus asphalt based on waste rubber powder and preparation method and application thereof

This application belongs to the field of modified asphalt technology, specifically relating to a modified asphalt, its preparation method, and its application. This application involves preparing a compatibilizer by reacting drying oil or drying oleate with styrene via a free radical reaction. The compatibilizer is then compounded with asphalt and waste rubber powder to prepare a high-modulus modified asphalt. The modified asphalt exhibits a higher complex modulus G at high temperatures. * The lower rutting factor and phase angle indicate superior resistance to deformation at high temperatures, while also demonstrating satisfactory storage stability and low-temperature crack resistance. Furthermore, the compatibilizer utilizes bio-based drying oil, which is compounded with waste tire rubber powder, achieving dual resource utilization of biomass resources and waste rubber solid waste, thus reducing carbon emissions and aligning with the green development direction of road construction materials.
Owner:内蒙古交通集团有限公司

Method for preparing platinum-iron-carbon catalyst by using waste rubber powder, and platinum-iron-carbon catalyst and use thereof

PCT designated stageWO2026107897A1Cell electrodesCatalyst activation/preparationPlatinum saltsPtru catalyst
The present application relates to the technical fields of fossil resource recycling and fuel cell catalysts, and particularly to a method for preparing a platinum-iron-carbon catalyst by using waste rubber powder, and a platinum-iron-carbon catalyst and a use thereof. The method in the present application comprises: performing pyrolysis treatment on first waste rubber powder to obtain pyrolytic carbon; mixing the pyrolytic carbon with metal salts, a complexing agent, and water to obtain a first mixture, wherein the metal salts include a platinum salt and an iron salt; heating the first mixture under stirring, so as to obtain a sol; drying the sol and then calcining same to obtain a catalyst precursor; mixing second waste rubber powder with the catalyst precursor to obtain a second mixture; and performing microwave radiation treatment on the second mixture to obtain a platinum-iron-carbon catalyst. The technical solution of the present application provides a simple and low-cost method for preparing a highly active platinum-iron-carbon catalyst, and also realizes high-value recycling of waste rubber.
Owner:NATIONAL INSTITUTE OF GUANGDONG ADVANCED ENERGY STORAGE CO LTD

Solid waste-based polyurethane rubber modified asphalt, preparation method and application thereof

PendingCN122326009APolymer sciencePolyol
The present application relates to the technical field of modified asphalt, and particularly relates to a solid waste based polyurethane rubber modified asphalt, a preparation method and application thereof. The method comprises the following steps: obtaining modified rubber powder by pretreating, catalytic regeneration and oxidative modification of waste rubber powder; obtaining non-capped solid waste based polyurethane prepolymer by reacting the modified rubber powder with bio-based polyol, isocyanate and stabilizer; simultaneously preparing terminal blended rubber asphalt by shearing matrix asphalt and waste rubber powder; and finally obtaining solid waste based polyurethane rubber modified asphalt by shearing and mixing the prepolymer and the terminal blended rubber asphalt. The present application utilizes catalytic regeneration and oxidative modification to synergistically treat waste rubber powder, and combines bio-based polyol to construct non-capped polyurethane prepolymer. After being combined with terminal blended rubber asphalt, a stable crosslinking network is formed. The modified asphalt retains excellent storage stability and construction workability, improves high-temperature anti-rutting performance and anti-aging performance, and realizes high-value utilization of solid waste resources.
Owner:WUHAN UNIV OF TECH

Carbon material and cobalt atom composite catalyst, and preparation method and application thereof

PendingCN122314930APtru catalystFuel cells
This invention discloses a carbon material and a cobalt atom composite catalyst, its preparation method, and its application, belonging to the field of chemical material preparation technology. First, waste rubber powder is pretreated at low temperature under an inert atmosphere, mixed with an equal mass of activator, and then activated at high temperature. After acid washing, water washing, and drying, waste rubber-derived carbon is obtained. Then, this derived carbon is mixed with a carbon-based conductive material, combined with a cobalt complex, and subjected to liquid-phase ultrasonic dispersion and solvent evaporation. Finally, the composite catalyst is obtained by heat preservation under argon protection. This invention adopts a "composite matrix + molecular anchoring" strategy, utilizing the carbon-based conductive material to optimize the carrier porosity and conductivity, and using the spatial confinement effect of the cobalt complex to inhibit metal aggregation, forming high-density Co-N-C active sites in situ. It possesses both low cost and high catalytic activity, and can be effectively applied to the oxygen reduction reaction in fuel cells, possessing both solid waste resource utilization and energy catalysis value.
Owner:DONGGUAN UNIV OF TECH

Anti-aging ultra-thin surface material and preparation method and application thereof

PendingCN122277155ARoad engineeringWaste rubber
This invention relates to the field of road engineering construction technology, specifically disclosing an anti-aging ultrathin overlay material, its preparation method, and its application. The invention provides an anti-aging ultrathin overlay material whose raw material components include base asphalt, waste rubber powder, waste plastics, steel slag powder, wear-resistant aggregate, waste oil, algae-based biochar, compatibilizer, and anti-stripping agent. This invention uses base asphalt as the continuous phase, and through the synergistic effect with waste rubber powder, waste plastics, and waste oil, constructs a high-viscosity, high-elasticity composite binder. Simultaneously, steel slag powder and algae-based biochar are introduced to form an anti-aging and shear-resistant filler system, which, together with the wear-resistant aggregate, constitutes a highly interlocked skeleton structure. This structure endows the ultrathin overlay material with excellent anti-aging properties, thereby overcoming the shortcomings of existing technologies.
Owner:CHINA HIGHWAY ENG CONSULTING GRP CO LTD +2

A waste glue collecting groove for cleaning residual sealant

The utility model provides a kind of jointing agent excess material cleaning waste rubber collecting groove, it is related to jointing agent excess material cleaning technical field, including collecting assembly, collecting assembly includes the bottom plate of installation in the side surface of mounting seat, the top of bottom plate is equipped with first guide slot and chute, the side surface of bottom plate is provided with protective shell, by setting bottom plate, to be able to support mounting seat, by the chute and first guide slot cooperation of being equipped in the top of bottom plate, to be able to be flattened while guiding excess material into the inner cavity of protective shell to jointing agent, to be able to collect excess material, effectively improve work efficiency, without secondary collection cleaning, avoid the phenomenon that hardening appears in air in jointing agent, by setting protective shell, to be able to avoid the situation that excess material appears overflow.
Owner:JINHUA YITU NEW MATERIALS CO LTD

Low-temperature-resistant reclaimed rubber composite material and preparation method thereof

PendingCN122445130ARubber materialAntioxidant
The application belongs to the technical field of rubber materials, and particularly relates to a low-temperature-resistant reclaimed rubber composite material and a preparation method thereof; aiming at the problem that current reclaimed rubber composite materials are prone to brittle failure at the interface at low temperature; the application performs surface activation treatment on waste tire rubber powder by plasma, and introduces a flexible monomer containing an epoxy group to graft and modify the surface layer of the rubber powder; an epoxidized butadiene rubber matrix sizing material is blended with white carbon black and the like, and part of a crosslinking agent is added to perform pre-crosslinking, so as to build a "filler-matrix" dynamic network; subsequently, the surface-activated reclaimed rubber is mixed with the pre-crosslinked matrix, a remaining crosslinking agent and an antioxidant and the like, is dynamically vulcanized and is molded into a second heavy matrix-reclaimed rubber crosslinking network, so that the waste rubber powder and the matrix rubber are closely bonded and stress is effectively transmitted, thereby excellent low-temperature anti-brittle cracking performance is given to the composite material.
Owner:HUBEI KAILIANG NEW MATERIAL TECH CO LTD

Composite modified rubber asphalt as well as preparation method and mixture thereof

The invention relates to the technical field of road engineering, in particular to composite modified rubber asphalt as well as a preparation method and a mixture thereof, in the composite modified rubber asphalt provided by the invention, an SBS modifier, waste rubber powder and ultrafine natural asphalt powder are uniformly dispersed in road petroleum asphalt to form a three-dimensional network structure and a blending system. According to the present invention, by using the flexibility of the SBS modifier, the high viscoelasticity of the waste rubber powder, and the high softening point and the low temperature sensitivity of the ultrafine particle natural asphalt, the comprehensive pavement performance such as the high temperature, the low temperature, the modulus, the fatigue resistance, the water damage resistance and the like of the asphalt and the mixture thereof are effectively improved, and the ultrafine particle natural asphalt contains the mineral component so as to provide the good anti-stripping effect, the water damage resistance of the asphalt mixture is further improved.
Owner:CENT SOUTH UNIV +3

Low-temperature-resistant high-elastic rubber powder for asphalt and preparation method thereof

This invention discloses a low-temperature resistant high-elasticity rubber powder for asphalt and its preparation method, belonging to the technical field of rubber powder. Polyethylene glycol, 2,2,6,6-tetramethylpiperidine-1-oxy radical, sodium bromide, and sodium hypochlorite react to obtain carboxyl-terminated polyethylene glycol; the carboxyl-terminated polyethylene glycol and α-cyclodextrin are mixed and then reacted with adamantane, Carter's condensing agent, and N,N-diisopropylethylamine to obtain cyclodextrin-based polyrotaxane; the cyclodextrin-based polyrotaxane, sodium hydroxide, and 2,3-epoxypropyltrimethylammonium chloride react to obtain cationic cyclodextrin polyrotaxane; the cationic cyclodextrin polyrotaxane, lipoic acid, N,N'-dicyclohexylcarbodiimide, and 4-dimethylaminopyridine react to obtain disulfide-bonded polyrotaxane; the disulfide-bonded polyrotaxane is mixed and stirred with anhydrous ethanol and deionized water to obtain a modified polyrotaxane dispersion; waste rubber powder and the modified polyrotaxane dispersion are mixed and stirred to obtain high-elasticity rubber powder for asphalt.
Owner:BOXIN (SHANDONG) RUBBER TECHNOLOGY CO LTD

A method for preparing odor-neutralizing spray granules for sports fields

PendingCN122080512AEfficient removalreduce odorElastomerWaste rubber
This invention discloses a method for preparing odor-neutralizing spray granules for sports fields, relating to the technical field of odor-neutralizing spray granules. The steps are as follows: S1 Pre-treatment of waste rubber powder and thermoplastic elastomer, drying of inorganic fillers; S2 Mixing rubber powder and elastomer in an internal mixer, adding plasticizers and activators to prepare a base rubber compound; S3 Modification by adding odor-neutralizing and formaldehyde-removing agents under negative pressure; S4 Plasticizing and extruding the rubber compound into strips using a twin-screw extruder; S5 Water cooling followed by pelletizing to obtain a coarse product; S6 Screening to remove unqualified particles, followed by hot air drying and activated carbon adsorption for secondary odor neutralization to obtain the finished product. The spray granules prepared by this invention have a long-lasting odor-neutralizing effect, good environmental performance, and excellent elasticity, wear resistance, and adhesion strength; the process is highly controllable, the product has uniform particle size, good aging resistance, and is suitable for the spraying needs of various sports fields, while realizing the resource utilization of waste rubber, possessing both practical and environmental value.
Owner:CIXI SHANJIN POLYMER PLASTICS CO LTD

A method for making bricks from construction waste virgin aggregate and industrial waste composite aggregate

PendingCN122325155AAggregate (composite)Brick
This invention relates to the field of waste resource utilization technology, and in particular to a method for making bricks from virgin aggregates of construction waste and composite aggregates of industrial waste. The method involves nano-modifying the surface of waste rubber, transforming it from an inert filler into an active component; using an activator composed of sodium silicate, sodium carbonate, ammonium sulfate, and borax to optimize the gelation system reaction process; and pre-mixing the modified rubber particles, construction waste aggregates, fly ash, and activator to form a composite aggregate, which is then used to prepare lightweight bricks. This invention solves the technical problems of poor interfacial bonding between rubber and the inorganic matrix, low solid waste content, and difficulty in simultaneously achieving product strength and thermal insulation / sound insulation performance. The resulting bricks are lightweight, high-strength, low-shrinkage, and have excellent thermal insulation and sound insulation properties.
Owner:XIAN JIASHIJIE ENVIRONMENTAL PROTECTION TECH CO LTD

A waste rubber recycling device

ActiveCN224296245UPlastic recyclingWaste rubberThreshing
A kind of waste rubber recycling device, including receiving box and its inside upper side, and reciprocating movable paving mechanism, receiving box is also provided with heating mechanism;The upper portion of receiving box is laterally provided with strip-shaped sliding port on opposite sides, and the paving mechanism includes sliding frame between the two strip-shaped sliding ports, and the sliding frame is slidably connected with the sliding port by sliding table on both sides, two material guide rollers are arranged side by side in the sliding frame, and at least one material guide roller is drivingly connected with material guide drive machine capable of driving it to rotate, waste rubber after threshing can pass between the two material guide rollers, and is transported downward between the two material guide rollers under the action of material guide roller rotation, cooperates with the reciprocating movement of paving mechanism, so that waste rubber can be folded into S shape and spread into receiving box, prevent waste rubber from being stacked in the middle of receiving box, ensure that melting work of waste rubber can be more quickly and effectively completed by heating mechanism.
Owner:山东润安生物科技有限公司

Desulfurized-rubber-modified asphalt and preparation method therefor

PCT designated stageWO2026123462A1Building insulationsPolymer scienceWaste rubber
Disclosed in the present invention are a desulfurized-rubber-modified asphalt and a preparation method therefor. The asphalt of the present invention comprises, in parts by mass, 100 parts of petroleum asphalt, 25-35 parts of desulfurized rubber powder, 0.2-2 parts of an oxime-sulfonate-based modifier, and 0.5-3 parts of a modified artificial zeolite, wherein starting materials of the desulfurized rubber powder comprise waste rubber powder, calcium nitrate, aniline, 2,5-benzothiazole dithiol, p‑tolylmagnesium bromide, diphenyl sulfoxide, and trimethylchlorosilane in a mass ratio of 80-100:10-20:20-30:5-10:5-6:1:3-4. Further disclosed in the present invention is a specific preparation method for the desulfurized rubber powder. The asphalt of the present invention has simple components, improved properties and low blending temperature and is more convenient to use.
Owner:TAIHANG URBAN & RURAL CONSTR GRP CO LTD +2

Preparation method of natural rubber composite based on modified waste rubber powder recycling

ActiveCN119798800BWaste rubberPollutant emissions
The application provides a preparation method of natural rubber composite based on modified waste rubber powder recycling, and belongs to the technical field of waste rubber powder recycling and rubber mixing. The method comprises three main steps: first, a deep eutectic solvent is prepared by mixing a quaternary ammonium salt with a hydrogen bond donor and stirring until a uniform liquid is obtained; second, modified waste rubber powder is prepared by mixing the waste rubber powder with the deep eutectic solvent and performing ball milling treatment to break the sulfur cross-linking bonds and promote the reaction between the deep eutectic solvent and the rubber powder; and finally, a natural rubber composite is prepared by mixing natural rubber, small materials, carbon black and modified waste rubber powder in a banbury mixer to obtain the final product. The method reduces energy consumption and pollutant emissions, reduces production costs and broadens the application field of rubber composites. Through the use of modified waste rubber powder, the mechanical properties and dynamic mechanical properties of the composite material of the application are close to or reach the level of industrial carbon black / natural rubber composite, which has significant environmental and economic benefits.
Owner:QINGDAO UNIV OF SCI & TECH