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Preparation method of foaming thermal insulation ceramic decorative plate
PendingCN121824146Aimprove performancelow thermal conductivityCeramic materials productionCeramicwareTunnel kilnSodium bicarbonate
The invention discloses a preparation method of a foamed thermal-insulation ceramic decorative plate in the technical field of building decorative materials. The method comprises the following steps: carrying out ball milling, spray drying, granulating and ageing on raw materials such as ceramic waste and kaolin; mixing and dispersing the aerogel-hydrogel gradient core-shell structure composite modified material and ceramic particles, and sieving to obtain composite powder; compounding sodium bicarbonate and azodicarbonamide with a foaming agent, mixing the foaming agent with the composite powder, and adding a surfactant and a dispersing agent to adjust the viscosity so as to prepare expandable ceramic slurry; the slurry is injected into a mold and coated with low-temperature glaze, and stepped heating sintering is conducted through a tunnel kiln and comprises the steps of preheating glue discharging, primary foaming, secondary sintering, gradient cooling and the like. The thermal insulation performance, the mechanical strength, the weather resistance and the decoration performance are synergistically improved, and the product is low in heat conductivity coefficient, high in compressive strength, excellent in ultraviolet aging resistance, firm in decoration layer combination and suitable for building outer walls and other scenes.
Owner:HUNAN FUOU TECHNOLOGY CO LTD
Electromagnetic wire autohension performance data acquisition and intelligent analysis method
PendingCN121954112AAchieve closed-loop optimizationImprove bonding strength consistencyMeasurement devicesManufacturing computing systemsData acquisitionMulti source data
The invention discloses an electromagnetic wire self-adhesion performance data acquisition and intelligent analysis method, and relates to the technical field of data analysis. Multi-source data such as turn-to-turn gap, paint layer residual thickness, tension fluctuation and conduction state are synchronously acquired in the winding process; and analysis mechanisms such as a gap reduction rate, paint layer thinning distribution, a synchronous evolution track and a gap strength response curve are introduced, so that continuous modeling and quantitative characterization of the autohension performance evolution process are realized. Compared with the prior art which only depends on a single gap threshold value or a post mechanical test to judge the bonding performance, the method can be started from a complete physical chain from gap change to paint layer extrusion to metal contact to bonding failure, and the change trend of the bonding performance under different gap levels can be accurately revealed; and tension output is corrected in real time through a self-adaptive algorithm, closed-loop optimization of the bonding quality is achieved, and the product percent of pass and the production efficiency are improved.
Owner:GUANGDONG SUNTEK WIRE CO LTD
Bridge high bearing capacity joint optimization structure
ActiveCN224412302UImplement multi-directional transferinhibit expansionArchitectural engineeringStructural engineering
The utility model belongs to bridge building technical field discloses a kind of bridge high bearing capacity node optimization structure, including H-shaped steel, H-shaped steel is connected with link steel by reinforcing bolt and reinforcing nut, first hinged seat is equipped on link steel, transverse I-beam is installed on link steel, second hinged seat is equipped on transverse I-beam;Link member is connected between first hinged seat and second hinged seat, link member includes core energy consumption section, transition section and elastic connecting section, first hinged seat, second hinged seat and link member form triangular force transmission mechanism, core energy consumption section is equal cross section steel plate, two end elastic connecting sections are connected with first hinged seat and second hinged seat, top angle angle of triangular force transmission mechanism is 45 °-60 °, and the axis of first hinged seat and H-shaped steel web center line present 10 °-15 ° angle of inclusion.The utility model not only can realize the multidirectional transmission of node area force, but also can avoid the stiffness mutation problem caused by traditional welding, and can inhibit the expansion of microcrack.
Owner:HUAZHOU HEAVY IND CO LTD
Purification method for bamboo fiber reinforced natural polymer composite material
The present application relates to the technical field of bamboo fiber composite material, in particular to a purification preparation method of bamboo fiber reinforced natural polymer composite material. The bamboo raw material is crushed and treated by steam explosion to obtain primary bamboo fiber; the primary bamboo fiber is sequentially subjected to organic solvent dewaxing treatment and oxidation system selective delignification treatment to obtain purified bamboo fiber; the purified bamboo fiber is treated in a tannin acid solution to form a polyphenol interface layer on the surface thereof; and a solution containing polyvalent metal ions is added to the treated bamboo fiber to form a coordination cross-linking interface layer on the surface of the bamboo fiber. The present application constructs a stable interface layer between the fiber and the natural polymer matrix. The interface layer can effectively transfer stress, significantly improve the tensile strength, bending strength and shear strength of the composite material, and solve the problem of weak interface and easy delamination of traditional natural composite materials.
Owner:JINNADUO BIOENGINEERING (SHANDONG) CO LTD
Cold rolling process of aluminum-based silicon carbide coil stock
PendingCN121945554Ashort holding timeGuaranteed continuityMetal rolling arrangementsCarbide siliconTemperature control
The invention discloses a cold rolling process of an aluminum-based silicon carbide coil material. The cold rolling process comprises the following steps: carrying out surface treatment and coiling on a hot-rolled coil material; after the protective film is removed online, cold rolling-annealing I circulation is conducted, the single-pass rolling reduction of cold rolling is 5%-10%, the unit tension is 10%-30% of the yield strength of the material, the speed is smaller than or equal to 15 m / min, heat preservation is conducted for 1-2 h at the temperature of 430-480 DEG C in annealing I, and the heating and cooling rate is smaller than or equal to 10 DEG C / min; then edge cutting is carried out to remove edge cracks; the heating and cooling rate of the annealing II is smaller than or equal to 8 DEG C / min, and the heat preservation time is shorter than that of the annealing I; performing surface treatment after annealing II; and finally, finished product cold rolling is conducted, the single-pass rolling reduction is 5%-8%, and the speed is 5-10 m / min. By means of optimized multi-pass small rolling reduction rolling, staged temperature control annealing and tension control, the technical problem that the aluminum-based silicon carbide composite material is prone to cracking and strip breakage in the continuous cold rolling process is solved.
Owner:JIANGYIN KANGRUI MOLDING TECH CO LTD
High-melting-point graphite tube for elemental analysis
ActiveCN224109335UReduce memory effectreduced responseColor/spectral properties measurementsCarbon layerElement analysis
The utility model provides a high-melting-point graphite pipe for elemental analysis, which belongs to the technical field of spectral analysis and comprises a circular hollow graphite pipe main body and transverse support parts symmetrically arranged on two sides of the graphite pipe main body, an inner pyrolytic carbon layer is deposited on the inner wall of the graphite pipe, a porous structure is arranged in the inner pyrolytic carbon layer, and an outer compact pyrolytic carbon layer is further deposited on the surface of the inner pyrolytic carbon layer. Through the inner pyrolytic carbon layer and the outer compact pyrolytic carbon layer, in the high-temperature working process, the inner wall pyrolytic carbon layer can be selectively consumed to form a compact glassy carbon film, a self-adaptive protection mechanism enables the graphite tube to still keep stable analysis performance under extreme conditions, reaction or permeation of a detected element and graphite at high temperature is reduced, and the analysis accuracy of the graphite tube is improved. The phenomenon of cross contamination is reduced, the memory effect of the graphite pipe is reduced by 70%, but the memory effect of a traditional pyrolytic graphite pipe can only be reduced by 30-40%, and the graphite pipe is particularly suitable for analysis of high-melting-point elements.
Owner:NINGXIA BOXU LAB EQUIP CO LTD
Printing carrier plate and photovoltaic cell
ActiveCN224240633Ureduce temperature gradientImprove thermal conductivityTransfer printingElectrical batteryMetal membrane
The utility model discloses a printing carrier plate and a photovoltaic cell, and belongs to the technical field of photovoltaic cells. The printing support plate comprises a support plate body and a film layer arranged on the surface of at least one side of the support plate body, and the film layer comprises at least one of a metal film layer and a polymer film layer; the printing carrier plate further comprises a groove array, and the groove array penetrates through the film layer and extends to the carrier plate body in the thickness direction of the printing carrier plate. According to the utility model, the quality of groove laser etching can be improved.
Owner:SHENZHEN AIPYANG LASER TECHNOLOGY CO LTD
A crack prevention device for highway bridges
ActiveCN224620418UEasy to assemble and disassembleConvenient for regular maintenance and replacement
Owner:庞建辉
Carbon fiber gauze, preparation method thereof and carbon fiber reinforced composite material
PendingCN121896830AEasy to fixSolve the problem of easy falling offCarbon fibresFiberPolymer science
The invention provides a carbon fiber gauze, a preparation method thereof and a carbon fiber reinforced composite material. The carbon fiber gauze comprises short carbon fibers and carbon nanotubes, wherein the carbon nanotubes are bonded to the short carbon fibers through a polymer adhesive; and the mass percent of the carbon nanotubes in the carbon fiber gauze is 1.8-18.6%. According to the carbon fiber gauze, chopped carbon fibers and carbon nanotubes are organically combined, and a unique multi-scale hierarchical toughening structure is constructed. When the carbon fiber gauze is used in a carbon fiber composite material, the chopped carbon fibers play a role in bridging and deflecting cracks among layers, so that the propagation of microcracks can be effectively inhibited. And the carbon nano tube absorbs energy in a resin-rich area at the crack tip of the carbon fiber composite material through mechanisms such as pulling out and breaking, so as to inhibit the generation of nano-scale cracks. In addition, the carbon nanotubes are adhered to the short carbon fibers through the polymer adhesive, so that the carbon nanotubes can be firmly fixed on the short carbon fibers, and the functional stability of the carbon fiber gauze or the carbon fiber composite material is ensured.
Owner:ZHONGFU SHENYING (SHANGHAI) TECH CO LTD
A method for improving postharvest resistance to black rot and maintaining quality of sweet potato tubers
PendingCN122074546Ainhibit expansionIncreased resistance to black spot diseaseFruit and vegetables preservationBiotechnologyPesticide residue
This invention discloses a method for improving the resistance to postharvest black spot disease in sweet potato tubers and maintaining their quality, belonging to the field of postharvest preservation technology for agricultural products. The method includes: selecting undamaged sweet potato tubers for callus treatment at room temperature for 48 hours, disinfecting with 1% sodium hypochlorite, rinsing with sterile water and air-drying, then soaking them in a 9.0 mmol / L benzothiadiazole (BTH) solution (containing 0.05% Tween 80) at room temperature for 60 minutes, removing them and air-drying them to complete the treatment. This invention induces the activation of the sweet potato tuber's own defense system through BTH, increasing the activity of key enzymes in phenylpropane metabolism, chitinase and other disease-resistant enzymes, promoting the accumulation of total phenols and lignin, maintaining cell membrane integrity, inhibiting starch degradation and abnormal increase in soluble sugars. Under storage conditions of 28±1℃ and 80-85%RH, it can significantly inhibit the expansion of black spot disease lesions and extend the storage period to more than 25 days. This method has no pesticide residues, is unlikely to cause pathogen resistance, is environmentally friendly, simple to operate, and cost-controllable, and is suitable for large-scale postharvest preservation of sweet potato tubers.
Owner:ZHEJIANG FORESTRY UNIVERSITY
High-performance vitrified microsphere composite polystyrene particle heat-insulation board and preparation method thereof
This invention discloses a high-performance vitrified microsphere composite polystyrene particle insulation board and its preparation method, comprising the following steps: premixing hydrophobic vitrified microspheres and expandable polystyrene particles coated with expanded graphite at a mass ratio of (2.5~4):1 to obtain composite lightweight aggregate. The insulation board prepared by this invention, with a dry density of only 184-193 kg / m³, exhibits a compressive strength as high as 0.275-0.302 MPa, significantly superior to traditional inorganic insulation boards (0.15-0.25 MPa) and organic insulation boards (0.10-0.15 MPa); its thermal conductivity is as low as 0.034-0.041 W / (m·K), and its insulation efficiency is more than 40% higher than that of traditional inorganic materials, while also possessing Class A fire safety performance; furthermore, the process is simple and controllable, with an industrial solid waste utilization rate of up to 70%, demonstrating significant economic benefits and environmental value, and possessing broad prospects for widespread application.
Owner:CHINA RAILWAY TENTH GRP CONSTR ENG CO LTD +1
High-strength self-supporting polypyrrole nanoarray and preparation method and application thereof
The application belongs to the technical field of polymer preparation, and particularly relates to a high-strength self-supporting polypyrrole nano array and a preparation method and application thereof. The preparation method comprises the following steps: (1) first, dispersing a hydroxypropyl-beta-cyclodextrin and polyethylene glycol aqueous solution onto an ice surface, and then adding a pyrrole monomer to form a dispersion liquid; (2) adding an acid solution containing an oxidizing agent to the dispersion liquid, and obtaining the high-strength self-supporting polypyrrole nano array after reaction. The application directly uses a macroscopic ice block as a hard template for polypyrrole preparation, and introduces a cyclic molecule hydroxypropyl-beta-cyclodextrin with hydrophilic and hydrophobic dual functions and polyethylene glycol with a linear polymer chain as an array growth aid, so that a high-strength polypyrrole nano sheet array with a self-supporting structure is prepared through a one-step polymerization method. The high-strength polypyrrole nano sheet array can be used as a conductive filler of polyurethane in the field of 3D printing technology, and greatly improves the mechanical properties and antistatic ability of products.
Owner:SUZHOU GANGRUITONG NANO MATERIALS TECH CO LTD
An industrial anti-corrosion coating and its preparation method
ActiveCN121450204BImprove mechanical propertiesinhibit expansionAnti-corrosive paintsEpoxy resin coatingsFirming agentMesoporous silica
This invention relates to the field of coatings, specifically to an industrial anti-corrosion coating and its preparation method. The coating comprises a film-forming resin, a curing agent, a solvent, and an anti-corrosion composite nanofiller. The anti-corrosion composite nanofiller has a three-layer structure: a core layer of mesoporous silica loaded with an organic corrosion inhibitor; a middle shell layer of in-situ grown amino-functionalized metal-organic framework material; and an outer layer of low surface energy formed by modification with a hydrophobic modifier.
Owner:LIAONING MAIQI NEW MATERIAL GRP CO LTD
Composite buffer structure for battery as well as preparation method and application of composite buffer structure
PendingCN122025961AImprove fatigue lifeplay a reinforcing roleSecondary cells manufactureCell component detailsElectrical batteryShape-memory alloy
The invention relates to the technical field of batteries, in particular to a composite buffer structure for a battery and a preparation method and application thereof. A composite buffer structure for a battery comprises a polymer matrix layer and a reinforcement phase located in the polymer matrix layer, the reinforcement phase comprises a shape memory alloy fiber layer, and the shape memory alloy fiber layer is of a three-dimensional network structure; and the volume fraction of the shape memory alloy fiber layer in the composite buffer structure for the battery is 10%-60%. According to the composite buffer structure for the battery, the polymer matrix layer serves as a continuous phase, the shape memory alloy fiber layer serves as a reinforcing phase, and the polymer matrix layer and the shape memory alloy fiber layer are mutually staggered in the polymer matrix layer to form a three-dimensional network structure; the shape memory alloy fiber layer with a proper volume fraction is adopted, can actively adapt to the volume change of a battery cell, shows superelasticity at the working temperature of the battery, provides high and stable recovery stress, and is excellent in fatigue resistance, so that long-term stable contact of a battery interface is effectively maintained.
Owner:CHINA FAW CO LTD
High-performance outdoor full-package wood-imitation composite board and preparation method thereof
PendingCN122216498A
The application discloses a kind of high-performance outdoor full package imitation wood composite board and preparation method thereof, relate to polyurethane composite board technical field, the full package imitation wood composite board includes base board, and the polyurethane material of setting in the lower surface and the four around of base board, and the resin material of setting in upper surface.Its preparation method includes the following steps: pouring polyurethane material in the silica gel mould after surface treatment, place base board, mould pressing, make the polyurethane material with wood texture around and lower surface of base board composite, obtain intermediate product A;Resin material is rolled on the upper surface of intermediate product A, and is dried, to obtain full package imitation wood composite board;The silica gel mould after surface treatment is prepared by transferring real solid wood board texture.
Owner:WINSIN MATERIALS INC
Chemically strengthened microcrystalline glass, preparation method thereof and electronic equipment
PendingCN121872676Ainhibit expansionHigh impact strengthCasings/cabinets/drawers detailsGlass reforming apparatusWeather resistanceCeramic
The embodiment of the invention provides chemically strengthened glass ceramics, strengthening layers are respectively formed on two opposite sides of the chemically strengthened glass ceramics, each strengthening layer sequentially comprises a potassium strengthening layer and a sodium strengthening layer from the surface of the chemically strengthened glass ceramics to the inside, the depth of the potassium strengthening layer is 0.01-5 microns, the depth of the sodium strengthening layer is greater than or equal to 0.1 t, and the thickness of the sodium strengthening layer is greater than or equal to 0.1 t. T is the thickness of the chemically strengthened microcrystalline glass. The chemically strengthened microcrystalline glass has excellent falling resistance, impact resistance and weather resistance, can be applied to electronic equipment, improves the reliability of the electronic equipment, prolongs the service life of the electronic equipment in a humid and hot environment, and finally improves the market competitiveness of the electronic equipment. The embodiment of the invention also provides electronic equipment comprising the chemically strengthened microcrystalline glass.
Owner:HUAWEI TECH CO LTD
Fractured rock mass reinforcing device
ActiveCN224107260Uprevent slidinginhibit expansionUnderground chambersTunnel liningScrew threadShear force
The utility model relates to a fractured rock mass reinforcing device, in particular to a fractured rock mass reinforcing device which comprises a cross plate, side frames are fixedly connected to the two sides of the cross plate, two anchor plates I are symmetrically installed on the cross plate in an attached mode, anchor plates II are hinged to the inner sides of the two anchor plates I, and the two anchor plates II are connected in a hinged mode. Screw holes are formed in the two ends of the two side frames. Sliding sleeves are fixedly connected to the front sides of the two anchor plates I, the two sliding sleeves are slidably connected to the left side and the right side of a cross plate correspondingly, long screws are connected to the two sliding sleeves in a threaded mode, and inserting holes allowing the long screws to be inserted are formed in the two sides of the cross plate correspondingly. The device has the beneficial effects that a three-dimensional supporting structure is formed in the rock seam, when the rock mass is subjected to shearing force, the device can bear part of shearing force, and the rock seam is prevented from further expanding and sliding relative to the rock mass.
Owner:TAIZHOU VOCATIONAL & TECHN COLLEGE +2
Al-zn alloy material and method for manufacturing the same
PendingCN122503710AIncrease volume fractionInhibit continuous precipitation
The present application relates to an Al-Zn alloy material and a preparation method thereof, the Al-Zn alloy material comprises the following components in percentage by weight: Zn 8-12 wt.%, Mg 2.8-3.2 wt.%, Cu 1.2-1.5 wt.%, Zr 0.1-0.2 wt.%, and the balance is Al. On the one hand, the high Zn content changes the nucleation and growth kinetics of the η' phase, and increases the volume fraction of intragranular precipitates. On the other hand, the Al3Zr dispersed phase formed by the Zr element effectively pins dislocations and grain boundaries, inhibits recrystallization and limits the segregation of solute atoms to grain boundaries, thereby significantly inhibiting the continuous precipitation of grain boundaries and the expansion of PFZ.
Owner:CHINA WEAPON SCI ACADEMY NINGBO BRANCH
Humidity-heat-resistant PEEK composite material and preparation method thereof
PendingCN121851678AExcellent heat and humidity resistanceImprove mechanical propertiesFiberCarbon fibers
The invention belongs to the technical field of composite materials, and provides a heat and humidity resistant PEEK composite material and a preparation method thereof, the heat and humidity resistant PEEK composite material comprises the following raw materials by weight: 85-110 parts of PEEK; 5 to 15 parts of polytetrafluoroethylene; 5 to 15 parts of carbon fiber; 5 to 10 parts of modified montmorillonite; 0.5 to 2 parts of a compatilizer; and 0.1 to 0.5 part of an antioxidant. The preparation method comprises the following steps: putting PEEK and polytetrafluoroethylene into a drying oven for drying, then adding the dried PEEK and polytetrafluoroethylene, carbon fibers, modified montmorillonite and an antioxidant into a high-speed mixer for mixing, and uniformly mixing to obtain a mixture; the preparation method comprises the following steps: mixing the raw materials, adding the mixture into a double-screw extruder, extruding and granulating, cooling, and drying to finally prepare the PEEK composite material, while maintaining excellent friction resistance and mechanical properties, the heat and humidity resistance is obviously improved, and the PEEK composite material has a wide application value.
Owner:安徽赛诺新材料科技有限公司
A high-sealing bellows based on ultrasound-assisted five-layer electrodeposition and its preparation method
PendingCN122082058AGuarantee the reliability of useFill or block microscopic poresCellsConstructions elementsUltrasonic vibrationAir tightness
This invention discloses a five-layer electrodeposited high-sealing corrugated pipe based on ultrasound assistance and its preparation method, belonging to the technical field of metal corrugated pipe manufacturing. It aims to solve the problem that in multi-layer electrodeposited corrugated pipes, it is difficult to effectively coordinate current density, surface quality, and interfacial bonding strength, leading to insufficient densification of the deposited layer, unstable interlayer bonding, poor wall thickness uniformity, and failure to meet airtightness standards, ultimately resulting in poor overall performance stability. This invention includes a five-layer composite structure in which the pipe wall is composed of alternating nickel-cobalt alloy and copper layers. Each layer of the five-layer composite structure undergoes ultrasonic vibration treatment during deposition. The corrugated pipe prepared by this invention has a uniform and dense deposited layer with good interlayer bonding. The five-layer alternating deposition layer composite structure not only achieves uniform stress transmission and dispersion, effectively delaying crack propagation and interfacial penetration, but also improves the uniformity of wall thickness distribution, enabling the corrugated pipe to exhibit higher structural stability and long-term reliability in a sealed environment.
Owner:NORTHEASTERN UNIV CHINA
Binding material, preparation method thereof and application of binding material in silica gel glass
PendingCN121950232AExcellent solvent solubilityHigh bonding strengthMacromolecular adhesive additivesEpoxy resin adhesivesPolymer sciencePolyamide
The invention belongs to the technical field of adhesives, and particularly relates to an adhesive material, a preparation method thereof and application of the adhesive material in silica gel glass. The preparation method of the binding material comprises the following steps: (1) reacting a diamino siloxane monomer, an amido-containing diamine monomer, other diamine monomers and a dianhydride monomer by adopting a step-by-step polymerization process to prepare polyamide acid; (2) carrying out chemical imidization reaction on the polyamide acid, and precipitating to obtain polyimide powder; and (3) mixing the polyimide powder, epoxy resin and a curing agent to obtain the binding material. According to the invention, diamine monomers such as a diamino siloxane monomer and an amido-containing diamine monomer are adopted as raw materials, polyimide is prepared through a step-by-step polymerization process, and introduction of a siloxane chain segment and an amido bond not only improves the solubility of polyimide, but also improves the compatibility and interface energy of polyimide and epoxy resin; and the bonding strength of the bonding material is improved.
Owner:淄博仟佰源家居用品有限公司
Cement-based composite material based on multistage toughening and intelligent repairing and preparation method thereof
The invention belongs to the technical field of building materials, and discloses a cement-based composite material based on multistage toughening and intelligent repairing and a preparation method thereof.The cement-based composite material comprises finished product dry powder, an additive and mixing water, and the finished product dry powder comprises, by mass, 400-500 parts of ordinary Portland cement, 50-100 parts of mineral powder and 20-60 parts of nano metakaolin; the invention relates to a water-based composite material which comprises the following components in parts by weight: 15-35 parts of epoxy modified redispersible latex powder, 1-5 parts of pre-water-absorbing SAP microspheres, 0.5-1.5 parts of PP fibers, 0.5-1.5 parts of PVA fibers, 800-900 parts of machine-made sand, 1-3 parts of surface-treated shape memory alloy short fibers and 3-8 parts of elastic polymer microspheres. The additives comprise a geopolymer prefabricated liquid, a water reducing agent, a defoaming agent and a retarder, and the mass ratio of the finished product dry powder to the geopolymer prefabricated liquid to the mixing water to the water reducing agent to the defoaming agent to the retarder is 100: (25-28): (8-10): (5-10): (1-3): (0.5-2). Compared with the existing material, the cement-based composite material provided by the invention has the characteristics of high toughness, impact resistance and low shrinkage, and also has an internal repair function.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
A rubber composition for a high abrasion resistant tubular conveyor belt and a method for producing the same
The application discloses a kind of high wear-resistant tubular conveying belt rubber composition and preparation method thereof, specifically related to rubber material technical field, the rubber composition includes rubber matrix, Ti3C2T x MXene nanosheet, epoxy soybean oil, bis (triethoxysilylpropyl) tetrasulfide, wear-responsive microcapsule, carbon black N134 and rubber processing aid. The wear-responsive microcapsule wall material is urea-formaldehyde resin, and the core material contains high-viscosity alkyl benzene synthetic oil and titanate coupling agent. The preparation method includes: preparing Ti3C2T x MXene nanosheet and performing double surface modification; preparing microcapsules; uniformly mixing by adopting three-stage mixing process, and obtaining by vulcanization. The application realizes the self-compensation effect of boundary lubrication and in-situ interface hybridization under wear conditions through the synergistic effect of Ti3C2T x MXene and microcapsule, significantly improves the wear resistance and slows down the performance decay, while having good mechanical properties and process adaptability.
Owner:SHANXI SHANLI BUNA RUBBER MASCH BELT CO LTD
A design method for a deep-sea pressure-resistant device composite material shell and application thereof
This invention discloses a design method for composite material shells of deep-sea pressure-resistant devices and its application. The design method selects four key parameters: initial out-of-roundness amplitude, wall thickness deviation coefficient, hybrid fiber ratio, and difference in elastic modulus between inner and outer fibers. Combining nonlinear finite element analysis and response surface regression techniques, a quantitative prediction model of nonlinear buckling load with respect to the above parameters is established. Based on this, the buckling resistance advantages and performance-cost marginal benefit relationship of hybrid ply configuration are systematically explained from the two dimensions of structural mechanics mechanism and engineering economy.
Owner:JIANGSU UNIV OF SCI & TECH +1
High pressure die casting motor rotor casting aluminum alloy and its preparation method
The application discloses a high-pressure die-casting motor rotor casting aluminum alloy and a preparation method thereof, and belongs to the technical field of motor rotor materials. The high-pressure die-casting motor rotor casting aluminum alloy comprises the following components in percentage by mass: Mg 0.75-0.85 wt%, Fe 0.15-0.25 wt%, Ti≤0.03 wt%, Ga≤0.03 wt%, Zn≤0.03 wt%, Cu≤0.03 wt%, Mn≤0.01 wt%, Si≤0.01 wt%, other impurities≤0.35 wt%, and the balance of Al. The type of elements and the percentage by mass of each element are specifically limited, the percentage by mass of Si is reduced, the influence of Si on the electrical conductivity of the aluminum alloy is reduced, the electrical conductivity of the aluminum alloy is improved to a certain extent, the percentage by mass of Mg and Fe is limited, Mg forms a solid solution in Al, Fe interacts with Al to form phases such as Al3Fe, and the strength and hardness of the aluminum alloy are improved, so that the balance between the mechanical properties and the electrical conductivity of the motor rotor casting aluminum alloy is achieved.
Owner:SHANDONG BOYUAN PRECISION MASCH CO LTD
Polymethyl methacrylate article and method of making the same
PendingCN122255645AGuaranteed light transmissionImprove the interface binding forcePolyesterPolymer science
The application provides a polymethyl methacrylate product and a preparation method thereof. The preparation method of the polymethyl methacrylate product comprises the following steps: S1. mixing a resin matrix, a toughening agent, an antioxidant and a light stabilizer to obtain a mixture; the resin matrix comprises a polymethyl methacrylate resin; the toughening agent comprises a core-shell structure toughening agent and a polyester-based toughening agent; the core-shell structure toughening agent comprises a core and a shell layer; the core comprises polybutyl acrylate, and the shell layer comprises polymethyl methacrylate; S2. melt blending, extruding and granulating the mixture, and drying, injection molding, cooling and annealing. In the application, the core-shell structure toughening agent and the polyester-based toughening agent can synergistically improve the toughening effect.
Owner:CHONGQING ZHIZAIFANG TECHNOLOGY CO LTD +1
A high-toughness steel strand and its preparation method
ActiveCN118546594BImprove toughnessinhibit expansionPolyether coatingsEpoxy resin coatingsPolymer sciencePower cable
This invention relates to the field of power cable technology, and proposes a high-toughness steel strand and its preparation method. The high-toughness steel strand includes bare stranded wire and an epoxy coating sprayed onto the surface of the bare stranded wire. The epoxy coating raw materials include the following components in parts by weight: 100 parts epoxy resin, 25-30 parts carboxylated ternary chloroform resin, 20-50 parts polyphenylene ether, 30-40 parts nano-calcium carbonate, 2-4 parts curing agent, and 1-3 parts degassing agent. This technical solution solves the problem of poor toughness of epoxy coatings on steel strands in related technologies.
Owner:WUHE XINGHUA COMM EQUIP CO LTD
Embedded visual transparent protection structure resistant to multiple impacts
This invention relates to an embedded, transparent protective structure resistant to repeated impacts. It comprises a transparent ceramic curved armor plate, a transparent fiber-reinforced skeleton, a polycarbonate curved backplate, an epoxy resin coating, and an STF shear-thickening coating. The polycarbonate curved backplate has a central groove with a concave bottom. Each polygonal unit of the transparent fiber-reinforced skeleton contains a transparent ceramic curved armor plate. The gaps between the transparent ceramic curved armor plates and the transparent fiber-reinforced skeleton are filled with the STF shear-thickening coating. The bottom of the overall structure formed by the transparent ceramic curved armor plates, the transparent fiber-reinforced skeleton, and the STF shear-thickening coating is a convex curved surface, and the upper part of the overall structure is also a convex curved surface coated with an epoxy resin coating. This invention uses segmented, interlocking fibers in the armor plates to inhibit the propagation of crack damage, ensuring that the protective capabilities and visibility of other areas are not affected after an impact. Combined with the function of the curved structure, the overall structure is embedded in the curved backplate, forming an embedded structure.
Owner:NANJING UNIV OF SCI & TECH
Potassium magnesium phosphate cement-based material with high compactness and high salt corrosion resistance and application of potassium magnesium phosphate cement-based material
The invention relates to the technical field of magnesium phosphate cement materials, and particularly discloses a magnesium potassium phosphate cement-based material with high compactness and high salt corrosion resistance and application of the magnesium potassium phosphate cement-based material. The magnesium potassium phosphate cement-based material is prepared from the following components in parts by weight: 30 to 40 parts of dead burned magnesium oxide, 15 to 20 parts of monopotassium phosphate, 3 to 5 parts of retarder, 0.01 to 0.03 part of crystalline phosphate, 30 to 40 parts of fine aggregate and 8 to 13 parts of mixing water. Wherein the molecular formula of the crystalline phosphate is KNaMg2 (PO4) 2.14 H2O. By introducing the crystalline phosphate in a special structural form, the hydration evolution path and the microstructure of the magnesium potassium phosphate cement-based material in a salt erosion environment are effectively improved, and the salt erosion resistance is remarkably improved.
Owner:UNIV OF JINAN
Preparation method of anti-cracking and anti-freezing fiber composite concrete
PendingCN121872707AAchieve anti-crack and anti-freeze effectsInhibit shrinkage cracksMonocomponent protein artificial filamentSolid waste managementFiberPolymer science
The invention discloses a preparation method of anti-crack and anti-freezing fiber composite concrete, and relates to the field of concrete. The preparation method comprises the following steps: immersing bionic spider silk into a microbial mineralization solution, adding a photoresponse nano material, and adjusting illumination, so that calcium carbonate crystals are arranged in a honeycomb shape on the surface of the spider silk, bionic spider silk fibers and microbial mineralization layers are alternately deposited, and a'fiber-mineralization layer-fiber 'sandwich structure is constructed. The structure cooperates with a spider silk spiral and honeycomb mineralization layer, the concrete interface strength is greatly improved, shrinkage cracks are effectively inhibited, microorganisms are activated and mineralized in the cracks to repair the cracks, and the concrete is endowed with high crack resistance and self-repairing capacity. Meanwhile, the self-made nano-composite fiber takes polyvinyl alcohol and ethylene glycol copolymer as main materials, polylactic acid micro-cavities containing anhydrous calcium chloride are connected to two ends of the self-made nano-composite fiber, and the freezing resistance of the concrete is improved by the hydrophilicity of the polyvinyl alcohol and the heat release of the anhydrous calcium chloride. The anti-cracking and anti-freezing fiber composite concrete prepared by the invention has the effects of high cracking resistance and high freezing resistance.
Owner:FOSHAN TIANWO BUILDING MATERIALS CO LTD