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Organosilicon modified polyurethane polystyrene foam as well as preparation method and application thereof
PendingCN121780100AHigh elongation at breakGuaranteed tensile strengthPolyureas/polyurethane adhesivesPolymer sciencePolyethylene oxide
The invention belongs to the technical field of high polymer materials, and particularly relates to organic silicon modified polyurethane polystyrene foam as well as a preparation method and application thereof. The polystyrene foam comprises a component A and a component B, the component A is prepared from 40 to 60 parts of polyethylene oxide polyol, 25 to 35 parts of cashew nut shell oil polyol, 15 to 25 parts of castor oil modified polyol, 5 to 10 parts of modified resin A, 18 to 22 parts of flame retardant filler, 0.5 to 1.5 parts of foam stabilizer, 0.1 to 0.2 part of catalyst and 0.4 to 0.9 part of pure water; the modified resin A is organic silicon modified resin which contains active amido and has alkoxy at the tail end; and the component B comprises the following components in parts by weight: 75-85 parts of polymerized MDI and 15-25 parts of prepolymer A. According to the invention, an organic silicon chain segment is connected into a polyurethane network in a chemical bond manner, so that high tensile strength and high bonding strength are maintained while the elongation at break is improved, and the technical problem that the performance of the polyurethane polystyrene foam is difficult to consider at the same time is solved.
Owner:YANTAI DARBOND TECH
House building beam bottom reinforcing device and reinforcing method suitable for special-shaped section
ActiveCN115613847Bfast reinforcementTo achieve reinforcementBuilding repairsArchitectural engineeringJackscrew
The application relates to a reinforcing device for the bottom of a beam with a special-shaped section and a reinforcing method, the device comprises a supporting assembly and a frame assembly; the supporting assembly comprises an upwardly-inclined supporting rod, the top end of the supporting rod is connected to the lower surface of the frame assembly; the frame assembly comprises a stress plate and a plurality of U-shaped plates connected above the stress plate, the stress plate is arranged along the length direction of the beam, and the lower surface of the stress plate is fixedly connected with the top end of the supporting rod. The method can quickly reinforce the bottom of the beam, the supporting plate and the stress plate are only needed to be fixed, then the position of each U-shaped plate is adjusted by using a jackscrew, the bottom of the beam can be supported, the steps are compact, the implementation effect is good, the amount of used molds is reduced, and the construction cost is lowered.
Owner:THE CONSTR DECORATION OF CHINA CONSTR NO 7 ENG BUREAU
Buried track bed slab, track bed and construction method thereof
ActiveCN116516729Bbeautiful appearancereduce in quantityNon-rotating vibration suppressionBallastwayTrackwayArchitectural engineering
The invention provides a kind of buried track bed plate, track bed and its construction method, because with multiple buried vibration isolators, plate body is arranged on the basement by multiple rubber springs, adopts point support mode to cut off the rigid connection between track structure and basement structure, absorbs the impact energy when train runs, realizes vibration reduction and noise reduction.The construction method of the invention combines the concept of prefabricated building, can improve construction accuracy and effect, the plate body uses prefabricated plate, the mounting seat of buried vibration isolator is pre-buried below the plate body, during construction, only need to place the height adjusting washer and spring assembly containing rubber spring on the basement at the set vibration isolator position, then place the prefabricated plate on the basement, make the upper end of spring assembly embedded in the corresponding mounting seat, the construction of buried track bed plate can be completed, therefore, construction is convenient, short construction period, suitable for track construction on viaduct.
Owner:ZHEJIANG TIANTIE SCIENCE & TECHNOLOGY CO LTD
Rotary drilling all-in-one machine and using method
PendingCN121932106Aprecise positioningImprove adaptabilityDerricks/mastsDrilling drivesVehicle frameThree-dimensional space
The invention discloses a rotary drilling all-in-one machine and a using method, and belongs to the technical field of rotary drilling, the all-in-one machine comprises a frame, a rotary platform, a slewing bearing and a drilling mechanism, and the drilling mechanism is installed on the frame through the slewing bearing and can be driven by the rotary platform to integrally and horizontally rotate; the drilling mechanism comprises a first outer slide way capable of swinging in a pitching mode, a first inner slide way arranged in the first outer slide way in a sliding mode, a second outer slide way rotationally arranged at the front end of the first inner slide way, a second inner slide way arranged in the second outer slide way in a sliding mode and a pile hammer installed on the second inner slide way. And a plurality of driving devices for driving horizontal rotation, pitching swing, two-stage stretching and retracting, tail end swing and the pile hammer to work are further arranged. Through multi-degree-of-freedom cooperative movement, large-range and multi-angle accurate positioning and flexible operation of the pile hammer in a three-dimensional space are achieved, and the multi-degree-of-freedom pile hammer has the advantages of being compact in structure, good in rigidity, convenient and fast to operate, high in capacity of adapting to complex working conditions, high in construction efficiency and the like.
Owner:XUZHOU GAILI CONSTR MASCH CO LTD
Matt type epoxy sealant and preparation method thereof
PendingCN121780081AGood construction performanceImprove mechanical propertiesOrganic chemistryNon-macromolecular adhesive additives
The invention discloses a matte epoxy sealant and a preparation method thereof, and belongs to the field of epoxy adhesives. The sealant comprises a component A and a component B in a weight ratio of (2-10): 1, wherein the component A comprises 100 parts of bisphenol F epoxy resin, 3-8 parts of a diluent, 0.2-0.4 part of a defoaming agent, 4-10 parts of an epoxy modified eleostearic acid matte agent, 0.4-0.8 part of a black material and 20-50 parts of a filler; and the component B comprises 100 parts of an amine curing agent and 0.1-10 parts of a curing accelerator. The surface of the sealant is in a matte state after the sealant is cured, and the sealant is high in contrast ratio and good in display effect when being applied to LED screen potting, has good bonding strength and sealing protection performance, and can meet the use requirements of LED screen potting.
Owner:DONGGUAN XILES TECH CO LTD
A large-size rectangular jacking pipe jacking posture intelligent prediction and control method and system
This invention provides an intelligent prediction and control method for the jacking attitude of large-size rectangular pipe jacking. The method includes: defining the attitude control principle of the rectangular pipe jacking and determining the decision variables and control range of the actual jacking process; collecting real-time actual pipe jacking attitude parameters and multi-source heterogeneous data for prediction; based on the attitude control principle and control range of the decision variables, using a trained BO-GANDALF model to solve for the optimal decision variables; and realizing intelligent control of the pipe jacking attitude based on the optimal decision variables. The BO-GANDALF model processes the model input through a GFLU feature extraction module composed of stacked gated learning units, extracts optimized feature representations, and outputs a feature parameter contribution matrix. A feedforward neural network then outputs the predicted values of the rectangular pipe jacking attitude parameters based on the optimized feature representations and the feature parameter contribution matrix.
Owner:WUHAN UNIV +1
Anti-condensation air purification two-component coating and preparation method thereof
PendingCN121930700AHigh bonding strengthImprove crack resistanceStarch coatingsFoaming agentPolyvinyl alcohol
The invention provides an anti-condensation air purification two-component coating and a preparation method thereof, and belongs to the technical field of building coatings. The coating aims to overcome the defect that an existing interior wall coating is difficult to give consideration to environmental friendliness, functionality and physical properties. The coating is composed of a component A liquid material and a component B powder material. The component A comprises a self-made soil modifier prepared from polyvinyl alcohol resin, a treated leftover rice mixture and the like; the component B comprises a modified soil mixture which is treated by a soil foaming agent to form porous particles and borax serving as a cross-linking agent. Through cross-linking reaction of polyvinyl alcohol in the component A and borax in the component B, the bonding strength and cracking resistance of a coating film are improved. In addition, the coating system further comprises a photocatalyst, a physical adsorbent and a negative ion generation material. According to the present invention, by modifying the natural material and the two-component cross-linking system, the coating material is endowed with excellent anti-condensation performance, efficient air purification function and good thick coating cracking resistance on the basis of the environmental protection target.
Owner:湖南国彩新材料有限公司
Waterproof putty powder and preparation method thereof
The present application relates to the field of coating technology, in particular to a waterproof putty powder and a preparation method thereof. The waterproof putty powder comprises heavy calcium carbonate, quartz powder, Portland cement, calcium hydroxide, hydroxyethyl cellulose ether, hydrophilic fumed silica, hydrophobic fumed silica and a specific redispersible polymer powder. The polymer powder is prepared by spray drying of ethylene-vinyl acetate copolymer dispersion, polyvinyl alcohol, silane coupling agent, triethylamine and colloidal silica. The preparation method of the present application comprises first preparing the modified polymer powder, and then mixing it with the remaining dry powder components in steps. The construction method involves mixing with acidic water, standing for curing, and then scraping in two batches. Through the design of the core-shell structure of the polymer powder and the sequential addition of functional components, the waterproofness, workability, flexibility and bonding strength after immersion of the putty layer are synergistically improved.
Owner:GUIZHOU ANOTHER ANGLE DECORATION CO LTD
Pile foundation construction platform
ActiveCN224063404USolve floatingImprove construction efficiencyBulkheads/pilesArchitectural engineeringRebar
The utility model relates to the technical field of building construction, and provides a pile foundation construction platform. The pile foundation construction platform comprises a platform body and at least one limiting insertion plate, the platform body is provided with a construction hole, one end of each limiting insertion plate is arranged on the hole wall of the construction hole, and the other end of each limiting insertion plate extends towards the construction hole. The pile foundation construction platform is used for overcoming the defect that a reinforcement cage floats upwards in the prior art, the platform body can be arranged above a pile hole in a construction area, and the limiting insertion plate arranged in the construction hole of the platform body extends towards the construction hole. Therefore, the lower end face of the limiting inserting plate can abut against the upper end face of the reinforcement cage in the pile hole, and the problem that the reinforcement cage floats upwards can be solved.
Owner:CHINA RAILWAY 19TH BUREAU GRP EAST CHINA ENG CO LTD
Sprayed concrete and method of construction thereof
ActiveCN116903328Breduce adsorptionIncrease expansionBuilding material handlingShotcretePortland cement
The application relates to the technical field of building construction, and particularly discloses a shotcrete and a construction method thereof. A mixture of the shotcrete comprises the following components: Portland cement, fine aggregate, coarse aggregate, a quick-setting agent, steel fibers and premix, the premix is obtained by mixing diatomite, cyclodextrin, polycarboxylate superplasticizer and modified bentonite and then grinding and sieving, the modified bentonite is obtained by drying a mixture of bentonite and a modified liquid to a constant weight, the components of the modified liquid include polyethylene glycol and water, and the total amount of the polyethylene glycol in the modified liquid is 70-90% of the weight of the bentonite. The modified bentonite is prepared through adsorption between polyethylene glycol and bentonite, adsorption of the bentonite to the polycarboxylate superplasticizer is reduced, the total amount of the polycarboxylate superplasticizer actually playing a water-reducing role in the concrete mixture is increased, the fluidity of the concrete mixture is improved, and the construction performance of the shotcrete mixture is improved.
Owner:SHENZHEN BAOJINHUA CONCRETE CO LTD
Erosion-resistant, wear-resistant and crack-resistant ultra-high performance concrete and preparation method thereof
The invention relates to the technical field of building materials, and particularly discloses anti-erosion wear-resistant anti-crack ultra-high performance concrete and a preparation method thereof. According to the invention, through proper material design, inorganic fibers, high-strength wear-resistant polymer fibers, steel fibers, mineral admixture micro powder and aggregate are reasonably modified and designed to replace part of cement and silica fume to form an active cementing material; in addition, a special anti-erosion agent and an anti-abrasion nanometer material are added into the anti-erosion, wear-resistant and crack-resistant ultra-high-performance concrete, so that the phenomena of erosion wear, leakage and cracking of the ultra-high-performance concrete are reduced and avoided, and the concrete has very high fracture resistance and compressive strength; the phenomenon that concrete is prone to erosion, abrasion, leakage and cracking in severe environments such as high-speed water flow impact, wind erosion, high humidity and high salt, sand wind, debris flow and radiation can be solved, and the service life of the ultra-high performance concrete is prolonged.
Owner:李建永
A water-based fast-drying coating for casting and a preparation method thereof
ActiveCN117380904Bfast dryingImprove surface strengthFoundry mouldsFoundry coresSuspending AgentsHigh surface
The present application relates to a kind of water-based quick-drying coating for casting and its preparation method, the water-based quick-drying coating is prepared by the following raw materials according to weight percentage, refractory aggregate 60~80%, binder 3~10%, suspending agent solution 0.5~5%, quick-drying aid 0.2~1.0%, dispersing agent 0.2~1.0%, defoaming agent 0.1~1.0%, water-reducing agent 0.2~1.0%, carrier liquid 14~25%.The water-based casting coating of the present application has the characteristics of short drying time, small gas evolution, high surface strength.
Owner:SHENYANG UNIVERSITY OF TECHNOLOGY
Bridge wet joint construction formwork hoisting tool
ActiveCN224132565UPrevent rising and shakingincrease ascent speedBase supporting structuresBraking devices for hoisting equipmentsStructural engineeringControl theory
The utility model relates to a bridge wet joint construction template hoisting tool, which belongs to the technical field of bridge construction tools and comprises a first wheel carrier, a second wheel carrier, a first rope winding machine, a second rope winding machine, a first hoisting rope and a second hoisting rope, the first hoisting rope and the second hoisting rope are arranged in parallel, and the first rope winding machine and the second rope winding machine are respectively fixed on the first wheel carrier and the second wheel carrier. One end of the first lifting rope is detachably connected to the first wheel carrier; one end of the second lifting rope is detachably connected to the second wheel frame, and the other end of the second lifting rope is fixed to the winding part of the first rope winding machine. And the wet joint template is arranged on the first lifting rope and the second lifting rope. The first wheel frame and the second wheel frame stretch across the two adjacent beam plates, then the other end of the first lifting rope is fixed to the winding part of the second rope winding machine, the other end of the second lifting rope is fixed to the winding part of the first rope winding machine, manpower can be reduced, the wet joint formwork can be stably lifted, the lifting speed of the wet joint formwork is increased, and the working efficiency is improved. The construction period is shortened, and the hoisting construction effect of the wet joint formwork is improved.
Owner:NINGXIA ZHONGDA HIGHWAY CONSTR CO LTD
High-flexibility tear-resistant epoxy structural adhesive as well as preparation method and application thereof
PendingCN121991614AImprove flexural strengthHigh elongation at breakNon-macromolecular adhesive additivesEpoxy resin adhesivesPolymer scienceAdhesive
The invention provides a high-flexibility tear-resistant epoxy structural adhesive as well as a preparation method and application thereof. The epoxy structural adhesive is prepared by mixing a component A and a component B, on the basis of the total weight of the component A, the component A comprises the following components in percentage by weight: 34-70% of modified epoxy resin, 5-30% of bisphenol A type epoxy resin, 2-6% of benzyl alcohol, 8-15% of an epoxy reactive diluent, 0.2-1.5% of a defoaming agent, 1-5% of a thixotropic agent, 5-40% of filler and 1-4% of epoxy color paste; on the basis of the total weight of the component B, the component B comprises the following components in percentage by weight: 55-75% of polyether amine, 5-15% of bisphenol A epoxy resin, 5-10% of benzyl alcohol and 10-20% of dodecylphenol. The mixing mass ratio of the component A to the component B is (3.7-7): 1. The modified epoxy resin and the bisphenol A epoxy resin are compounded, and an optimized curing system is combined, so that the flexibility and the tear resistance of the structural adhesive are remarkably improved while the high strength of the epoxy resin is maintained, and the structural adhesive is suitable for structural bonding in the fields of buildings, automobiles, electronics and the like.
Owner:FUJIAN CANGSHENG CHEMICAL CO LTD
Emulsified asphalt colloid mill
ActiveCN224293436URealize the function of dynamic adjustmentAdjustable spacingGrain treatmentsThermodynamicsBitumen emulsion
The utility model discloses an emulsified asphalt colloid mill belongs to emulsified asphalt technical field, including drive assembly, through drive assembly each part cooperation grinding assembly each part, can realize to the spacing between multiple grinding block adjust, through the distance between grinding block and grinding shell inner wall adjustment, realize the function that grinds gap dynamic adjustment, adapt to different viscosity asphalt such as base asphalt and modified asphalt's grinding demand, make it reach better uniformity, and then promote emulsified asphalt's stability and construction performance, through the integrated setting of heating and feeding, the integrated design will heating element be embedded in the inside of sealing cap, such as setting electric heating block and heat conduction disc in sealing cap inner wall, reduce external pipeline and connecting piece, make equipment structure more compact, and the integrated structure makes heating element and feed inlet direct contact, and heat can be conducted to material entry area fast, avoids the loss of heat on the transmission path in traditional split type design because of the distance is farther.
Owner:HUANGGANG KAILUN NEW MATERIALS CO LTD
Low-expansibility water-based damping material and preparation method thereof
PendingCN121950170Aincrease dampingSmall coefficient of thermal expansionAnti-corrosive paintsPolyurea/polyurethane coatingsPolymer scienceSilanes
The invention relates to the technical field of water-based damping materials, and discloses a low-expansibility water-based damping material and a preparation method thereof.The low-expansibility water-based damping material is prepared from, by mass, 40-60 parts of water-based polyurethane-acrylate resin, 20-30 parts of water-based polyurethane-acrylate resin, 20-30 parts of water-based polyurethane-acrylate resin, 20-30 parts of water-based polyurethane-acrylate resin, 20- 10 to 20 parts of a silane coupling agent; 30-60 parts of a damping filler; 5-10 parts of a dispersant; 3-10 parts of a film forming agent; 0.3 to 1 part of a defoaming agent; and 0.5-3 parts of a thickening agent. The damping characteristic of the WPUA resin is organically combined with the interface enhancement and network crosslinking functions of the silane coupling agent, and the comprehensive high-performance water-based damping material with low expansion, high stability, strong adhesion and corrosion resistance is successfully prepared.
Owner:EFTEC (CHANGSHU) AUTOMOTIVE MATERIALS LTD
A tubing thread sealant for shallow coalbed methane wells, and a preparation method and application thereof
This application provides a tubing thread sealant for shallow coalbed methane wells, its preparation method, and its application, belonging to the field of oilfield development. The tubing thread sealant comprises: component A, component B, and component C; wherein, by weight, component A includes the following chemical components: 41-61 parts of polymer matrix, 15-23 parts of 5-methylthio-7-fluoro-1H-indene, and 23-37 parts of excipients; component B includes the following chemical components by weight: 80-90 parts of epoxy curing agent and 10-25 parts of epoxy curing accelerator; and component C is an additive. In component A, a polymer matrix is used as the matrix. By introducing molecularly designed active substances containing fluorine and sulfur elements, such as 5-methylthio-7-fluoro-1H-indene, the material combines the weather resistance and toughness of rubber while maintaining stable performance at high temperatures, making it less prone to deformation or failure.
Owner:PETROCHINA CO LTD +2
Bridge large cantilever flange plate reinforcing construction method
ActiveCN117569224BImprove construction qualityGood construction performanceBridge erection/assemblyBridge strengtheningIn vehicleBridge deck
The application discloses a bridge large cantilever flange plate reinforcing construction method, and solves the problem of bridge asphalt paving layer cracking caused by the negative bending moment phenomenon existing in the prior large cantilever flange plate reinforcing process. The method uses a jack, a steel wire rope and a steel rib plate to reinforce the old bridge after correction, applies a reverse force before paving concrete, makes the flange plate in a state of being upturned, and reinforces the steel fiber in the state, which is the first stage, wherein the concrete, the steel fiber and the steel rib plate are used to restore the overall stiffness of the bridge. Before asphalt paving, a counterweight is applied to simulate the state of the bridge deck with a vehicle load, and the counterweight is removed after asphalt paving is completed; under the combined action of the flange plate and the concrete, the steel fiber and the steel rib plate, the asphalt pavement is in a compressed state, thereby solving the problem of bridge asphalt paving layer cracking, and improving the construction quality and construction effect of the bridge deck.
Owner:HUNAN HUACHENG TESTING TECH CO LTD
A deep-buried tunnel groundwater seepage safety control system and method integrating discharge and injection
ActiveCN116838423BGuarantee normal constructionImprove utilization efficiencyDrainageTunnelsControl systemPipe
The application discloses a deep-buried tunnel underground water seepage safety control system and method, and relates to the technical field of tunnel construction safety control. The system comprises a drainage and injection integrated pipe, a water collecting and purifying system and a water injection and pressurizing system. The drainage and injection integrated pipe comprises a water injection pipe and multiple main body pipes. A first main body pipe penetrates a reinforced ring layer of a tunnel and communicates with surrounding rock outside the reinforced ring layer. One end of the first main body pipe close to the surrounding rock is a first section concentric flower pipe. One end of the first main body pipe close to the tunnel center is a solid pipe. The first main body pipe and a second main body pipe are water-stopping sealed through a first flange and a water-stopping structure. The water injection pipe at least penetrates the first main body pipe and the first flange. A last main body pipe with a top end away from the reinforced ring layer is a second section concentric flower pipe. The end of the first main body pipe communicates with the water collecting and purifying system. The end of the water injection pipe communicates with the water injection and pressurizing system. The water collecting and purifying system communicates with the water injection and pressurizing system.
Owner:CHANGJIANG RIVER SCI RES INST CHANGJIANG WATER RESOURCES COMMISSION +1
An electrically flexible protection tube
ActiveCN224438406UAdapt to the construction environmenthigh strengthStructural engineeringMechanical engineering
This utility model relates to the field of power protection pipe technology, and more particularly to a flexible power protection pipe. The flexible power protection pipe provided by this utility model solves the technical problem of poor flexibility in existing power protection pipes. A flexible power protection pipe includes a pipe body and a connector. By setting transverse reinforcing ribs, with gaps between the transverse and longitudinal reinforcing ribs, and with the transverse reinforcing ribs evenly distributed along the length of the pipe body, when geological conditions change, such as sinking or rising, the pipe body is required to bend to a certain extent. At this time, the gaps between the transverse and longitudinal reinforcing ribs allow the pipe body to bend to adapt to changes in geological conditions when the longitudinal reinforcing ribs undergo a certain bending deformation. Alternatively, during construction in curved sections, bending of the longitudinal reinforcing ribs can cause the pipe body to bend, effectively adapting to the construction environment of curved sections.
Owner:HANGZHOU DACHENG PIPES
A device for repairing cracks in a laminated board
The present application is suitable for the technical field of laminated slab repair, and provides a laminated slab crack repair device, which comprises a vehicle body and further comprises: a swing rotating assembly connected with the vehicle body through a lifting assembly, the lifting assembly being used for supporting and driving the swing rotating assembly to lift; a repair agent scraping assembly and a polishing assembly, the swing rotating assembly being provided with the repair agent scraping assembly and the polishing assembly, the swing rotating assembly being used for driving the repair agent scraping assembly to reciprocate, the repair agent scraping assembly being used for discharging repair agent and cooperating with the reciprocation to repair the laminated slab crack, and the swing rotating assembly being further used for driving the polishing assembly to rotate, so that the polishing assembly is used for polishing the repaired area after the repair agent scraping assembly is removed. The present application realizes the automatic operation of repair agent scraping and polishing, improves the repair quality, reduces manual operation, and significantly improves the construction efficiency and intelligent level.
Owner:陕西建工第八建设集团有限公司
A full-solid-waste alkali-activated cementitious material and a preparation method thereof
This invention discloses an all-solid-waste alkali-activated cementitious material and its preparation method, relating to the field of building materials technology. The cementitious material, by weight, comprises the following components: 300-400 parts blast furnace slag, 150-350 parts glass powder, 30-200 parts red brick powder, 40-70 parts desulfurized gypsum, 160-260 parts alkali activator, 10-30 parts sodium sulfate, 30-40 parts sodium tripolyphosphate, 0.4-5 parts silane coupling agent, and 200-400 parts water. This invention utilizes various industrial wastes such as blast furnace slag, glass powder, red brick powder, and desulfurized gypsum to prepare an all-solid-waste alkali-activated cementitious material. It possesses excellent mechanical properties, outstanding durability, and strong environmental adaptability, improving the utilization rate of industrial solid waste, reducing the use of traditional cementitious materials such as cement, lowering resource dependence and production costs, and promoting the low-carbon transformation of building materials.
Owner:GUANGZHOU UNIVERSITY +1
Cardanol modified polymerized MDI, polyurethane floor paint based on cardanol modified polymerized MDI and preparation method of polyurethane floor paint
PendingCN121949159ALong application periodExtend the stemCarbamic acid derivatives preparationOrganic compound preparationPolymer scienceGlycidyl ethers
The invention discloses anacardol modified polymerized MDI, which is prepared by the following method: carrying out hydrolysis reaction on anacardol glycidyl ether under an acidic condition to generate anacardol derived diol; and then reacting the cardanol-derived diol with the polymerized MDI at the temperature of 75-80 DEG C. The invention further discloses polyurethane floor paint based on cardanol modified polymerized MDI. The polyurethane floor paint is prepared from a component A and a component B, the component A is hydroxyl-containing resin or polyol, and the component B comprises cardanol modified polymerized MDI. The floor paint is prepared by reacting cardanol modified polymerized MDI with a hydroxyl-containing substance, a cardanol side chain introduced by the cardanol modified polymerized MDI plays roles of'molecular diluent 'and'space shielding', and the reaction speed and system viscosity of the floor paint are reduced, so that the floor paint has excellent construction performance and low bubble characteristic. The invention further discloses a preparation method of the polyurethane floor paint based on the cardanol modified polymerized MDI.
Owner:SOUTH CHINA AGRICULTURAL UNIVERSITY +1
Preparation method of silicon dioxide aerogel fireproof coating
The invention relates to the technical field of fireproof coatings, in particular to a preparation method of a silicon dioxide aerogel fireproof coating, which specifically comprises the following steps: S1, mixing and stirring a modified substrate emulsion and pentaerythritol to obtain a primary mixture; s2, adding silicon dioxide aerogel and acrylate emulsion into the primary mixed material; and S3, stirring the mixture obtained in the step S2, discharging, and standing and curing to obtain the silicon dioxide aerogel fireproof coating. The high-silicon fly ash is used for replacing a traditional silicon source, the raw material cost is greatly reduced, meanwhile, resource utilization of industrial solid waste is achieved, and green manufacturing and circular economy guidance are met. Through the collaborative design of the fly ash-based aerogel and the composite flame-retardant emulsion, light weight, high efficiency and low cost of the fireproof coating are realized, and the fireproof coating has good engineering application prospects and market competitiveness.
Owner:INNER MONGOLIA UNIV OF TECH
Adjustable auxiliary pouring tool for curb concrete backrest construction
ActiveCN224063231Usimple structureNovel and reasonable designRoads maintainenceArchitectural engineeringStructural engineering
Owner:YUNNAN CONSTR INVESTMENT HLDG GRP CO LTD
Adhesive for water-based EAU heat preservation and decoration integrated plate and preparation method of adhesive
PendingCN121780067AImprove environmental performanceLow VOCNon-macromolecular adhesive additivesInorganic adhesivesAdhesive cementPolymer science
The invention relates to the field of adhesives, and particularly discloses an adhesive for a water-based EAU heat preservation and decoration integrated plate and a preparation method of the adhesive. The adhesive for the water-based EAU heat preservation and decoration integrated plate comprises a component A and a component B, wherein the mass ratio of the component A to the component B is 1: (1.2-2); the component A is prepared from the following raw materials: water, acrylic polymer emulsion, nano calcium carbonate, silica powder, a cross-linking agent, a coalescing agent, hydroxyethyl cellulose ether, an anti-freezing agent, a dispersing agent, a defoaming agent, a thickening agent and a sterilizing agent; the component B is prepared from the following raw materials in percentage by mass: cement, quartz powder, quartz sand, a water reducing agent, a retarder and an early strength agent; the preparation method comprises the following steps: respectively preparing the component A and the component B, and uniformly mixing the component A and the component B according to the ratio. The adhesive for the water-based EAU heat preservation and decoration integrated plate has the advantages of being low in VOC, pollution and emission, safe and environmentally friendly.
Owner:SUZHOU DACHENG ENVIRONMENTAL PROTECTION NEW MATERIAL CO LTD
An airtight material for ultra-low energy consumption building masonry structures and its preparation method
This invention relates to an airtight material for ultra-low energy consumption masonry structures and its preparation method. The airtight material comprises, by weight, 15-25 parts of cenospheres, 10-20 parts of silica, 15-25 parts of hydroxyapatite, 5-15 parts of wollastonite fiber, 12-20 parts of bone glue, 4-8 parts of borax, and 10-16 parts of tertiary carbon redispersible latex powder. The airtight material provided by this invention exhibits superior performance indicators such as water vapor equivalent air layer thickness (Sd), tensile bond strength, water vapor permeability, and water absorption compared to similar plastering mortar products on the market. Furthermore, it is non-toxic, harmless, safe, and environmentally friendly. Compared to existing similar products, it offers advantages such as better workability, crack resistance, and thinner airtight layer thickness.
Owner:BEIJING BUILDING MATERIAL INSPECTION RES INST CO LT
Aqueous two-component polyurethane topcoat and use thereof
ActiveCN118755373BIncrease low shear viscosityprevent saggingThixotropic paintsAnti-corrosive paintsPolyurethane dispersionPolymer science
The present application relates to the technical field of vehicle coating, and discloses a water-based two-component polyurethane finish and application thereof. The water-based two-component polyurethane finish is prepared by compounding a hydroxyl-containing water-based dispersion and a water-based polycarbonate aliphatic anion polyurethane dispersion with a high glass transition temperature as a film-forming resin, and selectively adding a water-based aliphatic anion polyurethane dispersion with a low glass transition temperature. Through specific proportioning and synergistic effect of each component, the characteristics of different types of water-based resins are brought to the best state, so that the water-based two-component polyurethane finish has excellent leveling property, thixotropy, elasticity and interlayer adhesion, does not fly ash, has excellent mechanical properties and weather resistance, can be applied in a large area under high temperature, low temperature or high humidity environment, is well matched with a non-sanded intermediate coating, and the finish after coating does not need to be coated with a varnish, has excellent appearance gloss and vividness, and has high practical value and popularization value.
Owner:北京钰林化工有限公司
Reservoir concrete diaphragm wall construction method
PendingCN121853602ASave construction costsSave construction timeFoundation engineeringMarine site engineeringStructural engineeringAsphalt
The invention discloses a reservoir concrete diaphragm wall construction method. The reservoir concrete diaphragm wall construction method comprises the following steps that S1, soil replacement and compaction are conducted in a construction area of a diaphragm wall; s2, a guide groove is excavated in the construction area of the diaphragm wall, and a guide rail and a steel plate moving guide wall are installed; s3, downward construction is carried out along the movable guide wall to form a slotted hole; s4, the groove depth, the hole position deviation and the groove bottom deposition thickness are checked, meanwhile, slurry replacement is conducted in the groove holes, and fresh slurry is supplemented for wall fixing; s5, a mold is placed in the slotted hole, concrete is poured into the mold, and a hollow double-layer concrete diaphragm wall is formed; and S6, after the double-layer concrete anti-seepage wall is solidified, asphalt mixtures are injected into the hollow part of the double-layer concrete anti-seepage wall and gaps between the double-layer concrete anti-seepage wall and the groove walls. According to the method, structural decomposition or performance degradation of asphalt is avoided, and the waterproof performance of the diaphragm wall is improved; in addition, inclination or fracture of the guide grooves can be avoided, and the combination degree of the diaphragm wall and a construction area is enhanced.
Owner:张波 +1
A grouting device for cast-in-place pile foundation and a construction method for cast-in-place piles.
This invention provides a grouting device and a construction method for cast-in-place piles, belonging to the technical field of grouting devices. The device includes an outer grouting pipe and an inner grouting pipe: the outer and inner grouting pipes are coaxially arranged, with a pre-embedded part at one end of the outer grouting pipe, including a pipe head, a protective pipe, and a breakable component; the inner grouting pipe has multiple sets of second grout outlets at one end near the pre-embedded part, the pipe head is installed on the inner grouting pipe, and the two ends of the protective pipe are respectively sleeved on the inner grouting pipe and the pipe head, covering the second grout outlets for sealing and preventing blockage during pre-embedding; a first grouting cavity is formed between the outer and inner grouting pipes, and a second grouting cavity is formed inside the inner grouting pipe; multiple sets of first grout outlets are opened on the side wall of the outer grouting pipe; a grouting end cap is installed on the outer grouting pipe, with a detachable first plug and a second plug inside the grouting end cap, and a grouting port is opened on the grouting end cap; this improves the stability and reliability of the device during grouting construction and avoids rework due to channel blockage.
Owner:SHANXI CONSTR ENG CO LTD