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Conotoxin-derived anticoagulant polypeptide Cb-13 and application thereof
InactiveCN119119226Areduce bleeding riskprolong clotting timePeptide/protein ingredientsFermentationThrombusBlood plasma
The invention provides conotoxin-derived anticoagulant polypeptide Cb-13 and application thereof, and belongs to the technical field of biological medicine. The invention provides an anticoagulant polypeptide Cb-13. The amino acid sequence of the anticoagulant polypeptide Cb-13 comprises SEQ ID No.1. The invention also provides a coding gene of the anticoagulant polypeptide Cb-13, and provides that the anticoagulant polypeptide Cb-13 does not have hemolytic activity and does not have cytotoxicity when the concentration is 400 [mu] M or below. The anticoagulant polypeptide Cb-13 disclosed by the invention has a prolonging effect on plasma recalcification and coagulation time, has an anticoagulant effect, has small influence on bleeding, and also has an obvious promoting effect on plasmin and uPa. Meanwhile, it is also proved that the anticoagulant polypeptide Cb-13 can inhibit thrombus formation, that is, the anticoagulant polypeptide Cb-13 has in-vivo and in-vitro fibrinolytic effect and anticoagulant effect, has small bleeding risk, and can be used as an antithrombotic or thrombolytic drug.
Owner:ANHUI UNIV +1
Low-carbon concrete material containing solid waste and preparation method of low-carbon concrete material
The invention discloses a low-carbon concrete material containing solid wastes and a preparation method of the low-carbon concrete material, and relates to the technical field of concrete materials. The concrete material is prepared from the following components in parts by weight: 520 to 660 parts of a cementing material, 1380 to 1650 parts of aggregate, 1.218 to 1.845 parts of an additive and 25 to 45 parts of other additives, specifically, the cementing material is prepared from 250 to 300 parts of cement, 120 to 150 parts of fly ash, 100 to 130 parts of slag powder, 20 to 30 parts of silica fume and 30 to 50 parts of metakaolin. A large amount of solid wastes are used in the formula, so that the pollution pressure on the environment is effectively reduced by utilizing the wastes; by reducing the use amount of the cement and replacing part of the cement with various solid wastes, the carbon emission in the concrete production process is effectively reduced, and the raw material cost is reduced.
Owner:NINGXIA XINFENGYI ENERGY SAVING TECH CO LTD
A water-resistant and impact-resistant potassium magnesium phosphate repair material and a preparation method thereof
The present application provides a water-resistant and impact-resistant potassium magnesium phosphate repair material, which belongs to the technical field of building materials. According to the mass fraction, the material includes: component A: 8-15 parts of acrylamide, 0.1-0.18 parts of initiator, 0.06-0.1 parts of cross-linking agent, 14-24 parts of solvent; component B: 50-90 parts of modified magnesium oxide, 25-30 parts of potassium dihydrogen phosphate, 1-5 parts of retarder, 0.4-1.2 parts of polyvinyl alcohol fiber; the modified magnesium oxide is obtained by treating magnesium oxide with water glass. The present invention not only improves the water resistance of potassium magnesium phosphate cement, but also optimizes the operability during the construction process. The prepared polymer-modified potassium magnesium phosphate repair material has high early strength and impact resistance, and can be widely used in highways, airport runways, military and other projects that require rapid repairs.
Owner:SHANDONG IRON GECKO BUILDING MATERIALS CO LTD
Mineral powder-red mud-desulfurized gypsum-based multi-source solid waste road grouting material as well as preparation method and application thereof
The invention discloses a mineral powder-red mud-desulfurized gypsum-based multi-source solid waste road grouting material as well as a preparation method and application thereof, and belongs to the technical field of solid waste utilization and road grouting reinforcement. The mineral powder-red mud-desulfurized gypsum-based multi-source solid waste road grouting material comprises a multi-source solid waste aggregate and 0.01-0.015 wt% of a water reducing agent mixed in the multi-source solid waste aggregate, wherein the multi-source solid waste aggregate is prepared from the following raw materials in percentage by weight: 40.5-43.5 wt% of red mud, 40.5-43.5 wt% of quick-hardening sulphoaluminate cement, 9-10 wt% of mineral powder and 3-10 wt% of desulfurized gypsum; the mass ratio of the red mud to the quick-hardening sulphoaluminate cement is 1: 1. The mineral powder-red mud-desulfurized gypsum-based multi-source solid waste road grouting material can be hydrated to generate spar with a supporting effect, so that the grouting material has high stone strength in an early stage and high stone strength stability in a later stage, and generated spar particles can interact with a water reducing agent; and meanwhile, the problem of stockpiling of contained solid wastes is effectively solved, and the preparation cost is greatly reduced.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Pressing device for processing aluminum honeycomb panel
ActiveCN222351109UReduce springbackprolong clotting timeFastening meansPressesAdhesive cementAluminum honeycomb
The utility model relates to the technical field of aluminum honeycomb panel processing, in particular to a pressing device for aluminum honeycomb panel processing, which comprises a lower pressing die and an upper pressing die which are used for pressing connection of aluminum honeycomb panels, a discharge port is arranged on one side of the bottom end of the lower pressing die, a push plate is arranged on the other side of the lower pressing die, and an air cylinder is arranged on the outer side of the push plate. A conveying belt is arranged at the end, located at the discharging port, of the lower pressing die and comprises an installation plate, two baffles are fixed to the installation plate, conveying rollers are arranged at the upper ends and the lower ends of the two baffles, and the distance between the conveying rollers at the upper ends and the conveying rollers at the lower ends is the same as the thickness of the aluminum honeycomb panel after compression joint. After an upper pressing die and a lower pressing die are used for carrying out hot pressing on an aluminum honeycomb plate, the aluminum honeycomb plate subjected to pressing connection is pushed into a conveying belt, an upper conveying roller and a lower conveying roller which are fixed in height are used for conveying the aluminum honeycomb plate, meanwhile, an aluminum honeycomb core and an aluminum alloy plate are continuously pressed for a period of time, and the solidification time of an adhesive is shortened through a fan; therefore, the springback phenomenon of the aluminum honeycomb panel after crimping is reduced.
Owner:CHANGZHOU XINBANG BOARD IND CO LTD
Springback-reducing admixture for sprayed concrete and preparation method thereof
The invention provides a springback-reducing admixture for sprayed concrete and a preparation method of the springback-reducing admixture, and relates to the technical field of concrete admixtures. The springback-reducing admixture for the sprayed concrete comprises the following raw materials in percentage by mass: 40-70% of a component A and 30-60% of a component B, the component A comprises the following raw materials in percentage by mass: 30%-50% of calcined kaolin, 10%-20% of light calcined magnesia and 40%-60% of semi-hydrated gypsum. And the component B comprises the following raw materials in percentage by mass: 60-90% of cement, 5-10% of modified rubber powder and 5-10% of cellulose. The springback-reducing admixture for sprayed concrete provided by the invention is applied to sprayed concrete and has relatively low springback rate and relatively high strength.
Owner:CHINA TIESIJU CIVIL ENGINEERING GROUP CO LTD +3
Preparation method of oil shale-based aggregate ultra-high performance concrete material
ActiveCN119285320Ahigh strengthImprove impermeabilitySolid waste managementFiberAggregate (composite)
The invention discloses a preparation method of an oil shale-based aggregate ultra-high performance concrete material, which comprises the following steps: (1) uniformly mixing oil shale slag, glass powder, lithium slag powder and magnesium oxide, sintering, cooling to room temperature after sintering, and crushing the sintered product to obtain an oil shale-based fine aggregate; (2) taking the following raw materials: a composite cementing material, the oil shale-based fine aggregate, fly ash, silica fume, modified ardealite powder, fibers, a water reducing agent, sodium hydroxide and / or potassium hydroxide; the composite cementing material is composed of Portland cement and mineral powder. The concrete material is obtained by uniformly mixing the raw materials, adding mixing water and uniformly stirring. According to the method disclosed by the invention, the problem that the strength and the impermeability of the ultra-high performance concrete material prepared by taking the oil shale residues as the fine aggregate are reduced is solved, and the problem that cement components of the ultra-high performance concrete material are wasted is relieved.
Owner:SHANDONG JUNHONG ENVIRONMENTAL PROTECTION TECH CO LTD
Concrete vibration forming device
ActiveCN222328552Uprolong clotting timeeasy to cleanAuxillary shaping apparatusCleaning using toolsTrackwayArchitectural engineering
The utility model provides a concrete vibration forming device, which relates to the technical field of concrete test equipment and comprises a concrete vibration table. Track columns are fixedly connected to the two sides of the water tank, a movable frame is slidably connected to the outer surfaces of the track columns, a sweeping scraping plate is fixedly connected to the lower end of the movable frame, and a connecting rod is fixed to the front end of the movable frame, and water in the water tank is stably sprayed out from one end of a spraying pipe by opening a water valve and adjusting water pressure through a pressure adjusting valve; concrete falling on the concrete vibration table is wetted, the solidification time of the concrete is prolonged, later cleaning is facilitated, when the left concrete needs to be removed, the concrete is scraped and moved by pushing the moving frame, and then the concrete is hung on one side of the concrete vibration table to complete cleaning work.
Owner:XINHE COUNTY DINGSHENG SHANG CONCRETE CO LTD
Composite delayed coagulation type magnesium phosphate cement and preparation method thereof
PendingCN119638363Aprolong clotting timeAlleviate the problem of a significant decrease in intensityHydration reactionMagnesium phosphate
The invention discloses composite delayed coagulation type magnesium phosphate cement and a preparation method thereof, and relates to the technical field of building materials, the composite delayed coagulation type magnesium phosphate cement comprises a dead burned magnesium oxide and mineral admixture mixture, phosphate, a composite retarder and glue-containing water, in the dead burned magnesium oxide and the mineral admixture, the mass ratio of dead burned magnesium oxide to the mineral admixture is 3: 2, and the mass ratio of phosphate to the composite retarder to the glue-containing water is 1: 1. The mass ratio of the dead burned magnesium oxide and mineral admixture mixture to the phosphate is 3: 1, the mass of the composite retarder is 7-24% of the mass of the dead burned magnesium oxide and mineral admixture mixture, and the water-binder ratio in the glue is 0.18-0.20. The preparation method comprises the steps of high-temperature pretreatment of the mineral admixture, metering and dry mixing of all the components and cement mixing. The attapulgite and the kaolin which are treated at high temperature are mixed with dead burned magnesium oxide, so that the heat release rate at the initial stage of a hydration reaction is reduced, the cement setting time is prolonged, meanwhile, micro holes and cracks in a cement matrix can be filled, the compactness of a magnesium phosphate matrix is improved, and finally the strengths at different ages are improved.
Owner:HEBEI UNIV OF ENG +1
Artificial blood vessel stent with anticoagulation performance and construction method of artificial blood vessel stent
ActiveCN119113225AWide variety of sourceslow costPharmaceutical containersMedical packagingCell adhesionPolyvinyl alcohol
The construction method comprises the following steps: performing decellularization treatment on a pig heart aorta blood vessel, compounding the treated pig heart aorta blood vessel with polyvinyl alcohol and methacryloylated gelatin to prepare a pre-gel solution, printing a designed model into a hollow tubular mold by using white resin through 3D printing, and preparing the hollow tubular mold into the artificial blood vessel stent with the anticoagulation performance. Injecting the pre-gel solution into a mold for cross-linking to obtain an artificial blood vessel stent with controllable shape and size, and finally loading an anticoagulant drug heparin on the prepared stent to obtain the heparin-loaded artificial blood vessel stent. Materials for preparing the pre-gel solution are selected, and advantage complementation of material functions can be achieved. The acellular matrix is beneficial to adhesion, proliferation and differentiation of cells; the composite polyvinyl alcohol and methacrylated gelatin improve the mechanical properties of the scaffold and improve the cell adhesion. Heparin is loaded on the artificial blood vessel stent to improve the anticoagulation performance of the stent and prevent thrombus. As an excellent biomedical material, the stent has a wide application prospect in the related fields of cardiovascular tissue engineering and biology.
Owner:DALIAN UNIV OF TECH
Bone cement hollow nail assembly
ActiveCN222623044Uprolong clotting timeImprove the effect of surgeryFastenersBone cementScrew thread
The utility model discloses a bone cement cannulated screw assembly which comprises a cannulated screw and an injector, the cannulated screw comprises a screw cap and a screw rod constructed to be of a hollow structure, the screw cap and the screw rod are integrally formed, an injection hole is formed in the screw cap, the injection hole is communicated with the hollow structure of the screw rod, threads are arranged on the screw rod, and a plurality of outflow holes are formed in the side face of the screw rod; the injector comprises a partition plate and an injection cylinder, the injection cylinder is detachably connected with the hollow nail, the hollow nail is screwed into the fracture position after the injection cylinder is connected with the hollow nail, an insertion groove is formed in the side wall of the injection cylinder, the partition plate slides in the insertion groove, and after the partition plate slides in the insertion groove in the first direction, the injection cylinder is partitioned to form a stirring groove. The bone cement stirring device has the function of rotating the hollow nail, can stir bone cement in the separated stirring grooves, can directly inject the bone cement into a fracture position, prolongs the solidification time of the bone cement, and improves the operation effect.
Owner:THE PEOPLES HOSPITAL WEIFANG CITY CN0
Potassium magnesium phosphate cement-based composite material with super early strength and super high performance and preparation method thereof
ActiveCN119263769ASignificant super early strength characteristicsMeet engineering needsSolid waste managementMagnesium phosphateMagnesium orthophosphate
The invention relates to a super-early-strength ultra-high-performance potassium magnesium phosphate cement-based composite material and a preparation method thereof.The super-early-strength ultra-high-performance potassium magnesium phosphate cement-based composite material (UHPMKPCC) takes dead burned magnesium oxide and monopotassium phosphate as cement raw materials, takes silica fume as one of cementing materials, and takes calcium carbonate as one of the cementing materials; wollastonite powder, metakaolin, fly ash, sodium dihydrogen phosphate and the like are used as auxiliary cementing materials, quartz sand is used as aggregate, and a composite retarder and a water reducing agent are adopted to jointly realize preparation and application of the UHPMKPCC with the ultra-low water-binder ratio. Compared with the existing ultra-high performance Portland cement-based material (UHPC) technology, the UHPMKPCC disclosed by the invention has the advantages of remarkable ultra-early strength mechanical property, low drying shrinkage and the like; compared with an existing ultrahigh-performance magnesium ammonium phosphate cement-based material technology, the UHPMKPCC has the advantages that the setting time can be effectively regulated and controlled, and no ammonia gas is released. The method can be applied to safe solidification treatment of radioactive nuclear waste in the fields of first-aid repair, rush building and reinforcement in the civil engineering field and safe treatment of nuclear waste.
Owner:TONGJI UNIV
Reinforcing steel bar sleeve grouting material for high-strength micro-expansion assembly type concrete structure
The invention discloses a reinforcing steel bar sleeve grouting material for a high-strength micro-expansion fabricated concrete structure. The reinforcing steel bar sleeve grouting material is prepared from the following raw materials in parts by weight: 735 to 795 parts of cement, 15 to 85 parts of silica fume, 80 to 90 parts of lithium slag powder, 9 to 36 parts of magnesium slag powder, 500 to 800 parts of quartz sand, 100 to 400 parts of basalt sand, 9 to 12.6 parts of a water reducing agent, 0.9 to 4.5 parts of a retarder, 0.9 to 4.5 parts of a reinforcing agent, 0.6 to 1.2 parts of a de-foaming agent, 0.6 to 1.2 parts of a suspension stabilizer, 0.1 to 0.3 part of a plastic expanding agent and 45 to 72 parts of a UEA expanding agent. The grouting material disclosed by the invention has the advantages of high strength, micro-expansion, good fluidity, no bleeding, no segregation and the like, and meets the use requirements of an assembled concrete structure.
Owner:SICHUAN INSITITUTE OF BUILDING RES +1
Toughening waterproof gypsum composition and preparation method thereof
PendingCN119263763AToughened withToughened waterproofingSolid waste managementCellulosePolymer science
The invention discloses a toughened waterproof gypsum composition and a preparation method thereof. The toughened waterproof gypsum composition comprises the following components in parts by weight: 80-250 parts of gypsum powder, 54-150 parts of heavy calcium carbonate powder, 60-95 parts of talcum powder, 75-175 parts of light calcium carbonate powder, 80-105 parts of ash calcium powder, 15-55 parts of melamine powder, 25-65 parts of cellulose, 35-85 parts of a retarder, 70-95 parts of a water repellent and 70-95 parts of a toughening agent. A proper amount of a water repellent and a flexibilizer are added in the preparation of the gypsum composition, the water repellent is organic silicon hydrophobic powder, and the organic silicon hydrophobic powder is ternary fine particles and is composed of a powder carrier, a colloid coating material and an organic silicon active component easy to disperse. The colloid wrapping material can stably preserve the active components in the powder and can be timely released after water is added, the dispersity of the organic silicon hydrophobic powder in water is good, and the hydrophobic performance of the material can be improved; and the flexibilizer is used for improving the brittleness of the gypsum and improving the impact resistance of the gypsum.
Owner:HEBEI HUIXIN YILONG NEW MATERIAL TECHNOLOGY CO LTD
Modified sludge incineration ash and application thereof
PendingCN119612998Areduce adverse effectsImprove compactnessSolid waste managementHydration reactionEnvironmental protection
The invention discloses modified sludge incineration ash and application thereof. The modified sludge incineration ash comprises the steps of alkali liquor dipping, centrifuging or filtering, drying, exciting agent adding and mortar utilization. According to the method, the adverse effect of phosphorus in the sludge incineration ash on the cement hydration reaction is avoided, the activity of the sludge incineration ash is improved, meanwhile, the mixing amount of the sludge incineration ash in mortar is increased, a way is provided for large-mixing-amount application of the sludge incineration ash in building materials, and the method has a wide application prospect.
Owner:SHANGHAI CEO ENVIRONMENTAL PROTECTION TECH CO LTD +1
Self-leveling dry-mixed mortar and application
PendingCN119569389Amaintain good performanceguaranteed performanceSolid waste managementLitterTropical monsoon climate
The invention provides self-leveling dry-mixed mortar and application. The self-leveling dry-mixed mortar is prepared from the following components in parts by weight: 378 to 399 parts of cement, 81 to 85.5 parts of coal ash, 81 to 85.5 parts of modified waste bentonite cat litter, 756 to 798 parts of fine aggregate, 27 to 27.8 parts of waste bentonite cat litter filter residue powder and 17.6 to 18.8 parts of additive. The treated waste bentonite cat litter is used in the self-leveling dry-mixed mortar, so that the self-leveling dry-mixed mortar has longer setting time and better water-retaining property, the problems of'fast drying 'and'water loss' caused by tropical monsoon climate are solved, and meanwhile, the waste bentonite cat litter is fully utilized.
Owner:ZHEJIANG YONGJIAN NEW MATERIALS TECH CO LTD
A method and apparatus for producing ceramic composite iron-based wear-resistant castings
PendingCN122076925Aimprove bindingprolong clotting timeFoundry mouldsFoundry coresCeramic compositeChemical plating
This invention relates to the field of ceramic composite metal casting technology, and discloses a method and apparatus for producing ceramic composite iron-based wear-resistant castings. The production method involves treating ceramic particles with decontamination, coarsening, sensitization, activation, and chemical plating to obtain modified ceramic particles; mixing and stirring the modified ceramic particles and a coating material to obtain a ceramic preform; fully heating the ceramic preform; then removing it and placing it into a mold cavity to obtain a mold; heating the mold in a tank; pouring molten iron after heating; and cooling after casting to obtain the ceramic composite iron-based wear-resistant casting. This invention also discloses a production apparatus for ceramic composite iron-based wear-resistant castings. This invention, employing the above-mentioned method and apparatus for producing ceramic composite iron-based wear-resistant castings, promotes the composite of ceramic and molten metal from a casting process perspective, ensuring that the molten metal can penetrate the fine pores of the ceramic preform, resulting in a good interface bonding between the high-chromium cast iron and ceramic particles, without unbonded or microscopic gaps.
Owner:HEBEI UNIV OF ENG +1
Circulating fluidized bed ash-based road base cementing material and preparation method thereof
This invention belongs to the field of industrial solid waste resource utilization technology, and relates to a circulating fluidized bed ash-based cementitious material for road base courses and its preparation method. The raw materials for the road base course cementitious material are composed of the following mass parts: 29-43 parts of circulating fluidized bed ash, 16-27 parts of ground blast furnace slag, 3-6 parts of silica fume, 7-15 parts of P.O42.5 silicate cement, 0.1-0.4 parts of activator, and 27-30 parts of water. The circulating fluidized bed ash is prepared by mixing circulating fluidized bed fly ash and slag in a mass ratio of (2-5):(5-10). This invention effectively alleviates the problems of fast setting time and shrinkage cracking of traditional road base course cementitious materials by utilizing the characteristics of micro-expansion and long hydration time of circulating fluidized bed ash. The advantage of this invention is that it promotes the large-scale utilization of circulating fluidized bed ash and contributes to carbon emission reduction in the road sector.
Owner:SHANXI UNIV
Steering-by-wire shell cover mold
ActiveCN222511311Uavoid defectsImprove surface qualityFoundry mouldsFoundry coresMechanical engineeringMaterials science
Owner:SENSUS PRECISION DIE CASTING YANGZHOU
Solid waste light slurry backfill material and recycling method
PendingCN119461992Ahigh strengthImprove stabilitySolid waste managementCeramicwareSlurryShield tunneling
The invention discloses a solid waste superfine powder grouting material for shield tunneling and a muck recycling method, and relates to the technical field of shield tunneling. The solid waste superfine powder grouting material for the shield comprises cement, fly ash, bentonite, a water reducing agent and shield muck serving as aggregate. The invention further discloses a muck recycling method based on the shield muck. The shield muck is shield muck generated in the tunneling process of a shield tunneling machine. Mixing the cement, the fly ash, the bentonite, the water reducing agent and the shield muck serving as the aggregate, stirring the mixture with water to form recycled slurry, and using the recycled slurry as a synchronous grouting material; the purposes of recycling the shield muck, reducing the use amount of field sandy soil and saving the cost are achieved.
Owner:HENAN KANGHUI CEMENT PROD CO LTD
Preparation method of lysine-tannic acid compound retarder and gypsum-based building material
ActiveCN121948861Aprolong clotting timelow mechanical strengthSolid waste managementPolyethylene glycolEthylic acid
The invention relates to the field of gypsum-based building materials, and particularly discloses a preparation method of a lysine-tannic acid compound retarder and a gypsum-based building material.The preparation method comprises the following steps that 1, tannic acid and copper acetate are added into water to be stirred, and a copper-tannic acid pre-coordination solution is obtained; then adding L-lysine into the mixture, and stirring for reaction to obtain precursor liquid after the reaction is completed; and (2) adding glyoxal into the precursor liquid for reaction, and then adding dialdehyde polyethylene glycol for continuous reaction to obtain the compound retarder. The gypsum-based building material comprises the following components: alpha-semi-hydrated gypsum, cement, slag powder, the lysine-tannic acid compound retarder, a water reducing agent and mixing water. The retarder provided by the invention not only has a good retarding effect on the gypsum-based building material, but also can improve the early strength of the gypsum-based building material, and effectively overcomes the contradictory problem of retarding and early strength.
Owner:UNIV OF JINAN
Use of plantain fruit extract in preparation of anticoagulant or antithrombotic drugs
PendingCN122272702AHas anti-inflammatory propertiesHas antioxidant propertiesPlatelet inhibitionFlavonoid
This invention relates to the field of biomedicine, specifically to the application of banana fruit extract in the preparation of anticoagulant or antithrombotic drugs. The banana fruit extract provided by this invention contains flavonoids, polyphenols, polysaccharides, hydroxyanthraquinones, triterpenoids, and other components. Flavonoids and polyphenols have been widely proven to have anti-inflammatory and antioxidant effects, which can synergistically enhance the anticoagulant effect. The high potassium content of banana fruit can indirectly improve vascular function by regulating sodium-potassium balance. The banana fruit extract provided by this invention can inhibit platelet production or promote platelet metabolism, prolong clotting time, and inhibit platelet aggregation. Its natural plant components interfere with platelet aggregation by inhibiting the production of thromboxane A2, achieving anticoagulant and antithrombotic effects. The mechanism of action of banana fruit extract differs from traditional anticoagulants such as heparin, reducing the risk of bleeding. Its natural component characteristics provide a direction for the development of novel plant-derived anticoagulant drugs.
Owner:GUANGXI XIUPEI KELING BIOTECHNOLOGY CO LTD
A kiln lining refractory material pumping system
ActiveCN115847624BImprove liquidityprolong clotting timeMixing operation control apparatusClay mixing apparatusThermodynamicsRefractory
The present invention discloses a kiln lining refractory material pumping system, which belongs to the technical field of refractory material pumping equipment. It is characterized in that it includes a workbench, on which a raw material storage bin, a feeding mechanism and a relay pumping mechanism are installed, and the raw material storage bin is connected to the relay pumping mechanism through the feeding mechanism; the raw material storage bin includes a main bin and several auxiliary bins; a retarder is arranged in one of the auxiliary bins; the rear end of the feed plate is connected to the feeding mechanism, and the feeding mechanism can mix the materials transported through the feed plate evenly and feed them into the relay pumping mechanism to realize relay pumping. The kiln lining refractory material pumping system described in the present invention can add a retarder when premixing the materials, and realize the on-site high-level construction operation of the refractory castable through sufficient stirring and multi-stage pumping.
Owner:SHANDONG YAOHUA REFRACTORY MATERIAL SCI & TECH CO LTD
Coating machine glue storage tank adopting heating circulation
ActiveCN222325611UExtension of timeImprove thermal conductivityLiquid surface applicatorsRotary stirring mixersInsulation layerHeating cycle
The utility model belongs to the technical field of equipment circulation, and particularly relates to a coating machine glue storage tank adopting heating circulation, which comprises a tank body, a base and a top cover are installed at the bottom end and the top end of the tank body respectively, a temperature sensor, an inductive switch and a water tank are fixedly installed at the upper end of the top cover, the temperature sensor is located at the upper end of the top cover and connected with the inductive switch through an induction line, and the inductive switch is connected with the water tank through a wire. An electric heating machine is installed at the top end of the water tank, an electric heating bar is synchronously installed at the bottom end of the electric heating machine, the electric heating bar penetrates through the top end of the water tank and extends into the water tank, and a water pipe is installed at the bottom end of the water tank and extends to a connector of a water pump in the water tank. A heat preservation layer is arranged on the periphery of the side wall of the annular layer. According to the glue storage tank, glue in the glue storage tank is heated in a water heating circulation mode, and convenience is improved.
Owner:YANTAI RUIFANG ELECTRONIC TECH CO LTD
Concrete additive with water reducing and retarding functions and concrete prepared from concrete additive
The invention discloses a concrete additive with water reducing and retarding functions and concrete prepared from the concrete additive, and belongs to the field of concrete admixtures, the additive is prepared from a water reducing agent, a retarder and a hydrophilic colloid according to the mass ratio of 1: 1: (1-5); the water reducing agent is a mixed component of a naphthalene sulfonate formaldehyde condensate and polycarboxylic acid, and the naphthalene sulfonate formaldehyde condensate and the polycarboxylic acid are mixed according to the mass percent of 2: 1; the hydrophilic colloid is modified agar; the additive prepared by the invention can effectively improve the overall water-reducing rate of concrete, so that the water-reducing rate can reach 38%; meanwhile, the setting time of the concrete is also prolonged, the flowability of the concrete is ensured, and the problem of difficult transportation caused by rapid setting after concrete production is avoided.
Owner:SHANXI XINYUHENG TECHNOLOGY BUILDING MATERIALS CO LTD
Factor xi antibodies and methods of use
The present invention relates to monoclonal antibodies and antigen binding fragments thereof that bind to human Factor XI and activated Factor XI ("Factor XIa"), and pharmaceutical compositions and methods of treatment comprising the same.
Owner:NOVARTIS AG
Composite magnesium cement and alkali-activated slag road surface rapid repair mortar and preparation method thereof
ActiveCN117800702BImprove water resistanceIncreased magnesium oxide contentMagnesium phosphateSilicic acid
The present invention belongs to the technical field of engineering building materials, and specifically relates to a road surface rapid repair mortar of composite magnesium cement and alkali-activated slag and a preparation method thereof; wherein the road surface rapid repair mortar comprises: dead-burned magnesium oxide, dipotassium hydrogen phosphate, disodium hydrogen phosphate, domestic waste incineration slag, nano-colloidal silica, fine aggregate, water, nano-cellulose and water reducer. The present invention utilizes the hydration intermediate product of magnesium phosphate gelling material to react with nano-colloidal silica to generate potassium silicate and sodium silicate, stimulates domestic waste incineration slag, and generates highly water-resistant C-A-S-H gel. This not only effectively utilizes domestic waste incineration slag, practices the concept of green environmental protection development, but also improves the water resistance of magnesium phosphate gelling material. Similarly, due to the addition of nano-cellulose, not only the volume stability of the mortar is improved, but also its anti-permeability performance is significantly improved. Therefore, it has positive significance for realizing the preparation and application of magnesium phosphate gelling material in the field of rapid road surface repair.
Owner:FUJIAN AGRI & FORESTRY UNIV
Low-alkali, high-strength, anti-crack, anti-freezing and cold-resistant concrete suitable for plateau regions and preparation method thereof
The invention relates to the field of building materials, in particular to low-alkali, high-strength, anti-crack, anti-freezing and cold-resistant concrete suitable for plateau areas and a preparation method of the low-alkali, high-strength, anti-crack and anti-freezing and cold-resistant concrete. Comprising 140 to 180 parts of low-alkali reinforced Portland cement, 275 to 360 parts of coarse aggregate, 450 to 580 parts of fine aggregate, 40 to 60 parts of silica powder, 15 to 35 parts of lignin fiber, 1.8 to 3.6 parts of a superplasticizer and 100 parts of water. The concrete suitable for the plateau area is prepared by taking the low-alkali reinforced Portland cement as a main material, and compared with traditional low-alkali cement, the low-alkali reinforced Portland cement prepared by the preparation method disclosed by the invention is applied to the concrete, so that the strength is higher, the crack resistance is stronger, and the cold resistance and freezing resistance are better.
Owner:TIBET GAOZHENG CONSTR MATERIAL CO LTD
Silica-aluminum cementing material concrete and preparation method thereof
The invention relates to the field of building materials, in particular to silicon-aluminum cementing material concrete and a preparation method thereof. The silicon-aluminum cementing material concrete comprises 100 to 200 parts of red mud, 0 to 100 parts of fly ash, 0 to 100 parts of steel slag, 0 to 100 parts of lithium slag, 100 to 300 parts of slag powder, 0 to 100 parts of cement, 0 to 50 parts of gypsum, 150 to 200 parts of water, 40 to 50 parts of an alkali activator, 10 to 40 parts of steel fiber, 700 to 750 parts of sand, 900 to 1200 parts of gravel and 1 to 5 parts of a water reducing agent. The water reducing agent comprises a naphthalene-based superplasticizer and calcium lignosulphonate; the cement comprises Portland cement and / or Portland cement clinker. The using amount of solid waste can reach 90%, the compressive strength of the concrete cured for 1 d is larger than 30.0 MPa, the compressive strength of the concrete cured in water for 28 d is larger than 60.0 MPa, and the concrete has the advantages of being fast in strength forming and high in final strength.
Owner:CHINA BUILDING MATERIALS ACADEMY CO LTD
Crack repairing equipment for construction engineering
ActiveCN222121044UImprove repair efficiencyeasy to useBuilding repairsCleaning using gasesArchitectural engineeringDust control
The utility model relates to the technical field of crack repairing of construction engineering, and discloses crack repairing equipment for construction engineering, which comprises a bottom plate, a push handle is fixedly mounted on the left side of the top of the bottom plate, a stirring component is mounted on the top of the bottom plate, and a coating component is mounted on the top of the bottom plate. A dust removal assembly is mounted at the top of the bottom plate, the stirring assembly comprises two fixing plates fixedly mounted at the top of the bottom plate, two mounting plates are fixedly mounted between the two fixing plates, a material storage box is slidably connected between the interiors of the two mounting plates, and a feeding pipe is fixedly mounted at the top of the material storage box; and a servo motor is fixedly mounted at the top of the storage box. According to the crack repairing equipment for the construction engineering, the solidification time of concrete can be prolonged, meanwhile, the transportation time of the concrete is shortened, repairing and filling can be conveniently carried out on multiple cracks with scattered positions, and the using effect and usability of the crack repairing equipment for the construction engineering are effectively improved.
Owner:青岛加信建设工程有限公司