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67 results about "Triisopropanolamine" patented technology

Triisopropanolamine is an amine used for a variety of industrial applications including as an emulsifier, stabilizer, and chemical intermediate. It is also used to neutralize acidic components of some herbicides.

Premixed flow-state solidified soil and preparation method thereof

The invention discloses premixed flow-state solidified soil and a preparation method thereof, and the premixed flow-state solidified soil comprises the following components in parts by weight: 100 parts of silty clay; 8 to 15 parts of a curing agent; 48 to 90 parts of water; wherein the curing agent comprises the following components: 10 to 15 parts of sulphoaluminate cement; 40 parts to 55 parts of superfine steel slag powder; 30 to 40 parts of fly ash; 0.5 to 1.5 parts of sodium silicate; 0.1 to 0.3 part of a foaming agent; 0.1 part to 0.2 part of sodium thiocyanate; 0.1 part to 0.2 part of hydroxymethyl cellulose; 0.05 part to 0.2 part of triisopropanolamine; 0.1 part to 0.5 part of calcium nitrate; and 0.5 to 1 part of a polycarboxylic acid water reducing agent. The preparation method of the premixed flow-state solidified soil is suitable for using silty clay as a raw material, and greatly improves the strength, compactness, fluidity and other properties of the premixed flow-state solidified soil.
Owner:CHINA RAILWAY SHANGHAI ENGINEERING GROUP MATERIALS IND &TRADE CO LTD +1

Polyurethane filling adhesive as well as preparation method and application thereof

The invention discloses a polyurethane filling adhesive as well as a preparation method and application thereof, and relates to the field of cable materials. The polyurethane filling adhesive comprises hydrophobic polyurethane, an anti-hydrolysis agent, a heat conducting agent and a flame retardant; the hydrophobic polyurethane is formed by polymerizing a soft segment, a hard segment and an amine chain extender, and the soft segment comprises at least one of polytetrahydrofuran ether, dihydroxybutyl-terminated polydimethylsiloxane and aminopropyl terminated polydimethylsiloxane; the anti-hydrolysis agent comprises triisopropanolamine, a carbodiimide anti-hydrolysis agent and an epoxy silane anti-hydrolysis agent. Hydrophobic polyurethane adopts a soft segment containing hydrophobic groups, hydrolysis is inhibited from the source, meanwhile, the hydrolysis resistance is improved in cooperation with the ternary compound hydrolysis-resistant agent, a compact highly-physical cross-linked network is constructed, hydrolysis is inhibited from a chemical structure and a physical barrier community through cooperation of the three components, and long-acting hydrolysis-resistant protection is achieved; and the stability of heat-conducting property and flame-retardant property of the material is maintained in a severe environment in which a high-voltage cable is used.
Owner:GUANGZHOU POWER SUPPLY BUREAU GUANGDONG POWER GRID CO LTD

Liquid triisopropanolamine feeding device for phosphorus slag micro-powder dry grinding production

The invention relates to the technical field of phosphorus chemical industry solid waste resource utilization, and particularly discloses a liquid triisopropanolamine feeding device for phosphorus slag micro powder dry grinding production, which comprises a liquid storage assembly, a metering conveying mechanism, a preheating mixing mechanism, a dry grinding machine butt joint assembly and an intelligent regulation and control module. The liquid storage assembly stores materials under the protection of nitrogen and at a constant temperature; the metering conveying mechanism achieves constant-temperature and accurate metering conveying of materials through a variable-frequency plunger pump, an electromagnetic flowmeter and a pipeline with a heat preservation heat tracing function. The preheating mixing mechanism atomizes liquid triisopropanolamine through an atomizing nozzle, and the liquid triisopropanolamine and phosphorus slag raw materials are forcibly mixed to be uniform in a heating cavity through a stirring assembly. The dry mill butt-joint assembly realizes sealed conveying of the mixed materials to the dry mill; and the intelligent regulation and control module is connected with and cooperatively controls each component. The problems of large metering error, high volatilization loss, non-uniform mixing and easy blockage in the prior art are solved, and the phosphorus slag grinding efficiency, the product quality and the system operation continuity are remarkably improved.
Owner:HUIDONG JINCHUAN PHOSPHORUS CHEM CO LTD

Method for preparing cement by utilizing modified lithium slag composite multi-source solid waste

The invention discloses a method for preparing cement by using modified lithium slag composite multi-source solid waste, and belongs to the technical field of building materials and solid waste resource utilization. The core of the method is that the lithium slag is subjected to'targeted curing-gradient excitation 'modification: firstly, an aluminum salt solution is adopted for pretreatment, and soluble lithium ions are specifically cured to eliminate the hydration inhibition effect of the soluble lithium ions; then co-grinding with calcined magnesium oxide, and adding sodium silicate and calcium sulfate whiskers step by step for gradient excitation; the modified lithium slag, granulated blast furnace slag, fly ash, Portland cement clinker, desulfurized gypsum / phosphogypsum composite gypsum and the like are subjected to synergistic grinding, then a composite exciting agent composed of solid water glass, triisopropanolamine and calcium formate is added, and the cement is prepared through homogenization. According to the invention, the problem of performance degradation under the condition of high doping amount of the lithium slag is fundamentally solved, the prepared cement has the outstanding advantages of normal coagulation, high strength (especially later strength) and small dry shrinkage, and high value-added resource utilization of the multi-source solid waste is realized.
Owner:MIANYANG TEACHERS COLLEGE +1

Grinding aid composition for improving grinding efficiency of superfine cement

PendingCN121135216AMicrofine cementPtru catalyst
The invention provides a grinding aid composition for improving the grinding efficiency of superfine cement, which comprises the following components in percentage by mass: silicate ester prehydrolysate (30-45% of alkoxy silane, 40-55% of alcohol solvent and 5-10% of acid catalyst), a surface adsorbent (8-12% of triethanolamine or triisopropanolamine), a dispersion stabilizer (2-4% of polycarboxylic acid ether with molecular weight of 2000-5000), and the balance of water. And an optional adjuvant (1-3% of acetylacetone). The preparation method comprises a pre-hydrolysis stage and a compounding stage. During application, the surface adsorbent and cement are premixed, then prehydrolysate is added for common grinding, and the dispersion stabilizer is added in stages. According to the composition, the grinding energy consumption is reduced by 20-30%, the particle aggregation index (CI value) is reduced to below 0.35, the specific surface area of cement reaches 500-800m < 2 > / kg, the compressive strength in 3 days is improved by 20-35%, the compressive strength in 28 days is improved by 10-15%, and the composition is economical and efficient.
Owner:宁夏科润建材科技有限公司

High-activity conductive steel slag composite activator, preparation method and application thereof

ActiveCN117567065BSlagCarbon nanotube
The application belongs to the technical field of solid waste utilization, and discloses a high-activity conductive steel slag composite activator, a preparation method and application, which comprises the following components in parts by mass: polyol amine 0.6-1 part, polyol 2-4 parts, sodium citrate 0.8-1.2 parts, calcium oxalate 1-1.5 parts, silica ash 0.2-0.6 parts, and carbon nanotube array 0.05-0.1 part; the polyol amine comprises glycerol, triethanolamine, diisopropyl alcohol amine and triisopropyl alcohol amine; and the polyol is ethylene glycol. The polyol amine, the polyol, the sodium citrate, the calcium oxalate, the silica ash and the carbon nanotube array are mixed in parts by mass; and the mixture is subjected to magnetic stirring for 10 hours. The application has obvious improvement effect on the conductivity of steel slag cement, and the carbon nanotube array reduces the resistivity, which is beneficial to the health monitoring of soil and the active alarm of concrete diseases. The application has lower cost, rationally utilizes waste resources, and is beneficial to the ecological environment.
Owner:YANGTZE DELTA REGION INST OF UNIV OF ELECTRONICS SCI & TECH OF CHINE (HUZHOU)

Clay stabilizer for polymer dry powder directly-prepared variable-viscosity fracturing fluid

PendingCN121592329ADrilling compositionStabilizer for polymersPolyurea
The invention discloses a clay stabilizer for a polymer dry powder direct distribution variable-viscosity fracturing fluid. The clay stabilizer is prepared from quaternary ammonium salt, an alcohol amine compound and a polyamine compound as raw materials in a solvent. The quaternary ammonium salt is quaternary ammonium salt with the carbon chain length of C12-C18; the alcohol amine compound is selected from at least one of ethanolamine, dimethyl propanolamine, hydroxyethyl piperazine, piperidine, isopropanolamine, triisopropanolamine, aminomethyl propanolate, hydroxyethyl ammonium salt and the like; the polyamine compound is selected from any one of poly dimethyl diallyl ammonium chloride, polyquaternary ammonium salt, poly allylamine, polyurea, polybutanediamine, polyethyleneimine, polyethylene polyamine and a polyethyleneimine cross-linked substance. The clay stabilizer disclosed by the invention is particularly suitable for polymer dry powder direct distribution variable-viscosity fracturing fluid, the stability of clay can be remarkably improved, particularly, excellent inhibition performance can still be kept under high-temperature and high-salt conditions, stratum damage is reduced, and the application requirements in complex environments of oil fields are met.
Owner:SICHUAN DIMAN OIL & GAS NEW MATERIALS TECHNOLOGY CO LTD

Lubricant containing Guerbet alcohol derivative and preparation method and application thereof

PendingCN121203735AAdditivesBase-materialsDodecaneIsostearyl alcohol
The invention belongs to the technical field of lubricants, and discloses a lubricant containing Guerbet alcohol derivatives and a preparation method and application thereof. The lubricant is prepared from the following components in parts by weight: 2 to 6 parts of Guerbet alcohol derivative, 0.2 to 1 part of sulfurized isobutylene, 0.05 to 0.3 part of tungsten disulfide nanosheet, 0.01 to 0.1 part of surface modified fullerene, 0.5 to 1.5 parts of triisopropanolamine borate, 80 to 95 parts of 2-octyl-dodecyl cyclopentane, 0.3 to 0.8 part of antioxidant and 0.1 to 0.5 part of antirust agent. The Guerbet alcohol derivative is an ester derivative of Guerbet alcohol; the surface modified fullerene is obtained by modifying fullerene by using dodecyl mercaptan and azodiisobutyronitrile. When ester synthesized from isostearyl alcohol is used as an ester derivative of Guerbet alcohol, the lubricant still has good lubricating performance. Furthermore, the high-temperature-resistant and high-pressure-resistant oxidation performance is good.
Owner:FOSHAN SHUNDE FUYANSHENG LUBRICANT

A low-carbon cement concrete steam-curing enhancer and its application

ActiveCN119898989BCeramic shaping apparatusActive agentMonoisopropanolamine
The invention discloses a kind of low carbon cement concrete steam curing strengthening agent and application thereof, the present invention screens and obtains a kind of strengthening agent for high iron phase cement clinker, and the strengthening agent can be adapted to steam curing process, and quickly improves the early strength and ultimate strength of concrete member.The strengthening agent includes 0.5-5 parts of nano-calcium carbonate, 0.02-0.2 parts of alcoholamine additives, 0-2 parts of inorganic salts, 0.01-0.2 parts of surfactants; Alcoholamine additives are selected from diethanol monoisopropanolamine, monoethanol diisopropanolamine, triethanolamine, triisopropanolamine, and inorganic salts are selected from aluminum sulfate, sodium metaaluminate, sodium chloride, sodium sulfate, calcium chloride, and the surfactant includes at least one of polydimethylsiloxane, fluorosilicone, and ethylene glycol siloxane.The present invention reverses the effect decline problem caused by the combination of alcoholamine strengthening agent and steam curing process by adjusting the temperature system and strengthening agent component before steam curing, so that strengthening agent and steam curing process produce synergistic effect.
Owner:ANHUI CONCH IND TECHNOLOGY RESEARCH INSTITUTE CO LTD

Nano calcium carbonate dispersion stabilizer, preparation method thereof and nano calcium carbonate dispersion liquid

The invention relates to the field of concrete building materials, and provides a nano calcium carbonate dispersion stabilizer, a preparation method thereof and a nano calcium carbonate dispersion liquid. The nano calcium carbonate dispersion stabilizer is prepared from the following raw materials in parts by weight: 10 to 20 parts of triisopropanolamine, 80 to 90 parts of acrylic acid-acrylamide copolymer and 0.1 to 0.5 part of thickening resin. According to the nano calcium carbonate dispersion stabilizer, the triisopropanolamine, the acrylic acid-acrylamide copolymer and the thickening resin are combined and matched, so that the nano calcium carbonate dispersion stabilizer has a relatively high dispersion effect, has a particularly obvious dispersion effect on nano calcium carbonate, and can effectively prevent the nano calcium carbonate from being agglomerated.
Owner:SHIJIAZHUANG CHANGAN YUCAI BUILDING MATERIALS +1

Composite functional cement additive and preparation method thereof

PendingCN121850440AMethacrylateMeth-
The invention provides a composite functional cement additive and a preparation method thereof, and belongs to the technical field of cement. The additive comprises the following components: polycarboxylic acid modified condensation, triisopropanolamine, triethanolamine and sodium gluconate. The polycarboxylic acid modified condensation compound is formed by copolymerizing methyl allyl polyoxyethylene ether, acrylic acid and 2-hydroxyethyl methacrylate phosphate which are used as comonomers. Through molecular design and component compounding, multiple synergistic effects are generated. And the unique structure can effectively delay the aggregation of cement particles and greatly improve the workability of the slurry. All functional components are integrally designed, so that the compatibility problem is avoided, and the performance stability is ensured. Meanwhile, by refining pores and optimizing a microstructure, the anti-permeability and durability of the concrete are remarkably enhanced, and the comprehensive performance is remarkably improved.
Owner:XINGNING LONGJIANG BUILDING MATERIAL IND CO LTD

A modified volcanic rock ultrafine composite admixture and its preparation method

PendingCN122079519Apromote generationThe calcium to silicon ratio increasesSolid waste managementDepolymerizationSuperplasticizer
This invention discloses a modified volcanic rock ultrafine composite admixture and its preparation method, belonging to the technical field of building materials and solid waste resource utilization. The admixture is composed of volcanic rock, S95 grade mineral powder, fluorogypsum, silica fume, lime powder, nano-alumina, triisopropanolamine, and polycarboxylate superplasticizer in a specific ratio. The invention also discloses its preparation method, including drying, weighing, and co-grinding the raw materials to a D50 of 7.0-8.0 μm. Through the synergistic activation effect among the components, especially the depolymerization of the volcanic rock vitreous network by F⁻ in the fluorogypsum, the adjustment of the calcium-silicon ratio between the mineral powder and volcanic rock, and the combined effect of nanomaterials and chemical additives, the early and late-stage activity of the volcanic rock is significantly improved, and the water demand is reduced. The obtained admixture has a 7-day activity index ≥85%, a 28-day activity index ≥88%, and a water demand ratio ≤108%, and can directly replace traditional mineral powder and fly ash in concrete, solving the problem of the scarcity of high-quality admixtures in western regions, and has significant economic and social benefits.
Owner:CHANGZHOU ARCHITECTUAL RES INST GRP CO LTD

Concrete homogenizer solution, slurry water for concrete mixing and concrete

PendingCN120736817ASlurryGlycol synthesis
The embodiment of the invention discloses a concrete homogenizing agent solution. The concrete homogenizing agent solution is prepared from the following raw materials in parts by mass: 0-3 parts of propylene glycol, 1-15 parts of triisopropanolamine, 0-3 parts of ethylene glycol, 1-3 parts of sodium polyacrylate and 76-98 parts of clear water. The concrete homogenizer solution in the embodiment of the invention can reduce the water consumption per square meter of concrete and effectively improve the strength of the concrete.
Owner:QUANZHOU SANFANG BUILDING MATERIALS CO LTD

Efficient solidification and degradation method for river and lake sediment

The application discloses a kind of high-efficiency solidification and digestion method of river and lake sediment, it is related to sludge treatment technical field, river and lake sediment and sulphoaluminate cement, silane modified montmorillonite, triisopropanolamine modified steel slag, quicklime are fully stirred and mixed, then the obtained mixture is backfilled to river and lake, open air natural curing 10-15 days, after river and lake is recharged with water.The application adds a certain amount of solidifying agent composed of sulphoaluminate cement, silane modified montmorillonite, triisopropanolamine modified steel slag and quicklime in river and lake sediment, and the treatment effect is good, not affected by the content of organic matter in river and lake sediment, and the obtained solidified sludge has high strength.
Owner:绍兴市清安环境科技有限公司

Lightweight low-carbon concrete and preparation method thereof

PendingCN120903888ACeramicwareCalcium nitrideLithium aluminate
The invention discloses lightweight low-carbon concrete and a preparation method thereof, and relates to the technical field of concrete. The coconut shell fibers are modified with the assistance of enzymolysis by utilizing triisopropanolamine, a physical adsorption layer is formed by the triisopropanolamine through microwave irradiation, then the physical adsorption layer cooperates with lithium aluminate in a concrete matrix, the condensation speed and the early strength of the concrete are improved, meanwhile, the volcanic slag is used as lightweight aggregate, and the cost is reduced. The preparation method comprises the following steps: firstly, preparing the concrete to improve the mechanical property and corrosion resistance of the concrete, then replacing part of cement with coconut shell ash, pretreating coconut shells with a calcium salt solution before the coconut shell ash is prepared to enhance the mechanical property of the concrete, and then during a calcining process, adding ammonia gas and silicon dioxide in the coconut shells to improve the mechanical property of the concrete. Meanwhile, calcium and ammonia gas react to generate calcium nitride, so that the corrosion resistance and the mechanical property of the concrete are further enhanced.
Owner:JIANGSU JINHAINING NEW BUILDING MATERIALS TECH CO LTD

Dimensionally stable polyurethane and composite materials

ActiveCN115956094BPolymer sciencePolyol
Rigid polyurethanes and composites are made from a reaction mixture comprising an aromatic polyisocyanate and a polyol mixture. The polyol mixture has an average hydroxyl equivalent of 125 to 275 and an average hydroxyl functionality of 2.5 to 4 hydroxyl groups per molecule. 5% to 33% by weight of the polyol mixture is triisopropanolamine. Rigid polyurethanes made from this reaction mixture exhibit excellent dimensional stability, even when cured at or near room temperature.
Owner:DOW GLOBAL TECHNOLOGIES LLC

A kind of mine shotcrete based on coal gangue and its preparation method

The present application relates to the technical field of shotcrete, and specifically provides a mine-used shotcrete based on coal gangue and a preparation method thereof. Wherein, the shotcrete includes component A and component B in a weight ratio of 100: (3-9); wherein component A includes the following components in parts by weight: 100-140 parts of cement, 135-150 parts of coal gangue, 50-70 parts of water, 15-20 parts of admixture, 1-5 parts of calcium formate, 4-5 parts of water reducer, and 1-2 parts of air entraining agent; component B includes the following components in parts by weight: 4-10 parts of polyaluminium sulfate, 1-9 parts of triisopropanolamine, 1-4 parts of aluminium sulfate 18hydrate, 1-4 parts of ethylene glycol, 2-5 parts of nano-aluminium hydroxide, and 3-5 parts of triisopropanolamine octanoate. The shotcrete provided in the present application still has better mechanical properties while using coal gangue as aggregate.
Owner:BEIJING RESIDENT NEW MATERIAL TECH CO LTD

New generation triisopropanol amine monopropanoate based grinding aid with high grinding efficiency, strength enhancer

PCT designated stageWO2026127856A1Organic chemistryPropanoic acidMetallurgy
The present invention relates to the grinding aid used in the cement industry, in the clinker grinding phase of cement production and in the preparation of cementitious systems. In particular, the present invention relates to the grinding aid and synthesis method consisting of the Triisopropanol amine monopropanoate composition obtained as a result of the esterification reaction of Triisopropanol amine with propanoic acid.
Owner:BURSA ULUDAG UNIVERSITESI

Reactor cleaning process and composition

A process of cleaning a reactor includes providing an alcohol-containing material to the reactor; and providing a metathesis catalyst to the reactor. The reactor contains a high molecular weight polymer gel and an organoaluminum material. The alcohol-containing material is not an alkyl tartrate and may be selected from triisopropanolamine, 4-tert-butylcatechol, isopropanol, and phenol formaldehyde resins.
Owner:G-3 CHICKADEE PURCHASER LLC

A two-dosage form copper etching solution and a preparation method thereof

ActiveCN122105406BO-Phosphoric AcidTetrazole
The application provides a two-dosage-form copper etching liquid and a preparation method thereof, and belongs to the technical field of copper etching liquids, and comprises the following steps: mixing deionized water, ethylene glycol monobutyl ether and a hydrogen peroxide aqueous solution to obtain an A agent; mixing and reacting deionized water, a glucose acid aqueous solution, aminotri (methylenephosphonic acid), lactic acid, triisopropanolamine, gamma-glycidyl ether oxypropyl trimethoxysilane and aluminum lactate to obtain an aluminum-containing hybrid precursor; adding a first phosphoric acid aqueous solution, methanesulfonic acid and lactic acid into the aluminum-containing hybrid precursor, and then adding triisopropanolamine, a second phosphoric acid aqueous solution, 5-amino tetrazole and deionized water, and performing aging and filtration to obtain a B agent; and mixing the A agent, the B agent and deionized water to obtain the two-dosage-form copper etching liquid. The application can improve the storage stability, etching uniformity and copper surface flatness of the etching liquid.
Owner:SUZHOU BOYANG CHEM

Concrete anti-erosion special admixture suitable for extreme conditions and preparation method thereof

PendingCN120441221ASlagKaolin clay
The invention belongs to the technical field of building materials, and discloses a concrete anti-erosion special admixture suitable for extreme conditions and a preparation method thereof, the concrete anti-erosion special admixture suitable for extreme conditions is prepared by mixing the following components: a component A containing fly ash, water granulated slag and silicon powder; the component B comprises dihydrate gypsum and desulfurized gypsum; the component C comprises calcium hydroxide, inorganic sodium salt and sodium silicate; the component D is prepared from triethanolamine and triisopropanolamine; a component E containing active silica and metakaolin; the F component comprises nitrite and nitrate; the component G comprises lauryl sodium sulfate and triterpenoid saponin. The concrete anti-erosion special admixture is researched and developed on the basis of industrial solid waste, is stable in performance and has multiple functions, the performance of fresh concrete can be improved, and the strength, durability and temperature resistance of the concrete can be greatly improved.
Owner:XINJIANG CONCRETE BUILDING MATERIALS TECHNOLOGY CO LTD +1

Process for gas-solid phase synthesis of isopropanolamine

The invention belongs to the technical field of preparation of isopropanolamine, and particularly relates to a process for gas-solid phase synthesis of isopropanolamine. The gas-solid phase isopropanolamine synthesis process comprises the following steps: (1) preparing a copper-doped silicoaluminophosphate carrier; (2) preparing a modified copper-doped silicoaluminophosphate catalyst; and (3) taking epoxypropane and ammonia gas as reaction gases, taking the modified copper-doped silicoaluminophosphate as a catalyst, and carrying out gas-solid phase reaction in the fixed bed reactor to prepare the isopropanolamine. According to the process for gas-solid phase synthesis of isopropanolamine, copper-doped silicoaluminophosphate is used as a catalyst carrier, cobaltosic oxide and ferric oxide are loaded as catalyst active components, and the process is applied to gas-solid phase reaction of epoxypropane and nitrogen to prepare isopropanolamine. Due to the addition of the catalyst, ring opening of epoxypropane is effectively activated while the activation energy of the nucleophilic reaction of ammonia gas is reduced, the content of monoisopropanolamine in a product is increased, and the content of diisopropanolamine and the content of triisopropanolamine are reduced.
Owner:SHANDONG DIAM CHEM CO LTD

A reduced type alkali-free liquid accelerator and a preparation method thereof

ActiveCN116835903BLinoleoylamideMaterials science
The application relates to a shrinkage-reducing alkali-free liquid accelerator, which comprises the following raw materials in parts by weight: 10-15 parts of a shrinkage-reducing agent, 1-4 parts of a stabilizer, 30-50 parts of an aluminum salt, 3-15 parts of an alcohol amine and 20-30 parts of water; the shrinkage-reducing agent comprises the following raw materials: an organic amine, a polyhydric alcohol acrylate, an initiator, a chain transfer agent and water; the organic amine comprises at least one of linoleyl ethanolamine, linoleamide, ethylene bisoleic acid amide, linoleic acid diethanol amide, triisopropylamine oleate, arachidonylethanolamine and triisopropylamine linoleate; the prepared accelerator can reduce the late shrinkage of sprayed concrete, and meanwhile, the early accelerating effect of the accelerator is not affected.
Owner:SHAANXI KZJ NEW MATERIALS

A modified iron tailings road base material and its preparation and application methods

The application belongs to the technical field of road base and industrial waste treatment, and discloses a modified iron tailing road base material and a preparation and application method thereof. In the road base material, only the iron tailing is used as the stabilizing material, and cement is used as the cementing material, so that the iron tailing is consumed on a large scale, the utilization rate of the iron tailing resources is improved, and the shortage of road engineering sand and gravel is relieved. In the application, soluble sodium salt and KH-550 are used to form modifier A, and castor oil sodium sulfonate, triisopropanolamine and sodium tetradecyl sulfate are used to form modifier B. The iron tailing is modified by using the modifier A first, so that the iron tailing surface has strong electronegativity and the synergistic effect with the modifier B is enhanced. Then, the modified iron tailing is further mixed with the modifier B, so that the compactness of the iron tailing road base material is effectively improved, the compressive strength of the iron tailing road base material is improved, and the water stability of the iron tailing road base material is improved.
Owner:UNIV OF JINAN +1

Process for the preparation of a coarse-pored polyether for polyurethane rigid foam

The application belongs to the technical field of organic synthesis and relates to a preparation method of coarse-pore polyether for polyurethane rigid foam. First, phenolic substances, glucose and an acidic catalyst are subjected to an acetalization reaction to obtain a phenyl glycoside, then the phenyl glycoside, diisopropanolamine and triisopropanolamine are used as a composite initiator, potassium hydroxide is used as a catalyst, and an alkylene oxide is grafted to form a polymer with a molecular weight of 500-800, and after neutralization, adsorption, dehydration and filtration, an intermediate is obtained, then the intermediate is put into a polymerization kettle, a double-metal cyanide complex catalyst is used as a reaction catalyst, and quantitative propylene oxide is continuously grafted, and after removal of low-boiling impurities, the coarse-pore polyether is obtained. The polyurethane rigid foam prepared from the coarse-pore polyether has uniform and relatively coarse pores, and the foam compression strength is obviously improved while maintaining good heat preservation performance.
Owner:HUAIAN CHEN HUA NEW MATERIALS CO LTD

Preparation method and application of composite cement grinding aid

PendingCN120622842ASilanesEthylic acid
The invention relates to the technical field of grinding technology and grinding aid development in a cement production process, in particular to a preparation method and application of a composite cement grinding aid, block polyether amine, triisopropanolamine and the like are mixed and stirred, nano titanium dioxide, boron nitride nanosheets and the like are added for ultrasonic dispersion, and a difunctional silane coupling agent is dropwise added for reaction; cooling, adding magnesium acetate and the like, stirring, adding water to adjust the pH value, and performing three-stage homogenization. The grinding aid contains a dynamic hydrogen bond-covalent bond structure, and all the components synergistically improve the grinding aid effect; the additive is added according to 0.04-0.06% of the mass of cement, so that the specific surface area and the strength can be improved, the water demand is reduced, and the adaptability is improved. The grinding aid can reduce the power consumption of cement grinding, improve the three-day strength, reduce the water demand and improve the adaptability to a water reducing agent, and is green, environment-friendly and wide in application.
Owner:SHANDONG SHUANGKAI GRINDING AID CO LTD

Impermeable self-healing concrete and preparation method thereof

The invention discloses impervious self-healing concrete and a preparation method thereof. The impervious self-healing concrete is prepared from 80-110 parts of impervious self-healing concrete, 80-100 parts of high-strength machine-made sand, 30-50 parts of a cementing material, 5-22 parts of a functional composite material, 1.5-2 parts of a water reducing agent and 15-17 parts of water. The functional composite material is formed by mixing a capillary crystalline accelerant, composite fibers and a catalyst according to the weight ratio of (4-6): (2-4): (1-2); the capillary crystalline accelerant is one or more of sodium silicate, lithium silicate and silica fume; the composite fibers are composed of synthetic organic fibers and inorganic fibers, and the weight ratio of the synthetic organic fibers to the inorganic fibers is (3-4): (1-2). The catalyst is one or more of gypsum, lithium carbonate and triisopropanolamine. The permeable crystallization type accelerant and the catalyst in the functional composite material can promote unhydrated cement particles to continue to react, cracks are filled, the compactness of concrete is enhanced, then the cracks are effectively repaired, and the anti-seepage and self-healing purposes are achieved.
Owner:BEIJING ZHUZONG COMMERCIAL CONCRETE CENT

An enhanced high-efficiency cement activation grinding aid and its preparation method

ActiveCN119977397BMetallurgyActive agent
The present invention relates to the technical field of cement additives, and in particular to a kind of enhanced high-efficiency cement activation grinding aid and preparation method thereof, wherein the cement activation grinding aid is made up of the raw materials of the following parts by weight: 10-20 parts of ethylene glycol, 10-25 parts of propylene glycol, 5-8 parts of rice husk ash, 15-20 parts of urea, 10-18 parts of triisopropanolamine, 10-15 parts of polyols, 5-10 parts of surfactants, 2-7 parts of water reducers, 3-10 parts of flower-shaped composite nanoparticles, and 50-60 parts of water. The cement activation grinding aid in the present invention, by applying the flower-shaped composite nanoparticles prepared to prepare cement grinding aid, has larger specific surface area and excellent tribological properties, can form a firm structure with material, so that fluidity can be improved, and then agglomeration is prevented, while also having the effect of grinding aid and lubrication, significantly improving grinding efficiency when smaller doping amount, so as to achieve the effect of efficient grinding aid.
Owner:JINING SHUNAN BUILDING MATERIALS CO LTD