637 results about "Diethanolamine" patented technology

The invention relates to the technical field of macromolecules, and discloses a preparation method of modified polyurethane toughened epoxy resin, which comprises the following steps: by taking 4-(Boc-amino) phenylboronic acid, diethanol amine, 1, 3-bis (3-glycidyl ether oxypropyl) tetramethyldisiloxane and the like as raw materials, carrying out a series of chemical reactions to obtain a borate siloxane chain extender; the method comprises the following steps: adding a polyurethane prepolymer into the epoxy resin, participating in chain extension of polyurethane, and modifying the epoxy resin by using the polyurethane prepolymer to obtain the modified polyurethane toughened epoxy resin. A'soft segment 'and an Si-O structure in the modified polyurethane can also improve the flexibility of a curing network, effectively change the fracture mechanism of the resin, absorb a large amount of energy when the resin is fractured, and contribute to improving the toughness of the epoxy resin; on the basis of ensuring the strength of the epoxy resin, the toughness and flame retardant property of the epoxy resin are improved, and the epoxy resin can be applied to the fields of composite materials, coatings, adhesives and the like with higher toughness and flame retardant requirements, and has wide applicability.

The invention relates to the field of sealing strips, and discloses a low-VOC (volatile organic compound) automobile sealing strip composite PVC (polyvinyl chloride) material and a preparation method thereof, the material comprises PVC resin, ethylene propylene diene monomer, a modified mesoporous ZIF-8 nano material, composite filler and the like; the modified mesoporous ZIF-8 nano material is prepared by grafting a hydroxylated antioxidant component on the surface of the mesoporous ZIF-8 nano material by using isophorone diisocyanate, and the hydroxylated antioxidant component is prepared by reacting N-(4-anilinophenyl) maleimide with 2-mercaptoethanol; the composite filler is prepared by grafting modified nano silicon dioxide and aminated basalt fiber, the modified nano silicon dioxide is prepared from phenylphosphoryl dichloride, diethanol amine, dibutyl phosphate and isophorone diisocyanate as raw materials, and the aminated basalt fiber is prepared by modifying with an aminated silane coupling agent; the modified mesoporous ZIF-8 nano material and the composite filler are added, so that the flame retardant property, the thermal aging resistance and the mechanical property of the material are improved.

The invention belongs to the technical field of flame-retardant macromolecules, and particularly relates to intrinsic heat-conducting flame-retardant recycled epoxy resin and a preparation method thereof. The preparation method comprises the following steps: (1) carrying out a reaction on diethanol amine and 9, 10-dihydro-9-oxa-10-phosphaphenanthrene 10-oxide (DOPO) to obtain an intermediate A; and (2) carrying out condensation polymerization on the intermediate A and phenylphosphonic acid to prepare the phosphate-terminated polyester flame retardant (PEF). And (3) carrying out epoxidation on 4, 4 '-biphenol to prepare the liquid crystal epoxy precursor LEP. And (4) mixing PEF, LEP and 3, 3 '-dithiodipropionic acid, and heating and curing to prepare the epoxy resin. The prepared epoxy resin has intrinsic heat conduction, flame retardance and efficient recoverability, and is a high polymer material with great potential.

The invention relates to the technical field of petrochemical engineering, and discloses a temperature-resistant anti-swelling agent for fracturing and a preparation process thereof.The preparation method comprises the steps that glycerol triglycidyl ether and diethanol amine are subjected to a ring-opening reaction, a polyhydroxy tertiary amine monomer is obtained, then the polyhydroxy tertiary amine monomer and chloromethylated polystyrene are subjected to a quaternization reaction, and the temperature-resistant anti-swelling agent for fracturing is obtained. Quaternary ammonium salt groups of the anti-swelling agent and negative charges on the surface of clay form electrostatic interaction, and hydroxyl groups and the surface of the clay form hydrogen-bond interaction, so that the anti-swelling agent can be firmly adsorbed on the surface of the clay to form a layer of polymer film, the clay is prevented from being in contact with water, the phenomenon that the clay swells when encountering water is effectively inhibited, and the anti-swelling rate is very high. And the anti-swelling agent contains a heat-resistant polystyrene molecular chain, has excellent high temperature resistance, can maintain good structural stability at high temperature, still maintains high anti-swelling rate, and is suitable for a fracturing fluid system for high-temperature oil reservoir exploitation.

The invention discloses an organic amine composite absorbent for carbon capture and application thereof, and belongs to the technical field of carbon dioxide capture, the organic amine composite absorbent for carbon capture is in a solution state and comprises the following components: a main agent, an auxiliary agent, an accelerant A, an accelerant B and water; wherein the mass ratio of the main agent to the auxiliary agent is 2: (1-2); the mass ratio of the auxiliary agent to the accelerant A is 2: (1-2); the mass ratio of the accelerant A to the accelerant B is 2: (1-2); the total mass concentration of the main agent, the auxiliary agent, the accelerant A and the accelerant B in the organic amine composite absorbent for carbon capture is 30-40 wt%; the main agent is selected from N-methyldiethanolamine or N, N-diethyl ethanolamine, the auxiliary agent is selected from piperazine or hydroxyethyl ethylenediamine, the accelerant A is selected from triethylene glycol monomethyl ether and / or ethylene glycol monomethyl ether, and the accelerant B is selected from ethyl butyl ether and / or isobutyl ether. The organic amine composite absorbent for carbon capture has a wide application prospect in removal of carbon dioxide in flue gas.

The invention relates to the technical field of dispersing agents for ceramics, and discloses a preparation method of a dispersing agent for ceramics, and the novel dispersing agent for ceramics is prepared by taking methoxypolyethylene glycol, bromoacetyl bromide, 4-hydroxyphthalic anhydride, 2, 4, 6-diethanolamine amino-1, 3, 5-s-triazine and the like as raw materials. The polyether polyol contains a plurality of carboxyl groups, has strong interaction with the surface of ceramic powder such as aluminum oxide, has a star-shaped multi-arm polyether molecular chain, can well coat the aluminum oxide powder, can effectively inhibit the growth of crystal nucleus particle size of the aluminum oxide powder, reduces the particle size of the aluminum oxide, and avoids agglomeration and sedimentation of the aluminum oxide; the modified aluminum oxide ceramic powder has good activation degree in solvents such as water, ethanol, dichloromethane or N, N-dimethylformamide and the like, is lower in settling volume and shows excellent dispersing performance.

The invention discloses a hyperbranched water reducing agent for high-tensile wet joint UHPC (Ultra High Performance Concrete) as well as a preparation method and application of the hyperbranched water reducing agent, and belongs to the technical field of concrete admixtures. The preparation method comprises the following steps: mixing pentaerythritol and maleic anhydride, adding a catalyst p-toluenesulfonic acid, and carrying out an esterification reaction to prepare an esterification product; carrying out amidation reaction on the esterification product, diethanol amine and a catalyst sodium ethoxide to obtain a prepolymer; acrylic acid, maleic anhydride and the prepolymer are dissolved in deionized water, an initiator ammonium persulfate is added for a free radical copolymerization reaction, and a main chain polymer is obtained; carrying out phosphorylation reaction on the main chain polymer and phosphorus pentoxide to obtain a phosphorylated main chain polymer; the phosphorylated main chain polymer, methoxypolyethylene glycol and a catalyst p-toluenesulfonic acid are subjected to an etherification reaction, a hyperbranched comb-shaped polymer water reducing agent solution is obtained and then subjected to aftertreatment, and the water reducing agent is prepared. According to the hyperbranched comb-shaped polymer water reducing agent prepared by the preparation method disclosed by the invention, the problems of poor flowability and high viscosity of ultra-high performance concrete (UHPC) are solved by combining a linear side chain of a comb-shaped structure and a three-dimensional branch of hyperbranched topology.

The invention discloses a functional fracturing fluid directly prepared from flow-back fluid of complex water quality. The fracturing fluid is prepared by directly adding a salt-tolerant polymer and an ion trapping agent into the flow-back fluid. The addition amount of the salt-tolerant polymer accounts for 0.15-0.3% of the total mass of the fracturing fluid, and the addition amount of the ion trapping agent is 100-500ppm. The salt-tolerant polymer is prepared by copolymerization of acrylamide, a salt-tolerant monomer and an allyl quinoline monomer, and the molecular weight of the polymer is 4-15 million. The salt-tolerant monomer is acrylamide polyoxyethylene sodium benzenesulfonate or acrylamide sodium sulfonate. The ion trapping agent is prepared from amino trimethylene phosphonic acid, diethylene triamine penta (methylene phosphonic acid), ethylene glycol bis (2-aminoethyl ether) tetraacetic acid, p-methylphenyl diethanol amine, 2, 3-epoxypropyl trimethyl ammonium chloride, fatty alcohol-polyoxyethylene ether, citric acid and tetrahydrofurfuryl acrylate. The fracturing fluid can be directly prepared from the flow-back fluid, the flow-back fluid does not need to be pretreated, and repeated utilization of the fracturing flow-back fluid is achieved.

The invention provides a carbon dioxide absorbent, an absorption method and a preparation method of the carbon dioxide absorbent, and belongs to the field of carbon capture. The carbon dioxide absorbent comprises 20% of a decarburization solvent and 80% of deionized water, and the decarburization solvent is composed of a main absorbent, an activating agent, an antioxidant and a defoaming agent; the main absorbent is 100 parts by mass, and 100 parts by mass of the main absorbent is composed of 65-85 parts by mass of ethanolamine and 15-35 parts by mass of N-methyldiethanolamine; 7 to 9 parts by mass of an activating agent and 0.4 to 0.8 part by mass of an antioxidant. The invention aims to solve the problem of poor carbon dioxide absorption effect of a carbon dioxide absorbent in the prior art. The technical effects of high carbon dioxide absorptivity, low corrosivity, weak oxidative degradability and the like are achieved.

The invention relates to a perovskite solution, a preparation method and application thereof, and a perovskite battery. The perovskite solution comprises a perovskite precursor and an additive, the additives are dibasic acid ester, nylon acid diisobutyl ester, iodobenzene diacetic acid, diisopropanolamine, diethanol amine, diisodecyl adipate, dibutyl adipate, dimethylacetamide, dioctyl adipate, diisobutyl glutarate, dimethyl sebacate, diisobutyl adipate, diisobutyl succinate and triethyl citrate; and at least one of tributyl citrate. According to the perovskite solution disclosed by the invention, the bromide ion-free or low-bromide ion perovskite precursor can form a black-phase film with good stability by adding the additive, so that the photoelectric conversion efficiency of a perovskite photovoltaic device is improved.

The invention relates to the technical field of polyurethane, and discloses a high-conductivity carbon nanotube modified polyurethane fiber membrane, which is characterized in that carbon nanotubes react with 1, 4-butanediamine to obtain aminated carbon nanotubes, 2, 4-toluene diisocynate reacts with polytetrahydrofuran ether glycol to form a polyurethane precursor, and the polyurethane precursor further reacts with 2, 2-dimethylolpropionic acid, 2, 2-dimethylolpropionic acid, 2, 2, 2-trimethyl-1, 3-pentanediol, 2, 2, 4-trimethyl-1, 3-pentanediol, 2, 2, 4-trimethyl-1, 3-pentanediol, 2, 2, 4-trimethyl-1, 3-pentanediol, 2 4-dihydroxyanisole reacts with N-methyldiethanolamine to obtain aldehyde polyurethane, the aldehyde polyurethane reacts with the aminated carbon nanotubes to finally obtain the composite fiber membrane, the interface bonding force of the carbon nanotubes and the polyurethane is enhanced through connection of chemical bonds, and when the composite fiber membrane is subjected to external force, stress passes through chemical cross-linking points, so that the composite fiber membrane is formed. The stress is transferred to the carbon nano tube from the polyurethane matrix, the carbon nano tube can absorb and transfer the stress, and the carbon nano tube can form a conductive network, so that the conductivity of the polyurethane is improved.

The invention discloses an alkali-free accelerator and a preparation method and application thereof in the technical field of concrete additives, and the alkali-free accelerator provided by the invention comprises the following components in percentage by mass: 40%-50% of aluminum sulfate, 10%-15% of magnesium sulfate, 0.2%-0.6% of diethanol amine, 0.5%-1% of catechol-4-ammonium sulfonate, 5%-10% of a stabilizer and the balance of water. The stabilizer comprises silicate dispersion liquid and silica sol. The alkali-free accelerator provided by the invention can be used for spraying concrete, the mixing amount of the alkali-free accelerator is generally 4-6% of the mass of cement, the alkali-free accelerator is good in rapid setting effect and has excellent early and later compressive strength, and meanwhile, the alkali-free accelerator has relatively excellent stability.

The invention relates to the technical field of polyamide cord fabrics, and particularly discloses a preparation method and application of a high-performance polyamide cord fabric. The preparation method comprises the following steps: S1, taking diethanol amine and formaldehyde, stirring, heating, vacuumizing under reduced pressure, cooling, adding 9, 10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide, and continuously stirring to obtain an intermediate; s2, taking the intermediate, triethylamine and acetone, cooling, adding triethylamine under the protection of nitrogen, uniformly stirring, dropwise adding a mixed solution of a composite cross-linking agent and acetone, stirring, and removing a solvent to obtain a heat-resistant modifier; s3, adding a heat stabilizer, a heat-resistant modifier and nylon particles into a mixed solvent, uniformly stirring, carrying out ultrasonic treatment under ultraviolet irradiation, and removing the solvent to prepare pretreated nylon particles; s4, carrying out melt spinning on the pretreated nylon particles and nylon particles to obtain high-performance nylon industrial yarns; and spinning to obtain the high-performance polyamide cord fabric.

The invention relates to the field of emulsions for grainy paper coatings, and discloses a preparation method of a water-based environment-friendly emulsion for a grainy paper coating. The preparation method comprises the following steps: S1, preparing an acrylic carbamate modified monomer from hydroxyethyl acrylate, 2, 4-toluene diisocyanate and diethanol amine; and S2, preparing to obtain the emulsion. S3, obtaining the initiator. S4, deionized water, lauryl sodium sulfate, the emulsion and an initiator are subjected to a polymerization reaction, and an emulsion A is obtained. S5, transferring the emulsion A into a degassing kettle, adding tert-butyl hydroperoxide and vitamin C, and performing oxidation-reduction reaction to obtain emulsion B; and S6, carrying out steam degassing on the emulsion B to obtain the water-based environment-friendly emulsion. The water-based environment-friendly emulsion which is good in stability, glossiness, adhesion fastness, water resistance and weather resistance and low in volatile organic compound content can be prepared, and the preparation method is simple, efficient and environmentally friendly and has wide application prospects and market value.

The invention belongs to the technical field of hot melt adhesive processing, and particularly relates to a quick-drying polyurethane hot melt adhesive and a preparation method thereof. The preparation method comprises the following steps: mixing polyether polyol, isocyanate, a chain extender A, a chain extender B, a crystallization promoting agent, a surface drying promoting agent and an auxiliary agent, and carrying out extrusion granulation, wherein the chain extender A is obtained by carrying out a reaction on acrylamide and diethanol amine and then carrying out siloxane modification on the reaction product by utilizing methacryloyloxymethyltrimethoxysilane; and the chain extender B is obtained by reacting tetrakis hydroxymethyl phosphonium sulfate and barium hydroxide octahydrate and oxidizing by hydrogen peroxide. The prepared hot melt adhesive has better viscosity and also has a certain flame-retardant effect.

The invention relates to the technical field of stripping liquids, and discloses a water-based photoresist stripping liquid for the AMOLED (Active Matrix / Organic Light Emitting Diode) field, which comprises the following components in percentage by mass: 15-20% of 2, 2-dimethylolpropionic acid, 25-30% of diethylene glycol monobutyl ether, 8-10% of diethylene glycol monomethyl ether, 5-8% of diethanol amine, 1.5-3% of a metal protective agent, 0.5-1% of a surfactant and the balance of pure water. According to the stripping liquid, raw materials including 2, 2-dimethylolpropionic acid, diethylene glycol monomethyl ether and diethylene glycol monobutyl ether are subjected to double-tower distillation, metal ions are reduced to 100 ppt, the pollution possibility is eliminated, and metal impurities and granularity in the stripping liquid production process are controlled. According to the invention, the proper metal protective agent and surfactant are adopted, so that the metal silver is protected in the stripping process, the surface tension is reduced, the permeability of the solution is improved, and the problem of photoresist residue is solved.

The invention discloses a weather-resistant wet-process polyurethane resin and a preparation method and application thereof, and belongs to the technical field of polyurethane synthetic leather, the preparation method of the resin comprises the following steps: carrying out prepolymerization reaction on polyester diol and part of isocyanate to generate a prepolymer; the prepolymer and part of isocyanate are subjected to a tackifying reaction, then a chain extender and the remaining isocyanate are added for a chain extension reaction, finally, a multifunctional cross-linking agent is added for a cross-linking reaction, and a target product is obtained finally. The chain extender comprises hydroxyl-terminated dihydric alcohol and N-phenyl diethanol amine, and the number of hydroxyl groups in the polyfunctionality crosslinking agent is at least three. In the forming process of a molecular chain of the polyurethane resin, the molecular chain is lengthened in a plurality of different stages, and substances with different properties are respectively added in different stages to carry out corresponding reactions, so that the crosslinking degree of the resin is increased by optimizing a chain extension process; meanwhile, a resin network structure is optimized, so that the hydrolysis resistance and the peel strength of the resin are improved.

The present invention belongs to the technical field of waterborne polyurethane, and specifically relates to a method for synthesizing an internally cross-linked cationic waterborne polyurethane emulsion. The method comprises the following steps: 1) reacting glycidol and diethanolamine until the infrared spectrum analysis shows that the glycidol and diethanolamine are at 908 cm ‑1 and 845cm ‑1 The epoxy groups disappear, the reaction is stopped, and the product EDEOA, a tertiary amino crosslinking agent, is obtained as a light yellow viscous liquid; 2) polyol and diisocyanate are added to a reactor and heated and kept warm under stirring for reaction; 3) solvent, tertiary amino crosslinking agent, tertiary amino small molecule alcohol amine chain extender, solvent and catalyst are then added to react to obtain a polyurethane intermediate; 4) a neutralizing agent is then added to the reaction system for neutralization reaction, and the temperature is lowered after the reaction is completed; 5) water is added to quickly disperse the mixture uniformly, and the solvent is removed in vacuo to obtain a waterborne polyurethane emulsion. The present invention mainly solves the technical problems existing in the synthesis of cationic waterborne polyurethanes, such as poor emulsion stability, low film mechanical properties, and poor water and solvent resistance.

The invention relates to the field of metal powder material preparation, in particular to silver-coated copper powder with low-temperature sintering activity and a preparation method and application thereof.The preparation method comprises the following steps that copper powder, a reducing agent, a complexing agent composition and a silver plating solution are mixed and react, and the silver-coated copper powder is obtained; the complexing agent composition comprises at least two of ammonia water, triethylene tetramine, ethylenediamine, diethanol amine, benzimidazole, tartaric acid, nitrilotriacetic acid, ethylenediamine tetraacetic acid, disodium ethylene diamine tetraacetate, tetrasodium ethylene diamine tetraacetate and glycine. The preparation method disclosed by the invention is short in process flow, relatively low in cost, capable of keeping good batch stability and easy for industrial production; according to the obtained silver-coated copper powder, under the condition that the silver content is low, the completeness and compactness of a silver layer on the surface of the copper powder are good, the oxidation resistance is high, the service reliability of the silver-coated copper powder is improved, the production cost is saved, and the silver-coated copper powder further has good low-temperature sintering activity.

The invention belongs to the technical field of magnetic refrigeration, and particularly relates to a rare earth cluster material for extremely low temperature magnetic refrigeration and a preparation method thereof.The preparation method comprises the following steps that Gd (NO3) 3.5 H2O, N-methyldiethanolamine and triethylamine are dissolved in anhydrous CH3OH, and a mixture is obtained; and sealing the mixture, and reacting at 100-150 DEG C to obtain the rare earth cluster material. The novel extremely-low-temperature magnetic refrigeration material is prepared on the basis of a controllable solvent thermal hydrolysis method, under a 7T magnetic field, the magnetic entropy change peak value of the novel extremely-low-temperature magnetic refrigeration material appears near 2K, the magnetic entropy change reaches 47.2 J kg <-1 > K <-1 >, and the novel extremely-low-temperature magnetic refrigeration material is the largest in reported pure Gd cluster compounds.

The invention belongs to the technical field of waterborne polyurethane, and discloses photo-thermal antibacterial, self-enhanced and self-healing vegetable oil-based waterborne polyurethane. The high-temperature-resistant polyurethane elastomer is prepared from a system consisting of the following raw materials in parts by weight: 80 to 120 parts of castor oil, 60 to 80 parts of dicyclohexylmethane diisocyanate, 20 to 40 parts of hexamethylene diisocyanate, 20 to 40 parts of N-methyldiethanolamine, 20 to 50 parts of protocatechuic acid, 2 to 10 parts of metal ions, 2000 to 3000 parts of water and 0.5 to 1 part of a catalyst. Metal ions in the photo-thermal antibacterial, self-enhanced and self-healing plant oil-based waterborne polyurethane and phenolic hydroxyl groups in protocatechuic acid are coordinated and self-assembled to form metal nanoclusters, and the waterborne polyurethane material has self-enhanced and self-healing properties due to a low-bond-energy coordination aggregation state structure; meanwhile, the waterborne polyurethane film is endowed with photo-thermal antibacterial performance by the metal nanoclusters. The invention further discloses a preparation method and application of the photo-thermal antibacterial, self-enhanced and self-healing plant oil-based waterborne polyurethane.

The invention belongs to the field of biomass gasification catalysts, and particularly relates to a preparation method of an energy-saving corrosion inhibition type decarburizing agent. According to the invention, under the action of the catalyst, ethylene carbonate and methylamine are adopted as basic raw materials to synthesize N-methyldiethanolamine, and then 1, 3-propane sultone is adopted to modify N-methyldiethanolamine, so that the carbon dioxide absorption amount and absorption rate of N-methyldiethanolamine are improved; the activating agent is added into the energy-saving corrosion-inhibition type decarburizing agent, so that the absorption rate of the decarburizing agent on carbon dioxide can be effectively improved, and the desorption energy consumption of the carbon dioxide is reduced; and the corrosion inhibitor is added, so that the corrosion of metal equipment can be effectively reduced.

The invention provides alcohol amine liquid, a device and a method for decarburization of high-dust gas, and belongs to the technical field of low-carbon metallurgical decarburization in the metallurgical industry. Wherein the alcohol amine liquid comprises alcohol amine, an activating agent, a flocculating agent, a defoaming agent and water; the alcohol amine is selected from one or more of primary alcohol amine, secondary alcohol amine, tertiary alcohol amine or sterically hindered alcohol amine; the activating agent is selected from one or more of piperazine, diethanol amine, diethylenetriamine and diisopropanolamine; the flocculating agent is an inorganic flocculating agent, an organic flocculating agent or a composite flocculating agent composed of the inorganic flocculating agent and the organic flocculating agent; the defoaming agent is a composite defoaming agent consisting of one or more of a non-silicon type, an organic silicon type, a polyether type and a polyether modified organic silicon type. According to the developed alcohol amine liquid, the high-dust gas is carried into the alcohol amine liquid, dust is removed, and the influence of the dust on bubbles is eliminated, so that decarburization treatment on the high-dust gas by using an alcohol amine decarburization method is realized.

Specifically, amine compounds such as monoethanolamine (MEA), diethanolamine (DEA), triethanolamine (TEA) and the like are used as catalytic promoters, on one hand, the carbonization rate can be increased, resource utilization can be enhanced, and on the other hand, by accelerating the carbonization process, the calcium-based solid waste carbonization rate can be increased, the calcium-based solid waste carbonization rate can be increased, and the calcium-based solid waste carbonization rate can be increased. Calcium-based solid wastes (carbide slag, steel slag, high-calcium fly ash and the like) can be quickly converted into useful carbonate products (such as calcium carbonate), so that the economic value of the calcium-based solid wastes is improved; on the other hand, environmental pollution can be reduced, and soil and water source pollution possibly caused in the landfill or stacking process is reduced by converting the carbide slag into stable carbonate.

The invention discloses a preparation method of 1-cyclopropylpiperazine, which belongs to the technical field of pharmaceutical chemicals, and comprises the following steps: taking diethanol amine as a starting material, and carrying out substitution reaction with a sulfonyl reagent to generate an intermediate I; reacting the intermediate I with cyclopropylamine to generate an intermediate II; the intermediate II is subjected to a sulfonyl removal reaction, and 1-cyclopropyl piperazine is generated; compared with the prior art, the synthesis route provided by the invention has the advantages that the initial raw materials are simple and easy to obtain, and the 1-cyclopropylpiperazine is simply, conveniently and efficiently obtained by adopting the inorganic base as the acid-binding agent in the reaction; the problems of high danger and toxicity, high production cost and low production efficiency in the existing preparation process of the 1-cyclopropylpiperazine are solved.

The present application provides ursolic acid diethanolamine salt and ursolic acid morpholine salt. It also provides a composition comprising the salt, and a method of using the salt.

To provide an electrolytic silver germanium alloy plating solution capable of codepositing a sufficient amount of germanium in a film, having good liquid stability, and hardly causing foaming.SOLUTION: The problem is solved by an electrolytic silver germanium alloy plating solution containing a silver source and a germanium source characterized by containing a nitrogen-containing coordination compound having a molecular weight of 500 or less. Specific examples of the nitrogen-containing coordination compound include N,N-di(2-hydroxyethyl)glycine, diethanolamine, N,N-bis(2-hydroxyethyl)-2-aminoethanesulfonic acid, triethylenetetramine, glycine, tris(hydroxymethyl) aminomethane, N-methylglucamine, bis(2-hydroxyethyl)aminotris(hydroxymethyl)methane, tricin, N,N,N',N'-tetrakis(2-hydroxypropyl)ethylenediamine, and salts of these compounds.SELECTED DRAWING: None

The invention relates to the technical field of insulating materials, and discloses a high-temperature-resistant polyvinyl chloride insulating material and application thereof in a cable, parachloroaniline, formaldehyde, bisphenol S, diethanol amine, phthalic anhydride and the like are used as raw materials, a Mannich reaction, a substitution reaction and a ring-opening polymerization reaction are performed to obtain phthalic anhydride polyester polyol, and the phthalic anhydride polyester polyol, 4, 4 '-diphenyl-1, 3-pentanediol, 4, 4'-diphenyl-1, 3-pentanediol and 4, 4 '-diphenyl-1, 3-pentanediol are used as raw materials to prepare the high-temperature-resistant polyvinyl chloride insulating material. The high-temperature-resistant polyvinyl chloride insulation material is prepared by taking 1, 4-diphenylmethane diisocyanate and 1, 4-butanediol as raw materials to obtain modified thermoplastic polyurethane, initiating crosslinking of the modified thermoplastic polyurethane, polyvinyl chloride resin and the like, and uniformly mixing the modified thermoplastic polyurethane, the polyvinyl chloride resin and the like to obtain the high-temperature-resistant polyvinyl chloride insulation material, and the prepared polyvinyl chloride insulation material has relatively good high-temperature resistance and wear resistance.

The invention provides a fire-resistant inorganic fiber cotton board and a preparation method thereof, and belongs to the technical field of fire-resistant materials. The preparation method comprises the following steps: carrying out acid leaching treatment on sepiolite powder by using phosphoric acid, loading ammonium polyphosphate, drying and crushing to obtain a product A; enabling DOPO to react with gamma-aminopropyltriethoxysilane, and stirring and dissolving to obtain a product B; methyltrimethoxysilane and diethanol amine are subjected to hydrolytic polycondensation, dibutyltin dilaurate is added for continuous reaction, and a product C is obtained; combining raw materials including sodium silicate, potassium silicate, the product A, the product B, the product C and the like to prepare a curing liquid; melting and centrifuging the slag into cotton, and carrying out wet forming to obtain an inorganic fiber cotton plate rough blank; and the inorganic fiber cotton board rough blank is subjected to vacuum dehydration, then a curing liquid is sprayed, and the fireproof inorganic fiber cotton board is obtained after drying. The inorganic fiber cotton board is subjected to double-sided spraying by adopting the new curing liquid, so that the fireproof performance is high, and the mechanical property of the inorganic fiber cotton board can be enhanced.

The invention discloses a mixed organic amine absorbent as well as a preparation method and application thereof. The absorbent consists of a main absorbent, an absorption enhancer, a regulator and a solvent, the mass ratio of the main absorbent to the absorption enhancer to the conditioning agent is (0.5-5.0): (0.2-4.0): 1.0; the total mass concentration of the main absorbent, the absorption enhancer and the conditioning agent is 30-50 wt%; the main absorbent is diethylenetriamine, the absorption enhancer is N-methyldiethanolamine, the conditioning agent is 2-amino-2-methyl-1-propanol, and the solvent is water. According to the invention, by compounding and regulating the proportion of the organic amines, the synergistic effect of different types of organic amines is fully exerted, so that the mixed organic amine absorbent has high cycle capacity, low regeneration energy consumption, low absorbent loss, good dynamic performance and other good carbon dioxide capture performance.