39results about How to "Has a steric hindrance effect" patented technology

The invention discloses a preparation method of a nano-capsule composite phase change material. According to the invention, a composite emulsifier, a co-emulsifier and distilled water are added into a reaction kettle, such that a clarified solution is formed; an organic phase change material is added into the clarified solution, and stirring is carried out under a temperature higher by 5-10 DEG C than the phase change temperature, such that an emulsion is obtained; an inorganic silicon source and a stabilizing and dispersing agent are added into the emulsion, and the mixture is stirred, such that a uniformly dispersed stable emulsion is obtained; an acid solution catalyst is slowly dropped into the emulsion, such that silicon source hydrolysis and polymerization reactions are initiated; stirring is stopped when a white precipitate is completely precipitated; the reaction solution is naturally cooled to room temperature, and a precipitation solution is obtained; the precipitate is repeatedly washed by using a mixture of water and petroleum ether; and suction filtration and drying are carried out, such that the material is obtained. According to the nano-capsule composite phase change material provided by the invention, the particle size of capsule particles is smaller than 1mum. The material has relatively high chemical stability, thermal stability, heat transfer and thermal conduction performance, and phase change latent heat. The material can be widely applied in the fields of heat transfer and energy storage thermal insulation.

The invention discloses an anti-static polytetrafluoroethylene membrane and a preparation method thereof. The anti-static polytetrafluoroethylene membrane is prepared from, by mass, 90-96% of polytetrafluoroethylene and 4-10% of modified carbon black. The modified carbon black is obtained by using N-(benzocyclobutene-4-yl) maleimide for conducting surface treatment on carbon black. N-(benzocyclobutene-4-yl) maleimide can improve the lipophilicity and dispersity of the carbon black, and therefore the carbon black can be uniformly dispersed in polytetrafluoroethylene without generation of carbonblack aggregates, so that the anti-static polytetrafluoroethylene membrane has a high breaking elongation rate and great anti-static performance. The carbon black modified by N-(benzocyclobutene-4-yl) maleimide can diminish vibration of the surface resistivity of a product. The decomposition temperature of the modified carbon black reaches 450 DEG C or above, so that the modified carbon black still has excellent thermal stability under the polytetrafluoroethylene processing temperature of 370-390 DEG C, and thermal decomposition cannot happen.

The invention relates to a Ti(CN)-based self-lubricating cermet cutter material added with alumina-coated calcium fluoride composite powder and a preparation method thereof. The cutter material is prepared from the following main raw materials comprising, by mass percentage, 1-20% of the alumina-coated calcium fluoride composite powder, 0.25-5% of magnesium oxide, 3-15% of molybdenum, 8-20% of nickel, 8-20% of cobalt and the balance Ti(CN) through hot pressing and sintering, wherein the sum of the mass percentages of the component is 100%. The cutter material is of a multi-layer core-shell microstructure with CaF2 as a core, Al2O3 as a middle layer and a metal phase as a shell; and CaF2 on the inner layer is effectively protected, the problem that the mechanical properties of a cutter arereduced due to addition of a solid lubricant is solved, and the problems of internal interface stress concentration of the cutter and abnormal growth of cermet grains are relieved. The obtained cuttermaterial has good lubrication performance and mechanical properties, and the hardness and fracture toughness performance are greatly improved.

The invention provides non-aqueous decarburization solution for capturing carbon dioxide in a mixed gas, and belongs to the technical field of capturing of carbon dioxide gas. The invention relates to a non-aqueous decarburization solution, wherein a main absorption component is N-ethyldiethanolamine, and a solvent is N,N-diethylethanolamine. Because the non-aqueous decarburization solution has a high boiling point and low viscosity, uses tertiary amine capable of participating in CO2 absorption as the solvent, and uses secondary amine with a fast absorption speed and a high absorption amount, and easy to regenerate as the main absorption solvent, the absorption capacity, purification degree and desorption speed for carbon dioxide are increased, the temperature range of the reaction is expanded, the volume of a regeneration tower is reduced, the energy consumption of the regeneration is greatly reduced, and the equipment investment and operation cost are reduced. The non-aqueous decarburization solution provided by the invention is mainly used for capturing carbon dioxide in the tail gases of multiple chemical reactions, the tail gases of steel plants and cement plants, ore decomposition gas, combustion flue gas, natural gas, city gas and marsh gas, and has wide application prospect.

The invention discloses a methoxypolyether derivative, aminated polyether thereof, a phosphorylated product thereof and preparation methods and application thereof. The methoxypolyether derivative isprepared by performing a reaction on a phenolic monomer and chlorinated polyether under an alkaline condition; a condensation reaction is performed on the methoxypolyether derivative, an aldehyde monomer and an amine monomer to obtain an aminated polyether intermediate; a phosphorylation reaction is performed on the aminated polyether intermediate to obtain the phosphorylated product; the phosphorylated product can be used as a cement dispersing agent and has a relatively good dispersing effect.

The invention relates to the technical field of building admixtures, in particular to a low sensitivity wet-mixed mortar plasticizer and a preparation method thereof. The preparation method includes the steps of: adding a 4-hydroxybutylvinyl polyoxyethylene ether monomer into a reaction kettle, performing heating to 20-30DEG C, and then successively adding an aqueous solution A of an oxidant, a mixed solution B composed of acrylic acid, vinyltriacetoxy silane, 2-amino-3-p-hydroxyphenylpropionate and 3-hydroxyphenylphosphoryl propanoic acid dihydromyrcenol ester, and a mixed solution C composedof a reducing agent and a chain transfer agent; carrying out mixed reaction, then further adding a sodium hydroxide solution with a mass fraction of 30% and adjusting the pH to 7-8, thus obtaining the wet-mixed mortar plasticizer. Compared with the prior art, the mortar synthesized with the low sensitivity wet-mixed mortar plasticizer provided by the invention has the advantages of low consistency loss, good water retention rate, high mortar compressive strength and long-term stability, etc., and has remarkable progress.

The invention provides a nanocellulose powder material and a preparation method, a redispersed nanocellulose slurry containing it and applications, including nanocellulose and a water-soluble polymer material; wherein, the water-soluble polymer material contains Hydrogen bonds and / or ether bonds. Applying the nano-cellulose powder material provided by the invention to water-based polymer coatings can improve the washing resistance of the coatings.

The invention relates to the technical field of building admixtures, in particular to a wet-mixed mortar plastic stabilizer and a preparation method thereof. The preparation method comprises the following steps: mixing 4-hydroxybutyl vinyl polyoxyethylene ether monomer, acrylic acid, methyl After mixing acryloyloxyethyl succinic acid monoester and water, add hydrogen peroxide; after the reaction, add the aqueous solution of the reducing agent, the aqueous solution of the cocatalyst and the acrylic acid, 2-amino-3-p-hydroxyphenyl propionate, 3- An aqueous solution composed of dihydromyrcenyl hydroxyphenyl phosphopropionate and a chain transfer agent; after the reaction, polyvinyl alcohol is added, and the pH is adjusted to 7-8 to obtain the plastic stabilizer for wet-mixed mortar. Compared with the prior art, the mortar synthesized by the wet-mixed mortar plastic stabilizer provided by the present invention has the advantages of low consistency loss, good water retention, high compressive strength and long-term stability of the mortar, and has significant progress .

The invention discloses a metal pipe and a production method of same. A main body of the metal pipe includes, by weight, 4.5-6 parts of Cu, 1.5-2.5 parts of Mn, 1.5-2.5 parts of Ti, 90-95 parts of Al and 5-10 parts of Zn. The inner side wall of the main body of the metal pipe is coated with an anticorrosion coating which includes, by weight, 10-30 parts of bisphenol A-epoxy chloropropane type epoxy resin, 40-60 parts of N-methyl pyrrolidone, 5-10 parts of butanone, 5-10 parts of a pigment, 20-40 parts of zinc phosphomolybdate, 20-40 parts of zinc oxide, 50 parts of ethyl acetate, 40 parts of a polyurethane adhesive, 60 parts of graphite powder, 10-20 parts of epoxypropane butyl ether, and 20-30 parts of polyaniline. The main body of the metal pipe is free of being swelled, dissolved, damaged and decomposed by a corrosive medium.

The invention discloses anatase titanium dioxide nano-rods and a preparation method thereof. According to the invention, titanium alkoxide is adopted as a titanium source, an organic alkali is adopted as a glue solution, ethylene glycol-water or ethylene glycol-water-ethanol is adopted as a solvent; low-temperature glue solution is carried out, and then high-temperature hydrothermal reaction is carried out; and crystal growth is controlled in a manner of oriented bonding, such that the morphology of a final product is controlled in a special nano-rod shape. The oriented bonding direction is a (001) direction, and a crystal exposed surface is a {101} surface. With different reaction conditions, the diameters of the nano-rods are adjustable within a range of 5-60nm, and the lengths of the nano-rods are adjustable within a range of 50-400nm. According to the nano-rod growth process, a plurality of anatase grains are subjected to local bonding fusion according to a certain optimized direction through crystal lattice match sharing common crystal surfaces, such that the nano-rods with certain length-to-diameter ratio, good dispersion, and huge specific surface area is formed. With an electrode material prepared by using the nano-rods, higher electron collection efficiency can be easily obtained, and high photoelectric performance is provided.

The invention relates to the technical field of building admixtures, in particular to a low-sensitivity wet-mixed mortar plasticizer and a preparation method thereof. The preparation method comprises the following steps: adding 4-hydroxybutyl vinyl polyoxyethylene ether monomer to react In the kettle, after warming up to 20~30 ℃, the aqueous solution A of oxidizing agent is added successively; Mixed solution B composed of dihydromyrcenol propionate; solution C composed of reducing agent and chain transfer agent; after mixing reaction, continue to add 30% sodium hydroxide solution to adjust to pH=7~8, namely The wet mix mortar plasticizer is obtained. Compared with the prior art, the mortar synthesized by using the low-sensitivity wet-mixed mortar plasticizer provided by the invention has the advantages of low consistency loss, good water retention, high compressive strength and long-term stability of mortar, and has the advantages of Significant progress.

The invention discloses a novel functionalized ionic liquid and its preparation method and application. Its molecular composition is tetraethylenepentamine-5-aminoimidazole-4-carboxamide salt, and its molecular formula is [TEPAH][AICA] , the structural formula is as shown in formula I. The preparation method has the advantages of simple preparation, easy operation and implementation. The novel functionalized ionic liquid of the present invention as CO 2 Absorbent, has good solubility in solvents such as water and alcohol, and the formed ionic liquid solution can be used to capture or separate CO in gas 2 . The absorbent not only has efficient CO 2 It has good absorption capacity, good stability and reusability, and is easy to regenerate, with low regeneration energy consumption. Can effectively overcome the absorption of CO by traditional organic amines and conventional ionic liquids 2 The defects provide new ideas for the future industrial application of ionic liquids.

The invention discloses a preparation method of an amphoteric humate coal water slurry dispersant. The preparation method comprises the following steps: preparing sulfomethylated humic acid by reaction of humic acid, formaldehyde and a sulfonating agent; then further performing cationization reaction on sulfomethylated humic acid and a cationic etherifying agent and finally dropping a cross-linking agent to perform cross-linking reaction so as to obtain the novel amphoteric humate coal water slurry dispersant. The method for preparing the coal water slurry dispersant comprises three steps of sulfomethylation, cationization and cross-linking reaction, and anionic and cationic groups are introduced on a matrix of the humic acid, so that the relative molecular weight of the dispersant is also increased; by using the novel dispersant, the apparent viscosity of the coal water slurry can be effectively reduced and the stability of the coal water slurry can be also obviously improved.

The invention relates to a concrete cementitious material regulator and a preparation method thereof. The regulator includes the following components in parts by weight: 475-520kg of mixed alcohol amine grafts, 80-120kg of sodium thiocyanate, and stable dispersion Agent 40-60kg, polyphenolic compound 40-70kg and crospovidone 3-6kg, surplus is water; The preparation method comprises the following steps: S1. add water in stirring tank earlier, then add dispersion stabilizer and thiocyanate Sodium acid, the two components are fully stirred until they are completely dissolved in water; S2. Then add triethanolamine grafts, triisopropanolamine grafts, diethanolamine grafts, and cross-linked Povidone and polyphenol compounds are stirred for 15-25 minutes to obtain a finished mother liquor; S3. Finally, the finished mother liquor is diluted with water at a ratio of 1:12, and the finished concrete cementitious material regulator is prepared after stirring evenly. The invention has the effect of improving the dispersion performance of the concrete cementitious material.

The invention discloses a preparation method of a nanocapsule composite phase-change energy storage material. Firstly, a composite emulsifier, a co-emulsifier, and distilled water are added into a reaction kettle to form a clear solution; an organic phase-change energy storage material is added to the clear solution, and the At 5-10°C higher than the phase transition temperature, stir to obtain an emulsion; continue to add inorganic silicon source and stable dispersant to the emulsion, and stir to obtain a uniformly dispersed and stable emulsion; slowly add acid solution catalyst to the emulsion to trigger the formation of silicon source After hydrolysis and polymerization reaction, all the white precipitates are precipitated, then the stirring is stopped, and the reaction solution is naturally cooled to room temperature to obtain a precipitation solution. The precipitate is repeatedly washed with a mixture of water and petroleum ether, suction filtered, and dried. The nanocapsule composite phase change energy storage material prepared by the method of the present invention has a particle size of the capsule particles less than 1 μm, has high chemical stability, thermal stability, heat transfer and thermal conductivity, and phase change latent heat, and is effective in heat transfer and energy storage. Fields have a wide range of uses.

The invention relates to the technical field of building additives, in particular to a water-retaining wet-mixed mortar plasticizer and a preparation method thereof. The preparation method comprises the following steps of mixing a polyether monomer, cumenyl polyoxyethylene ether, 2-amino-3-(4-hydroxyphenyl)propanoate and a cocatalyst, adding an initiator solution, conducting reaction, respectivelyadding a mixed solution A consisting of acrylic acid and dihydromyrcenyl 3-hydroxyphenylphosphinyl-propanoate and a solution B consisting of an initiator and a chain transfer agent, and after the reaction is finished, adjusting the pH value to 7 to 8 to obtain the wet-mixed mortar plasticizer. Compared with the prior art, mortar synthesized by the wet-mixed mortar plasticizer provided by the invention has the advantages of low consistency loss, better water retaining rate, high mortar compressive strength, high long-term stability and the like, and has remarkable progress.

The invention relates to the technical field of building admixtures, in particular to a water-retaining wet-mix mortar plasticizer and a preparation method thereof. The preparation method comprises the following steps: polyether monomer, cumyl polyoxyethylene ether, 2-amino After ‑3‑p-hydroxyphenylpropionate and cocatalyst are mixed, add initiator solution, add acrylic acid and 3‑hydroxyphenyl phosphine propionic acid dihydromyrcenyl ester to form mixed solution A respectively after reaction, and initiate Solution B composed of agent and chain transfer agent, after the reaction, adjust the pH=7 to 8 to obtain the wet-mix mortar plasticizer. Compared with the prior art, the mortar synthesized by the wet-mixed mortar plasticizer provided by the present invention has the advantages of low consistency loss, better water retention, high compressive strength and long-term stability of the mortar, and has significant progress .

The technology field of the invention involved in the metal processing process has disclosed a brushed process of automobile signs, including the following steps: S1, drawing processes; S2, PVD surface processing processes; S2 also includes the following steps: step 1, PVD processing before processing; Wash the car signs through the cleaning agent, 15‑25min; step 2, baking; bake 10‑15min at 80‑90 ° C at the temperature of the vacuum furnace;Hanging; according to the number of weights, the cleaning agent in the step 1 includes the following components of weight: 70‑80 parts of polyethylene glycol cincharophenyl ether; modified agent;基15 copies of methyl oxygenne.The present invention has the following advantages and effects: polyethylene glycol cindian phenyl ether allows oil to break away from the metal surface; methyl trifle oxyxyne silane is deassed on polyethylene glycoline phenyl ether, adding hydrophilic basesMolecular measurement makes the modified polyethylene glycolic phenyl ether more likely to enter the liquid film, making the bubbles easily spread and penetrate the rupture.