371results about How to "Achieve modification" patented technology

The invention discloses a method for preparing an adsorbent by modifying attapulgite clay. A silicon hydroxyl group on the surface of the attapulgite clay is used to react with an amino silane coupling agent to obtain the adsorbent the surface of which has an amino functional group. The preparation method is simple and easy to operate, as well as has wide application prospect. The adsorbent has excellent adsorption property for reactive dye, heavy metal, a dye intermediate with a sulfonic acid group and organic acid.

The invention discloses a method for preparing a modified naphthalene water reducing agent, which comprises the following steps: A, adding industrial naphthalene to a glass lining reaction kettle to be melted, and adding industrial concentrated sulfuric acid to the reaction kettle; B, sampling and measuring the acid number to determine the water quantity to be added to a hydrolysis reaction; C, adding industrial formaldehyde to the mixture to perform reaction so as to obtain a naphthalene sulfonic acid formaldehyde condensation compound; D, adding pulping waste liquor and water to the mixture respectively from the top and the middle part of a formaldehyde absorption tower while adding the formaldehyde to the mixture, using a pump to perform circulating spraying on the waste liquor and the water on the upper section and the lower section of the adsorption tower respectively, and adding the waste gas generated by a condensation reaction to the lower part of the formaldehyde absorption tower so as to have a counter current contact with the water and obtain a waste liquor containing the formaldehyde; E, adding a diluted formaldehyde solution to a condensation reaction material, reducing the viscosity of the material and reclaiming the formaldehyde; F, delivering the formaldehyde pulping waste liquor to a waste liquor reaction kettle to perform sulphonation and condensation reactions; and G, preparing the modified naphthalene water reducing agent. The method achieves the zero emission of the formaldehyde with less usage; the water reducing rate of the water reducing agent is improved by 3 to 8 percent compared with the conventional product, and the utilization of an environmental pollutant pulping waste liquor is achieved.

The invention discloses hydrophobic heat-resistant silicone modified polyester resin and a preparation method thereof. Specifically, the hydrophobic heat-resistant silicone modified polyester resin is prepared from the following components in parts by weight: 3-8 parts of dihydric alcohol, 100-120 parts of triatomic alcohol, 60-120 parts of diacid, 100-250 parts of silicone intermediate, 0.5-1 part of catalyst, 5-10 parts of water-carrying agent and 160-240 parts of organic solvent, wherein the weight-average molecular weight of the silicone intermediate is 800-2000, and the silicone intermediate contains 3-20% of hydroxyl and 2.5-15% of methoxyl or ethoxy group. The hydrophobic heat-resistant silicone modified polyester resin has excellent hydrophobic property, heat resistance, oxidative resistance and anti-yellowing performance, and also has low surface energy, good pollution resistance, metal adhesive force and mechanical energy. The technical process of the preparation method is simple in operation, and repeatability is good.

This invention provides the periodic copolymer PCL-PEO-R which was polymerized with poly-epsilon-caprolactone and polyethylene glycol. The polymerization degree of PCL segment is between 10 and 1000, and the corresponding molecular weight is between 1000 and 100000; the polymerization degree of PEO segment is between 10 and 100, and the corresponding molecular weight is between 400 and 5000; the interval group between tertiary amine N and PEO is the alkyl made up of 2-10 carbon atoms, and the selective preference number of carbon atom is 2-4. The other two alkyls on the atom of tertiary amine N may be the same either the different methyl or ethyl. The alkyls which were used to composite phosphorylcholine were made up of the liner chain or the branched chain, and the saturated or the unsaturated alkyls with 1-20 carbon atoms. This invention also provides the preparation of the interpolymer, as well as its application in the preparation of biology medical material.

The invention relates to a multicomponent micro droplet microfluidic chip and a processing method thereof. The provided multicomponent micro droplet microfluidic chip is formed by a covering layer (A), a hydrophobic chip layer (B), a hydrophilic layer chip layer (C) and a base layer (D) which are stacked sequentially. The invention further provides a processing method of the multicomponent micro droplet microfluidic chip.

The invention discloses a flue gas absorbent which simultaneously has functions of desulphurization and denitration and a preparation method and an application thereof. Calculated according to 1L of deionized water, the flue gas absorbent provided by the invention is composed of 1.66-594g of an oxidizing agent, 3.8-1144g of a buffering agent, 2.7-222g of a stabilizing agent and 1L of deionized water. The preparation method provided by the invention comprises the following steps of: adding the buffering agent into 1L of deionized water, dissolving and uniformly mixing, adding the stabilizing agent, dissolving and uniformly mixing, adding the oxidizing agent, fully dissolving and uniformly mixing to obtain the absorbent. The absorbent provided by the invention and a calcium-based absorbent are simultaneously used so as to realize desulphurization and denitration in a same device, have high removal efficiency, and have less corrosion to the device with no discharge of desulphurization wastewater. In addition, desulphurization byproducts are dry, which is in favor of comprehensive utilization, disposal and stacking.

The invention discloses a thermal insulation silicon dioxide aerogel/hydroxylation glass fiber felt composite and a preparation method thereof. The thermal insulation silicon dioxide aerogel/hydroxylation glass fiber felt composite is characterized in that silicon dioxide aerogel accounts for 50-80 weight parts of a matrix, and hydroxylation glass fiber felt accounts for 70-120 weight parts of a reinforcing body. The thermal insulation silicon dioxide aerogel/hydroxylation glass fiber felt composite is prepared by preparing a silica sol system of an MQ structure (M represents (CH3)3SiO1/2, Q represents SiO4/2) through raw materials including absolute ethyl alcohol, deionized water, hexamethyldisiloxane and the like under the acid catalysis environment, then adding gel catalysts, submerging preprocessed glass fiber in the silica sol system to form a wet gel and fiber felt composite, conducting soaking through normal hexane after ageing is conducted for 12-24 h so that water in the system can be removed, and conducting drying to obtain the silicon dioxide aerogel/hydroxylation glass fiber felt composite at temperature of 50-120 DEG C and pressure of 0.01-5 Pa for 1-5 h.

The invention discloses an atomization device for preparing alloy metal powder. The atomization device comprises a body. A vacuum melting chamber and an atomization chamber are sequentially arranged in the body from top to bottom. A melting device and a heating device are arranged in the vacuum melting chamber. The heating device heats the melting device. The melting device comprises a liquid outlet. The liquid outlet communicates with the top of the atomization chamber through a diversion pipe. A gas spray nozzle is arranged in the atomization chamber and is connected with high-pressure inert gas through a pipeline. The gas spray nozzle sprays the high-pressure inert gas towards an outlet of the diversion pipe. An oxygen-containing gas pipeline and a gas inlet device connected with the oxygen-containing gas pipeline are arranged in the atomization chamber. The oxygen-containing gas pipeline conveys oxygen-containing gas into the atomization chamber through the gas inlet device. By means of the atomization device, the surface of the alloy metal powder can be passivated in the atomization process, and therefore the sphericity degree of copper, indium and gallium alloy powder and the phenomenon of the strong adhesion among the powder are controlled.

The invention discloses a preparation method of an ion mineralization blocking agent for heavy metal contaminated soil remediation. The preparation method is characterized in that a crystal mixed compound agent having ultrahigh cation-exchange capacity, specific surface area and adsorption property is prepared by using phosphoric acid, calcium chloride, bentonite and biomass wastes as raw materials through high-temperature baking, the crystal mixed compound agent is compounded with a sulfenyl compound so as to realize the mineralization blocking of heavy metal ions in the soil through the deep synergistic effect of multiple mechanisms such as ion exchange, adsorption, complexation, precipitation and the like, and the purpose of the in-site remediation of heavy metal contaminated soil is achieved. The compound agent prepared by the method is high in active ingredients, wide in application range, small in using amount and low in cost, takes effect quickly and can be used for the efficient in-site remediation of farmlands and other industrial heavy metal contaminated soil.

The invention relates to a preparation method of ultraviolet-resistant and high-temperature-resistant methyl silicone resin, relates to the preparation method of modified methyl silicone resin, and is used for solving the problems that the existing methyl silicone resin is poor in high temperature and ultraviolet resistance, complicated in preparation method and high in cost. The preparation method comprises the following steps of:1, dispersing ethyl orthosilicate in anhydrous ethanol and then adding a mixing solution of deionized water, the anhydrous ethanol and ammonia, thereby obtaining a silica ethanol solution; 2, dispersing tetrabutyl titanate in the anhydrous ethanol and then adding the mixing solution of the deionized water, the anhydrous ethanol and hydrochloric acid, thereby obtaining a titania ethanol solution; 3, dispersing methyl triethoxysilane and diethoxydimethylsilane in the anhydrous ethanol, thereby preparing a methyl silicone resin prepolymer; and 4, regulating the pH values of the solutions obtained in the steps 1 and 2 to be 7 and performing a refluxing operation after adding the prepolymer, thereby obtaining the methyl silicone resin. The method is conventional in raw material preparation as well as simple and easy to implement. The thermal weight loss rate of the modified methyl silicone resin at the temperature of 300 DEG C is 0.6, so that the modified methyl silicone resin is good in ultraviolet resistance.

The invention belongs to the technical field of the production process of activated kaolin and in particular relates to a method for preparing activated kaolin by washing kaolin with water. The method comprises the steps of preparing a kaolin filter cake, preparing kaolin dry powder, thermally activating kaolin, and preparing activated kaolin by performing depolymerization and modification on the thermally activated kaolin. Deep treatment is performed on kaolin resources by use of processes such as appropriate-temperature calcination, efficient depolymerization and dispersion and modification on the basis of the traditional treatment process of washing the kaolin with water, therefore, the activated kaolin having the characteristics of volcanic ash can be prepared; the activated kaolin can be applied to the fields such as a high-grade concrete additive, a cable filler, a water-based coating and the like, and has the characteristics of short setting time, high early strength, shrinkage compensation, no corrosion to reinforcements, high resistivity and the like; as a result, the valued added of the kaolin resources can be increased, and the activated kaolin has enormous market space potential.

The invention discloses a multi-level cooperative modified lithium battery positive electrode material nickel-cobalt lithium manganate and a preparation method thereof. The prepared lithium battery positive electrode material nickel-cobalt lithium manganate is composed of lithium transition metal composite oxide particles which are expressed by a general formula LiaMn1-x-y-zNixCoyM1zM2wO2-(M3tOmt/2), M1 elements are mainly distributed in primary particles of the material, M2 elements mainly exist on the surfaces of the primary particles, and M3 elements mainly exist on the surfaces of secondary particles of the material. According to the method, multi-level modification on the surfaces of the secondary particles, the surfaces of the primary particles and the interiors of the primary particles of the material can be achieved, the prepared material has good storage, output and circulation characteristics, and the application requirement of lithium-ion batteries, in particular to power batteries for vehicles is met.

The invention discloses a material surface modification method, a modified material and application thereof, and a medical product, and relates to the technical field of material surface modification.The surface modification method of the material comprises the following steps: forming a coating on the surface of the material through a colloidal particle self-assembly method, wherein the colloidal particles comprise inorganic colloidal particles with the particle size of 1-10 [mu] m and organic polymer colloidal particles with the particle size of 0.05-0.75 [mu] m, all or part of the inorganic colloidal particles are subjected to chemical modification, and the chemical modification comprises chemical functional group modification and/or bioactive molecule modification. According to the invention, chemical modification and self-assembly of colloidal particles are combined, physical and chemical properties of the surface of the material can be regulated and controlled at the same time,regional diversity of surface chemistry can be achieved by selecting colloid particles with different chemical modifications for self-assembly, the method is simple and rapid, and the surface with a multi-stage physical structure and complex chemistry can be constructed in a large area in one step.

The invention relates to a modifying method of a product containing cotton fibers. The method includes (1) a step of treating cotton fibers with an alkali and then washing the cotton fibers until neutrality; (2) a step of preparing modifying slurry including a graphene material and auxiliary dye; (3) a step of soaking the cotton fibers treated by the step (1) into the modifying slurry prepared in the step (2), and performing modification; (4) a step of further treating the cotton fibers treated by the step (3) to obtain modified cotton fibers. Cotton fiber modification is achieved by bonding the graphene material and cotton fibers so that the graphene material can be firmly bonded to the cotton fibers. Functions of the product containing the cotton fibers do not decrease obviously along the increase of the number of times of washing, and functions (an antibacterial function, a far infrared function, and the like) are not obviously reduced. In a modification process of the product containing the cotton fibers, related steps and reagents for cotton fiber dyeing can be added to increase bonding soundness between the graphene and the cotton fibers.

The invention discloses a phosphorus-containing hydroquinone derivative, a preparation method and the application thereof as well as phosphorus-containing flame-retardant epoxy resin prepared by the phosphorus-containing hydroquinone derivative, a preparation method and the application thereof. The invention comprises the steps of: first, leading double-aldehyde-group compound and hydroxyl-containing primary amine compound or hydroxyl aldehyde-group compound and phenylenediamine compound to have reaction, and obtaining imine dihydric phenol which has phenolichydroxyl at the two ends of a molecule and contains Schiff base structure on the framework; then, leading the obtained imine dihydric phenol and phosphorous acid diester compound containing active P-H bond to have addition reaction, and obtaining the phosphorus-containing hydroquinone derivative which has phenolichydroxyl at the two ends of the molecule; and finally, leading the obtained phosphorus-containing hydroquinone derivative and epoxy chloropropane to have etherification reaction under the base catalysis, and obtaining the phosphorus-containing flame-retardant epoxy resin which has flame retardance, heat resistance and good comprehensive performance. The experimental result proves that the phosphorus-containing flame-retardant epoxy resin can adapt to the requirement of electronic industry for high-performance high polymer material.

The invention relates to a production method for a nano high molecular bamboo fiber integrated wallboard. The nano high molecular bamboo fiber integrated wallboard comprises the following raw materials: polyvinyl chloride resin, calcium carbonate powder, bamboo powder, stearic acid, a foaming agent, a foaming agent regulator and a lead, calcium and zinc salt stabilizer. The production method comprises the following production steps: uniformly stirring and mixing the raw materials, and transferring the raw materials to an extruding forming machine to form a formed semi-product with a unique cavity configuration; pulling and stretching the semi-product, and covering the semi-product with a sizing mold for vacuumized extruding forming so as to form a wallboard substrate; and laminating the wallboard substrate at a high temperature, and then cutting the wallboard substrate according to a set specification to prepare the nano high molecular bamboo fiber integrated wallboard.

The invention provides a surface polymerization-modified hydrotalcite material and a preparation method thereof. Hydrotalcite is used as a raw material, and the surface of the hydrotalcite is organized by directly using hydroxyl on the surface of the hydrotalcite or micromolecules such as a silane coupling agent, and then an allyl monomer is added for surface grafting polymerization, so that a layer of polymer 'film' with relatively low polymerization degree is formed on the surface of the hydrotalcite to realize modification of the surface of the hydrotalcite and improve the compatibility ofthe hydrotalcite and the polymer; the dispersivity of the hydrotalcite in polymer resin can be improved. The surface polymerization-modified hydrotalcite is added into PE (polyethylene) according to an adding amount of 1 weight percent, so that the dispersivity is obviously improved; meanwhile, the hydrotalcite is dispersed in PE in the form of a single particle. The modification method is applicable to the hydrotalcite prepared by various methods; moreover, the obtained polymerization-modified hydrotalcite can be applicable to various types of polymer resin, so that the application performance is effectively improved.

The invention, relating to the field of cell manufacturing and energy storage, discloses a surface modification method for raising the activity of an electrode material of a vanadium cell, comprising the following steps: firstly cleaning the electrode material of the vanadium cell to remove surface impurities, then carrying out modification treatment of the electrode material by using plasma, reacting the gas which generates plasma with the electrode surface under ionization state to generate polar functional groups; and finally carrying out ultrasonic cleaning on the modified electrode material for 5-30 min and drying at 60-120 DEG C. According to the invention, by using the method of the invention to carry out surface modification on the electrode material of the vanadium cell, the hydrophilcity of the electrode surface is enhanced, partial polar functional groups has good catalytic influence on electrode reaction, and the energy storage efficiency of the cell is expected to increase. The method can be used for processing material surfaces with various morphologies and can keep mechanical properties and the like of material matrixes, the experiment condition are easy to control and the method has no pollution to environment. The method is efficient and environmentally friendly.

The invention provides a nano-silica modified silicon resin super-hydrophobic coating, and a preparation method and an application thereof. The nano-silica modified silicon resin super-hydrophobic coating is formed by grafting the surface of a nano-silica particle with a hydrophobic functional group molecule having low surface energy and high stability and then crosslinking with silicon resin. Theformed nano-silica modified silicon resin super-hydrophobic coating has low surface energy and a super-hydrophobic surface of a micro-nano binary coarse structure, and the static contact angle of thecoating is 159.6-161.8 DEG C. The super-hydrophobic coating provided by the invention has the advantages of high stability and high hydrophobicity; and the preparation method is simple and easy to implement, the hydrophobic coating is applied to live working tools and instruments, the safety of distribution network live working under the high-humidity condition can be improved, the application range of distribution network live working is expanded, and the operation safety and power supply reliability of a distribution network are improved.

The invention relates to a spray-coating device and a spray-coating method for restraining secondary electron yield of a solid dielectric material and belongs to the technical field of plasma. The spray-coating method comprises the following steps of: washing and drying a to-be-treated sample; building the spray-coating device for restraining the secondary electron yield of the solid dielectric material; carrying out an atmospheric plasma torch spray-coating experience; and carrying out a secondary electron yield test and material surface physical shape observation. According to the spray-coating device and the spray-coating method provided by the invention, by utilizing plasma torches generated by an atmospheric plasma spray gun, a reaction precursor reacts to generate a Ti-containing group and an N-containing group; a compact and uniform TiN film is deposited on the surface of a dielectric; specifically, a gas-carrying precursor has decomposition and polymerization reaction; polymerization, grafting and crosslinking effects are realized on the surface of the dielectric so that the deposited film forms a 'micro-trap' structure, the surface roughness is reduced, the secondary electron yield of the solid dielectric is restrained, and the surface insulation property of the dielectric is improved.

The invention discloses a preparation method of an oxidized graphene/sodium lignin sulfonate modified polyurethane foam material, relates to the preparation method of materials, and aims to solve theproblems of poor compatibility between graphene and a polyurethane monomer and poor dispersity of oxidized graphene in a polyurethane foam material. A method I comprises the following steps: liquidifying a sodium lignin sulfonate solvent; 2, modifying the oxidized graphene; 3, preparing a polyhydroxy component; 4, preparing an isocyanate component for foaming; 5, foaming. A method II comprises thefollowing steps: 1, liquidifying the sodium lignin sulfonate solvent; 2, modifying the oxidized graphene; 3, preparing the polyhydroxy component; 4, foaming. According to the preparation method disclosed by the invention, MDI (Diphenylmethane Diisocyanate)/sodium lignin sulfonate can be utilized for modifying the oxidized graphene, the modified oxidized graphene can be uniformly and stably dispersed in a base material, the modified oxidized graphene and connected sodium lignin sulfonate molecules or MDI are used as a whole, and the problem of compatibility of an inorganic additive-oxidized graphene in a polymer matrix is solved.