202results about How to "Modification process is simple" patented technology

The invention discloses a method for preparing nano silver and titanium dioxide thin films on the surfaces of hollow glass beads, which comprises the following steps of: I, firstly coating a nano silver thin film on the surface of a hollow glass bead by using a chemical plating method; and II, then directly coating a layer of nano titanium dioxide thin film on the surface of the hollow glass bead coated with the nano silver thin film by using a hydrothermal method. The method disclosed by the invention has the advantages of raw material saving, simplicity and convenience in operation, good binding strength, higher photocatalytic activity and the like, and endows hollow glass beads with a photocatalytic degradation property for dyes and organic pollutants.

The invention provides a method for preparing composite hydrogel through modifying bamboo shoot leftovers and an application of the composite hydrogel. An adsorption material is prepared by the steps of extracting cellulose from the bamboo shoot leftovers, then modifying by sodium chloroacetate, carrying out epoxy chloropropane cross-linking, followed by carrying out inverse suspension polymerization, and finally carrying out freeze drying. The prepared hydrogel beads are used as a bio-adsorbent, methylene blue is used as a dye model molecule, an adsorption effect on methylene blue is studied, and a theoretical foundation is laid for adsorption and sustained release of the hydrogel. The novel composite hydrogel prepared by utilizing the bamboo shoot processing waste leftovers is rich in raw material sources and low in cost, can achieve waste utilization, and promotes recycling economy; and the prepared hydrogel can be applied to adsorption of dye wastewater and adsorption and sustained release of a model drug, reduces pollution of bamboo shoot leftover arbitrarily discarding on the environment, and can play a certain role in promoting green development of ecological resources.

The invention relates to a method for modifying a wheat protein by using a compound enzyme method. The method comprises the steps: adding water in the wheat protein as a raw material to blend wheat protein slurry, then adding neutral protease and glutamine transaminase, carrying out enzymolysis and enzyme deactivation under the conditions of a certain pH and certain temperature to obtain enzymolysis wheat protein slurry, freeze-drying, crushing, and sieving to obtain modified wheat protein powder. The gel property, the solubility and the viscosity of the modified wheat protein powder are respectively increased by 108.03 percent, 111.56 percent and 422.07 percent in comparison with those before modification. According to the method, the wheat protein is modified by adopting the compound enzyme method, the gel characteristic of the wheat protein is improved, the functional characters of the solubility, the emulsifying property, the foaming characteristic and the like are completely improved, the modified wheat protein with a relatively good processing property is obtained, and the comprehensive utilization of the wheat protein is promoted.

The invention discloses a lithium-enriched manganese-based anode material with a fast ion conductor coating layer and a surface heterostructure and a preparation method of the lithium-enriched manganese-based anode material. The surface of the lithium-enriched manganese-based anode material is coated with a coating layer consisting of Li3PO4 and Li4P2O7; a spinel phase nano-crystal is inlaid in the surface of the lithium-enriched manganese-based anode material; the spinel phase nano-crystal and a lithium-enriched layered material form a heterostructure; the lithium-enriched manganese-based anode material has a structural formula of Li1+aMnbMcO2, wherein M is one or more of Ni, Co, Al, Cr, Fe and Mg, 0<=a<=1, 0<=b<=1, and 0<=c<=1. The method comprises the following steps: (1) fully mixing the lithium-enriched manganese-based anode material with a proper amount of phosphate; and (2) sintering the sample which is uniformly mixed in a certain atmosphere, thus obtaining the lithium-enriched manganese-based anode material with the fast ion conductor coating layer and the surface heterostructure. The first coulombic efficiency of the lithium-enriched anode material is improved, the cycling stability and rate performance of the lithium-enriched anode material are improved, and the requirements of a power battery can be met.

The invention discloses a stereo liquid crystal displayer structure and a method for manufacturing the same, wherein, when the liquid crystal displayer is made, a raster layer is integrated between an upper plaroid and an upper glass plate of the displayer, forming a stereo liquid crystal displayer which has the advantages of high precision and accurate para position and is based on the parallax barrier technique. The invention can be widely applied to a plurality of liquid crystal displayers with different screen sizes; moreover, the invention has the advantages of easy technological transformation, low manufacturing cost and preferable stereo displaying effect.

The invention belongs to the field of waste residue utilization and specifically relates to a modified phosphogypsum as well as a preparation method and a use of the modified phosphogypsum, solving the technical problem that a novel modified phosphogypsum is provided, which is prepared by taking phosphogypsum, papermaking white clay and kiln dust as raw materials so that industrial waste residues are utilized thoroughly to overcome the defect that the previous modifiers need other natural minerals and chemical raw materials to further achieve the purpose that wastes are treated by using wastes. The modified phosphogypsum is prepared from the following raw materials in parts by weight based on dry matters: 0.2-0.9 part of phosphogypsum, 0.9-8.1 parts of papermaking white clay, and kiln dust accounting for 0.5%-3% of the total weight of the modified phosphogypsum. The preparation method of the modified phosphogypsum comprises the treatment steps of washing, flotation, alkaline neutralization modification and the like; meanwhile, the modification process is basically performed in slurry, and therefore, the phosphogypsum is modified thoroughly, and stable and reliable in quality. The obtained modified phosphogypsum can be used as a cement retarder.

The invention discloses a modification method for super-hydrophobic packing particles for an anti-contamination flashover coating and application. The modification method comprises the following steps: 1) preparing a packing particle dispersion; 2) preparing an ethanol dispersion of a fluorinated silane coupling agent, and adjusting the pH value of the ethanol dispersion of the fluorinated silanecoupling agent to 3-5; 3) adding the fluorinated silane coupling agent into the dispersion obtained in the step 2), performing ultrasonic treatment to sufficiently hydrate the fluorinated silane coupling agent so as to obtain a fluorinated silane coupling agent solution for later use; 4) adding the fluorinated silane coupling agent solution prepared in the step 3) into the dispersion with the packing particles prepared in the step 1), and performing a heating stirring reaction to modify the surfaces of the packing particles; 5) drying the modified material, and grinding, thereby obtaining themodified packing particles. According to the modification method, the surfaces of the packing particles for the anti-contamination flashover coating are modified by using the fluorinated silane coupling agent, then the surfaces of the packing particles are hydrophobic but oleophilic, furthermore the hydrophobicity of the coating is improved, and the hydrophobic angle can be up to 150 degrees or larger.

The invention discloses a kind of preparation method of the titanate KR-38S surface modified minicrystal muscovite active fille and chooses muscovite as raw material. The technics is as follows: weigh minicrystal muscovite and then put it into high-speed mizer; heat the material, whisk it in the high-speed mixer for 30 minutes and adjust the temperature no higher than 90deg.C; weigh the thinner of titanate, acetone, in amounts of weight, titanate:acetone=1:1-3; weigh titanate KR-38S, material: titanate=100:0.4-3.9; confect the titanate surface modified solution, put the titanate into the container with thinner of acetone and whisk it until being well-proportioned; mix the material in high gear, put the titanate surface modified solution into the high-speed mixer and whisk it for between 10min and 30min and control the temperature no more than 90deg.C. It is featured by abundant resource, low cost, convenient technics, wide use and obvious economic and social effects.

The invention relates to the field of composite materials, in particular to a preparing method of brand-new nanometer titanium oxide modified hollow glass beads. The obtained hollow glass beads have excellent heat reflecting performance. By controlling technological parameters of concentration of tetrabutyl titanate in a precursor, reaction temperature and time and the dispersant amount, the modified technology of the hollow glass beads is optimized, and the method is easy and convenient to operate. Test results show that the hollow glass beads modified by nanometer titanium oxide particles have low heat conductivity coefficient and high heat reflectivity and can meet the actual needs.

The invention relates to a preparation method of halamine-containing antibacterial polyacrylonitrile fiber, belonging to the technical field of modification of fiber fabric. The preparation process comprises the steps of: firstly, using alkaline water solution to soak the polyacrylonitrile fiber, and causing the fiber to have hydrolysis reaction and the like; generating acylamino, carboxyl, imido groups and the like on the surface of the fiber; and using hypohalite to rinse the fiber, generating halamine on the surface of the fabric so as to endow the fiber with antibiosis. The prepared polyacrylonitrile fiber has a broad spectrum antibacterial function; and after being sterilized, the fiber is rinsed by the hypohalite water solution again in a halogenated way, so that the antibacterial function of the fabric can be regenerated.

The invention discloses a silane coupling agent containing a vinyl ether chain segment, and a preparation method and an application thereof. The silane coupling agent is a novel silane coupling agent. The silane coupling agent is acquired through the catalytic reaction of the traditional coupling agent with a formula (IV) structure and fatty alcohol-polyoxyethylene ether or alicyclic alcohol polyoxyethylene ether. The application of the silane coupling agent disclosed by the invention in preparing a high-performance tread rubber by in situ modifying white carbon black can effectively reduce the VOC discharge in the size mixing process and in the use process of rubber products. The silane coupling agent disclosed by the invention also can be used for modifying the liquid phase of the white carbon black; the wet-process mixing can be realized; the problems of single method for modifying the white carbon black with the traditional silane coupling agent, large energy consumption in the processing process and serious pollution can be effectively solved; and the traditional coupling agent with the formula (IV) structure and the fatty alcohol-polyoxyethylene ether in low cost are taken as the synthesis raw materials, so that the use cost of the coupling agent is lowered.

The invention disclose a filter paper impregnating emulsion in the automotive industry and a method for modifying the filter paper impregnating emulsion by using a polymeric emulsifier, and relates to a filter paper water-soluble impregnated resin in the automotive industry and the method for modifying the filter paper impregnating emulsion in the automotive industry by using the polymeric emulsifier. The emulsion of the invention comprises the polymeric emulsifier of 0.5 percent to 4 percent, a general emulsifier of 0 to 3 percent, hard-monomer styrene of 40 percent to 55 percent, soft-monomer acrylic ester of 40 percent to 55 percent, crosslinking monomer of 2 percent to 5 percent, and functional monomer of 2 percent to 10 percent according to the mixture ratio of the mass percent. The invention has the modification method that: the hard-monomer, the soft-monomer, the crosslinking monomer and the functional monomer are used as a copolymer, and the automobile air filter paper water-soluble impregnated resin is synthetized through a semicontinuous pre-emulsification emulsion polymerization method. The invention greatly enhances the hydrolytic resistance, solvent resistance and strength character of the filter paper after the impregnating in the water-soluble resin, lowers the emulsion manufacturing cost, and reduces the environment pollution caused by dissociative emulsifier after the general emulsion is applied. The invention has the advantages of high monomer percent conversion, stable emulsion, etc.

The invention provides a method for preparing a high-strength high-density isotropic graphite material. According to the method, pitch mesocarbon micro bead (MCMB) powder of which the D50 is larger than 20 micrometers, and the volatile content is less than 7 percent is taken as a raw material, and the high-strength high-density isotropic graphite material is prepared by adopting the self-sintering process that the raw material powder is added into an organic solvent of pitch, the solvent is removed, the powder is pressed, a green briquette is formed through isostatic compaction, roasting and carbonization are performed, and graphitization is performed. According to the method, an organic solvent method is utilized to disperse bitumastic cement, so as to realize the modification on MCMB powder with large size and low volatile matter, the original shapes and sizes of the MCMB particles are basically kept after modification, good self sinterability is realized, and the finally obtained graphite is fine and uniform in structure, high in density and excellent in mechanical property. The pitch of the dispersed and modified MCMB is distributed uniformly, the inner stress of the green briquette in the isostatic compaction step is more uniformly distributed, and balanced expansion and shrinkage in the working procedures of roasting and graphitization are realized, and therefore, a product is not liable to crack, and the yield reaches not less than 90 percent.

The invention relates to an ardealite-based self-leveling material. he ardealite-based self-leveling material consists of the following materials in parts by weight: 40-80 parts of modified ardealite, 6-15 parts of semi-hydrated gypsum, 20-30 parts of admixture, 1-4 parts of re-dispersible latex powder, 0.10-0.30 part of a retarder, 0.20-1.0 part of a water reducer, 0.10-0.25 part of a water-retaining agent, 0.06-0.15 part of an antifoaming agent and 0.10-0.40 part of an air entraining agent. The ardealite-based self-leveling material has the beneficial effects that firstly, the waste utilization rate is high; secondly, the modifying process of the ardealite is high and the energy consumption is low; and thirdly, the performances of the self-leveling gypsum are improved by virtue of a reasonable proportion of various wastes, for example, CSH (Calcium Silicate Hydrate) phase can be generated by ardealite, carbide slag and coal ashes, so that the water resistance is effectively improved. Therefore, the ardealite-based self-leveling material had dual characteristics of circulation economy and low-carbon economy, and can be extensively applied to an industrial building and a civil building.

The invention relates preparation of castor oil-based coating material and application of the castor oil-based coating material in controlled-release fertilizers. Epoxidized castor oil is prepared from castor oil as a raw material by using a non-solvent method under acid catalysis by using small-molecular carboxylic acid and hydrogen peroxide as modifiers; then, small-molecular alcohols and alcohol amines are used as ring-opening reagents to prepare the modified castor oil coating material 200-400 mgKOH / g in hydroxyl value under the action of a solid acid catalyst. The modified castor oil coating material and isocyanate are used as component A and component B respectively to prepare a modified castor oil coated controlled-release fertilizer by using non-solvent in-situ reaction coating technology. The controlled-release fertilizer is green, the production process of the fertilizer is simple, the controlled release effect is good and stable, and controlled-release fertilizers with different release periods may be prepared by changing coating amount.

A nanoparticles modified epoxy adhesive for ceramics, metals and high-molecular materials is proportionally prepared from the dual-component epoxy adhesive and nanoparticles through mechanical mixing or solution mixing.

The invention discloses a method for improving a property of a magnesium oxychloride cementing material by composite modification. The method comprises the following steps: 1) magnesium chloride and water are mixed at a room temperature and stirred until magnesium chloride is completely dissolved; 2) a modifier organic silicon is added to a solution in Step 1) and sufficient stirring is performed for 10-15min to obtain organic silicon mixed brine; 3) a modifier starch is added to lightly-burned magnesium oxide and stirring is performed for 3-5min to obtain mixed powder; 4) the mixed brine is added to the mixed powder and stirring is performed for 5-10min to obtain the property improved magnesium oxychloride cementing material. The method is simple in technology and low in cost, is applied to a building material product, can significantly improve the water resistance of the product, improves the strength, inhibits moisture absorption and efflorescence, and prolongs the service life.

The application relates to a lithium battery cathode material. The lithium battery cathode material is spinel lithium nickel manganese oxide; the surface of spinel lithium nickel manganese oxide is coated with a coating; the coating comprises LiaBbOc and LiMnBO3; the structural formula of the spinel lithium nickel manganese oxide is LiM(x+y)Ni(0.5-x)Mn(1.5-y)O4, wherein the M is selected from at least one of Co, Al, Cr, Fe, Mg, Zr or Ti, the x is not less than 0 and is less than 0.2, and the y is not less than 0 and is less than 0.2; the LiaBbOc is specifically at least one of LiBO2, LiB3O5,LiB5O8, LiB7O11, Li2B4O7, Li3BO3, Li3B5O9, Li3B7O12, Li4B2O5 or Li4B6O11. The spinel lithium nickel manganese oxide and compounds of boron are mixed and sintered, so that the circling stability of the spinel lithium nickel manganese oxide is improved and the dissolution of manganese of the spinel lithium nickel manganese oxide in an electrolytic solution is restrained. An improved process is suitable for all spinel lithium nickel manganese oxide cathode materials and is simple and feasible, the preparation costs are low, the reproducibility is great, and the process is convenient for large-scale industrial production.

The invention discloses a preparation method and application of modified natural bamboo fiber materials. The preparation method comprises the steps as follows: enabling natural bamboo fibers to perform an oxidizing reaction by adopting a strong oxidant, and obtaining dialdehyde natural bamboo fibers; using the dialdehyde natural bamboo fibers for reacting with ethylenediamine, and obtaining the grafted natural bamboo fibers, that is, the modified natural bamboo fiber materials. The obtained grafted natural bamboo fibers are used for adsorbing formaldehyde to investigate the adsorption effect. The method disclosed by the invention modifies the natural bamboo fibers with an oxidation method and an amination method, the process is simple, raw materials are cheap, and the modified natural bamboo fibers have a relatively good adsorption effect on formaldehyde.

The invention discloses a preparation method of enhanced polyvinylidene fluoride lithium battery conductive adhesive. The method comprises the following steps of adding a mixture of polyvinylidene fluoride, N-methyl pyrrolidinone and a silane coupling agent into a round-bottom flask according to the raw material mass part ratio being 5: (40-50): (1-4); magnetically stirring for 1-3 h, uniformly mixing to obtain the enhanced PVDF adhesive. The manufactured enhanced PVDF adhesive is mixed with the positive active material and the conductive carbon and then added into a ball-milling tank to manufacture uniform slurry; the manufactured uniform slurry is coated on an aluminum foil current collector to improve the bonding intensity of the polyvinylidene fluoride adhesive. The preparation methoddisclosed by the invention is simple in process and easy to operate, and the modified effect is obvious. The modified adhesive prepared by the invention can be applied to the preparation of the lithium ion battery positive plate.

The invention discloses a nanometer titanium dioxide cotton fiber modifying method with improved dyeing property and attachment firmness. The nanometer titanium dioxide cotton fiber modifying method comprises the following specific steps of: firstly, carrying out pretreatment on cotton fibers; secondly, configuring a modifying solution and carrying out modifying treatment on the cotton fibers by adopting a hydro-thermal method; and thirdly, carrying out post treatment on the modified cotton fibers. According to the nanometer titanium dioxide cotton fiber modifying method disclosed by the invention, the problems of poor dyeing properties of the nanometer titanium dioxide coated cotton fibers and low attachment firmness of nanometer titanium dioxide and cotton fibers are solved and the cotton fibers are endowed with the performances of ultraviolet resistance and bacteria resistance.

The invention discloses a modified perovskite type catalyst, which is an ABO3 structure, wherein A is La1-xMx, x is 0 or 0.5, M is one selected from Sr, Ce, Ba and Ca, and B is one or two selected from Mn, Co, Cr, Fe and Ni. The preparation method comprises: 1, mixing the metal salt of A and the metal salt of M according to a molar ratio of A to B of 1:0.8-1:1.2, loading the obtained mixture ontoa carrier according to a sol-gel method, drying, and calcining to prepare an ABO3 perovskite type material; 2, immersing the perovskite catalytic material prepared in the step 1 in an acidic solution;and 3, washing the material obtained in the step 2 with distilled water or deionized water, placing in an oven after the pH value is neutral, and drying to obtain the modified perovskite catalyst. According to the present invention, the prepared modified perovskite type catalyst has the significantly increased catalytic activity compared with the original perovskite type catalyst, and retains theexcellent high-temperature resistance of the perovskite material.

The invention discloses a porous oil absorption material and a preparation and regeneration method thereof. The porous oil absorption material is a porous ceramic material uniform in pore distribution and with the pore diameter distribution range of 0.1-100 micrometers and above 40% of porosity, the porous oil absorption material is prepared from Al2O3 and SiO2, surface activation treatment is conducted on the porous oil absorption material so as to improve the surface hydrophilicity of the material, and the porous oil absorption material is soaked with modified liquid to obtain super-strong oil absorption capacity. The porous oil absorption material having an oil contamination removing function has the advantages of being simple in modification process, low in modification cost, high in oil absorption speed, large in oil absorption amount, high in water body purification degree and convenient to regenerate and the like.

The invention discloses a manganese-zirconium dual metal modified selective catalytic reduction catalyst for a molecular sieve type diesel engine. In the catalyst, manganese and zirconium elements enter a molecular sieve by a liquid ion exchange-immersion method; by taking the total weight of the modified powdered catalyst as reference, the manganese element accounts for 4.5 to 7.5 percent, and the zirconium element accounts for 4.5 to 15 percent; by taking the total weight of a supported catalyst as reference, a coating accounts for 5 to 15 percent; urea or ammonia is adopted as a reducing agent to remove NOx in exhaust gas of the diesel engine by virtue of selective catalytic reduction reaction; the novel SCR (selective catalytic reduction) catalyst for the diesel vehicle is prepared from non-toxic molecular sieve and low-toxic manganese and zirconium elements, so that the toxicity of the catalyst to a human body is reduced; and simultaneously a high-activity temperature window of the catalyst in the SCR reaction of the diesel vehicle is enlarged. According to the modification method, the supporting capacity is improved, the supporting proportion is more flexible and adjustable,and further optimization of the catalyst performance is facilitated.

The invention relates to the field of single track railway tunnel construction, in particular to an overall self-propelled hydraulic lining trolley. The overall self-propelled hydraulic lining trolley comprises an overall formwork, a trolley main framework supporting the overall formwork, a vertical framework supporting the overall formwork, and a beam, wherein the vertical framework and the beam are arranged at the upper end of the trolley main framework, and a first hinge and a second hinge are in the 19-20 degree positions of haunches on the left side and the right side of the overall formwork respectively. The lining trolley is good in integrality, easy to operate, high in adaptability and capable of meeting the requirement of construction of a plurality of clearance fracture surfaces of a single track railway, and one lining trolley can be applicable to a plurality of lining fracture surfaces.

The invention discloses a CO2-stripping process for urea with efficient condensation and low installation height and a high pressure tube condensation reactor. Problems of a traditional urea process are solved, including high civil construction framework, high device investment and hard operation, management and maintenance. With the specific high pressure tube condenser adopted, gas and liquid are separated, unreacted gas in the high pressure tube condensation reactor is directly sent to a scrubber, and simultaneously reacted liquid is sent to a synthesizing tower by a high pressure ejector. Compared with the traditional urea civil construction framework, the height of the framework of the process is lowered by 20-25m. The process has the advantages of simple modification, energy-saving property, lowered energy consumption, lowered investment, convenient operation and convenient maintenance and overhauling.

The invention discloses a hybridized organic silicon-phosphorus type epoxy modifying agent used for a copper clad laminate of a printed circuit board, a preparation method and application thereof. The hybrid organic silicon-phosphorus type epoxy modifying agent is prepared by the following steps: mixing and stirring 100-500 parts of phosphoric active agents, 10-300 parts of polysiloxanes, 0.05-5 parts of catalysts and 0.1-20 parts of deionized water based on parts by weight, carrying out reflux and hybridization on the mixture at the temperature of 60-120 DEG C for 2-8h and then cooling the mixture. The hybridized organic silicon-phosphorus type epoxy modifying agent is applied to epoxy resins used for modifying the copper clad laminate of the printed circuit board.

A process for preparing the active filler from the microcrystalline muscovite through modifying its surface by epoxy silane includes such steps as baking the microcrystalline muscovite, loading it in a mixer, using glacial acetic acid for regulating the pH value of alcohol to 3-7 to obtain deluent, proportionally mixing it with epoxy silane as coupling agent to obtain surface modifier, spraying it onto the microcrystalline muscovite in mixer, high-speed mixing and drying.

The invention discloses a microcrystalline muscovite active powder filler modified on the surface of an aluminate coupling agent and a preparation method thereof. The microcrystalline muscovite powder is used as a raw material. The muscovite powder material is dried at about 110 °C to remove all adsorbed moisture; melt the aluminate (for wax-like solids), and melt the aluminate at a temperature slightly higher than the melting point of 70 to 73 °C; Dry the material and put it into a high-speed mixer; preheat the material, make the material stir at a high speed in the high-speed mixer for about 30 minutes, and control the temperature to be ≤73°C; weigh the aluminate, and the weight is based on material: aluminate = 100:0.5 ~3.9; high-speed mixing of materials, slowly and evenly pour the aluminate into the high-speed mixer, high-speed mixing for about 20 minutes, and control the temperature to be ≤90 °C; modification effect testing, using viscosity testing and other methods to test and evaluate the modification effect. Evaluation. It has abundant resources, convenient modification process, low cost, good effect, wide application and obvious economic and social benefits.