49results about How to "Increase the number of hydroxyl groups" patented technology

The invention discloses a method for directly growing nickel oxide and cobalt oxide and a complex energy storage material thereof on a titanium substrate. The method comprises the following steps of: growing a titanium dioxide nanotube on the surface of the titanium substrate by an anodic oxidation method; soaking in a citric acid solution to further increase the hydroxyl concentration of the wall of the titanium dioxide nanotube; putting the prepared transition metal solution and the treated titanium substrate into a reaction kettle, and performing hydrothermal reaction; and roasting the reacted titanium substrate in N2 atmosphere to obtain a product. Experimental conditions are simple, the requirement on the precision of an experimental instrument is low, the method is easy to operate, and the grown product film is uniform, is stably combined with the titanium substrate and has high energy storage performance, so the method is suitable for preparing the energy storage material taking metal titanium as the substrate.

The invention discloses a waterborne epoxy/acrylic resin emulsion with a core-shell structure as well as a preparation method and application of the waterborne epoxy/acrylic resin emulsion as a waterborne epoxy/acrylic amino baking paint. The method comprises the following steps: performing graft copolymerization reaction on the prepolymer of acrylic monomer and vinyl monomer and a modified epoxy resin under the effect of a solvent, emulsifying to obtain the epoxy/acrylic amino resin emulsion with the core-shell structure with the solid content of 20-30%; mixing the following components in parts by weight: 100 parts of the epoxy/acrylic resin emulsion with the core-shell structure, 90-200 parts of water, 90-200 parts of waterborne curing agent and 0.01-0.5 part of waterborne adjuvant. The environment-friendly waterborne epoxy/acrylic amino baking paint with high paint film mechanical strength can be obtained to substitute the solvent type epoxy paint as a base coat. The waterborne epoxy/acrylic resin emulsion is wide in application scope, suitable for the protective coating of the metal frame structures such as a circuit coil, a PCB and a building automobile in the electronic field.

The invention discloses a water-locking antibacterial material for diapers and a preparation method of the water-locking antibacterial material, and belongs to the field of baby products. The water-locking antibacterial material for diapers comprises the following raw materials: polyether sulfone resin, corn starch, polylactic acid, chitosan, alpha-L-guluronic acid, beta-D-mannuronic acid, gelatin, lignin, phtheirospermum japonicum, sodium hydroxide, cholic acid, polyaspartamide, herba andrographis, radix cordylines fruticosae, fructus forsythiae, rhizoma anemarrhenae, rhizoma polygoni cuspidati, silk fibroin, acrylic acid, sodium alginate gel, hydroxyethyl acrylate, glycerol, polyacrylamide, potassium persulfate, sodium sulfite, N, N-methylene bisacrylamide, modified antibacterial additives, and water-locking and reinforcing materials. The invention discloses specific steps of a preparation method of the water-locking antibacterial material for diapers. The water-locking antibacterialmaterial for diapers provided by the invention has excellent antibacterial and water-locking properties.

The invention discloses a preparation method of modified polypropylene fiber-steel fiber doping high-intensity concrete. The preparation method is characterized in that waste and old tires are mechanically crushed and sieved to obtain waste and old rubber powder; silane coupling agents are added into an alcohol solution; after the hydrolysis, the material is uniformly sprayed onto the surface of the rubber powder; the material is sufficiently mixed; after the treatment in microwaves, a sodium hydroxide solution is used for soaking; then, drying is performed in a baking oven; the modified rubber powder is obtained; polyvinyl alcohol and distilled water are mixed; water bath heating melting is performed; polypropylene fiber is added; uniform ultrasonic dispersion is performed; soaking treatment is performed; drying is performed to obtain the surface treatment polypropylene fiber; a gelling material is finely ground through machinery and is then mixed with Portland cement, steel fiber andnaphthalene-based efficient water reducing agents; the mixture is added into a stirring machine; the obtained material is added; then, sand and tap water are added; stirring is performed for uniformscattering; slurry is obtained; slurry is poured into a mold; scraping leveling is performed by a scraper; after the shaping, still standing is performed; then, mold stripping is performed; standard maintenance is performed; the drying is performed in the ventilation drying place; high-intensity concrete is obtained.

The invention discloses a preparation method of a high-strength high-barrier TPU composite material, and belongs to the technical field of polymer composite material synthesis. According to the method, carrying out a reaction between polytetramethylene ether glycol and 4, 4 '-methylenediphenyl diisocyanate to obtain an isocyanate-terminated TPU prepolymer, adding modified graphene oxide into the TPU prepolymer, and taking the modified graphene oxide and 1, 4-butanediol as a compound chain extender to participate in an in-situ polymerization process, so as to complete a chain extension reaction, thereby obtaining the high-strength and high-barrier TPU composite material. The modified graphene oxide enables reaction sites of a reaction system to be increased; the crosslinking degree of the composite material is improved, and a large number of covalent bonds and hydrogen bonds exist in the prepared TPU composite material, so that the dispersity of the modified graphene oxide in a TPU matrix is good, the interface bonding force with the TPU matrix is enhanced, and the barrier property and the mechanical property of the TPU composite material are improved.

The invention provides a preparation method of a polyvinyl acetal solid electrolyte. The preparation method comprises the steps of respectively reacting polyvinyl formal or a homologue of polyvinyl formal and polyvinyl alcohol with boric acid, oxalic acid and lithium salt in an organic solvent system step by step, performing mixing in proportion, performing washing, suction filtration and drying, synthesizing high-purity polymer lithium salt with a lithium mono(oxalato) borate structure grafted on a polymer molecular chain, dissolving the high-purity polymer lithium salt in an organic solvent to form a settled solution, and finally preparing the solid electrolyte. The solid electrolyte prepared by the method has lithium ion migration number approximate to 1, excellent room-temperature conductivity greater than or equal to 10<-4>S/cm, a wide electrochemical stability window greater than or equal to 6V(vs.Li/Li<+>), outstanding thermal stability, high tensile strength greater than or equal to 35MPa, and excellent comprehensive performance for an all-solid battery system.

The invention relates to a preparation method of hydrophobic high-reinforcing white carbon black. According to the preparation method, a SiO2 wet gel is used as a raw material and A171 is used as a modifier to prepare the hydrophobic high-reinforcing white carbon black; and the modification temperature is 80-95 DEG C, the modification time is 60-150 min, the pH value of the modification solution is 2.2-3.1, and the use amount of the modifier is 2.2-3.4% of the total mass of the reaction solution. According to the present invention, the problems that the traditional white carbon black has many silanol groups on the surface and has poor compatibility with rubbers are solved through the white carbon black of the present invention, and the hydrophobicity of the traditional white carbon black is improved; with the application of the white carbon black of the present invention in the styrene-butadiene rubber, the processing performance of the rubber is improved, the vulcanization time of the rubber is reduced, the wear resistance, the tensile strength, the tensile stress at a given elongation, and other mechanical properties of the vulcanized rubber are improved, and the reinforcing property of the traditional white carbon black is improved; and the preparation method has advantages of simple process, good product stability, easy industrialization, and good technical economy.

The invention discloses a modified hindered phenol damping agent, and a preparation method and applications thereof. The modified hindered phenol damping agent is prepared via hyperbranched modification of hindered phenol with a N,N-dihydroxyethyl-3-amino methyl propionate monomer. The preparation method comprises following steps: hindered phenol, the N,N-dihydroxyethyl-3-amino methyl propionate monomer, and a catalyst are mixed at a certain ratio; and an obtained mixture is subjected to 7 to 9h of stirring reaction at 90 to 110 DEG C under inert gas shielding so as to obtain a finished product. A damping rubber material can be prepared by adding 5 to 10 mass parts of the modified hindered phenol damping agent into 100 mass parts of a rubber matrix. It is shown by experiments that the modified hindered phenol damping agent can be uniformly dispersed into the rubber matrix material, and is capable of improving damping performance, mechanical properties, and wear resistance of the obtained damping rubber material obviously.

The invention relates to a preparation method and an application application method of a metal-free catalyst used for fixed bed acetylene hydrochlorinate preparation of vinyl chloride. Compared with other metal-free catalysts prepared through dipping-calcining method, the metal-free catalyst used for fixed bed acetylene hydrochlorinate preparation of vinyl chloride possesses following advantages:the nitrogen content of the metal-free catalyst used for fixed bed acetylene hydrochlorinate preparation of vinyl chloride is increased through in-suit doping combined ammonia gas treatment; the catalyst specific surface area is increased effectively through calcining of a precursor with polytetrafluoroethylene at a certain heating program, and at the same time nitrogen sulfur codoping and oxidation are adopted to increase the ratio of active sites and the number of surface oxygen-containing function groups, so that the metal-free catalyst possesses relatively activity and selectivity in fixedbed acetylene hydrochlorinate preparation of vinyl chloride. The preparation method is green, and is friendly to the environment; the raw materials are widely available and cheap; the metal-free catalyst can be used for replacing toxic mercuric chloride catalyst; and the application prospect in industrialized production is promising.

The invention provides a flame-retardant wear-resistant polycarbonate material which is prepared from the following components in parts by weight: 100 parts of polycarbonate, 0.4-0.9 part of anti-ultraviolet agent, 0.5-1 part of antioxidant, 5-7 parts of compatilizer, 0.6-1.1 parts of stabilizer, 0.1-0.6 part of dispersing agent, 1-6 parts of plasticizer, 2-7 parts of toughener, 3-3.5 parts of organosilicon wax and 18-24 parts of modified composite wollastonite fiber. The invention also discloses a manufacturing method of the polycarbonate material. The polycarbonate material provided by the invention has high flame retardancy and wear resistance.

The invention provides a preparation method of a polymer-coated ardealite composite master batch, and relates to the technical field of hydrophobic modification of inorganic fillers and preparation of composite materials. The method comprises the following steps: calcining ardealite waste residue as a raw material in a gradient furnace, grinding and screening to obtain anhydrous ardealite, treating the anhydrous ardealite with sodium hydroxide and anhydrous sodium sulfate to obtain hydroxylated ardealite, carrying out surface modification on the hydroxylated ardealite with a modifier to obtain modified ardealite, and drying to obtain the modified ardealite. And carrying out in-situ suspension polymerization on the modified ardealite, a vinyl monomer and a reaction aid to prepare the hydrophobic polymer coated ardealite composite master batch. The polymer-coated ardealite composite master batch can be used as a filler in high polymer materials such as plastic or rubber, can significantly enhance molecular winding and interface interaction between the ardealite and a high polymer matrix, and significantly improves the comprehensive performance of a high polymer composite material. Meanwhile, the method has important significance on resource utilization of the ardealite, and the application range of the ardealite can be widened.

The invention belongs to the technical field of inorganic functional materials, and particularly discloses a high-length-diameter-ratio basic magnesium sulfate whisker and a preparation method thereof.The preparation method comprises the following steps that a sodium hydroxide solution is slowly dropwise added into a magnesium chloride solution, a sol-gel reaction is conducted at the constant temperature, and magnesium hydroxide sol is obtained; dissolving magnesium sulfate in an ethanol-water solution to prepare a magnesium sulfate alcohol-water solution; adding sodium ethylene diamine tetracetate into a magnesium sulfate alcohol-water solution, and stirring for dissolving; mixing the obtained magnesium hydroxide sol with a magnesium sulfate alcohol-water solution, and uniformly stirring to obtain a basic magnesium sulfate whisker precursor; and quickly transferring into a high-pressure reaction kettle, carrying out hydrothermal crystallization reaction, then cooling to room temperature, and carrying out suction filtration, washing and drying to obtain a basic magnesium sulfate whisker product. The basic magnesium sulfate whisker prepared by the method has the advantages of good crystallinity, high length-diameter ratio, good dispersity and the like, the yield of the whisker can reach 90%, the length can reach 500-1000 microns, the length-diameter ratio reaches 150-300 or above, and the basic magnesium sulfate whisker can be applied to various flame-retardant high polymer materials.

The invention provides antibacterial aluminum alloy and a preparation method thereof. The preparation method of the antibacterial aluminum alloy comprises the following steps that a modified nano TiO2 solution containing hydroxyl is prepared; hydroxylation treatment is conducted on the surface of the aluminum alloy, so that surface-activated aluminum alloy is prepared; and the modified nano TiO2 solution is coated onto the surface layer of the surface-activated aluminum alloy to prepare the antibacterial aluminum alloy. According to the method, hydroxylation treatment is conducted on the surface of the aluminum alloy, nano TiO2 can be chemically grafted onto the surface of the aluminum alloy to form a film layer with the long-acting antibacterial performance, and the antibacterial problem of the surface of the aluminum alloy is effectively solved; and the nano TiO2 can be firmly combined with the aluminum alloy for a long time, and the long-acting antibacterial performance and the service life of the antibacterial film layer are guaranteed. And meanwhile, the corrosion resistance of the aluminum alloy is greatly improved.

The invention relates to the technical field of microbial immobilization, in particular to a preparation method for a microbial carrier. A porous cotton straw is used as a template, EDTA (Ethylene Diamine Tetraacetic Acid) is taken as a guiding agent to improve the purity of hydroxy calcium phosphate, a porous high-capacity hydroxy calcium phosphate carrier is prepared, mosses are loaded on the surface of the porous high-capacity hydroxy calcium phosphate carrier to provide places and nutrition for the growth of microorganisms, and good mechanical performance and excellent biocompatibility of the hydroxy calcium phosphate are used for finally preparing the microbial carrier with high biological capacity. The defects of poor mechanical performance, low biocompatibility and small biological capacity of a common microbial carrier are eliminated, and the microbial carrier with the high biological capacity has a wide application prospect.

The invention discloses high-strength environment-friendly paper and a preparation method and application thereof. The preparation method of the high-strength environment-friendly paper comprises thefollowing steps: beating a bamboo pulp raw material to obtain SR bamboo pulp with the beating degree of 30-50 degrees; then pretreating the bamboo pulp or PLA fiber in a cationic guar gum solution; making paper from the pretreated bamboo pulp and the untreated PLA fiber, or the untreated bamboo pulp and the pretreated PLA fiber according to an absolute dry mass ratio of 7:3 to obtain the high-strength environment-friendly paper. According to the preparation method, through pretreatment in the cationic guar gum solution, the fiber strength of the bamboo fiber, the chemical polarity on the surface of the PLA fiber and the interfacial compatibility between fibers are improved, and ultimately, the physical properties of the paper are significantly improved. All used materials are environmentally friendly, and the obtained paper has relatively high strength and can be well applied to various fields of daily paper, food packaging paper and the like.