242results about How to "Low film forming temperature" patented technology

The invention provides a method for cladding surfaces of an active material of an anode and/or the anode and methods for manufacturing the anode and a battery. In the cladding method, an atomic layer deposition technology is adopted to deposit surface modification substances on the surfaces of the active material of the anode and/or the anode of a lithium battery. According to the invention, the cycle performance and the specific capacity of the lithium-ion battery can be improved obviously and electrode materials are more stable.

The present invention relates to controlled release pharmaceutical compositions comprising fumaric acid ester(s) as active substance(s). The compositions are suitable for use in the treatment of e.g. psoriasis or other hyperproliferative, inflammatory or autoimmune disorders and are designed to release the fumaric acid ester in a controlled manner so that local high concentrations of the active substance within the gastrointestinal tract upon oral administration can be avoided and, thereby, enabling a reduction in gastro-intestinal related side-effects.

The invention discloses a preparation method of a double-sided passivated crystalline silicon solar cell, belonging to the technical field of photovoltaic power generation. The preparation method comprises the following steps of: firstly, respectively carrying out surface precleaning and surface texturing on P-shaped single crystal silicon and a polycrystalline silicon wafer by adopting an alkaline solution and an acid solution; secondly, diffusing by using phosphorus oxychloride as a diffusion source to form a PN junction; thirdly, removing a phosphosilicate glass on the surface of the silicon wafer by adopting a chemical wet method, and etching the edge of the silicon wafer by adopting a plasma; fourthly, preparing a silicon nitride film on the surface of an emitting region of a P-type silicon wafer by adopting a plasma enhanced chemical vapor deposition method; fifthly, preparing a mixed phase film material of hydrogenated microcrystalline silicon and amorphous silicon by adopting a hot filament chemical vapor deposition method, depositing a film at one side of the P-type silicon wafer, and passivating the defects and a dangling bond on the surface of the P-type silicon wafer; and sixthly, sintering a screen printing back electrode and a screen printing positive electrode to form the solar cell. The invention lowers the probability of compounding photo-generated minority carriers on the back surface, enhances the long-wave light quantum efficiency and creates the conditions of transportation and collection of the photo-generated carriers.

The invention discloses a dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy anticorrosive coating and a preparation method thereof. Compositions of the coating mainly comprise dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy emulsion, anticorrosive pigment and filler, pigment dispersing agent, a film forming aid, a water-based additive, a cross-linking curing agent and deionized water, wherein the dendritic organic-inorganic hybrid water-borne nano polyurethane-epoxy emulsion is prepared by the following steps: prepolymerizing a polyurethane hydrophilic branch; preparing a dendritic polyurethane intermediate product by adopting hyperbranched synthesis technology; inoculating organic-inorganic hybrid into a nano material by adopting a in-situ polymerization; and simultaneously grafting epoxy resin with hydroxyl; and the prepared emulsion is compounded with the anticorrosive pigment and filler and the like to prepare the anticorrosive coating. The anticorrosive coating radically solves the VOC pollution problem of solvent-type anticorrosive coating, and simultaneously solves a series of problems such as poor roughness, weatherability, ageing resistance, alkali resistance and solvent resistance of the conventional water-borne anticorrosive coating.

The invention discloses a water-based polyurethane composite emulsion and a preparation method thereof. The preparation method is characterized by comprising the following steps: by using acetone or butanone and acrylic monomer as solvents, polymerizing diisocyanate (HDI), isophorone diisocyanate (IPDI), mixed polyester polyalcohol, dihydroxymethylpropionic acid, 1,4-butanediol, trimethylolpropane monoene propyl ether, 2-hydroxypropyl acrylate and 2-hydroxyethyl acrylate to obtain carboxylic polyurethane; neutralizing with tertiary amine, and removing the solvents to obtain a self-emulsified double-bond-containing water-based polyurethane anionic emulsion; and by using the emulsion as a seed, adding acrylate monomer and a right amount interpenetrating-network crosslinking agent monomer to carry out pre-emulsification, and carrying out seed emulsion polymerization to obtain the composite emulsion in an interpenetrating network structure. The invention has the advantages of energy saving, environmental protection, high early bonding force, safe and reliable technique and stable product quality.

The invention provides room temperature self-crosslinking water-based paint as well as a preparation method and an application thereof. The paint has high hardness, high scrubbing resistance and good diffuse reflection performance. The preparation method of the paint comprises the following steps: performing graft modification on alkaline silica sol by utilizing a silane coupling agent containing unsaturated double bonds, thereby obtaining nanosilicon dioxide of which the surface is provided with the unsaturated double bonds; by taking the nanosilicon dioxide as a seed, mixing an acrylate monomer and an epoxy resin in the presence of an initiator, and preparing the room temperature self-crosslinking acrylate emulsion which is subjected to epoxy resin and inorganic particle double modification and has a core-shell structure by utilizing a semi-continuous seeded emulsion polymerization process; and by taking the emulsion as a base material, adding a delustering agent, glass powder, body pigment and paint aids, thereby obtaining the room temperature self-crosslinking water-based paint. The paint is coated on the wall surface or board and can be simultaneously taken as a writing board of a doodling pen and a projection screen of a projector, and the problem that the teaching board and the projection screen are independent from each other and cannot be simultaneously used in the prior art is solved.

The invention provides waterborne rusted paint, which mainly comprises transforming agent, transformation accelerator, water, film-forming additives, freeze-thaw stabilizer, ethylene-propylene emulsion, thickener, defoamer and preservatives. The invention also provides a method for preparing the waterborne rusted paint. The waterborne rusted paint has the characteristics of low film-forming temperature, good storage stability, good film properties, high film water resistance and the like, and completely meets the antirust protection requirements of the shipbuilding industry, petroleum industry, machinery industry, construction industry and other various industries needing steel antirust protection.

The invention relates to a method to prepare a new hydrophilic coating for outside wall containing nmself-crosslinking acrylic ester latices and nm inorganic powder. Its dispensation is:nm indoor crosslinking acrylic ester latex(5-40%), indoor crosslinking acrylic ester latex(20-50%),inorganic nm powder(0.1-20%),inorganic filler(10-50%),film-forming assistant(0.05-5.0%) and the other is water without ion. Its preparing method is:firstly use high speed dispersion and sand grinding method to prepare nm disperseion and filler color which are then mixed with nm self-crosslinking acrylic ester latex and general acrylic ester latex, add into assistant and stir them by media-low speed for 0.5-1.5h,filter and package. The coating has good stability and film-forming performance,strong adhesive force and resistance to pollution, outstanding thermo insulating property, as well as self-cleaning performance.

The invention discloses a bionically designed waterborne polyacrylate modified polyurethane composite emulsion and a preparation method thereof. The method is characterized by: using acetone or butanone and acrylic monomer as the solvent, subjecting diisocyanate HDI and IPDI, mixed polyester polyol, dimethylolpropionic acid, 1, 4-butanediol, trimethylolpropane monoallyl ether, hydroxypropy, and hydroxyethyl acrylate to polymerization to obtain polyurethane with carboxyl, and conducting neutralization with tertiary amine, removing the solvent to obtain self-emulsifying waterborne polyurethane anionic emulsion containing double bonds; then taking the emulsion as seed, adding acrylate monomer, dopamine methacrylamide and a proper amount of crosslinking agent monomer to carry out pre-emulsification, then performing seeded emulsion polymerization to obtain the bionically designed waterborne polyacrylate modified polyurethane composite emulsion. The composite emulsion provided by the invention has the advantages of energy saving and environmental protection, adaptation to various material surfaces, safe and reliable process, and stable product quality.

An acrylate emulsion containing fluorine nuclear shell, its production and use are disclosed. The process is carried out by reacting maleic anhydride with alkyl phenolic polyethenoxy ether, regulating to indifference by sodium carbonate, copolymerizing for reactive emulsion and 2-4 kinds acrylate proportionally, adding into 2-4 kinds acrylate and methyl-acrylic dodecafluoptyl esters while polymerizing nuclear monomer, reacting for 1-4hrs and drying for 10mins. It has excellent weather-resistance, water-proof and anti-fouling performances and costs low.

The invention relates to a nuclear shell type long-acting antibacterial emulsion. The nuclear shell type long-acting antibacterial emulsion comprises the following raw material components: water, n-butyl acrylate, isobutyl acrylate, isooctyl acrylate, styrene, methyl methacrylate, vinyl acetate, guanidinium oligomer macromonomers, an emulsifying agent, an initiating agent, a cross-linking agent and sodium bicarbonate. The preparation method comprises the following steps: preparing each raw material component; adding water, the emulsifying agent and isooctyl acrylate into a reactor, stirring, heating to 60-70 DEG C, adding the initiating agent to initiate reaction, and after the emulsion becomes blue, maintaining for 60-120 minutes, so as to obtain a nuclear layer emulsion; maintaining the temperature at 70-80 DEG C, adding n-butyl acrylate, heating to 81-85 DEG C, maintaining the temperature, cooling, and discharging, so as to obtain the nuclear shell type long-acting antibacterial emulsion. According to the preparation method, guanidinium and guazatine oligomers are taken as antibacterial functional groups, and guanidyl serves as a main antimicrobial group, has an obvious antibacterial effect and is very safe to human bodies. The preparation method for the nuclear shell type long-acting antibacterial emulsion is simple, rapid, environmentally friendly and suitable for industrial production, and the operation is easy.

The invention discloses a preparation method of a modified polyvinyl acetate emulsion adhesive. The preparation method includes: adding reaction agents including, by mass, 56.5-70% of vinyl acetate, 4-10% of plasticizer, 20-30% of modifier, 2-4% of dispersant, 0.9-2% of initiator, 2-4% of emulsifier and 0.3-1.0% of PH adjuster for emulsion polymerization. The invention further provides the adhesive prepared by the method. The adhesive is nontoxic and harmless, can realize adhesive effect and meets standards of chemical industry, waterproofness and cold resistance of polyvinyl acetate are improved, and using range of the emulsion adhesive of polyvinyl acetate is widened.

The invention discloses a laminated organic electroluminescent device, which comprises a pair of electrodes and an organic luminescent medium arranged between the electrodes. The organic luminescent medium comprises at least two luminescent units. A connection layer is arranged between the luminescent units. The connection layer comprises at least one selected from compounds in the general formula I or II, wherein Ar is mid-condensed-nuclei aromatics of which the number of carbon atoms is selected from 6 to 30, or mid-fused-heterocycle aromatics of which the number of carbon atoms is selected from 6 to 30; n is an integer selected from 2 to 4; and alkali metal materials or alkali metal compounds are simultaneously doped. The device connects two or more than two luminescent units together so as to play a role as a charge generation layer. The device with N laminated luminescent units is N times the current efficiency of a single luminescent-layer device, and gains certain improvement of power efficiency as well. In addition, compared with the prior laminated device, the connection-layer material selected by the electroluminescent device has the advantages of lower film-forming temperature and relatively simple preparation process.

The invention discloses a water-borne wood paint, and a preparation method thereof. The water-borne wood paint is prepared from following raw materials: a resin, a pigment, a filling material, an auxiliary agent, and water, wherein the resin is a mixed resin of water-based acrylic resin and acrylic acid modified waterborne polyurethane resin, or a mixed resin of water-based acrylic resin and waterborne polyurethane resin. The water-borne wood paint is high in strength, possesses excellent chemical resistance, gloss retention, colour retention, and base material permeability, high transparency; obtained films possess water resistance, boiling water resistance, low film forming temperature, and excellent levelling properties; after-tack is not caused; solid content is high; a plurality of steps are avoided; the water-born wood paint is dried quickly at normal temperature; the obtained films are flat and well-rounded; polyurethane paint possesses excellent adhesive force and wear resistance, and is bright and well-rounded, so that the water-born wood paint can be used for painting as a wooden floor paint.

The invention specifically relates to water-based lotus-leaf-structured hydrophobic over-printing varnish for wallpaper and a preparation method of the over-printing varnish, and belongs to the technical field of ink. The technical problem to be solved is to provide an over-printing varnish by using which the surface of a wallpaper product can be smooth, bright and wear-proof and the lotus leaf type waterproof and moisture-roof effects can be realized, and a preparation method of the over-printing varnish. In order to solving the technical problem, the technical scheme adopted is as follows: the water-based lotus-leaf-structured hydrophobic over-printing varnish for the wallpaper is prepared from raw materials including a modified organic silicon polymer emulsion, a non-film-forming acrylate emulsion, an styrene-acrylic emulsion, neutralizing amine, propylene glycol, a water-based coalescing agent, a water-based leveling wetting agent, a mineral defoamer, a water-based nanoscale organosilicon waterproofing agent, a waterborne polyurethane thickening agent, deionized water and an organic silicon defoamer; the raw materials are stirred and mixed in a specific order to form the over-printing varnish.

The invention discloses a preparation method of acrylic acid organic silicon soap-free copolymerization emulsion. Unsaturated monomers, organic silicon, a reactive emulsifier, an initiator and water are adopted as raw materials, temperature of a reaction kettle is controlled by virtue of core-shell polymerization and soap-free polymerization technologies, then treatment is carried out for removing residual monomers, and a neutralizing agent is added for neutralization, so that emulsion is obtained. By virtue of the soap-free polymerization technology, better water white resistance can be realized with less expensive organic silicon monomer, and water absorption of a paint film is reduced. By virtue of the core-shell polymerization technology, a core layer with high glass transition temperature and a shell layer with lower glass transition temperature are obtained, so that synthetic emulsion has lower film formation temperature under the condition that the average glass transition temperature is the same with a homopolymerization technology, usage amount of a coalescing agent is reduced, and influence of solvent volatilization on atmospheric environment is reduced. The acrylic acid organic silicon soap-free copolymerization emulsion product does not contain a free emulsifying agent, so that influence of the acrylic acid organic silicon soap-free copolymerization emulsion product on the environment is greatly reduced, and the acrylic acid organic silicon soap-free copolymerization emulsion product is environmentally friendly; and the acrylic acid organic silicon soap-free copolymerization emulsion has excellent weather resistance, water resistance and pollution resistance.

The invention relates to a terpolymer-modified neoprene latex adhesive and a preparation method thereof. The adhesive comprises the following components in parts by weight: 100 parts of neoprene latex, 10-90 parts of methyl methacrylate, 10-90 parts of butyl acrylate, 0.5-8 parts of emulsifier, 0.2-5 parts of catalyst, 10-50 parts of tackifying emulsion, 0.5-2 parts of anti-aging agent, 0.5-4 parts of thickener, 0.1-1 part of preservative and 2-8 parts of zinc oxide. The prepared adhesive has obviously lower film-forming temperature and higher initial viscosity, and satisfies the operating requirements of various climates. By adopting the redox catalytic system, the adhesive has the advantages of low synthesis temperature and high grafting ratio.