32results about How to "Weak polarity" patented technology

The invention provides a carbon coating method of a non-carbon negative electrode material, which relates to the technical field of material preparation. The carbon coating method of the non-carbon negative electrode material comprises the following steps: (A) a first carbon layer is coated on the surface of the non-carbon negative electrode material by a vapor phase coating method to obtain a precursor; B) coat a second carbon layer on that surface of the precursor by a liquid-phase coat method to complete the carbon coating of the non-carbon negative electrode material. The carbon coating method can alleviate the technical problem that the uniformity of the carbon coating layer is poor when the liquid phase coating method is directly used for the carbon coating of the non-carbon negativeelectrode material.

The invention relates to the technical field of soft package materials for lithium battery packaging, particularly to an aluminum-plastic film for lithium battery packaging and a preparation method thereof. The aluminum-plastic film comprises a polyurethane fiber layer, an aluminum foil layer and a polypropylene heat-sealing layer from top to bottom, wherein the aluminum foil layer is attached tothe polypropylene heat sealing layer; polyurethane fibers are attached to the aluminum foil layer; the polyurethane fiber layer and the aluminum foil layer are bonded through a modified polyolefin adhesive; and the aluminum foil layer and the polypropylene heat-sealing layer are bonded through a polyurethane adhesive. The modified polyolefin adhesive is prepared from the following raw materials inparts by weight: 1 to 5 parts of alpha-methylstyrene dimer, 1 to 3 parts of dibenzoyl peroxide, 15 to 25 parts of modified epoxy resin, 20 to 30 parts of polyolefin, 1 to 5 parts of a curing agent, 0.5 to 3 parts of an antioxidant, 1 to 3 parts of a defoaming agent, 1 to 5 parts of a cross-linking agent and 20 to 40 parts of a solvent. The aluminum-plastic film provided by the invention has excellent barrier property, ductility and corrosion resistance, and also has good heat-sealing sol aluminum leakage prevention effect.

Provided are a hybrid supported metallocene catalyst, a method for preparing the same, and a process for preparing an olefin polymer using the same, and more particular, a hybrid supported metallocene catalyst characterized in that two kinds of metallocene compounds containing a new cyclopenta[b]fluorenyl transition metal compound are supported on an inorganic or organic porous carrier surface-treated with an ionic compound and a co-catalyst, a method for preparing the same, and a process for preparing an olefin polymer using the hybrid supported metallocene catalyst.

The invention discloses a preparing method of an alignment film, a displaying panel and a displaying device. The preparing method of the alignment film comprises the steps of coating a segmented copolymer solution of polyimide on a displaying basal plate, wherein the segmented copolymer is polymerized by two or more kinds of polymers with different polarities; controlling the segmented copolymer to conduct self-assembly in sequence on the displaying basal plate to form a multilayer alignment layer which is layered by various polymers, wherein the polarity of the alignment layer on each layer decreases progressively according to a sequence in which the distances of the alignment layers to the displaying basal plate are from near to far. According to the preparing method of the alignment film, the multilayer alignment film which has a remarkable layered interface can be obtained, the technique is simple, problems of a complex technique and easy introduction of ion impurities brought by using a layer-by-layer preparation to prepare a multiple alignment layer are avoided, in addition, the polarity of the alignment layer on each layer decreases progressively according to the sequence in which the distances of the alignment layers to the displaying basal plate are from near to far, thus preventing the ion impurities in the displaying basal plate from entering a liquid crystal layer.

The invention relates to nano metal ink and a preparation method thereof. The nano metal ink is prepared from components in percentage by mass as follows: 3%-60% of conductive nano metal, 35%-94% of an organic solvent, 0.5%-15% of a stabilizer and 2%-40% of cycloalkane alcohol additives. The nano metal ink is prepared from organic acid with carbon atom number being 7-18 and/or organic amine as thestabilizer, the organic solvent and the cycloalkane alcohol additives by compounding, the viscosity range is 2 cP-10 cP, the surface tension is 25 mN/m-50 mN/m, and the nano metal ink is suitable forink-jet printing for film formation; the organic solvent, the stabilizer and the cycloalkane alcohol additives can be removed in a drying film formation process, residues are removed, the film formation is uniform, low-temperature sintering can be realized, volume resistivity is relatively low, and satellite points are avoided during ink-jet printing.

The invention discloses a preparation method of a special formaldehyde-removing paint for furniture. The method comprises the steps of mixing polyalkylene imide, polypropylene glycol and a helical carbon fiber at the ratio and then preparing a formaldehyde trapping agent; mixing with water for ultrasonic dispersion, carrying out vacuum drying on a rotary evaporator and crushing the mixture into 500 meshes; and finally carrying out mix dispersion on the product and a wood coating, painting or spraying the paint on the surface of the furniture through a spray gun and drying and polishing. The special formaldehyde-removing paint for the furniture is excellent in purification effect due to the fact that the helical carbon fiber is low in molecular weight, relatively weak in polarity and over-large in specific surface area; the formaldehyde trapping agent is evenly dispersed into the paint, and paved on the surface of the furniture, so that the special formaldehyde-removing paint is large in absorption acting surface, short in absorption time, good in absorption effect and convenient to use.

The invention relates to the technical field of the dual-photon fluorescence probe, and specifically relates to an application of the dual-photon fluorescence probe. The dual-photon fluorescence probeis applied to the cell and tissue imaging and used for detecting lipid raft content and distribution dynamic; the probe can improve the accuracy, precision, sensitivity and imaging resolution of thelipid raft detection, thereby providing a new thought for further preventing and controlling Alzheimer's disease and Prion Disease and like neurodegenerative diseases.

The invention relates to the technical field of analysis and detection of tobacco flavors, in particular to a tobacco flavor characteristic component analysis method and a pretreatment method thereof. The pretreatment method for characteristic component analysis of the tobacco flavor comprises the following steps: dissolving the tobacco flavor with a solvent to prepare a flavor diluent; carrying out adsorption treatment on the perfume diluent by adopting macroporous adsorption resin; carrying out supercritical elution on the macroporous adsorption resin subjected to adsorption treatment, and collecting eluent, so as to obtain the pretreated tobacco flavor liquid. According to the pretreatment method, the tobacco flavor is dissolved without being limited by a solvent and a material-liquid ratio; by utilizing the extraction and carrying capacities of fluid carbon dioxide extraction, the obtained aroma components are comprehensive, the enrichment efficiency is high, and the method is environment-friendly and non-toxic; the using amount of an eluent is small, the obtained eluent does not need to be concentrated, the loss of flavor components is effectively avoided, and the concentration of the flavor components is high; the use of a large amount of organic solvents is avoided, the method is environment-friendly, the extract liquor is free of impurities, and the pollution to instruments is reduced.

The invention belongs to the technical field of building materials, in particular to a preparation method for a composite fireproof door core board. According to the preparation method, after being emulsified, liquid paraffin is mixed with emulsified acrylic acid, and thermoplastic resin, the modified emulsified liquid paraffin, magnesium-containing fiber pulp, diatomite matrix fireproof filling and desulfurated gypsum powder are mixed and preheated to finally obtain the composite fireproof door core board. The diatomite matrix fireproof filling fills in wood pulp fibers, so that the binding action of magnesium salt cement and the wood pulp fibers is enhanced, and the strength of the fireproof door core board is increased; a large amount of ammonium polyphosphate fills in diatomite pores in the diatomite matrix fireproof filling, so that the fireproof performance of the fireproof door core board is improved; the liquid paraffin is emulsified with a surface active agent, so that the damp-proof performance of the fireproof door core board is enhanced; taking resin glue as dipping glue, the fireproof door core board is not liable to erode by dampness; melamine does not contain carbon,so that the fireproof performance is high; and under the micro-pore absorption action of diatomite, the liquid paraffin cannot seep from the fireproof door core board, so that the fireproof door coreboard has lasting damp-proof performance, keeps the size stability of the fireproof door core board, and has a broad application prospect.

The invention relates to a high-adhesion odor-removing water-based vacuum plastic emulsion and a preparation method thereof. The main component of the high-adhesion odorless water-based vacuum plasticemulsion is an imidazolyl propionate modified polyurethane compound, imidazolyl propionate has strong surface affinity with low surface tension, the rigidity is large, cohesive energy is high, and high adhesion force can be provided; residual acrylate, imidazole and derivatives thereof are subjected to an addition reaction in the synthesis process; obtained odorless, odorless and non-volatile small molecules can be used as a wetting agent to be rapidly spread on the surface of a base material, meanwhile, one end of the small molecules serving as an interface agent closely acts on the base material, the other end of the small molecules is combined with a polymer containing an imidazole structure, and the adhesive force of the polymer on the surface of the base material is improved. The water-based vacuum plastic emulsion is solvent-free, odorless, high in binding power and simple and convenient in post-treatment.

The invention provides an environment-friendly release agent for a refractory material. The release agent comprises the following components in parts by mass: 80-150 parts of a hydrogen-containing organic silicon monomer, 50-70 parts of a polyether monomer, 2-5 parts of a silicon benzyne monomer, 0.02-0.04 part of a catalyst, 20-50 parts of a plasticizer and 1-2 parts of a coupling agent. The silicon benzyne monomer is any one or a mixture of more than two of n-dodecyl triphenylethynyl silane, n-octadecyl triphenylethynyl silane, n-tetradecyl triphenylethynyl silane and n-hexyl triphenylethynyl silane. The release agent is good in temperature resistance, can be suitable for construction environments with low temperature in winter and high temperature in summer, and can also be suitable forspecial environments with high-temperature steam and the like. When the environment-friendly release agent is used, the environment-friendly release agent and waste engine oil are mixed for use, resources can be saved, the environment is protected, the cost is reduced, the release performance is excellent, the mold surface is smooth, and the sample has flat surface.

The invention belongs to the technical field of building material preparation, and particularly relates to a preparation method of a decorative plate. The preparation method comprises the following steps: emulsifying white mineral oil, mixing the emulsified white mineral oil with emulsified acrylic acid, mixing thermoplastic resin, modified emulsion, fiber pulp, flame-retardant filler and desulfurized gypsum powder, and preheating to finally obtain the composite decorative plate. The flame-retardant filler is filled into wood pulp fibers by a method of adding the flame-retardant filler into the pulp, and the main component of diatomite is silicon dioxide, so that the fireproof performance is improved; pores of the diatomite in the flame-retardant filler are filled with a large amount of ammonium polyphosphate, so that gas-phase combustion is inhibited, and the flame-retardant and fireproof performance of the decorative plate is improved; the surfactant emulsion is used, so that the moisture resistance of the decorative plate is enhanced; the decorative plate takes resin glue as impregnation, so that the fireproof performance is high; the decorative plate is directly decomposed andsublimated under a high-temperature condition, and a large amount of smoke is not generated during combustion; the main part of white mineral oil is of a straight-chain alkane structure, so that the waterproof performance is improved; the decorative plate has lasting moisture resistance and a wide application prospect.