191results about How to "Improve wetting ability" patented technology

The invention relates to the technical field of soldering pastes, in particular to a halogen-free tin-bismuth-copper soldering paste and a preparation method thereof. A soldering flux of the halogen-free tin-bismuth-copper soldering paste consists of the following components in percentage by weight: 20 to 40 percent of polymerized rosin, 1 to 6 percent of rosin amine, 4 to 8 percent of thixotropic agent, 5 to 10 percent of organic acid, 5 to 10 percent of organic amine, 1 to 5 percent of antioxidant, 0.5 to 3 percent of surfactant and an organic solvent. The halogen-free tin-bismuth-copper soldering paste is mainly characterized by adopting the organic acid and the organic amine serving as activating agents and comprising no halogens at all, so not only the solderability is not reduced, but also the expansion rate and the insulation resistance value of the soldering paste are improved, and simultaneously the corrosivity of residues after soldering to a base material is reduced and the service life of the soldering paste is prolonged; and particularly, the peak temperature of the soldering paste during soldering is lower in favor of reducing the thermal damages to electronic components.

The invention discloses a corrosion proof impregnating varnish used for water-based metal components and a manufacturing method thereof. The corrosion proof impregnating varnish is made of de-ionized water, propanediol, dispersant, antifoaming agent, wetting agent, carbon black, iron oxide black, water borne acroid resin, water borne epoxy resin, dipropylene glycol butyl ether, propylene glycol ether and polyaniline water solution, polyaniline carrier particles or polyaniline emulsion. The manufacturing method comprises: the propanediol and the de-ionized water are mixed and stirred, and then added with the dispersant, the antifoaming agent, the wetting agent and the polyaniline water solution or the water solution of emulsion or carrier particles to be evenly mixed together; the carbon black and the iron oxide black are added in to the mixed solution to form uniform pigment paste which is then put into a blending tank after being ground to be evenly stirred; the obtained mixture is added with the water borne acroid resin, the water borne epoxy resin, the dipropylene glycol butyl ether and the propylene glycol ether to be stirred; finally, the stirred mixture is added with the de-ionized water to be diluted and ground. The invention has the advantages of high coating efficiency, stable coating quality, uniform paint film of dip coating, flat and smooth paint film, good hardness, strong adhesive attraction, good corrosion proof performance, excellent painting performance at edges and corners, no leaking painting, good salt mist resistance, environmental protection, low cost, etc.

The invention discloses a water-based automotive paint, and a preparation method and an application method thereof. The water-based automotive paint is prepared from water-based castor oil-modified alkyd resin, water-based acrylic resin, water-based color paste, amino resin A, amino resin B, a coalescing agent, deionized water, a dispersing agent, a wetting agent, a pH regulator, a defoamer, anti-settling pulp, a corrosion remover, a thickener, an adhesion promoter and a flatting agent. The preparation method refers to orderly adding the raw materials to evenly agitate. The application method comprises the following steps: evenly mixing and stirring the water-based automotive paint and water according to the ratio of 1:(0.1-0.3), and then spraying, placing, baking and solidifying, so as to obtain a stoving varnish coating. A solvent stoving varnish is replaced by using the water-based automotive paint disclosed by the invention; a complete coating, of which the adhesive force is 0 level, and the flexibility is 1mm, which is excellent in weather fastness, high in fullness, and vivid in color and luster, and has excellent protectiveness and decorative property can be formed on the metal surface; the water-based automotive paint is safe in production procedure, environment-friendly, simple, and environment-friendly and convenient in construction.

The invention provides a preparation method modified calcium carbonate. The preparation method includes: mixing and crushing calcite and talcum, performing dry grinding to obtain raw slurry with solid content being 70-75%, performing constant-temperature stirring and grinding to obtain processed slurry with average particle size being 0.9-1.1 micrometers, adding naphthalene sulfonate type anti-precipitation agent and anionic surfactant into the processed slurry to perform liquid-phase dispersing, drying, collecting, depolymerizing and dispersing, adding brightener and liquid surface modifier to perform wrapping treatment, and stirring to obtain the modified calcium carbonate. By the preparation method, the modified calcium carbonate which is good in printing performance, good in dispersity, good in surface brightness and applicable to films adhered to car bodies can be prepared.

The invention relates to an oil base drill chip processing method, belongs to the field of environment protection, and particularly belongs to the technical field of drilling waste processing in oil and natural gas industry. The method comprises the following steps of: (1) demulsification: adding demulsifying agents accounting for 0.4 percent to 1.0 percent of the mass of oil base drill chips into the oil base drill chips in a stirring state; (2) cleaning: adding a non-ionic surfactant solution accounting for 10 percent to 30 percent of the mass of the oil base drill chips and an anionic surfactant solution accounting for 20 percent to 30 percent of the mass of the oil base drill chips into the demulsified oil base drill chips in the first step in the stirring state to obtain an oil-water-solid mixture; (3) separation: carrying out centrifugal separation on the mixture in the step (2); and (4) processing by hydrocarbon degradation bacteria: regulating the pH of the separated oil base drill chips and then adding nutrients, nutrient providers, bulking agents and the hydrocarbon degradation bacteria. The method has the advantages that the oil recovery rate is higher than 94 percent; the oil content of the drill chips is less than 0.3 percent; the operation is simple; the equipment investment is low; and reclamation and harmlessness are realized.

The present invention relates to the technical field of carbon fiber sizing, and more particularly relates to an aqueous polyurethane sizing agent and a preparation method thereof. The aqueous polyurethane sizing agent comprises the following ingredients by weight: 5-25 parts of aqueous polyurethane emulsion and 75-95 parts of deionized water. The preparation method of the aqueous polyurethane sizing agent comprises the steps of: (1) preparing an aqueous polyurethane prepolymer; (2) adding deionized water to the aqueous polyurethane prepolymer to obtain an aqueous polyurethane emulsion; and (3) adding deionized water into the aqueous polyurethane emulsion by weight ratio, and stirring evenly to obtain an aqueous polyurethane sizing agent. The aqueous polyurethane sizing agent provided by the present invention has good dilution stability, increases the wetting ability of sizing agent for carbon fiber, is more conducive to adhering to the surface of the carbon fiber, so that the carbon composite fiber material shows better mechanical properties.

The invention relates to the technical field of environmental protection, and particularly relates to an environment-friendly wetting-type dust suppressant and a preparation method thereof. The environment-friendly wetting-type dust suppressant disclosed by the invention comprises the following raw materials: a mixed surfactant, a fluorine-containing and/or organic silicon-containing surfactant, apenetrating agent and water, wherein the mixed surfactant is a mixture of a nonionic surfactant and an ionic surfactant. According to the environment-friendly wetting-type dust suppressant disclosedby the invention, the surfactants in the raw materials are all green, environmentally friendly and degradable, so that relatively high biodegradability is achieved, high wettability and permeability are achieved, dust suppression efficiency is high, and dust suppression requirements under various dynamic dust raising working condition environments can be met.

The invention discloses a pathological specimen processing method and belongs to the field of specimen processing technology. According to the processing method, sampled pathological tissues successively undergo fixation, dehydration, transparency, wax impregnation, embedding, slicing, staining and mounting so as to obtain a pathological specimen. The fixation is to fix the pathological tissues by the use of a fixative for 4-15 h. The fixative is composed of atractylol, ethoxylated acetylenediol, chlorogenic acid, polyvinylpyrrolidone, sodium chloride, ethyl acetate and pure water. The mounting is to carry out mounting on the stained pathological tissues by the use of a mixture of polyacrylamide, polyvinylpyrrolidone and xylene. According to the invention, toxicity of reagents used in the invention is obviously reduced, the fixation effect is good, degradation and transparency degree are easy to control. Then, the tissues are not easy to deform, embrittle or harden, and mounting is complete and staining is remarkable.

The invention belongs to the technical field of lithium batteries, and particularly relates to a high-temperature-resistant coating modified separator as well as a preparation method and application thereof. The modified separator provided by the invention is formed by coating a single surface or double surfaces of a base membrane with a coating material, wherein the coating material comprises a temperature-sensitive high-temperature-resistant polymer, a binder and nano ceramic; the temperature-sensitive high-temperature-resistant polymer is obtained by a polymerization reaction of a bismaleimide monomer and an amine monomer with multiple reaction functional groups. The modified separator prepared by the invention has the advantages of high temperature sensitivity, strong electrolyte wettability, high safety, high temperature resistance and the like, and can greatly improve the use safety and prolong the service life of the lithium ion battery when being used for preparing the lithiumion battery.

The invention relates to a titanium micro/nanometer double-structured dioxide thin film with high biological activity and a preparation method thereof, and belongs to the field of biomedical materials and surface engineering. The preparation method of the thin film comprises steps of: micro-arc oxidizing a cleaned titanium metal surface, and utilizing a lithium tetraborate aqueous solution as an electrolyte and a bipolar pulse micro-arc oxidation power supply as a power supply, wherein the working voltage is 360-500V, the current density is 1-4A/dm<2>, the impulse frequency is 400-700Hz, the duty ratio is 10%-30%, and the oxidation time is 1-30 minutes. The obtained thin film has a structure that homodisperse micron-order grooves and nanometer-order holes are distributed on the surface of the whole thin film in an overlapping manner. The micro/nanometer double-structured dioxide thin film has a special performance, i.e. the film has superstrong wetting ability, and the contact angles of the water and oil are zero. The film has an important meaning on a new generation of a dental implant which can bear large occlusal force and has a short healing phase. The preparation method is simple, the electrolyte is pollution-free, and the film is easy for large-scale production and industrial popularization.

The invention relates to a high-efficiency environment-friendly LED chip cleaning agent and an application method, belonging to the field of electronic cleaning of photoelectron devices. The cleaning agent is prepared from the following components by weight percent: 1 to 10 percent of alkynediols surfactants, 0.1 to 5 percent of fluorocarbon surfactants, 2 to 10 percent of imidazoline ampholytic surfactants, 3 to 20 percent of emulsifiers, 0.5 to 5 percent of corrosion inhibitors, 1 to 5 percent of chelating agents, 1 to 5 percent of solubilizers, and 40 to 91.8 percent of ultrapure water. The cleaning agent contains the alkynediols surfactants, so that the moisturizing capacity is extremely high, and dirt such as polishing wax, grinding cream and the like on the surface of a chip can be rapidly stripped and dissolved. The cleaning agent contains the imidazoliine ampholytic surfactants, so that a layer of molecular film can be formed on the surface of the chip so as to protect the surface of a chip electrode, and to prevent the electrode from being secondarily polluted or corroded. The cleaning agent is mainly used for cleaning residues such as the polishing wax, the grinding cream, organic contaminants, solid particles and the like, on the surface of the polished LED chip, contains no phosphate, and can completely substitute the existing acid pickling process. The cleaning agent is also suitable for cleaning other workpieces.

The invention belongs to the technical field of anticorrosive coatings, and discloses a permeation consolidation type solvent-free epoxy anticorrosive coating, and a preparation method and an application thereof. The anticorrosive coating consists of a component A and a component B. The component A consists of the following components in parts by weight: 18-89 parts of epoxy resin, 5-50 parts of enhanced type reactive solvents, 5-60 parts of permeation type reactive solvents, 0-5 parts of interfacial modifiers and 0-3 parts of permeation enhancers. The component B consists of the following components in parts by weight: 5-95 parts of functional curing agents, 0-30 parts of curing regulators, 0-50 parts of double-function regulators, 0-40 parts of curing accelerators and 0-5 parts of condensation catalysts. The coating is low in viscosity and excellent in permeability, and has an excellent mechanical property after being cured. In addition, the permeation consolidation type solvent-free epoxy anticorrosive coating disclosed by the present invention has good wettability and viscocity with concrete, and strength of the concrete can be improved, water on the surface of the concrete can be removed, and surface corrosion factors of the concrete are reduced.

The invention belongs to the technical field of control for coal flow flying dust and particularly relates to a coal flow dust suppressant as well as a preparation method and an application thereof. The coal flow dust suppressant comprises components in parts by weight as follows: starch-grafted acrylic polymer, a surfactant and water. The coal flow dust suppressant has good coagulation property,wettability and permeability, dust particles are wetted rapidly and coagulated together, grain size and weight of the dust particles are increased, meanwhile, the coal flow dust suppressant can rapidly permeate into the coal flow, and the dust suppression effect is realized. According to the coal flow dust suppressant, the technical defect of low dust suppression speed of a traditional dust suppressant can be effectively overcome.

The invention provides a novel 4Al3 aluminum alloy used for vacuum soldering, which can solve the problems of high soldering temperature and undesirable soldering quality of the traditional 4Al3 aluminum alloy used for vacuum soldering, and can solve the problem that a surface oxide film of a workpiece can be removed only by Mg-contained soldering flux by the 4Al3 aluminum alloy to carry out vacuum soldering, and the vacuum soldering technology can be simplified. The novel 4Al3 aluminum alloy is characterized by comprising the following raw materials according to 100 parts by weight: more than 8.2-9 parts of Si, 0-6 parts of Fe, 0-0.2 part of Cu, 0-0.2 part of Mn, 0.08-0.2 part of Mg, 0-0.2 part of Zn, 0-0.15 part of Ti, 0-0.15 part of other impurity trace elements and the balance of Al.

The invention discloses a preserving stationary liquid for pathological tissues, and belongs to the technical field of sample processing. The preserving stationary liquid for pathological tissues is prepared from 12 to 15g of menthol, 10 to 20g of glycerin, 5 to 10ml of ethoxylation acetylenediol, 10 to 20g of chlorogenic acid, 30 to 70g of polyvinylpyrrolidone, 30 to 40g of sodium chloride, and 1000ml of pure water. The preserving stationary liquid for pathological tissues has the advantages that the formaldehyde solution is completely replaced; the property is stable, any toxic or side effect is avoided, the softness and hardness are proper after the pathological sample is subject to stationary treatment, the obvious shrinkage and hardening are avoided, the toughness is good, and the obvious deformation and discoloring are avoided; in the stationary process, the stationary liquid has no turbid or settling phenomenon.

The present invention discloses an environmental-protection lubricating water-based cutting fluid, which comprises the following raw materials by weight: 8-20 parts of sodium abietate, 15-25 parts of a rosin amine glucose ester surfactant, 5-10 parts of rosin amine polyoxyethylene ether, 12-18 parts of a polyaniline aqueous anti-corrosion agent, 5-15 parts of triethanolamine oleate, 3-8 parts of triethanolamine, 3-10 parts of diisopropanolamine, 10-15 parts of sodium carbonate, 5-15 parts of hydrophilic alcohol, 3-6 parts of a sterilization agent, 2-5 parts of a foaming agent, 3-10 parts of a stabilizer, and 80-100 parts of water. The environmental-protection lubricating water-based cutting fluid has functions of excellent cleaning, excellent lubrication, excellent corrosion resistance and excellent cooling, and further has characteristics of environmental protection, long service life, good water solubility, low cost, and high stability.

The invention discloses Sr and multi-combination-metamorphism low-zinc hot-dipping-coating aluminum alloy coating materials. According to element weight percentage, alloy constituent is that Zn: 28-30, Sr: 0.01-0.02, Li: 0.1-2.0, solvent deactivator: 0.8-1.0, Bi: 0.025-0.035, grain refiner: 0.1-0.2, rare earth additives: 0.1-0.5, basal body interface reaction buffering agent: 0.1-0.8, and the rest of the alloy constituent is Al and inevitable micro impurity. The Sr and multi-combination-metamorphism low-zinc hot-dipping-coating aluminum alloy coating materials have the advantages of being good in wettability of base steel, strong in combination force, high in strength, good in extensibility, high-temperature-resistant, thin in thickness of a coating layer, strong in corrosion resistance, and good in machinability and weldability and the like.

The invention discloses a moistening agent for coal mine spray and dust reduction and a preparation method thereof. The moistening agent is prepared from 3% to 5% of lignosulfonate, 3% to 5% of vinylacetate, 3% to 5% of 2-acrylamide-2-methyl propanesulfonic acid, 0.05% to 0.1% of an initiator, 0.02% to 0.04% of a crosslinking agent, 0.3% to 0.6% of an antifreezing agent, 0.2% to 0.4% of a corrosion inhibitor and the balance of water, wherein sodium lignosulphonate is utilized as a matrix to perform polymerization reaction with vinyl acetate and 2-acrylamide-2-methyl propanesulfonic acid, so that generated polymer not only keeps degradable performance of sodium lignosulphonate, but also can make fog drops have moistening and bonding functions. When the moistening agent for coal mine sprayand a surface active agent are compounded to be applied into a spray system, wettability of spray to coal dust is further improved, the fog drops can effectively moisten and wrap the dust; thus, the dust suppression efficiency is greatly improved, and dust dispersion is reduced; furthermore, the moistening agent can be naturally decomposed, so that the situation of secondary pollution caused by dust fall is prevented from happening.

The invention discloses a cleaning agent and a cleaning method for a diamond-wire cutting machine. The cleaning agent comprises the following components: an alkali, sodium silicate, organosilicone, AEO-7, AEO-9 and deionized water. According to the cleaning agent and the cleaning method for the diamond-wire cutting machine, the cleaning agent is prepared by adding the effective components (the alkali and surfactants) into the a solvent (deionized water), the cleaning agent is a weakly alkaline solution which cannot corrode equipment, the surfactants have strong wettability and can ensure that the cleaning agent penetrates into the pipe wall to micronize the glass pipe wall, and in addition, the surfactants have good dispersibility and can ensure that the fallen micro-powder is wrapped in the solution without re-precipitating. The cleaning agent disclosed by the invention has good wettability and dispersibility, is low in cost and strong in purposiveness, and the cleaning method disclosed by the invention is simple in process, is easy to operate and can meet the environmental protection requirement.