52results about How to "Play the role of defoaming" patented technology

The invention relates to a degreasing agent used for workpieces, a preparation method and a workpiece surface spraying pretreatment method. The degreasing agent includes 3-5% by mass of a component A,3-5% by mass of a component B and the balance of tap water or deionized water, wherein the component A includes deionized water, an inorganic base, a complexing agent and a compounded low-foam solubilizing surfactant, and a mass ratio of the deionized water to the inorganic base to the complexing agent to the compounded low-foam solubilizing surfactant is (65-70):(15-25):(1-2):(8-14); and the component B includes deionized water, a complexing dispersant, a corrosion inhibitor, a low-foam solubilizer, an end-capped/modified isomeric alcohol ether surfactant and a modified polyether, and a massratio of the deionized water to the complexing dispersant to the corrosion inhibitor to the low-foam solubilizer to the end-capped/modified isomeric alcohol ether surfactant to the modified polyetheris (50-70):(1-2):(0-5):(5-10):(8-15):(8-25). The degreasing agent provided by the invention can be used at room temperature during spraying, has an excellent degreasing effect, and does not generatea large amount of foam; and the method for preparing the degreasing agent and the workpiece surface spraying pretreatment method which uses the degreasing agent have simple operation, and are suitablefor mass production.

The invention provides a production process of magnesian slag pressing agents. Magnesium-carbide refractory is cooled to 25-30 DEG C, crushed into 5-50mm particles by using a PC0606 jaw crusher, then placed in a 4R3216 Ramon mill, and machined into powder smaller than 3mm for standby application; limestone powder with the CaCO3 content being 98% is selected for standby application; the magnesium-carbide refractory powder and the limestone powder of which the mass percent is 65:35 are mixed, placed in a VI forced stirring mixer to be mixed evenly, then placed in a steel slag powder ball press machine or a refractory ball press machine to be made into 30+/-5mm balls, and the balls are dried at the temperature of 30-50 DEG C and then can be used. The magnesian slag pressing agents are added 30-60s before a converter is toppled down at the smelting end point, and 25-35kg of the magnesian slag pressing agents are added to one ton of slag.

The invention relates to a leaching tank stirring device having a defoaming function. The stirring device comprises a long stirring shaft, a first motor, a bracket and stirring vanes, wherein the first motor and the bracket are arranged at one end of the stirring shaft; the bracket is used for fixing the whole stirring device; the stirring vanes taking the stirring shaft as a rotary shaft are arranged on the other end of the stirring shaft; and a cylindrical supporting shaft fixed on the bracket is sleeved outside the stirring shaft, and the supporting shaft is provided with a flaky defoaming mesh perpendicular to the axis of the supporting shaft. According to the leaching tank, the defoaming mesh is integrated on the stirring shaft of the conventional stirring device, so the foam floating on the surface of mixed liquid can be removed when the stirring vanes rotate or stop rotating. The defoaming mesh has a rotary structure independent of the stirring shaft, and the axial height is adjustable, so the transverse cutting force for foam is increased, the degree of adaptability to the tanks with different heights and the mixed liquid with different liquid levels is improved, and the defoaming effect is strengthened.

The invention discloses a paper coating water-based emulsion and a preparation method and applications thereof. Aiming at the problem that the barrier property of the current paper coating emulsion is not good, the invention provides the paper coating water-based emulsion. The method comprises the following steps: using a certain amount of vinylidene chloride, acrylonitrile, methacrylate and methacrylic acid as a mixed monomer, selecting a special seed emulsifier and a mixed emulsifier, adopting seed emulsion polymerization, and finally obtaining the paper coating water-based emulsion. The paper coating water-based emulsion has good stability, environmental protection and good barrier property. A vacuum desorption post-processing method is adopted in the later period of emulsion polymerization, so that the monomer residual quantity of the obtained water-based emulsion is low. The prepared coated paper has no foreign smell, cannot pollute food or drugs, and is more beneficial to applications to the package field of food, drugs and the like.

The present invention discloses a good water resistance aqueous polyurethane adhesive, wherein the raw materials comprise, by weight, 50-60 parts of a modified polyurethane emulsion, 0.06-1.8 parts of polyvinyl alcohol, 0.01-0.08 part of BYK333, 0.01-0.018 part of an aqueous defoamer, 5.9-12.9 parts of kaolin powder, 0.03-0.57 part of titanium dioxide powder, 0.2-3.9 parts of an aqueous curing agent, 0.1-0.3 part of an antioxidant 1010, 0.5-1 part of sodium dodecyl benzene sulfonate, 0.1-0.2 part of an ultraviolet absorber 531, 0.6-1 part of a wetting agent Wet265, 0.3-0.7 part of 3-aminopropyl triethoxysilane, and 0.2-0.4 part of a polysiloxane macromolecule compound. The good water resistance aqueous polyurethane adhesive of the present invention has characteristics of good water resistance, high mechanical strength, and good adhesion.

The invention belongs to the technical field of lithium batteries, and particularly relates to a lithium battery production process, which comprises: slurry preparation: grinding a lithium iron phosphate positive electrode material by using a ball mill, adding a solvent and a thickener to a mixing tank, and carrying out low-speed stirring at a speed of 600-800 r/min to obtain a slurry, while stirring, adding the ground electrode positive electrode material into the stirring tank in batches; and stirring the components for 50-60 minutes after the addition is finished, uniformly stirring the solvent and the thickening agent, and adding the powder of the positive electrode material in batches. According to the coating device, bubbles in the mixed slurry can be eliminated, so that the coatingis more uniform and compact, the coating thickness can be adjusted, and the coating device can be used for manufacturing pole pieces with different discharge intensities; meanwhile, the step of extruding the current collection carrier coated with the mixed slurry by using the lower pressing roller and the upper pressing roller is added in the coating device, so that the mixed slurry is more compact, the discharge time of the lithium battery can be further increased and the service life of the lithium battery is prolonged.

The invention discloses a cover type defoamer with a defoaming function. The cover type defoamer comprises a seal cover piece provided with a gas releasing opening and a plurality of compressed gas defoaming spray guns arranged on the seal cover piece, wherein nozzles of the compressed gas defoaming spray guns point to a reaction vessel matched with the seal cover piece. By using the cover type defoamer, an acidolysis process for preparing titanium white powder by an improved sulfuric acid method comprises the following steps of: a, uniformly mixing a titanium raw material and concentrated sulfuric acid in an acidolysis pot and adding starting water to initiate a main reaction; b, starting the compressed gas defoaming spray guns in the cover type defoamer; and c, shutting off the compressed gas defoaming spray guns after the main reaction is finished. In the cover type defoamer, foams in the reaction vessel are broken by the impact effect of compressed gas, and the foams are broken forcibly to release a large quantity of gases, so that the defoamer can be used for restraining the increase of foam volume, has a defoaming effect and is suitable for a plurality of types of acidolysisprocesses.

The invention discloses a polyvinyl dichloride (PVDC) emulsion for cellophane coating and a preparation method and application of the PVDC emulsion for the cellophane coating. The PVDC emulsion for the cellophane coating aims at solving the problems that existing cellophane is poor in barrier property, incapable of being used for food packaging and the like. The PVDC emulsion for the cellophane coating is obtained by serving a certain amount of vinylidene chloride, acrylonitrile, methacrylate and itaconic acid as a mixed mononer, selecting specific seeded emulsifier and mixed emulsifier, and adopting seeded emulsion polymerization. The PVDC emulsion for the cellophane coating is low in cost and good in barrier property. The coated cellophane is good in oxygen-resisting and waterproof effects and capable of being used for the food packaging.

The invention discloses clothing treatment equipment. The clothing treatment equipment comprises a rotating barrel, a drainage hole and a plugging mechanism, wherein the rotating barrel can rotate inthe axial direction of the equipment, the drainage hole is formed in the lowest position of the bottom of the rotating barrel and the plugging mechanism is arranged at the lowest position to open or close the drainage hole, and the plugging mechanism covers the drainage hole and can rotate along with the rotating barrel when in a closed state. According to the clothing treatment equipment, a structure equivalent to an outer barrel is omitted, all washing water is contained in the rotating barrel, and the consumption of washing water is reduced. In addition, the problem of how to discharge water from the rotating barrel in the washing/dewatering process is effectively solved.

The invention discloses a preparation method of a super-concentrated carboxyl-based ester-based polymer. The super-concentrated carboxyl-based ester-based polymer is prepared from the raw materials inparts by mass: 1.2-2.7 parts of hydrophilic small monomer for emulsification, 3.3-5.6 parts of hydrophobic small monomer for emulsification, 16-37 parts of carboxyl small monomer, 0.05-0.21 parts ofemulsion initiator, 2.1-5.2 parts of initiator a, 3.2-6.5 parts of initiator b, 370-440 parts of small ester-based monomers, 3.7-8.6 parts of a cross-linking agent, 3.5-7.7 parts of flexible small monomers, 19-44 parts of polyether, 0.2-0.8 part of oxidized graphene, 0.10-0.29 part of a chain transfer agent, 5-10 parts of a neutralizing agent, 5-10 parts of a pH regulator, 2.0-5.0 parts of co-emulsifier, 0.4-1.0 part of liquid film enhancer and the balance of water, the total raw materials is 1,000 parts, and the solid content is 50%. The hydrophobic monomers are adopted to prepare the polymeremulsion with excellent water resisting property. The emulsifier is self-made super-concentrated emulsifier, the generation of bubbles during the reaction is reduced, and the initiators with different initiation efficiency are adopted to stabilize the reaction rate. The polyether is added in the preparation method, and the polymer emulsion is enabled to have better connection property, and further has a good repairing effect as a waterproof coating.

The invention relates to the technical field of metal processing processes, and discloses a wire drawing process of an automobile mark. The wire drawing process comprises the following steps of S1, the wire drawing procedure and S2 the PVD surface treatment procedure. S2 further comprises the following steps of PVD pretreatment, wherein the automobile mark is cleaned through a cleaning agent, andtime ranges from 15 min to 25 min; secondly, baking, wherein the automobile mark is baked for 10-15 min at the vacuum furnace temperature ranging from 80 DEG C to 90 DEG C; thirdly, hanging up; fourthly, coating; and fifthly, hanging down. The cleaning agent in the first step comprises, by weight, 70-80 parts of polyethylene glycol octylphenol ether and a modifier. The modifier comprises 10-15 parts of methyl triethoxysilane. The wire drawing process has the following advantages and effects that oil dirt can be separated from the metal surface by means of polyethylene glycol octylphenol ether;and methyl triethoxysilane is grafted to polyethylene glycol octylphenol ether, the molecular weight of hydrophilic groups is increased, modified polyethylene glycol octylphenol ether can enter a liquid film more easily, and bubbles can be diffused more easily so as to be permeated and broken.

The invention discloses an oil-immersed distribution transformer convenient for oil injection, and belongs to the field of oil-immersed transformers. According to the scheme of the oil-immersed distribution transformer convenient for oil injection, in the oil injection process, transformer oil enters a transition chamber through an exchange hole and an elastic fiber cluster, the communicated compartments formed by a straight part and a three-dimensional spiral part in the elastic fiber cluster can effectively buffer the transformer oil, the situation that the flowing speed of the transformer oil is too high is avoided, bubbles are not prone to being formed, meanwhile, the bubbles existing in the transformer can be cut and broken through the straight part, the three-dimensional spiral part and a prefabricated groove, and the bubble removing effect is achieved. In the process of replacing the transformer oil of the oil-immersed transformer, bubbles are not prone to being generated, normal work of the oil-immersed transformer is not prone to being affected, damage caused by overheating of the oil-immersed transformer is not prone to being caused, breakdown of the transformer oil is not prone to being caused, and normal use of the oil-immersed transformer is not prone to being affected.

The invention belongs to the technical field of tempered glass production, and particularly relates to tempered glass and a manufacturing method of the tempered glass. The tempered glass is prepared from the following raw materials in parts by weight: 25-40 parts of silicon dioxide, 10-16 parts of limestone, 10-14 parts of kaolin, 14-23 parts of mirabilite, 5-10 parts of sodium carbonate, 5-11 parts of recycled cullet, 4-7 parts of aluminum powder, 0.5-1 part of antimony trioxide and 0.2-0.3 part of ammonium nitrate. According to the invention, the clarifying device is arranged and can play a role in defoaming the interior of molten glass, so that bubbles in a glass finished product can be reduced, the breaking strength of the glass can be greatly improved, and meanwhile, the visibility of the glass is higher and the glass is more attractive; and during actual work, molten glass sprayed on the upper surface of a convex ring can flow downwards and be paved along the upper surface of the convex ring, and a vibration exciter positioned in the annular cavity can enable the surface of the convex ring to vibrate at the moment, so that tiny bubbles in the molten glass paved on the surface of the convex ring are removed through vibration, and the defoaming effect is further improved.

The invention discloses a defoaming device for outer wall surface water-based paint production, the defoaming device comprises a dispersing tank and a base, the dispersing tank is fixedly mounted on the top surface of the base, a thinning tank is mounted on one side of the dispersing tank, and a coupling is fixedly mounted at the center of the top surface of the dispersing tank. The defoaming device has the beneficial effects that the thinning tank, the rotating pipe, the upper branch pipe and the lower branch pipe are adopted, a defoaming agent enters the rotating pipe from the conveying pipe and flows into the upper branch pipe and the lower branch pipe, the defoaming agent flowing into the upper branch pipe is sprayed above mixed liquid through the spray head, so that foam on the top surface of the mixed liquid is eliminated, meanwhile, the defoaming agent flowing into the lower branch pipe flows out of the leakage hole, and the defoaming effect is good. The defoaming agent is dispersed into the mixed liquid, so that foams in the mixed liquid can be conveniently eliminated during stirring and dispersing, the defoaming agent is uniformly sprayed and put from the inside and the outside of the mixed liquid, the defoaming agent is more uniformly contacted with the mixed liquid, the reaction is quicker, the effect of uniformly putting the defoaming agent for quickly defoaming is achieved, and the defoaming efficiency is further remarkably improved.