12results about How to "Increase surface tension" patented technology

The present application relates to a kind of preparation methods of coating material, in particular to a kind of preparation methods of neodymium iron boron nano coating material.It includes the following steps: substrate pretreatment;Coating preparation: spray preparation nano coating, the binder of nano coating belongs to silicon-titanium modified polymer system, coating thickness is controlled at 20-25 μm, curing process: 50-70 ℃ surface dry 5-20 min, 160-200 ℃ baking and curing 40-60 min;Coating plasma treatment: plasma treatment 2-4 times.The present application nano gray coating can significantly improve surface tension after plasma treatment, the durability of coating surface tension treated under the condition that air is gas source is obviously superior to nitrogen, surface tension is still above 50 mN / m after room temperature is placed and naturally aged 6 months;After coating surface plasma treatment, drawing strength is also improved simultaneously.

The utility model provides a kind of corona gap adjusting device, comprising: rack, be set to the rack and with the rack form rotating connection's corona roller, fixed in the rack and located the corona roller directly above bracket, fixed in the bracket close to the corona roller one side telescopic mechanism, fixed in the telescopic mechanism close to the corona roller one side ceramic electrode and fixed to the gap measuring device of rack;The ceramic electrode with the corona roller directly opposite and mutually spaced arrangement, the telescopic mechanism is used to adjust the spacing of the ceramic electrode to the corona roller, the gap measuring device is spaced with the corona roller, for measuring the gap size between the ceramic electrode and the corona roller.The utility model's corona gap adjusting device can improve corona effect, increase aluminum foil surface roughness, oil removal effect and surface tension, and gap measurement accuracy.

The invention discloses a quaternary ammonium salt type pyrrolidine polyoxyethylene ether composition and a preparation method thereof, and relates to the technical field of polyoxyethylene ether materials. The quaternary ammonium salt type pyrrolidine polyoxyethylene ether composition is prepared from the following raw materials in parts by weight: 20 to 30 parts of quaternary ammonium salt type pyrrolidine polyoxyethylene ether, 0.5 to 1 part of antioxidant and 25 to 35 parts of deionized water. According to the invention, cyanuric chloride and amino decaglycol monomethyl ether react to generate a monosubstituted compound, and the monosubstituted compound and 3, 5-di-tert-butyl-4-hydroxybenzylamine react to generate the antioxidant. The quaternary ammonium salt type pyrrolidine polyoxyethylene ether composition prepared by the invention has good surface tension and oxidation resistance.

This invention provides a method for preparing iron-based amorphous powder, the iron-based amorphous powder, and its applications. The preparation method includes: weighing iron, silicon, ferroboron master alloy, carbon, erbium, and chromium in a predetermined proportion and adding them to a melting furnace to obtain a molten liquid; holding the molten liquid at a constant temperature and allowing it to stand to obtain an amorphous powder liquid; and subjecting the amorphous powder liquid to water-air combined atomization to obtain spherical amorphous powder. This invention solves the problem in the prior art where the amorphous powder has an irregular shape and sharp edges, which easily leads to the accumulation of losses and affects the performance and stability of the magnetic core.

The application discloses a deep-groove polysilicon etching solution, which comprises an oxidizing agent, an inorganic acid, a pH regulator and a surfactant. The deep-groove polysilicon etching solution can efficiently etch polysilicon while ensuring the uniformity and smoothness of the etching surface, and can maximize the consistency of the etching of the upper and lower grooves and the smoothness of the surface. In the etching process, the inorganic acid ensures that the etching solution system is in an acidic environment, and the polysilicon is etched; the pH regulator avoids the large fluctuation of the pH of the etching solution, thereby ensuring the stability of the polysilicon etching process; and the surfactant reduces the surface tension of the etching solution, improves the wettability of the etching solution, ensures the consistency of the etching rate of the upper and lower grooves, and ensures the consistency of the groove aperture.

The invention relates to the field of preparation of high polymer materials, in particular to a flexible irradiation crosslinking polyethylene foam material with high tensile strength and a preparation method thereof. According to the method, an elastic grafted polyion brush functional component is compounded with low-density polyethylene, so that the flexibility and tensile strength of the polyethylene foam can be effectively improved, and the polyethylene foam material with flexibility, high tensile strength and no corona gluing is obtained. The method disclosed by the invention has the following advantages: (1) the product is good in flexibility and high in tensile strength, and when the apparent density is lower than 0.1 g / cm < 3 > and the thickness is 1mm, the elastic modulus is below 0.8 MPa, the tensile strength is more than 1.6 MPa, and the elongation is more than 250%; (2) the cohesiveness of the product is high, the surface tension can reach 39 mN / m or above, the requirement of a gluing process is met, and the surface tension can be maintained for 6 months or above; and (3) the obtained product has wide application in the fields of precision mechanical shock absorption, electronic equipment, electronic screen protection and the like.

This invention discloses a method for controlling inclusions in titanium-containing ultra-low carbon steel. The steelmaking process is as follows: converter process – LF process – RH process – slab continuous casting process. After aluminum deoxidation and alloying in the RH process, low-reactive slag is added. As the vacuum molten steel circulates, this slag floats to the surface and remains at the steel-slag interface, hindering oxygen transfer from the ladle slag to the molten steel. Simultaneously, this substance has the ability to adsorb inclusions in the steel. By controlling the process parameters of the RH process, oxygen transfer from the ladle slag to the molten steel is effectively prevented, avoiding secondary oxidation of titanium and aluminum elements in the deoxidized steel and controlling the inclusion content in the steel. This invention's control method effectively prevents oxygen transfer from the ladle slag to the molten steel and avoids secondary oxidation of easily oxidized elements such as titanium and aluminum in the deoxidized steel, resulting in significant economic and social benefits.

This invention discloses a method for preparing a high-wetting-strength, high-adhesion lithium-ion battery separator. The high-wetting-strength, high-adhesion coating slurry comprises: polyethylene wax powder, alumina, adhesive, dispersant, and isopropanol. This invention modifies the separator surface with a mixture of polyethylene wax powder and alumina, giving the separator good heat resistance. The polyethylene wax powder solution coats the alumina surface and penetrates into the pores between the alumina particles, weakening the cohesive force and making the alumina easier to open under applied shear force. This makes the combined coating powder easier to wet with electrolyte, increasing the separator's liquid absorption and cycle rate. Simultaneously, the high-wetting-strength, high-adhesion coating slurry made from polyethylene wax powder provides more uniform coating, reduces slurry viscosity, improves surface tension, and enhances material adsorption, increasing the adhesion between the separator and the electrode.

The invention provides a technology capable of effectively reducing the disintegration rate of a pattern of a substrate. The substrate processing method includes a holding step, a liquid supply step, a first drying liquid supply step, a second drying liquid supply step, and a drying step. In the first drying liquid supply step, a first drying liquid having a first boiling point (bp1) and a lower surface tension than the processing liquid is supplied to the first main surface of the substrate. In the second drying liquid supply step, a second drying liquid having a second boiling point (bp2) and a lower surface tension than the first drying liquid is supplied to the first main surface of the substrate. In the drying step, the substrate is dried. And a heating step for heating the second main surface of the substrate to a first temperature during at least a part of the time in the first drying liquid supply step, and heating at least a part of the second main surface of the substrate to a second temperature during at least a part of the time in the second drying liquid supply step. The positive or negative of the value obtained by subtracting the second temperature from the first temperature is the same as the positive or negative of the value obtained by subtracting the second boiling point (bp2) from the first boiling point (bp1).

The invention relates to the technical field of film materials, in particular to a double-sided corona heat-sealing anti-fog film and a preparation method thereof.The double-sided corona heat-sealing anti-fog film comprises a laminated structure formed by co-extrusion of three layers, and the laminated structure sequentially comprises a first surface layer, a second surface layer and a third surface layer, the middle bonding layer is composed of a blend of polypropylene and maleic anhydride grafted polypropylene; and the second surface layer is a heat-sealing anti-fog functional layer and is composed of a blend of a bio-based reaction compound and an ethylene-vinyl acetate copolymer. Through reasonable design and optimization of the factors, the double-sided corona heat-sealing anti-fog film with good anti-fog performance and relatively high heat-sealing strength can be prepared.

The utility model relates to water environment treatment technical field, concretely is a kind of nanometer aeration equipment based on pure oxygen, it includes: bottom shell, the front and rear both ends in bottom shell inside are provided with floating shell body, the bottom of bottom shell is equipped with multiple equidistance distribution filter hole;Shell cover is set to the top of bottom shell, the right end of shell cover top is equipped with overhauling groove.The utility model passes through the action of turbine pump body, air cock and ceramic microporous block, so that the equipment has the advantages of oxygen content increasing speed and water environment treatment efficiency, solve the oxygenation equipment of existing generally increasing the contact area of water and air, make the oxygen in air more dissolved in water, to meet the demand of aquatic organism to oxygen, however, the contact area of water and air is lower, and the oxygen content in air is not high, resulting in the oxygen content in water body increases slowly, also make water environment treatment efficiency problem of being not good.

This invention discloses a copper slag modification and granulation system with real-time adjustable atmosphere and composition, comprising: a smelting furnace with an adjustable fume hood on top; an insulated chute for conveying the modified slag to the granulation section; a granulation device for dry centrifugal granulation of the modified slag; the adjustable fume hood having: an oxidizing gas interface for introducing oxidizing gas into the furnace; a reducing gas interface for introducing reducing gas into the furnace; a backup gas interface for introducing either oxidizing or reducing gas; an openable / closable observation / feeding port for observing the furnace state and / or adding modified materials to the furnace; and a flue gas outlet for discharging the flue gas generated in the furnace. This system integrates multiple gas interfaces and a feeding port on the adjustable fume hood of the smelting furnace, enabling active control of the slag's oxidation-reduction state and chemical composition during the slag holding stage, thereby optimizing the slag's properties and creating conditions for subsequent granulation processes.