30results about How to "Uniform film layer" patented technology

The invention discloses a rare-earth modified Ti-Zr chemical passivation solution for surface treatment of aluminium profiles and a using method of the rare-earth modified Ti-Zr chemical passivation solution. The rare-earth modified Ti-Zr chemical passivation solution is characterized in that the passivation solution is a main salt for auxiliary film-formation, which takes rare-earth compounds as a Ti-Zr passivation treatment solution, and a passivation film is light yellow in appearance and has field judgement property on the quality of a formed film. A formula of the rare-earth modified Ti-Zr chemical passivation solution is as follows: each litre of solution contains 0.5g.L<-1>-10g.L<-1> of potassium fluotitanate (hexafluorotitanic acid), 0.5g.L<-1>-10g.L<-1> of potassium fluozirconate (fluozirconic acid), 0.5g.L<-1>-5g.L<-1> of cerium nitrate (ceric sulfate and ammonium ceric nitrate), 2g.L<-1>-10g.L<-1> of potassium nitrate, 0.5g.L<-1>-3g.L<-1> of sodium fluoride (potassium fluoride), 0.5g.L<-1>-1g.L<-1> of sodium dodecyl benzene sulfonate or OP-10, 0.2mL-5mL.L<-1> of nitric acid and 1g.L<-1>-5g.L<-1> of boric acid. The using method of the rare-earth modified Ti-Zr chemical passivation solution comprises the following steps of: (1) clearing dirt, such as dirt attached to an aluminium alloy; (2) pretreating the surface of the aluminium alloy; (3) carrying out passivating treatment on the surface of the aluminium alloy by using the rare-earth modified Ti-Zr chemical passivation solution; and (4) washing the aluminium alloy by using water and drying the aluminium alloy. The rare-earth modified Ti-Zr chemical passivation solution disclosed by the invention has the advantages of light yellow appearance, high film formation speed, simple process, uniformity in film layer, strong corrosion resistance, low environment pollution and the like.

The invention discloses a high silicon aluminum alloy anodic oxidation method and equipment thereof. The method comprises the steps as follows: A, after a high silicon aluminum alloy die casting is subjected to oil removing, abrasive water jet polishing treatment is performed; B, the polished high silicon aluminum alloy die casting is placed in a prepared anodic bath solution, rectangular wave pulse voltage is used for performing an anodic oxidation reaction, and the anodic oxidation reaction is stopped after an anodic oxidation film layer reaches a preset thickness; and C, after the high silicon aluminum alloy die casting with the anodic oxidation film layer is subjected to water washing and dyeing, hole sealing treatment is performed, so that a finished product is obtained. According to the method, pretreatment, anodic oxidation reaction and post treatment technologies of the anodic oxidation reaction of the high silicon aluminum alloy die casting are modified, so that the oxidation layer which is uniform, high in dimensional accuracy, compact and attractive is formed on the surface of the prepared high silicon aluminum alloy die casting; and compared with a conventional technology, the processing technology is more environment-friendly, the processing cost is lower, and large-scale industrial production can be realized more easily.

The invention discloses a preparation method of a glass loaded copper / chromium ion double doped nano titanium dioxide photocatalysis film. The preparation method comprises the following steps: firstly, plating an SiO2 film on a glass substrate by using a sol-gel method; further dipping the glass substrate plated with the SiO2 film into copper / chromium ion double doped titanium dioxide sol; and lifting, drying and roasting so as to prepare the film. Compared with a pure nano titanium dioxide photocatalysis film, the glass loaded copper / chromium ion double doped nano titanium dioxide photocatalysis film has the advantages that the SiO2 film plated on the glass substrate increases the degradation rate of methylene blue dye by two fold.

The invention discloses a treating solution for preparing a corrosion resistant Al-Mo-Mn-Re quaternary composite passivation film on an aluminum alloy surface and its application method. The passivation solution is characterized by being a passivation treatment solution which is used for preparing a passivation film on an aluminum alloy surface by utilizing a molybdate, a rare earth salt and a permanganate oxidant. Per liter of the treating solution consists of: 8g.L<-1>-25g.L<-1> of sodium molybdate (or ammonium molybdate), 5g.L<-1>-10g.L<-1> of potassium permanganate, 0.5g.L<-1>-3g.L<-1> of sodium fluoride (or potassium fluoride), 0.5g.L<-1>-5g.L<-1> of cerium nitrate (or ceric sulfate, lanthanum nitrate), 1g.L<-1>-5g.L<-1> of acetic acid, 0.5g.L<-1>-1g.L<-1> of sodium dodecyl benzene sulfonate (or OP-10) . The application method includes: (1) removing adhered dust and other dirt from the aluminum alloy; (2) then conducting pretreatment on the aluminum alloy surface; (3) using the treating solution for passivation treatment; and (4) carrying out water washing and drying. The treating solution of the invention has the advantages of fast film formation speed, simple process, uniform film, strong corrosion resistance, and less environmental pollution, etc.

The invention discloses a stable and high-efficient room-temperature black phosphating presoak. Each liter of the presoak comprises the following raw materials by weight: 1-10 g of a blackening agent, 0.1-1 g of a blackening assistant, 0.5-5 g of a stabilizer, 1-5 g of an accelerant and the balance of water. The presoak can be applied on the surface of steel, so that blackness is high; a film layer binding force is firm; and the appearance is uniform. Besides, a conversion film is of a compact crystalline structure, so that the corrosion resistance of the phosphating conversion film can be greatly improved by the presoak; and besides, the presoak is extremely stable and high in treatment capacity, does not contain nickel, nitrites and other toxic or harmful substance and thus is low-pollution to the environment.

The invention discloses a high silicon aluminum alloy anodic oxidation method and equipment thereof. The method comprises the steps as follows: A, after a high silicon aluminum alloy die casting is subjected to oil removing, abrasive water jet polishing treatment is performed; B, the polished high silicon aluminum alloy die casting is placed in a prepared anodic bath solution, rectangular wave pulse voltage is used for performing an anodic oxidation reaction, and the anodic oxidation reaction is stopped after an anodic oxidation film layer reaches a preset thickness; and C, after the high silicon aluminum alloy die casting with the anodic oxidation film layer is subjected to water washing and dyeing, hole sealing treatment is performed, so that a finished product is obtained. According to the method, pretreatment, anodic oxidation reaction and post treatment technologies of the anodic oxidation reaction of the high silicon aluminum alloy die casting are modified, so that the oxidation layer which is uniform, high in dimensional accuracy, compact and attractive is formed on the surface of the prepared high silicon aluminum alloy die casting; and compared with a conventional technology, the processing technology is more environment-friendly, the processing cost is lower, and large-scale industrial production can be realized more easily.

The invention relates to a method of preparing vanadium pentoxide nano-films at a low temperature. The method is characterized by comprising the following steps of carrying out substrate cleaning, sol preparing, film forming, film aftertreatment and the like. The invention also relates to the vanadium pentoxide nano-films prepared by the method and application of the vanadium pentoxide nano-films in thermal-induced phase transition devices, electrochromic devices, or gas-sensitive devices and the like. The method provided by the invention has the advantages of being simple in film forming, low in cost, capable of being applied to large-area preparation, and the like; according to the method, heat treatment is carried out in a closed environment, so that the temperature for preparation is remarkably lowered, and the energy consumption and cost required for preparation are greatly reduced, and environmental pollution is reduced; the prepared vanadium pentoxide films are nano-films, thereby having relatively good crystallinity.

The invention relates to a high-adhesion selenium-free normal temperature blackening liquid, and belongs to the technical field of steel treatment. First of all, an effective component which has a specific chelation effect on iron ions is extracted from a Chinese medicine, and used for chelating and shielding ferrous ions replaced from the surface of steel so as to avoid the ferrous ions to hinder copper plating on the surface of the steel; and then a soy saponine extracting solution is utilized to wash the surface of the steel so as to improve the wettability of the surface of the steel, in this way, liquid is easy to wet and be spread on the surface of the steel, so that forming of even blackening films is facilitated; and finally Arabidopsis thaliana and an egg yolk fermentation material are utilized to supply the elements of nitrogen, sulfur and phosphorus, a layer of chemical protection film is formed through reoxidation on a copper oxide layer of the surface of the steel and used for filling holes between the blackening films, so that the glossiness of the blackening films is enhanced; and meanwhile, combination between the blackening films and a steel substrate can further be firmer, and the adhesion performance of the blackening films is improved. The prepared blackening liquid has the characteristics of being even in film layer, the blackening films are good in glossiness, adhesion and corrosion resistance, the component is nontoxic and environmentally friendly, and the application prospects are wide.

The invention discloses an ultrasonic phosphorizing device for goods shelf production. The ultrasonic phosphorizing device comprises an outer jacket and a phosphorizing tank, supporting feet are arranged at the bottom of the phosphorizing tank, the outer jacket is nested outside the phosphorizing tank, an electric heating resistance wire is paved on the outer surface of the phosphorizing tank andarranged between the phosphorizing tank and the outer jacket, and an ultrasonic transducer and a temperature sensor are mounted on the side wall of the phosphorizing tank in an embedded manner and arranged in an up-down staggered manner. Ultrasonic phosphorizing technology is adopted, so that easiness in adjustment and control is realized; a phosphorized film obtained by the method is uniform, thin, compact and high in phosphorizing speed and corrosion resistance, and subsequent processing quality of workpieces is improved; heat conducting liquid is utilized to uniformly heat the phosphorizingtank, so that the problem that the phosphorizing tank is too high in temperature locally caused by the electric heating resistance wire is avoided; a nozzle enables tank liquid to be quickly stirredwell, so that heating efficiency is improved; an automatic deslagging device is arranged, so that labor intensity of workers is lowered.

A technology for electrically depositing a ceramic layer on the surface of Mg alloy with the microarc between cathode and anode is disclosed. The pretreated Mg-alloy workpiece is connected respectively to the positive and negative electrodes of a high-power full-wave pulse power supply and then put in the alkaline electrolyte prepared from deionized water and sodium silicate. The cathode and anode of the electrolyzer are Mg-alloy workpiece. The symmetrical AC pulse voltage is used for the microarc depositing on the surface of Mg-alloy workpiece. The output voltage of power supply is continuously raised up with the progress of microarc oxidizing. Its advantages are less heat and energy consumption, low cost, and high effect and productivity.

The invention discloses highly corrosion-resistant environment-friendly black phosphatizing liquid without nickel single component. Each liter of the treatment liquid consists of the following raw materials: 25-50g of main film forming agent, 5-25g of film forming aid, 0.1-3g of accelerant, 60-80g of grain refiner, 0.5-2g of stabilizer, 0.05-1g of blackening agent and 0.1-0.5g of blackening aid. The phosphatizing liquid disclosed by the invention can form a black phosphatized film on a steel surface by a one-step process. The phosphatized film has high blackness and high corrosion resistance, is uniform and avoids stripping; a copper sulfate spot test can reach 40min which is much longer than the national standard (2min); the phosphatizing liquid does not contain toxic and harmful substances such as nickel, nitrite and the like and causes little environmental pollution.

The invention discloses a Ti-Mg-B surface conditioner with stable performance and long service life for zinc-phosphating and a preparation method thereof. The surface conditioner comprises the following raw materials by weight percent: 1-10% of titanium sulfate or titanyl sulfate, 10-50% of disodium hydrogen phosphate, 5-15% of sodium pyrophosphate, 5-15% of sodium bicarbonate, 1-10% of magnesiumsulfate, 1-10% of borax, 1-8% of trisodium phosphate and 0.1-1.5% of polycarboxylic acid anionic organic compound. The preparation method comprises the following steps: using a defined amount of disodium hydrogen phosphate to prepare an aqueous solution with the concentration of 50%, adding half of a defined amount of sodium pyrophosphate, and defined amounts of titanium sulfate or titanyl sulfate, sodium bicarbonate, borax, trisodium phosphate and polycarboxylic acid anionic organic compound in the aqueous solution of disodium hydrogen phosphate, heating to 70-80 DEG C, fully stirring to obtain white powder with the water content of less than 5%, continuously stirring the powder at 80-100 DEG C while adding the residual sodium pyrophosphate and a defined amount of magnesium sulfate, and continuously stirring and drying to obtain powder with the water content of less than 2%.

The invention belongs to the technical field of coating, in particular to waterborne flame-retardant coating. The coating comprises a component A and a component B. With the total mass of the component A being 100%, the component A comprises 40%-60% of polycarbonate dispersion, 5%-10% of modified acrylic emulsion, 1%-2% of a wetting dispersant, 1%-2% of a defoamer, 0.5%-1% of a thickener, 5%-15% of an inorganic filler, 10%-20% of a dispersant, 0.5%-1% of bentonite, 2%-5% of a coalescing agent, and 0.5%-1% of a leveling agent, with the balance being water. The component B comprises hexamethylene diisocyanate. Through the combined action of the component A and the component B, a coating film formed by the waterborne flame-retardant coating has excellent flame-retardant and heat-insulating properties, has good adhesion on a base material, and can well delay material combustion; and meanwhile, when the flame-retardant coating is coated in a conventional wood product, furniture can obtain good flame retardance, and the product universality is relatively wide.

The invention discloses a rare-earth modified Ti-Zr chemical passivation solution for surface treatment of aluminium profiles and a using method of the rare-earth modified Ti-Zr chemical passivation solution. The rare-earth modified Ti-Zr chemical passivation solution is characterized in that the passivation solution is a main salt for auxiliary film-formation, which takes rare-earth compounds as a Ti-Zr passivation treatment solution, and a passivation film is light yellow in appearance and has field judgement property on the quality of a formed film. A formula of the rare-earth modified Ti-Zr chemical passivation solution is as follows: each litre of solution contains 0.5g.L<-1>-10g.L<-1> of potassium fluotitanate (hexafluorotitanic acid), 0.5g.L<-1>-10g.L<-1> of potassium fluozirconate (fluozirconic acid), 0.5g.L<-1>-5g.L<-1> of cerium nitrate (ceric sulfate and ammonium ceric nitrate), 2g.L<-1>-10g.L<-1> of potassium nitrate, 0.5g.L<-1>-3g.L<-1> of sodium fluoride (potassium fluoride), 0.5g.L<-1>-1g.L<-1> of sodium dodecyl benzene sulfonate or OP-10, 0.2mL-5mL.L<-1> of nitric acid and 1g.L<-1>-5g.L<-1> of boric acid. The using method of the rare-earth modified Ti-Zr chemical passivation solution comprises the following steps of: (1) clearing dirt, such as dirt attached to an aluminium alloy; (2) pretreating the surface of the aluminium alloy; (3) carrying out passivating treatment on the surface of the aluminium alloy by using the rare-earth modified Ti-Zr chemical passivation solution; and (4) washing the aluminium alloy by using water and drying the aluminium alloy. The rare-earth modified Ti-Zr chemical passivation solution disclosed by the invention has the advantages of light yellow appearance, high film formation speed, simple process, uniformity in film layer, strong corrosion resistance, low environment pollution and the like.

The invention discloses a fluorine-containing polymer-based dielectric composite film. The dielectric composite film is prepared from conductive metal powder, calcium copper titanate, rubber particles and fluorine-containing polymer as raw materials in the presence of a compound liquid of N, N-dimethyl acetamide and polyacrylic acid as a solvent, wherein the mass ratio of components is (0-2.5): (10-30): (0-3): 10. The invention also discloses a preparation method of the composite film. The fluorine-containing polymer-based dielectric composite film is a dielectric composite film which has the advantages of high dielectric constant, high compressive strength, low dielectric loss and excellent elongation and controllable thickness.

The invention relates to a high-adhesion selenium-free normal temperature blackening liquid, and belongs to the technical field of steel treatment. First of all, an effective component which has a specific chelation effect on iron ions is extracted from a Chinese medicine, and used for chelating and shielding ferrous ions replaced from the surface of steel so as to avoid the ferrous ions to hinder copper plating on the surface of the steel; and then a soy saponine extracting solution is utilized to wash the surface of the steel so as to improve the wettability of the surface of the steel, in this way, liquid is easy to wet and be spread on the surface of the steel, so that forming of even blackening films is facilitated; and finally Arabidopsis thaliana and an egg yolk fermentation material are utilized to supply the elements of nitrogen, sulfur and phosphorus, a layer of chemical protection film is formed through reoxidation on a copper oxide layer of the surface of the steel and used for filling holes between the blackening films, so that the glossiness of the blackening films is enhanced; and meanwhile, combination between the blackening films and a steel substrate can further be firmer, and the adhesion performance of the blackening films is improved. The prepared blackening liquid has the characteristics of being even in film layer, the blackening films are good in glossiness, adhesion and corrosion resistance, the component is nontoxic and environmentally friendly, and the application prospects are wide.