50results about How to "Has a passivation effect" patented technology

The invention relates to a composition for protecting metal surfaces, in particular to a preparation method of an environmentally friendly anticorrosive fingerprint resistant paint for metal surfaces. The composition contains an A component and a B component, the A component takes waterborne epoxy resin as a matrix resin and nano-silica, a silane coupling agent, microcrystalline wax disperse liquid, zirconium complex, deionized water, defoamer and a levelling agent are added, thus obtaining the A component; the B component contains a waterborne epoxy modified amine curing agent and a certain quantity of epoxy curing promoter. The two components are mixed and stirred evenly at a ratio of 4:1 to 3:1 to form the environmentally friendly anticorrosive fingerprint resistant paint for metal surfaces. After coating, metal can be heated by going through a baking channel at a certain temperature, the film forming time can be controlled by adjusting the heating period and finally a transparent coating layer which has quite good anticorrosive protection function over metal and fingerprint resistant function is formed.

The invention discloses a soil heavy metal restoration agent and a preparation method thereof. Modified biomass charcoal impregnated by calcium-rich element and iron and manganese oxides is adopted as the carrier, and a nanoscale magnetic material is employed to coat the carrier. The product has a particle size of 0.25-5mm, and has a Fe content of 2-5%, a Mn content of 5-10%, and a Ca content of 10-15%. The restoration agent has certain restoration effect on single and compound pollution of cadmium, chromium, arsenic, lead and mercury under different pH backgrounds, thus having certain contribution effect on contaminated soil restoration and food safety. The restoration agent prepared by the method provided by the invention can fully and effectively utilize restoration materials with special passivation effect on heavy metals, and achieves the purpose of spectral restoration of heavy metal contaminated soil.

The invention discloses a multilayer anti-reflection film for a solar cell and a preparation method thereof. The method comprises the following steps of: generating a layer of SiO2 film with the thickness between 5 and 40nm on a window layer of the solar cell; depositing the anti-reflection film with the thickness of between 50 and 100nm on the SiO2 film; and coating ethylene-vinyl acetate (EVA) and a glass envelope on the anti-reflection film. The anti-reflection film is a pervious film of which the refractive index is between 2.3 and 2.4. A TiO2-based anti-reflection film has passivation effect, has anti-reflection effect after packing components and can replace the conventional SiNx single-layer anti-reflection film commonly used in the industry, and the antireflection effect and the passivation effect can be comparable with those of SiNx. A multilayer film structure has a simple preparation process and low cost and is a relatively ideal structure.

The invention discloses a tinned steel plate surface treatment solution and a preparation method thereof. The surface treatment solution contains 2-25 g/L disodium hydrogen phosphate, 2-13 g/L sodium pyrophosphate, 1-15 g/L ammonium hydrofluotitanate, 1-10 g/L potassium fluosilicate, 2-14 g/L nickel nitrate, 1-12 g/L zirconium titanate, 1-10 g/L sodium metaaluminate, 5-12 g/L manganese dihydrogen phosphate, 2-5 g/L sodium phytate and 1-7 g/L oxalic acid. The preparation method comprises the following steps: a. adding the disodium hydrogen phosphate and sodium pyrophosphate into deionized water, and stirring; b. adding the ammonium hydrofluotitanate, potassium fluosilicate, nickel nitrate, zirconium titanate, sodium metaaluminate and manganese dihydrogen phosphate; and c. regulating the pH value of the solution to 3-5 with phosphoric acid. On the basis of chromium-free passivation, the surface treatment solution ensures the corrosion resistance of the tinned plate without degrading the sulfur resistance, and also has excellent paint adhesiveness.

The invention relates to a preparation method for a phosphite-chitosan oligosaccharide composite biological medical fertilizer. The phosphite- chitosan oligosaccharide composite biological medical fertilizer is prepared from phosphite, chitosan oligosaccharide and biomass vinegar in a weight ratio of 40-60 to 5-15 to 200-375; a combination technology is adopted to prepare the compound fertilizer which integrates the effects of pesticide and fertilizer into a whole and the preparation method comprises the following steps: preparing a chitosan oligosaccharide-biomass vinegar compound liquid; preparing a phosphite-biomass vinegar compound liquid; preparing the phosphite-chitosan oligosaccharide composite biological medical fertilizer. The phosphite-chitosan oligosaccharide composite biological medical fertilizer is a bio-fertilizer with double effect of pesticide and fertilizer and ability of both prevention and treatment; the medical fertilizer is free from residue and pollution, and is safe and environment-friendly; the medical fertilizer is not only a bio-fertilizer but also a bio pesticide; meanwhile, the fertilizer the fertilizer is also a situ repair agent for soil polluted by heavy metals.

The invention relates to a low-emission static oxygen-control biologically-enhanced humification composting method. The method comprises the following steps: respectively crushing organic wastes intoparticles with the particle size of less than 5 cm; uniformly mixing and stirring according to a weight ratio; adding a biologically-enhanced composite microbial agent accounting for 0.1-0.5% of the total amount of the mixture and allowing the water content of the organic waste stock to be 60-65%, the carbon-nitrogen ratio to be 23-30, and the volume weight to be 700-950 kg/m<3> to obtain a composting raw material. Air with a supply amount of 0.40-0.45 m<3>/h/m<3>, air with a supply amount of 0.28-0.38 m<3>/h/m<3> and air with a supply amount of 0.13-0.26 m<3>/h/m<3> are respectively providedthrough high-pressure aeration pipes in the three stages of compost temperature rise, high temperature and temperature reduction to fully decompose organic matters; and after fermentation is completed, the water content of a finished product fertilizer is 33-42%, the volume weight is reduced to 400-650 kg/m<3>, the volume of a pile body is reduced by 30-50%, and meanwhile, emission of methane, nitrous oxide, ammonia gas and hydrogen sulfide is reduced.

A deodorizing and passivating cleaning agent for oil refining devices belongs to the technical field of device cleaning agents and is characterized by including (in weight): 20 parts of passivator, 10-14 parts of deodorant, 7-9 parts of active components, wherein the deodorant is compounded by low-alkali sodium hypochlorite, ultrafine sodium silicate and glyoxal diamine, the active components aretetrakis hydroxymethyl phosphonium sulfate (THPS) compound, and the passivator is low-alkali sodium hypochlorite and THPS. Compared with the prior art, the deodorizing and passivating double-effect cleaning agent for the oil refining devices has two functions of deodorizing and passivating, and two effects of deodorizing and passivating can be realized by one-step cleaning process during use of the oil refining devices. Equipment can be cleaned at normal temperature and normal pressure during use, heating is omitted and safety and convenience are achieved.

The invention discloses a production method of a crystalline silicon solar cell. The production method includes the steps of texturing the front surface of a silicon wafer; performing P diffusion to the front surface of the silicon wafer, polishing the back of the silicon wafer to generate a SiO2 layer, removing the peripheral P diffusion layer, and removing phosphorosilicate glass on the front surface of the silicon wafer; forming a reflection-degreasing film on the front surface of the silicon wafer; and respectively subjecting the front surface and the back of the silicon wafer to silk screen printing to form electrodes. By the use of the production method, the back surface of the silicon wafer can be bright as a mirror, and reflectivity of the back of the silicon wafer is improved effectively. In addition, the smooth back surface allows for formation of evener aluminum back field. The formed SiO2 layer functions in surface passivation, so that minority carrier lifetime can be prolonged. Photoelectric conversion rate of the solar cell produced by the production method can be improved greatly.

The invention discloses a doped silicon quantum dot light emitting diode device which comprises a silicon substrate, a sedimentary silver nanometer particle layer, a plurality of layers of SiNx films, a transparent electricity conducting film AZO layer and an Si3N4 passivation layer. The SiNx films are deposited on a silver nanometer particle structure, are evenly distributed and contain doped silicon quantum dots. The invention further discloses a preparation method of the light emitting diode. The method comprises the steps of utilizing the electroluminescent characteristic of the doped silicon quantum dot-SiNx films to constitute a light emitting active layer of the light emitting diode, and utilizing doping to passivate quantum dots, and enhancing the radiative recombination of an electron hole through a p-n node formed by the doping silicon quantum dot and the silicon substrate. Further, the silver nanometer structure is used for enhancing the strength of electroluminescence, and the doped silicon quantum dot light emitting diode device improves the light emitting efficiency of a light emitting component and is compatible with the traditional CMOS technology.

The invention discloses a chemical product, namely long-term antirust grease, which ensures that the production cost is relatively reduced and the antirust time is also prolonged. The effective compositions of the long-term antirust grease comprise machine oil, stearic acid, calcium hydroxide and barium mahogany sulfonate. The operation process of the production technology of the long-term antirust grease is as follows: adding a small amount of machine oil, the stearic acid, the calcium hydroxide and the barium mahogany sulfonate in a reaction kettle first, injecting a certain amount of water, fully saponifying the mixture when the temperature is increased to 130 DEG C, adding remaining machine oil into the reaction kettle, and ensuring that the reaction kettle is subjected to thermal insulation at a temperature of 100 DEG C or so for about 1 hour. The long-term antirust grease can resist from being exposed to the sun and rain; after a metal fastener is coated with the long-term antirust grease, the antirust function is remarkably improved, the antirust performance can reach three years, and the technical problem that the antirust time of old products does not exceed one year is solved; in addition, the long-term antirust grease uses raw materials which are purchased on negotiation, has simple process operation and relatively reduces production cost; and the long-term antirust grease is applicable to the corrosion prevention and lubrication of bolts at various positions such as rail joints, concrete sleepers, railway switches, bridges and so on, and has certain acid, alkali and salt resistance.

The present invention relates to a method for improving rice eating quality and storage period, which is characterized in that: a lactic acid solution is slowly added in a manner of atomization, so that the rice is in a weak-acid and high-humidity environment, low-dose X-ray irradiation is used to activate the enzymes in rice for some time, then hot air and microwave are combined to treat the rice to produce moderate gelatinization, and at the same time the insect enzyme bacteria in the rice are killed. The method can significantly improve the eating quality and the storage period of rice, slow humidification by atomization and low temperature and high humidity retarding treatment can effectively reduce the rice fissuring rate, and the loss of nutrients is reduced.

The invention discloses an organosilicon waterproof coating material. The organosilicon waterproof coating material is prepared from the following ingredients in parts by weight: 30-50 parts of methyl silicate, 20-30 parts of dimethyl siloxane, 3-5 parts of a silane coupling agent, 10-15 parts of methyl silicone oil, 0.2-1 part of an antifoamer, 5-10 parts of deionized water and 10-20 parts of silicon dioxide. The coating material disclosed by the invention can permeate into a wall by several millimeters and form reticular waterproof films on the surface and interior of the wall so as to improve the waterproof effect, the waterproof films cannot close capillary pores of a base material, and moisture still can spread out from the interior of a wall body, so that waterproof and air-permeable effects are achieved; the coating material is non-toxic, non-combustible, non-explosive, non-volatile, environment-friendly and safe, is free from irritant odors and can be mixed and dissolved with water; the wear resistance is good, and the service life is long; the coating material has a passivating action, is un-rusty to reinforcing steel bars and is wide in range of use; the use is convenient, and the cost is low.

The invention provides a heavy metal contaminated farmland soil remediation agent. The heavy metal contaminated farmland soil remediation agent is prepared from, by weight, 10-25 parts of medical stone powder, 15-27 parts of carbonized rice husks, 10-25 parts of steel slag powder, 10-20 parts of weathered coal, 10-25 parts of lime, 10-25 parts of white carbon black and 12-24 parts of organic fertilizer. The heavy metal contaminated farmland soil remediation agent is applied to a soil surface of a heavy metal contaminated farmland and evenly mixed with soil, the soil moisture is kept to reach the maximum field water-holding capacity, and crops can be planted 5-8 days after balance. Heavy metals in the soil are quickly, efficiently and stably passivated through multiple modes such as combined precipitation, adsorption, complexing and acid-base buffering, the activity of the heavy metals in the soil is reduced, the passivated heavy metals are prevented from being activated again, and theeffect of finally reducing the activity of the heavy metals in the farmland soil is achieved.

The invention discloses a marine component protective coating and a construction method thereof. The protective coating has a three-layer structure, wherein the bottom layer is a polypyrrole thin film which is polymerized on the surface of a steel component via an electrochemical method; the middle layer is an epoxy coating; the surface layer is one of polyurethane acrylate coating, epoxy acrylate coating and polyurea coating. The construction method comprises the steps of polishing a workpiece, then polymerizing the polypyrrole thin film on the surface at constant potential and sequentially coating the workpiece with the epoxy coating and the surface layer. The marine component protective coating has favorable binding force, is excellent in rotproofness and weather fastness, is long in service life in marine environment and can be applied to the long-acting protection of marine components.

The invention provides a polyaniline/MOF composite coating electrode material and a preparation method and application thereof. The coating electrode material is formed by combining a component A, a component B and a component C according to the mass ratio of m(component A) to m (component B) to m(component C) being (1.5-2.5):(1-5):(800-1200). The component A is polyaniline (PANI), the component Bis an MOF structural material (Co/Co4N-N), and the component C is epoxy resin. According to the preparation method, the polyaniline material is modified by doping the MOF structure material, so thatthe electrochemical performance of the polyaniline material is improved, and then the epoxy resin base material is modified by utilizing the modified polyaniline material. The Q235 steel is taken as aresearch object, so that the corrosion protection performance of the epoxy resin base material is improved, and the corrosion resistance of the Q235 steel in a corrosion environment is effectively improved. A process route achieving the best performance is obtained by carrying out experimental exploration on a key material part.

The invention provides a solar cell antireflection film. The solar cell antireflection film is composed of a non-crystalline silicon layer, a first silicon nitride film and a second silicon nitride film, wherein the non-crystalline silicon layer, the first silicon nitride film and the second silicon nitride film are stacked in sequence. The non-crystalline silicon layer is arranged on the surface of a solar cell silicon wafer. The invention further provides a manufacturing method of the solar cell antireflection film. In the manufacturing process of the antireflection film, the non-crystalline silicon layer, the first silicon nitride film and the second silicon nitride film are deposited on the surface of the solar cell silicon wafer with a plasma enhanced vapor deposition method. The solar cell antireflection film has both the inactivation function and the antireflection function, and therefore the conversion efficiency of a solar cell can be improved easily.

The invention relates to a preparation method of carbon-based metal anticorrosive paint, which belongs to the technical field of paint preparation. The shaddock peel with a loose porous structure is used as a raw material and mixed with biogas slurry and metal salt solution after being crushed, finally the mixture is mildewed at a high temperature and high humidity condition, then a mildewed product is carbonized and reacts with long-carbon-chain alkyl acyl chloride to obtain a pre-modified charcoal, finally the pre-modified charcoal is finally modified by utilizing microorganisms and grease to obtain modified biological porous carbon, and the modified biological porous carbon is used as filler to be mixed with other raw materials, so that the carbon-based metal anticorrosive paint is finally obtained. According to the carbon-based anticorrosive paint prepared by the invention, the compatibility between the carbon-based filler and the paint matrix is good, no clustering precipitate iseasy to generate, the anticorrosive effect is excellent, and the application prospect is wide.

The invention discloses a composite microbial soil remediation agent and a preparation method thereof. The composite microbial soil remediation agent is prepared from the following raw materials in parts by weight: 10-18 parts of a composite microbial agent, 30-70 parts of organic matters and 10-25 parts of inorganic raw materials, the compound microorganisms are prepared from the following microorganisms in parts by weight: 0.5 to 5 parts of bacillus subtilis, 0.5 to 5 parts of bacillus licheniformis, 0.3 to 4 parts of bacillus mucilaginosus, 0.2 to 3 parts of bacillus megaterium and 0.2 to 3 parts of purpureocillium lilacinum; the organic matter is crop waste; the inorganic raw material is a mixture of sepiolite, medical stone and apatite; the compound microorganism soil remediation agent has a good heavy metal contaminated soil remediation effect and has a remarkable effect in the aspects of improving the physical and chemical properties of soil and remediating soil pollution, the remediation rate of the heavy metal contaminated soil reaches 50% or above, and the yield of crops can be remarkably increased.

The invention relates to a modified environment-friendly waterborne anticorrosion coating and a preparation method thereof, and belongs to the field of waterborne propylene anticorrosion coatings. Thecoating comprises waterborne emulsion and an organic compound modifying agent, and the organic compound modifying agent is at least one of organic amine, an organic amine derivative, organic phosphine and an organic phosphine derivative. According to the coating, a chemical bond is formed through other components such as strongly polar groups in the organic compound modifying agent, base materials, pigments and fillers and film forming matters, multiple modification of the base materials, the pigments, the fillers and the film forming matters is achieved, the coating has slow-release and passivation functions of inorganic rust-proof pigments and further has a shielding function absented by the inorganic rust-proof pigments, the coating has a long-term multiple anticorrosion function, theadhesive force of the coating reaches a level 0, optimal salt fog resistance cannot generate bubble and get rusty for 1000 hours or more, and optimal salt water resistance cannot generate bubble and get rusty for 600 hours or more.

The invention discloses a cucumber grafting cultivation method, which is characterized in that it includes the following aspects: (1) seed detoxification, mixing cucumber and loofah seeds, and using abamectin solution to carry out atomization detoxification treatment; (2) For storage, add ethanol to the selenium-enriched fermentation liquid, put the seeds in and store them at low temperature for 8-10 days, and then carry out germination treatment; (3) For seedling cultivation, mix loess and organic fertilizer to lay seedling boxes, adjust the seedlings after sowing Indoor carbon dioxide and pressure for cultivation; (4) Grafting, cucumber seedlings and loofah seedlings are grafted when they grow to 4-6 true leaves, the incision is soaked in a growth-promoting agent, and the incision is wrapped after docking; (5) Daily management, regular use The growth-promoting agent and the selenium-enriched fermentation liquid are sprayed and watered on the cucumber grafted plants, and the cultivation temperature is adjusted, and the seedlings are raised about 20 days after grafting and then transplanted.