41results about How to "Meet friendly" patented technology

The invention relates to an ultraviolet photo-cured coating for the electrostatic prevention of the surface of plastic and a preparation method thereof, in particular to a photo-cured coating containing conductive powder of a metal oxide system or composite conductive powder. The coating comprises the following compositions in weight percent: 30 to 70 percent of oligomer, 25 to 65 percent of active thinner, 0.5 to 10 percent of light evocating agent, 5 to 40 percent of conductive powder, 0.2 to 8 percent of additive and 0 to 50 percent of solvent. As the added conductive powder of the metal oxide system and the composite conductive powder is white or light color, the prepared photo-cured has the characteristic of easy color modulation, has lasting antistatic property, high rigidity and wearing resistance, can be used for electrostatic prevention of the surface of electronic equipment, plastic vessel, shell of an electric appliance, office supplies, sports equipment and other plastic products.

The invention discloses a synthesis method of imino butylated amino resin. The synthesis method comprises the following steps: adding butyl alcohol and tetramethylol melamine into a reaction kettle according to a certain ratio, adjusting the rotating speed of a stirrer of the reaction kettle to 50-120r / min, adding acid to adjust the pH value to 3.0-5.0, raising the temperature to 80-95 DEG C and reacting for 30-60min while preserving the heat; adding alkaline to adjust the pH value to 8.0-10.0, gradually raising the temperature to 90-120 DEG C, and dealcoholizing and dehydrating at normal pressure; starting a vacuum pump, dehydrating under a vacuum condition for 1-3h; and filtering to obtain a colorless thick liquid product. The method is applied to the industrial production of the imino butylated amino resin, is simple in process, capable of saving energy, simple and convenient in aftertreatment, low in production cost and little in discharged wastewater and conforms to the concepts of environment friendliness and resource saving.

The invention discloses a dynamic and static pressure ceramic sliding bearing lubricated by water or water-based lubricating liquid, which comprises a bearing sleeve, wherein a flange is arranged at one end of the bearing sleeve, and external threads are arranged at the other end of the bearing sleeve; a ceramic shaft sleeve is assembled at the outer layer of the bearing sleeve; a ceramic shaft bushing which comprises a special liquid cavity and a liquid hole structure is arranged outside the ceramic shaft sleeve; a shaft bushing sleeve with the special liquid cavity and the liquid hole structure is assembled at the outer layer of the ceramic shaft bushing; and the bearing of the invention also comprises a bearing end cover, wherein a ceramic ring is assembled at the inner end of the bearing end cover, and internal threads matched with the external threads of the bearing sleeve are arranged on the inner ring of the bearing end cover. The bearing of the invention can improve the wear resistance and the corrosion resistance, can operate in the poor water condition where sandy solid particles are contained, can be lubricated by the water-based lubricating liquid formed by adding other additives into water or water-based liquid; at the same time, the bearing has larger carrying capacity and rigidity, and can ensure a safe and stable operating state, thereby greatly prolonging the operation life.

The invention discloses a low-temperature quick-drying type polyurethane acrylate coating. The coating consists of a component A and a component B by a mass ratio of 100 to (20-27), wherein the component A comprises the following components in percentage by mass: 20-45 percent of hydroxyl acrylic resin, 4-7 percent of amino resin, 2-12 percent of modified polyaspartic acid ester, 4-10 percent of a pigment, 8-20 percent of filler, 0.1-2 percent of a dispersant, 0.1-2 percent of a defoaming agent, 0.1-2 percent of a flatting agent, 0.1-2 percent of a silane coupling agent, 0.1-2 percent of a PH regulating agent and 15-25 percent of a mixed solvent; the component B is isophorone diisocyanate. The coating disclosed by the invention has the characteristics of being rapid, cured at low temperature, excellent in physical and mechanical properties and the like, is excellent in adhesive force to various base materials (iron, aluminum alloy, zinc plated plates, stainless steel and the like), and can be widely applicable to industrial coating of costly furniture, steel structures, railway locomotives and the like. The invention also discloses a preparation method of the low-temperature quick-drying type polyurethane acrylate coating.

The invention provides a preparation method and uses of an iron-tannic acid skeleton modified composite film. The preparation steps comprise: preparing an iron salt solution and a tannic acid solution, mixing the iron salt solution and the tannic acid solution to obtain a mixed solution, placing a stainless steel net into the mixed solution, immersing, taking out, and drying to obtain the iron-tannic acid skeleton modified composite film, wherein the prepared film is named FeIII-TA modified composite film. According to the present invention, through the one-step immersing and self-assembly method, the FeIII-TA modified composite film is supported onto the surface of a metal net to form an organic-inorganic hybrid rough structure; and the operation process of the preparation method is simple, the raw materials are easy to obtain and non-pollution, and the environmental friendliness is met.

The invention discloses a wharf structure suitable for a silt coast. A direction which is close to the sea is used as a front direction, and a direction which is relatively away from the sea is used as a rear direction. The wharf structure comprises a causeway, a front diaphragm wall, a rear diaphragm wall, a partition, a plurality of coupling beams and a wharf upper part structure, wherein the front diaphragm wall, the rear diaphragm wall and the partition form a cylindrical caisson structure; the coupling beams are connected with the rear diaphragm wall and a pile foundation; and the wharf upper part structure covers the front diaphragm wall, the rear diaphragm wall, the partition and the pile foundation. By the structure, construction difficulty and engineering investment costs are reduced effectively. A construction method comprises the following steps: (1) constructing the causeway by bagged sand quilts; (2) reinforcing the causeway and silt filled at the rear of the causeway in a blowing manner, reinforcing new silt filled in the blowing manner, and constructing the front diaphragm wall, the rear diaphragm wall and the partition to form the cylindrical caisson structure when the bearing capacity of foundation soil reaches 5 tons at least; (3) excavating causeway remaining earthwork in front of the front diaphragm wall and earthwork under a natural silt surface, and enabling the front edge of a wharf to reach designed water depth; and (4) constructing the pile foundation and the coupling beams, and then constructing the wharf upper part structure. The construction method is simple.

The invention discloses a method for extracting oil and protein of peach kernel, which is characterized in that: peach kernel is adopted as a raw material, water is adopted as a solvent, and the oil and the protein of the peach kernel are simultaneously extracted with an enzymolysis and mechanical centrifugal way. The method can improve the oil outputting efficiency, and the produced crude oil has high quality and light color and is easy to be refined; the method is free from solvent residue, can reduce the energy consumption, reduces the environmental harm, and conforms to the sustainable development principle of environment friendliness and energy conservation; and at the same time, the protein of the peach kernel can be simultaneously extracted, since the enzymolysis treatment condition is moderate, the degeneration of protein of the oil meal after being degreased is low, the utilizability is good, and the processing added value and the comprehensive utilization rate of the peach kernel can be improved.

The invention relates to the technical field of composite material preparation, in particular to a SiOC composite negative electrode material for assembling a lithium ion battery negative electrode and a preparation method of the SiOC composite negative electrode material. The preparation method comprises the steps of firstly, obtaining porous SiOC ceramic powder by preparation of wood powder andsolid polysiloxane; secondly, combining the porous SiOC ceramic powder with graphene oxide; and thirdly, preparing a porous SiOC / graphene composite material by employing a thermal reduction method. Aporous template comes from the wood powder and also can come from bagasse, straw, tobacco stalk and the like, and the problem of waste recycling can be solved; moreover, a large amount of negative charges exist on a surface of graphene oxide, a graphene oxide / SiOC composite material with an ordered structure can be formed, and a porous-passage composite negative electrode material can be obtainedafter thermal reduction; and by the porous structure of the composite material, the volume change of SiOC during the charge-discharge process of a lithium ion battery can be reduced, meanwhile, the conductivity of the composite material is improved, and the defects of irreversible capacity loss and voltage lagging of SiOC can be effectively overcome.

The invention discloses an environmentally-friendly tile binder, and a preparation method and a use method thereof. The environmentally-friendly tile binder comprises, by weight, 70-85% of an organosilicone emulsion, 10-30% of polymer resin, 1.5-3.5% of a silane coupling agent, 0.1-0.3% of a mildew inhibitor, 0.2% of a wetting agent, 0.5-1.5% of an antifreeze agent and 0.1-0.3% of a defoaming agent. The tile binder has the advantages of excellent adhesion, high mechanical stability, good water and weather resistance, low VOC and no environmental pollution problem, is an environmentally-friendly binder, and can be used in large buildings, railway engineering, road and bridge engineering and pipeline engineering.

The invention discloses a method for degrading naphthalene in soil through the combination of microwave induction and catalytic oxidation. The method is characterized by comprising the following steps: mixing 5g of naphthalene-polluted soil sample, 10-50mg of catalyst and 0.6-1.0 g of distilled water, adding the above materials into a polytetrafluoroethylene reactor, and degrading the materials ina microwave digestion instrument for degradation, wherein the concentration of the soil sample is that 10mg of naphthalene is contained in every 1kg of soil, the microwave frequency is 2450MHz, the output power is 400-700W, the output pressure is 0.2 Mpa, and the microwave induction treatment time is 2-10min. A single microwave induction method and a catalytic oxidation method are combined, and the purpose of degrading polycyclic aromatic hydrocarbon in the soil through the combination of microwave induction and catalytic oxidation. The method is simple and easy to implement and has a good degradation effect on the refractory typical pollutant polycyclic aromatic hydrocarbon naphthalene in the soil.

The invention discloses a phenolic molding compound for forming automobile parts and a preparation method of the phenolic molding compound. The phenolic molding compound comprises the following components by weight: 20-35% of phenolic resin, 40-60% of an inorganic substrate, 8-12% of a filler, 2-5% of a curing agent, 0.1-0.2% of a mold release agent, 0.5-1.0% of a colorant, 0.2-0.3% of a surfactant and 0.3-0.5% of a toughening agent. The phenolic molding compound has greatly improved performance, can be fully melted and kneaded, and also meet requirements of environmental protection.

The invention discloses an automobile cable insulating material and a preparation method thereof. The automobile cable insulating material is characterized by being prepared by, by weight, 3-6 parts of EVA resin, 2-4 parts of anhydrous lithium chloride, 90-100 parts of polyvinyl chloride, 10-15 parts of magnesium hydrate, 5-10 parts of antimony trioxide, 10-14 parts of nanometer clay, 0.3-0.7 part of silane coupling agent kh550, 0.5-1 part of polyvinyl alcohol, 0.1-0.3 part of sodium dodecyl benzene sulfonate, 0.5-2 parts of sodium bicarbonate, 2-5 parts of styrene, 0.02-0.05 part of potassium persulfate, 10-15 parts of dioctyl terephthalate, 3-5 parts of tributyl citrate, 1-3 parts of hard wax, 3-5 parts of fumed silica, 2-4 parts of wood flour and an appropriate amount of water. The cable material can meet the requirement for environmental friendliness and has good comprehensive performance, the preparation method is simple and controllable, and the cost is low.

The invention relates to a low and middle grade phosphate dump leaching method with compound bacterial strains and waste biomass being combined. The method includes the steps that low and middle gradephosphate and the waste biomass are subjected to mixed dump leaching after being crushed to be made into powder according to the characteristics of the low and middle grade phosphate and the waste biomass, and a compound bacterial solution is sprayed; cellulose degradation bacteria in the compound bacterial solution are used for decomposing the waste biomass, and a carbon source capable of beingutilized directly is provided for heterotrophic phosphate-solubilizing bacteria in the compound bacterial solution; and then the heterotrophic phosphate-solubilizing bacteria are used for dissolving the low and middle grade phosphate, and finally low-cost large-batch development and utilization of the low and middle grade phosphate can be realized. The low and middle grade phosphate dump leachingmethod has the various advantages that processing capacity is high, environmental protection is achieved, cost is low and the technological process is simple. The leaching rate of phosphorus (phosphorus pentoxide) in the low and middle grade phosphate can reach 58% or above after dump leaching lasts for nine months.

The invention discloses cement produced by virtue of waste sintered brick powder and a production method for the cement. The cement is prepared from the following components in parts by weight: 45.5 to 67 parts of Portland cement clinker, 20 to 60 parts of waste sintered brick powder and 3 to 4.5 parts of gypsum. According to the cement and the production method for the same, Portland-pozzolana cement is produced by virtue of the waste sintered brick powder as an artificial pozzolana mixture instead of burnt clay, burnt shale and broken clay bricks, so that the technical problems of environmental pollution and resource waste caused by the waste sintered brick powder produced in a construction waste recycling process are effectively solved, a new manner for recycling the waste sintered brick powder is provided, natural clay and shale resources are also saved, energy consumption in sintering processes of the burnt clay, the burnt shale and the broken clay bricks is reduced, the production cost of the cement is greatly reduced, requirements of cities on cement are met, reclamation of construction waste is realized, a novel technology for a sustainable development strategy is provided, and the cement and the production method for the same are consistent with the policies of resource saving and environmental protection.

The invention relates to a high-resilience polylactic acid segmented copolymer and a preparation method thereof, and relates to the technical field of high polymer material synthesis. The invention discloses an ABA (Acrylonitrile Butadiene Styrene) type triblock copolymer (PLAbPBSObPLA) of polylactic acid-b-poly (butylene succinate-co-diphenyl ether dicarboxylate) ester-b-polylactic acid. The preparation method comprises the following steps: preparing hydroxyl-terminated poly (butylene succinate-co-diphenyl ether dicarboxylic acid butanediol) ester by taking 1, 4-butanediol, succinic acid anddiphenyl ether dicarboxylic acid as raw materials, and performing ring-opening polymerization reaction on hydroxyl-terminated polyester serving as a macromolecular initiator and lactide (LA) to prepare the polylactic acid segmented copolymer. The method is simple to operate, can perform polymerization through a common device, and is easy for industrial production. The block copolymer obtained by the invention has excellent resilience and biodegradability, conforms to the development trend of resource-saving and environment-friendly high polymer materials, and has a wide application prospect.

The invention provides a method for preparing atorvastatin calcium intermediate. The method comprises the steps of dissolving compound A and compound B into a solvent with a molar ratio of A to B of 1:(1.0-1.5), heating to 30-60 DEG C, stirring to dissolve, slowly dripping concentrated acid with a mole number of 2-8 times of that of compound A for a reaction for 16-36 hours at 80-110 DEG C, removing water formed during the reaction by using a water separator after the reaction, removing the solvent through rotary dying, dissolving with ethyl acetate, adding petroleum ether dropwise for recrystallization and treating for several times to obtain the final product. The two raw materials A and B used in the method are cheap and available, the catalyst of the reaction is common acid, and the product of the side reaction is only water. The obtained product has a purity of over 98% and a yield of about 80% and accords with the requirements of friendly environment and green chemistry.

The invention relates to a production technology of salicylic acid. When the salicylic acid is neutralized, the mass ratio of a sodium salicylate dilute sulphuric acid: salicylic acid washing water is (2-2.5):(1-1.3):(2-3). This production technology is simple, the use amount of cooling water is greatly decreased, and the cost is saved; the process time is shortened, and the productivity is improved without device addition; meanwhile the temperature of a reactor material outlet is reduced, the production technology is environmentally friendly and is chemically green, and the economic and social benefits are effectively improved.

The invention discloses an efficient phosphorus removal agent and a preparation method thereof. The efficient phosphorus removal agent is prepared from, by weight, 4-8 parts of manganolite, 5-10 parts of magnetite, 3-5 parts of carbon residues, 3-5 parts of a binder, 3-5 parts of sodium sulfite, 10-30 parts of ferric trichloride, 0.5-0.7 part of cobalt chloride, 80-100 parts of polymeric aluminum, 2-4 parts of sodium hypochlorite, 6-8 parts of polymethyl diallyl ammonium chloride, 0.02-0.06 part of nonionic polyacrylamide and 180-220 parts of water. The binder is one or two of cement, sodium borate and plaster. The treatment effect is obvious, the treatment input is small, and the treatment cost is low; environmental protection can be achieved, waste recycling is achieved, the phosphorus removal efficiency is improved by 40% or above compared with liquid ferric trichloride, the application prospect is good, the requirements for environmental friendliness and circular economy can be met, and good social and economic benefits are obtained.

The present invention discloses an OLED mask assembly preparation method, which comprises: S1, a mask opening production step, wherein a laser beam emitted by a laser cutting head and forming the acute angle with the plane of a mask substrate runs on the mask substrate according to the preset running track, and forms a mask opening on the mask body of the mask substrate so as to form a mask plate, and the area S1 of the region formed by enclosing the mask opening edge close to one side of the laser cutting head is less than the area S2 of the region formed by enclosing the edge depart away from one side of the laser head; and S2, a mask assembly step, wherein the mask plate formed through the mask opening production step is arranged on the outer frame through a laser welding process to form the mask assembly. With the OLED mask assembly preparation method of the present invention, under the premise of meeting of environmental protection, the high quality opening requirement of the mask plate can be well met, ie., environmental pollution can not be produced when application of the laser cutting process to produce the mask opening, and the shading effect of the mask plate mask opening during evaporation plating is effectively reduced.

The invention discloses a charcoal-based supramolecular self-assembled carbon nitride composite photocatalytic material, which is mainly prepared from alkali modified biomass charcoal and supramolecular self-assembled carbon nitride, and the self-assembled carbon nitride is prepared from melamine and cyanuric acid. The invention further discloses a preparation method and application of the composite photocatalytic material. The specific surface area and the physical and chemical properties of the biomass charcoal can be effectively improved through alkali modification, the morphology of g-C3N4 is regulated and controlled through a supramolecular self-assembly method, the g-C3N4 has the large specific surface area, the high light quantum efficiency and the narrow band gap width, and the photocatalytic performance of the g-C3N4 material is effectively improved to a certain degree; and on the other hand, the alkali-modified biomass charcoal and a carbon nitride material are compounded, so that effective recycling of agricultural resource wastes is effectively realized, the atmospheric pollution problem caused by straw incineration is relieved, the separation efficiency and mass transfer rate of g-C3N4 photo-induced electron holes are effectively improved, and the photocatalytic performance of the material is further enhanced.

The invention relates to a method for degrading phosphorus-containing flame retardant wastewater. The method comprises the following steps: adding a compound reagent with a weight percentage ratio of0.01-0.05% of wastewater into the phosphorus-containing flame retardant wastewater, adjusting the pH value to 2-7, putting the mixture into a constant-temperature oscillator, and adjusting the temperature to 20-40 DEG C, adjusting the rotating speed to 100-200 rpm, carrying out oscillation for 0.5-2.5 hours, taking out the wastewater from the constant-temperature oscillator, adding a liquid phosphorus removal agent with a weight percentage ratio of 0.1-0.2% of the wastewater, uniformly carrying out mixing, carrying out standing for a reaction for a period of time, then adjusting the pH value to be neutral, carrying out standing for a period of time, and taking the supernatant of the sample to detect the concentration of residual total phosphorus in the wastewater. According to the adoptedmulti-step processing method, firstly, organic phosphorus and inorganic phosphorus in a polymerization state in the material wastewater are adsorbed by an adsorption material, then flocculation precipitation is carried out on the inorganic phosphorus, and finally the purpose of efficiently removing total phosphorus is achieved. In addition, a three-step method comprising adsorption, flocculation precipitation and flocculation precipitation is selected for treating the wastewater, and the effect is better.

The invention discloses a method for enhancing hydrogel through microbial mineralization. The method comprises the following steps: 1) culturing urease bacteria liquid and preparing concentrated bacteria liquid; 2) preparing a uniform and transparent gel matrix solution, then adding urea and calcium chloride, uniformly stirring, adding the concentrated bacteria solution at room temperature, and uniformly stirring to obtain a mixed solution; and 3) carrying out vacuum filtration on the mixed solution to remove bubbles, molding by using a mold, and carrying out freeze-thaw circulation to obtainthe microbial mineralization enhanced hydrogel. According to the method, a calcium carbonate network structure can be generated in the gel through microbial mineralization, thereby achieving the purpose of gel enhancement.

The invention discloses a preparation method of a polypyrrole / straw conductive composite material. The preparation method comprises the following steps: firstly washing smashed straws with water, drying the straws, then adding deionized water and a pyrrole monomer, fully stirring to disperse the components, adding an ammonium persulfate solution, carrying out oxidative polymerization to enable polypyrrole to be covered on the surfaces of straw particles, carrying out suction filtering, washing the straws with deionized water, and finally carrying out vacuum drying to obtain the polypyrrole / straw conductive composite material. The polypyrrole / straw conductive composite material can be used as a conductive filler. According to the preparation method, the surface of straw powder is coated with the polypyrrole, so that the prepared conductive filler is extremely high in conductivity; furthermore, the straws are environment-friendly, readily available and relatively low in cost, so that the preparation method is suitable for large-scale production.

The invention belongs to the technical field of preparation of environmental functional materials, and particularly relates to a polyphenol-mediated prussian blue / quartz nano composite film and a preparation method and application thereof. With a simple impregnation method, tannic acid and iron ion complexes TA-Fe and Prussian blue PB are stacked and loaded on the surface of a quartz film layer bylayer, and the PB / TA-Fe (at) QF composite membrane with super-hydrophilic-underwater super-oleophobic performance similar to that of a lotus leaf surface organic-inorganic bionic structure is constructed; the preparation method of the composite membrane is simple, quick and cheap in operation process without wastes, and conforms to the concept of environmental friendliness. The PB / TA-Fe (at) QF composite membrane prepared by the method has an excellent oil-water separation effect and is suitable for separation of various oils and emulsions, and the separation rate reaches 99% or above; the composite membrane has good stability and recyclability, and still keeps good oil-water separation efficiency after the oil-water emulsion is repeatedly used for 10 times; and the composite membrane hasgood organic dye degradation performance and wide commercial application prospects.

The invention discloses a quantum dot-magnetic bead miRNA sensor based on DSN enzyme and its preparation method and detection method, through the covalent coupling of streptavidin on the surface of quantum dots and magnetic beads and biotin modified at the end of DNA Connect to construct QD‑DNA bioprobe and MB‑DNA bioprobe. The present invention utilizes the excellent optical properties of quantum dots, and the magnetic separation based on magnetic beads is more time-saving and more ideal in separation effect, and utilizes DSN enzymes to recognize and cut perfectly matched DNA double strands or RNA / DNA hybrids with high selectivity The DNA in the double strand can realize the characteristics of signal amplification, and a quantum dot-magnetic bead miRNA sensor based on DSN enzyme is prepared. The invention can realize highly sensitive and specific detection of miRNA, and will have potential applications in the fields of molecular biology, medicine and the like.

The invention discloses a hydrogen-steam combined cycle power generation system and method based on aluminum-water reaction. The hydrogen-steam combined cycle power generation system comprises a solar photo-thermal heat supply system, a renewable energy source power supply electrolytic aluminum oxide regeneration device, an aluminum-water reactor, a heat exchanger, a condenser and the like. Aiming at the problems of difficulty in reaction starting and low reaction degree of the aluminum fuel, the reaction degree and the reaction efficiency are improved by adopting a mode of coupling multiple activation modes. Aiming at the problem of waste heat utilization of the system, reaction water and generated water in the system are utilized to form cyclic utilization, heat exchange and heat supply are carried out, closed-loop heat exchange is carried out on water introduced into the system, and heat loss is reduced. Water in the system can be recycled, but part of water vapor is lost in the circulation process, and water needs to be supplemented regularly to continue the reaction. The aluminum-water reaction product and the water vapor are both used for power generation, carbon emission is basically not involved in the circulating power generation process of the system, renewable energy sources and solar energy are mainly used for power supply and heat supply, and the environmental hidden danger in the power generation process is reduced.

The invention discloses an environmentally-friendly tile binder, and a preparation method and a use method thereof. The environmentally-friendly tile binder comprises, by weight, 70-85% of an organosilicone emulsion, 10-30% of polymer resin, 1.5-3.5% of a silane coupling agent, 0.1-0.3% of a mildew inhibitor, 0.2% of a wetting agent, 0.5-1.5% of an antifreeze agent and 0.1-0.3% of a defoaming agent. The tile binder has the advantages of excellent adhesion, high mechanical stability, good water and weather resistance, low VOC and no environmental pollution problem, is an environmentally-friendly binder, and can be used in large buildings, railway engineering, road and bridge engineering and pipeline engineering.

The invention provides a preparation process of a chitin colloid. The process comprises the following steps: drying, crushing and sieving chitin solids to prepare chitin powder; dissolving in an organic acid to prepare a chitin acidic solution; and adjusting the pH to be not greater than 7 by alkaline liquor to prepare the chitin colloid. The process provided by the invention has the main advantages that the chitin colloid prepared in an ultrasonic vibrating environment in an ultrasonic cleaner is small in particle and loose, good in enzyme digestion effect and more suitable for enzymatic reaction; the chitin colloid is not filtered and washed, and the concentration of the chitin colloid can be precise; no buffer solutions are additionally prepared, so that the production cost is lowered; accidental damage to chitin by strong acids needs not to be worried as well as damage to the operators needs not to be worried; centrifugalization and repeated washing are avoided, so that a lot of electric energies and water resource are saved; the process is free from byproducts and environmental pollution and environmentally friendly.

The present invention discloses an OLED mask assembly preparation method, which comprises: S1, a mask opening production step, wherein a laser beam emitted by a laser cutting head and forming the acute angle with the plane of a mask substrate runs on the mask substrate according to the preset running track, and forms a mask opening on the mask body of the mask substrate so as to form a mask plate, and the area S1 of the region formed by enclosing the mask opening edge close to one side of the laser cutting head is less than the area S2 of the region formed by enclosing the edge depart away from one side of the laser head; and S2, a mask assembly step, wherein the mask plate formed through the mask opening production step is arranged on the outer frame through a laser welding process to form the mask assembly. With the OLED mask assembly preparation method of the present invention, under the premise of meeting of environmental protection, the high quality opening requirement of the mask plate can be well met, ie., environmental pollution can not be produced when application of the laser cutting process to produce the mask opening, and the shading effect of the mask plate mask opening during evaporation plating is effectively reduced.

The invention discloses a method for microwave-induced synergistic catalytic oxidation degradation of naphthalene in soil. The vinyl fluoride reactor was placed in a microwave digestion apparatus for degradation; the concentration of the soil sample was 10 mg naphthalene per 1 kg of soil, the microwave frequency was 2450 MHz, the output power was 400-700 W, and the output pressure was 0.2 Mpa. The processing time is 2-10 minutes. Combining a single microwave induction method and a catalytic oxidation method, the purpose of microwave-induced synergistic catalytic oxidation degradation of polycyclic aromatic hydrocarbons in soil is achieved. The invention is simple and easy to implement, and has good degradation effect on polycyclic aromatic hydrocarbon naphthalene, which is a typical pollutant that is difficult to degrade in soil.