121results about How to "Produce corrosion" patented technology

The invention discloses a cleaning agent for optical glass, which comprises the following components in weight percentage: 2-4% of long carbon chain dibasic acid; 6-10% of an anionic surfactant; 2-4% of an inorganic base; 2-6% of a nonionic surfactant; 2-4% of a special surfactant; 6-12% of a chelator; 10-20% of an organic base; and 40-70% of deionized water, wherein the long carbon chain dibasic acid is dicarboxylic acid with 21 carbon atoms, the anionic surfactant is dodecylbenzene sulfonic acid, the inorganic base is industrial NaOH, the nonionic surfactant is primary alcobol ethoxylate AEO9, the special surfactant is sodium POE nonylphenol ether sodiosulfosuccinate, the chelator is a mixture of Tetrasodium Ethylenediamine Tetraacetate and sodium gluconate, and the organic base is diethanol amine. The cleaning agent for optical glass provided by the invention has low corrosivity and good cleaning effect.

The invention relates to a composite gel inhibitor for preventing and controlling spontaneous combustion of coal in a coal mine and a preparation method thereof. The composite gel inhibitor provided by the invention comprises the following components in percentage by weight: 10 to 65.0 percent of graft copolymer, 0 to 4.00 percent of flame retardant, 20 to 60.0 percent of water glass, and the balance of water. The graft copolymer containing a -COOH functional group is obtained by adopting a water soluble polymer and unsaturated carboxylic acid monomers to perform graft copolymerization, and the composite gel inhibitor for preventing and controlling the spontaneous combustion of the coal in the coal mine is obtained by adding the flame retardant and the water glass into the graft copolymer. The flame retardant provided by the invention has the advantages of excellent retarding effect, environmental friendliness and the like.

The invention relates to the technical field of thin film transistor copper-molybdenum lamination etching, in particular to a TFT copper-molybdenum lamination film etching liquid composition. For the total weight of the composition, the composition comprises the following components: 1-30% of hydrogen peroxide by weight, 0.01-8% of hydrogen peroxide stabilizing agent by weight, 0.5-8% of phosphates by weight, 0.1-8% of inorganic acid by weight, 1-10% of metal chelating agent by weight, 0.01-5% of metal corrosion inhibitor by weight, and the balance of water. The etching liquid composition contains no fluorochemicals, so that the corrosion of a glass substrate or a silicon plate cannot be generated, no environmental pollution is generated, and the reaction is mild and easy to control; the metal chelating agent can generate copper-molybdenum ions through chelating to prevent decomposition of hydrogen peroxide from causing the life shortening and the production line danger; the copper-molybdenum etching speed is autonomously adjusted through primary cell reaction by phosphates; and the metal corrosion inhibitor is matched to prevent the copper shrinkage or the molybdenum shrinkage, so that the etching process is stable, the etching speed is proper, the etching angle is stabilized at 30-60 degrees, the critical size loss is low, and the later copper production performance is improved.

The invention provides a design method for a vertical constant force system. The vertical constant force system comprises a balance point constant force spring module, a gear and rack compensation module and a data acquisition and control module and is used for compensating the gravity generated in the process of ground validation of a spacecraft. The balance point constant force spring module comprises a compressed spring, a linear guide rail, linear bearings, rolling bearings, a spring jacket and connecting parts and is used for providing constant force at a balance point. The gear and rack compensation module comprises a gear and rack set, a motor and a fixing plate. When the spacecraft deviates from the balance point, the gear and rack compensation module can drive the balance point constant force spring module arranged at the lower end of the gear and rack compensation module to do acceleration and deceleration motion or uniform motion in the vertical direction to adjust force on the compressed spring, so constant force output is guaranteed. The data acquisition and control module comprises a motor driver, a control card, a high-precision tension sensor, a displacement sensor, a data acquisition card and an upper computer PC. The vertical constant force system can be used for providing the constant force in the vertical direction and compensating the gravity of the spacecraft and has the advantages being stable in operation, not prone to external interference, high in constant force accuracy and the like.

The invention provides a manufacturing method for a rinsing exposed aggregate colorful concrete external-hung wallboard and belongs to the technical field of the manufacturing of a concrete external-hung wallboard. The manufacturing method comprises the following steps: firstly, cleaning a mould platform; mounting a side mould; painting a rinsing exposed aggregate agent; pouring colorful concrete, and then starting an attaching type vibrator of the mould platform to vibrate; placing a reinforcing mesh, a metal connector and an embedded suspension center sleeve; pouring common concrete and adopting a flat vibrator for vibrating the concrete surface; after removing a wallboard from the mould, rinsing the surface of the colorful concrete; and after removing the mould, placing the end product of the external-hung wallboard to a temporary stacking frame and continuing maintaining. The manufacturing method provided by the invention has the advantages of low cost, simple construction, abundant architectural appearance effects, capability of effectively preventing and treating wall corrosion, and the like.

The present invention provides an organic aluminum plating method for a neodymium iron boron permanent magnetic material. The method comprises the following steps: (1) carrying out chamfering and polishing; (2) carrying out degreasing and deoiling; (3) carrying out pickling and derusting; (4) carrying out organic aluminum plating: adopting an aluminum plating solution to carry out aluminum layer plating on the surface of the neodymium iron boron permanent magnetic material under the protection of inert gas, wherein the aluminum plating solution comprises AlCl3, LiAlH4 and tetrahydrofuran; (5) passivating the aluminum plating layer. With the organic aluminum plating method of the present invention, the neodymium iron boron permanent magnetic material can have the excellent corrosion resistance.

The invention relates to a method for mineralizing seawater desalted water, which comprises the following steps: keeping constant temperature on the seawater desalted water, adding limestone, introducing CO2 and stirring, performing pumping filtration on a reaction solution after completing the reaction to obtain a clarification liquid, and adjusting the pH value to 7.5-8.5 to obtain the mineralized seawater desalted water. The mineralization method is used for mineralizing the seawater desalted water, a method is employed for dissolving the limestone ore, the hardness of the seawater desalted water is increased; carbon dioxide is used for promoting the dissolution of the limestone, the hardness of the seawater desalted water is increased; thereby the prepared seawater desalted water increases the total alkalinity, the total hardness and pH value of the water body. LSI saturation index can be finally enhanced, and the purpose for reducing Larson coefficient is reduced. the hardness of the seawater desalted water is high, and the seawater desalted water contains mineral matters Ca<2+> and Mg<2+> required by human body, the stability of the water quality is good, and the water quality can satisfy the requirements of biochemical criterion, erosion performance and corrosivity of the drinking water.

The invention provides a load-type phosphotungstic acid catalyst. The catalyst comprises a hollow-sphere mesoporous silica carrier and phosphotungstic acid loaded on the hollow-sphere mesoporous silica carrier. When the total weight of the catalyst is taken as a reference, the content of the phosphotungstic acid is 5-50 wt%, and the content of the hollow-sphere mesoporous silica carrier is 50-95 wt%. The invention further provides a preparation method of the load-type phosphotungstic acid catalyst and an n-butyl acrylate preparation method with the load-type phosphotungstic acid catalyst. The load-type phosphotungstic acid catalyst provided by the invention can be repeatedly used through recovery, has better catalytic performance compared with that of a homogeneous catalyst, namely concentrated sulfuric acid, and does not erode equipment.

The invention discloses a snow melting method for an expressway. The central isolation belt or two sides of the expressway is / are provided with a water pumping device which is connected with a spray appliance which comprises a water pump, a water pipe connected with the water pump, and a nozzle arranged on the water pipe. Wells are built at the central isolation belt or the two sides of the expressway. When it snows, underground water is pumped out by the water pumping device, and the water is transferred to the spray appliance which uniformly sprays the water to cover the road surface, so that the snow is melted by using the underground water. The method is capable of melting snow at quick snow melting speed, without closing down the expressway, without damage on the road surface and without harm to plants and crops at the two sides of the expressway. The method is exceedingly environment-friendly and favorable for being popularized and applied.

The invention discloses a solar photoelectric complementary road de-icing and snow melting control system. The system comprises a central processing unit, a solar photovoltaic receiving module, a photoelectric conversion control module, an environmental monitoring module, a power control module and a heating device which is paved below a road surface, wherein the solar photovoltaic receiving module is connected with the power control module through the photoelectric conversion control module; the output end of the power control module is connected with the input end of the heating device; and the central processing unit is respectively connected with other modules through data buses. The system has the advantages of high heat efficiency, energy conservation, low operation cost and the like, can be controlled by a remote computer, automatically controls the work of the system according to practical situations of a road, adopts dual-energy setting of solar photovoltaic power generation and mains supply electrical energy, and can effectively prevent the road from icing and covering snow in a cold season, reduce traffic accidents and improve road safety.

Relating to the technical field of demoulding agent production, the invention discloses a building template demoulding agent for concrete pouring. The building template demoulding agent is prepared from the following raw materials by weight: 40-45 parts of modified silicone oil, 15-20 parts of polypropylene oxide glycol 2000, 8-12 parts of C9 petroleum resin, 6-10 parts of volcanic ash, 5-8 parts of sepiolite powder, 5-8 parts of ethylene-tetrafluoroethylene copolymer, 4-6 parts of toluene diisocynate, 3-5 parts of rapeseed cake, 2-3 parts of oleic acid polyoxyethylene ester, 2-3 parts of nano-alumina, 2-3 parts of glass fiber powder, 1-2 parts of tri-n-butyltin methoxide, 1-2 parts of sulfated castor oil, 10-15 parts of butyl acetate, and 10-15 parts of n-butanol. The demoulding agent provided by the invention can significantly improve the demoulding effect of concrete, prevents concrete from adhering to the template during demouling and protects the template and concrete surface structure. At the same time, the demoulding agent has no corrosion on the template, thus fully extending the service life of the template.

The invention provides a polycrystalline diamond composite sheet and a treatment method thereof. The polycrystalline diamond composite sheet comprises a hard alloy substrate, a polycrystalline diamond layer and protection layers, wherein the polycrystalline diamond layer is compounded on the hard alloy substrate and comprises a layer without residual metal and a layer with the residual metal; the layer with the residual metal is located between the layer without the residual metal and the hard alloy substrate; the thickness of the polycrystalline diamond layer is 1.9mm-2.2mm; the thickness of the layer without the residual metal is 30-50 microns; the protection layers cover the bottom surface and all side faces of the hard alloy substrate, and part of the side face of the polycrystalline diamond layer. Compared with the prior art, the removing depth of the residual metal of the polycrystalline diamond layer of the polycrystalline diamond composite sheet provided by the invention is large and the hard alloy substrate is not corroded, so that the stability of the polycrystalline diamond composite sheet in a utilization process is improved and the service life is prolonged.

The invention relates to a main transformer fire extinguishing system of a maritime booster station. The main transformer fire extinguishing system comprises a rainwater collection device, a main transformer chamber with a main transformer, a fire extinguishing water tank, spraying nozzles and a fire detector which are positioned in the main transformer chamber, a controller electrically connected with the fire detector, wherein the spraying nozzles are positioned right over the main transformer; a water feeding pipeline connected with the rainwater collection device and a water discharging pipeline connected with the spraying nozzles are arranged in the fire extinguishing water tank; a spraying valve is arranged on the water discharging pipeline and is electrically connected with the controller. The fire detector is used for detecting a fire sign in the main transformer chamber and sending collected information to the controller; the controller drives the spraying valve to be opened; rainwater of the rainwater collection device enters the spraying nozzles through the fire extinguishing water tank and is sprayed from the spraying nozzles, so that early extinguishing of the fire can be realized, and a fire accident is prevented; furthermore, the rainwater is fresh water and cannot corrode all the devices, and the service life of the main transformer fire extinguishing system of the maritime booster station is guaranteed.

The invention relates to an anti-blue ray resin composition and a preparation method thereof. The resin composition contains the following components: resin, an ultraviolet absorbent, a free radical capturing agent, an antioxidant and azo pigments. The preparation method comprises uniformly mixing the resin, the ultraviolet absorbent, the free radical capturing agent, the azo pigments, the antioxidant, a solvent and a curing agent in percentage by weight so as to obtain a mixture, coating base materials such as glass, PET, PVC and PP with the mixture, heating, and drying, so as to obtain an anti-blue ray coating layer. The ray resin composition is capable of further absorbing 380nm-425nm high energy waves harmful to human eyes. By forming a film through the coating of the resin composition, the problem that the heat resistance of materials is poor can be avoided. A production process is simple, the materials are wide in sources and cheap, and the process can meet the market demands andblue ray protection requirements of customers. The equipment investment is low, so that the industrial production is easily realized. The prepared film can be applied to the adhesion of each module of a liquid crystal display and can be applied to the production of products of various types of protection films, LED display screens, LED light sources and the like.

The invention relates to cleaning liquid, in particular to environmentally-friendly water-based multifunctional electronic cleaning liquid for the electronic surface mount industry. The cleaning liquid comprises the following components in parts by weight: 35-60 parts of pure water, 1-3 parts of corrosion inhibitor, 3-5 parts of isomerous alcohol ether phosphate, 3-12 parts of alkaline auxiliary agent, 7-12 parts of secondary alkyl sulfonate, 3-8 parts of EO-PO (Ethylene Oxide-Propylene Oxide) copolymer, 10-25 parts of D-limonene and 5-10 parts of nonionic emulsifier. The cleaning liquid is safe to a cleaned object, cannot corrode an electronic circuit board, has excellent compatibility, good compatibility with most rubber and plastics and cannot cause swelling, corrosion, and the like, thus the cleaning liquid can be widely applied to electronic circuit boards and hardware plastic; the cleaning liquid can be used for cleaning residual soldering fluxes or residual tin cream and other dirt on a PCBA (Printed Circuit Board Assembly) at normal temperature or by warming up, and also can be used for cleaning heavy greasy dirt on hardware or plastic parts; and the cleaning liquid is an aqueous concentrated product, has strong cleaning power, can maintain good electrical performance for the PCBA and has no damages to the human body.

The invention discloses a microcapsule wrapping acid used for an oil field, which is prepared from basic acid, a curing filling material, a wrapping material, a surfactant and a solvent; and a preparation method comprises the steps of preparing materials, mixing, heating, fluidifying and wrapping. A macromolecule wrapping material is adopted for the microcapsule wrapping acid, which is carried todeep cracks of a stratum along with an injected liquid in the process of acid fracturing construction, and the situation of release of basic acid cannot occur when the material is in the shaft and just enters the cracks; H<+> can be released after the liquid enters the deep cracks of the stratum, thus breaking through the limitation of reaction conditions of conventional acidic rocks, greatly extending the effective acting distance of the acid liquor, and simplifying the construction flow and reducing the construction requirement; because wrapping treatment is performed on the basic acid, danger cannot be caused, and the wrapping acid can be stored for a long time; corrosion to a tubular column cannot be caused, and an acid fracturing flowback liquid produced subsequently is low in environment pollution damage, residue basically does not exist after acid fracturing, and secondary damage to the reservoir stratum can be avoided.

The invention belongs to the technical field of harmful gas treatment, particularly relates to a large-flow and low-heat-value harmful waste gas incineration disposal process, and aims to develop a novel process for treating high-air-volume and low-heat-value harmful waste gas in a regenerative combustion manner. According to the adopted technical scheme, a ceramic heat accumulating body is taken as a carrier for recovering heat of high-temperature flue gas and pre-heating waste gas, the temperature of the high-temperature flue gas falls rapidly in a heat accumulating chamber, and the heat energy is stored in the heat accumulating body and is released for heating waste gas needing to be treated in a next cylinder. The process has the beneficial effects that the system can treat waste gas containing acid components, and the temperature of flue gas is higher than the dew point temperature of acid in the heat accumulating chamber, thus corrosion to the heat accumulating body is prevented, and the emitted flue gas is up to the natural environmental protection standard; the waste gas preheating temperature can be up to 80 DEG C or higher, thereby saving over 80 percent of fuel; by adopting a rigid-flame incandescent light, stable combustion state of the system is ensured, and effective residence time of the flue gas in a hearth is ensured.

The invention discloses a gearbox lubricating agent composition and a preparation method thereof. The gearbox lubricating agent composition comprises the following components in 100% of the total mass: 20-40% of polyurea-based lubricating grease, 20-50% of base oil, 2-4% of micro-pitting resistant additive, 1-3% of anti-wear reagent at extreme pressure, 1-5% of antioxidant, 10-20% of adhesive and 1-2% of friction modifier. The gearbox lubricating agent disclosed by the invention has excellent lubricating performance and can be used for reducing the temperature of a gearbox and avoiding the damage to a certain degree to a gear due to overhigh temperature; the gearbox lubricating agent composition has excellent low-speed and heavy-duty shear stability; according to the gearbox lubricating agent composition, the replacement period of a gearbox lubricating agent is prolonged, and the production cost is reduced; the pitting on the gear surface of the gear inside the gearbox can be effectively restricted; the gearbox lubricating agent disclosed by the invention has no any corrosion to a sealing member of the gearbox; furthermore, the risk of the lubricating agent leakage in the gearbox is eliminated.

The invention discloses gear grease prepared from petrolatum and relates to the technical field of petrochemical engineering. The gear grease is prepared from, by weight, 40-50 parts of petrolatum, 10-15 parts of linseed oil, 10-15 parts of hydroxyethyl cellulose, 8-13 parts of carbomer resin, 6-10 parts of attapulgite, 6-10 parts of polyoxyethylene lauryl ether, 5-8 parts of cetanol, 5-8 parts of styrene-butadiene rubber, 4-6 parts of gelatin, 3-5 parts of nanosized ceramic powder, 3-5 parts of rust-proof auxiliaries, 1-2 parts of amine oxide, 10-15 parts of propanediol butyl ether and 20-25 parts of residual oil. The gear grease prepared from the petrolatum has the advantages that the gear grease is moderate in viscosity and can quickly form a protecting film layer on the surface after being applied to a gear so as to play a role in lubrication to reduce transmission resistance and improve transmission efficiency; the gear grease is stable in viscosity and high in corrosion resistance and cannot corrode the gear so as to be beneficial to prolongation of service life of the gear.

The nuclear grade composite silicate heat insulating material has excellent heat insulating performance, high operation temperature, high resilience and no corrosion on metal apparatus and pipeline, and is suitable for use in nuclear grade apparatus and pipeline of nuclear reactor. It is elastic fibrous composite material with rich micro closed holes structure, and contains brucite fiber and / or ophiolite asbestos, sepiolite wool, aluminum silicate fiber, fast penetrant, modifying dispersant and water. It has soluble chlorine ion content not more than 100 ppm and total soluble silicate radical and sodium ion content not more than 10000 ppm. The production process of the material includes the steps of: sorting high grade material, treating brucite fiber and / or ophiolite asbestos, pulping and molding.

The invention discloses a method for reducing microbial pollution in indoor air. The method comprises the following steps: atomizing slightly acidic electrolyzed water for 15-120 minutes, and jetting the slightly acidic electrolyzed water into the air at a flow rate of 200-300 mL / h, wherein the effective chlorine concentration of the slightly acidic electrolyzed water is 10-30 mg / L, the pH is 4.5-6.5, and the oxidation reduction potential is 700-900 mV. The method disclosed by the invention can be used for indoor sterilizing with people and effectively reducing microbial pollution in the air without corroding furniture, so that no additional protection measure is carried out on indoor decorations, and in addition, the method can also be used for achieving the function of a traditional air humidifier to perfect the indoor air quality by adjusting the relative humidity of the indoor air; the method disclosed by the invention is convenient, efficient and is conducive to promotion and application.

The invention provides a novel hollow sodium filled valve. The novel hollow sodium filled valve is composed of a plate part, a rod body and a plug, wherein a hollow part which moves along the axial direction is arranged in the rod body; and the hollow part is filled with metal sodium materials of which the melting point is 97.81 DEG C. When the valve works, the temperature increases rapidly, and the metal sodium is converted from solid into liquid; liquid sodium scours the plate part and the rod body of the valve continuously to transfer the heat of the plate part and the neck part of the valve out rapidly, so that radiation performance of the valve is increased, and temperature can be reduced by about 100 DEG C; besides, the specific gravity of the metal sodium is 0.97 g / cm<3>, so that the weight of the valve is reduced, the mass of the valve is lowered, movement physical quantity correlated with the mass of the valve is reduced correspondingly, and the work performance of the valve is better; furthermore, the valve disclosed by the invention is strong in rigidity and hardly bent.

The invention discloses a zinc oxide coated CBN (cubic boron nitride) grinding material resin grinding wheel, which is prepared from the following ingredients in parts by weight: 15 to 20 parts of zinc nitrate, 140 to 200 parts of urea, 0.15 to 0.2 parts of sodium dodecyl sulfate, 90 to 100 parts of phenol, 96 to 110 parts of 35-40-percent formaldehyde solution, 5 to 7 parts of boric acid, 2 to 6 parts of hexamethylenetetramine, 13 to 20 parts of aniline, 10 to 20 parts of barium stearate, 570 to 600 parts of elboron and 3 to 4 parts of polyvinyl alcohol. The zinc oxide protective barrier coating has the advantages that the heat resistance of the boron nitride can be obviously improved; the main reason is that the zinc oxide coating blocks the contact of boron nitride and oxygen gas, and controls the high-temperature oxidization of the boron nitride; meanwhile, the zinc oxide cannot generate the corrosion effect on the boron nitride.

The invention discloses a kitchen waste treatment method. The kitchen waste treatment method comprises the steps of kitchen waste sorting and crushing, microbial fermentation decomposition, oil-water separation, aeration air flotation separation, hydrolysis-anaerobic fermentation, A / O tank treatment, hydrolysis-MBR treatment and disinfection treatment. The effluent quality reaches the discharge or reuse standard, the whole treatment process is carried out at normal temperature, high-temperature drying is not needed, the defects that in the prior art, kitchen waste treatment needs high-temperature treatment, energy consumption is high, and the decrement rate is low are overcome, kitchen waste treatment in the normal-temperature aerobic environment is achieved, energy consumption is low, the decrement rate reaches up to 99%, final products obtained after organic matter decomposition are carbon dioxide and water, no secondary pollutant is generated, environmental pollution is reduced, and the environmental comprehensive treatment capability of kitchen waste treatment is greatly improved.

The invention belongs to the field of fuels and relates to a vehicle high-proportion methanol gasoline and a preparation method thereof. The vehicle high-proportion methanol gasoline comprises the following components in percentage by weight: 85 to 90 percent of methanol, 3 to 4 percent of solvent oil, 5 to 10 percent of No. 90 national standard gasoline and 1 to 2 percent of additive, wherein the additive is prepared by blending sodium hexadecyl sulfonate, calcium hexadecyl sulfonate, liquid naphthenic acid, methylal, nitromethane and C3-C8 monohydric alcohol. The high-proportion methanol gasoline of the invention overcomes the disadvantages of the traditional high-proportion methanol gasoline under the condition of no change of the vehicles; each index completely meets the standard of vehicle methanol gasoline M85 of 'GB / T23799-2009'; and the vehicle high-proportion methanol gasoline can be well applied to vehicles.

The invention aims to provide a manufacturing method of a potassium picrate-red lead silicon series electric ignition charge. The manufacturing method comprises the steps of: weighing, mixing, smearing the ignition charge and the like, so that the ignition charge has better flame sensitivity and lower mechanical strength; and thus, the ignition capacity of the electric ignition charge is high, and the intrinsic safety and reliability during production and use can be effectively improved.

The invention aims at providing a preparation method of non-corrosive metal paint remover, which has the technical scheme that the paint remover comprises the components (by volume ratio): 55 percent of dichloromethane, 18 percent of benzyl alcohol, 10 percent of ethyl acetate, 5 percent of surface active agent Span 80 or 5 percent of surface active linear alkyl benzene sulphonic acid, 2 percent of ethyl acetoacetate and 10 percent of water. The components are added into a container according to the proportion and then are evenly mixed together by a pulp homogenizing machine or an emulsor. The method has the advantages that the composition of the paint remover contains no acid and alkali, thus not corroding substrate; volatile inhibitor can effectively reduce volatilization of all the components of the paint remover, so that the pollution for the environment can be reduced, and the effective service life of the paint remover is prolonged; the paint remover has strong dissolving capacity for the common paint layer and rapid paint removing speed; and the raw materials are easily obtained, the cost is low, the production technique is simple, and the paint remover can be repeatedly used.

The invention discloses an inner wall putty paste and a preparation method thereof. The putty paste is a mixture prepared from the following raw materials by weight: 40-50 parts of heavy calcium carbonate, 20-28 parts of talcum powder, 3.2-5.5 parts of sodium bentonite, 8.5-9.8 parts of a pure acrylic emulsion, 0.2-0.4 part of a defoaming agent, 0.5-0.6 part of a dispersing agent, 0.26-0.4 part of hydroxypropyl methyl cellulose, 0.2-0.35 part of a bactericide, 20-35 parts of water, and 0.25-0.45 part of a mildew inhibitor. The invention also includes a preparation method for the inner wall putty paste. The inner wall putty paste provided by the invention has good water resistance, alkali resistance and thixotropy, is easy to realize batch scraping, is a neutral product and non-corrosive, and has good bactericidal and mildewproof effects.

The invention relates to an environmental-friendly fulvic acid compound snow-melting agent and belongs to the technical field of materials for roads. The environmental-friendly fulvic acid compound snow-melting agent is prepared by the following steps: by taking lignite as a raw material, crushing the lignite and pre-oxidizing and degrading the lignite with hydrogen peroxide; then combining the lignite with glacial acetic acid; under microwave irradiation, further oxidizing and degrading the lignite to extract fulvic acid; generating more functional groups such as carboxylic acid, alcohol, amine and ester capable of reducing the freezing point; then performing purification and performing a reaction with carbide slag and magnesium oxide and the like to generate fulvic acid / calcium acetate magnesium; and finally, compounding with ammonium chloride to prepare the environmental-friendly fulvic acid compound snow-melting agent. The environmental-friendly fulvic acid compound snow-melting agent prepared by the invention is good in snow-melting effect and small in damage to vegetables, meets the environmental-friendly requirements, is rich in nutritional elements needed by plants to facilitate nutrient adsorption of the vegetables, and has a wide application prospect.

The invention discloses a circulation type mold cleaning device. The cleaning device comprises a cleaning device body, rack legs and a transmission device; the transmission device comprises two transmission connection belts and a rotation cylinder, at least two drive motors are arranged on the rack legs, the drive motors are connected with rotation gears, a tooth-shaped groove is formed in the rotation cylinder, clamping parts are arranged on the two sides of the rotation cylinder, the cleaning device body comprises a cleaning groove, a reagent liquid storage box and a cleaning water tank, a partition board is arranged on the central position of the interior of the cleaning groove, the partition board divides the cleaning groove into a mold cleaning chamber and a reagent washing chamber, liquid inlets and liquid outlets are formed in the upper ends and the lower ends of the reagent liquid storage box and the cleaning water tank, the liquid outlets are connected with liquid dividing converters, and multiple liquid conveying pipes are arranged on the liquid dividing converters, and penetrate the upper surfaces of the mold cleaning chamber and the reagent washing chamber to be connected with shower nozzles. Mold cleaning, cleaning agent clearing and mold drying are integrated, the damage of the cleaning agent to the mold is prevented, mold cleaning safety is ensured, and the service life of a mold is prolonged.