31results about How to "Strongly corrosive" patented technology

The invention relates to a method for energy storage and power generation by using an underground mine. At present, there is no method for energy storage and power generation with low equipment investment and high energy conversion rate. The present invention includes the steps of energy storage and power generation. In the energy storage step, the reversible pump-turbine is driven by the electric energy of the external power grid when the power grid is rich in the process of smoothing the peak and valley power, and the water in the open cavity is injected into the sealed cavity. , when the reversible water pump turbine stops running, adjust the air pressure in the sealed cavity to the design set value between 1-30 MPa; in the power generation step, the water in the sealed cavity is in the sealed cavity Under the action of air pressure, it is discharged into the open cavity through the upper and lower water pipes, and the discharged water drives the reversible water pump turbine to generate electricity, and the electric energy generated by the reversible water pump turbine is incorporated into the external grid that lacks power. The equipment of the invention has the advantages of low investment, simple operation, high energy conversion rate, and can effectively utilize the peak and valley power and wind power of the power grid.

The invention discloses a plugging permeability-preventing agent, which is prepared from the following raw materials in percentage by weight: 25% of caustic soda, 6% of sodium methyl silicate, 10% of quartz powder, 10% of gypsum and 50% of water. The preparation method of the plugging permeability-preventing agent comprises the following steps: firstly, adding water into the caustic soda for uniformly mixing and stirring, slowly adding the sodium methyl silicate, the quartz powder and the gypsum in the stirring process for uniformly stirring, and filtering waste residues to obtain a finished product. The plugging permeability-preventing agent of the invention is suitable for various concrete buildings such as roofs, oil depots, water towers, water channels, washing rooms and the like, can enable the gaps of cement mortar concrete to be compact, has the effects of preventing water and permeability, and simultaneously can improve the compressive strength and the tensile strength of the cement mortar concrete. Because the plugging permeability-preventing agent is ventilated, layer surfaces can not be expanded, deformed, weathered and peeled off and can be bonded together again to perform the action of plugging.

The invention discloses a supercapacitor battery. The supercapacitor battery is mainly composed of electrodes, an electrolyte, a membrane, end plates, a lead and a packaging material. The main conductive material of the electrodes is silicon carbide. The electrode lead is directly connected with the battery end plates in a welding mode through a multi-strand sterepsinema with the diameter ranging from 1 mm to 4 mm, and the multi-strand sterepsinema is made of metallic titanium fibers or titanium alloy fibers. The NMP ultrahigh viscosity solution of methylamino butyric acid lithium, polysulfide lithium, lithium perchlorate and lithium phosphate serves as the electrolyte. A polyphenylene sulfide thin film serves as the membrane. The end plates are made of metallic titanium or titanium alloy. The packaging material is formed by welding an ultra-thick polyphenylene sulfide injection molding part and a thin film in a laser mode. One electrode, one end plate, the electrolyte, the membrane, the electrolyte, the other end plate and the other electrode are overlapped in sequence or wound into the 88-188 layers of the supercapacitor battery. The supercapacitor battery has the advantages of being high in temperature resistance, low in temperature resistance, corrosion resistant, short in charging time, large in number of circulation times and long in service life, and can be widely applied to places with the very hostile environmental conditions.

The invention discloses a corrosion-resistant casting cobalt alloy for solar thermal power generation molten salt system and a process thereof. The alloy consists of the following components in percentage by weight: 2.0-3.0wt% of Sn, 1.5-1.8wt% of In, 0.4-0.6wt% of Ag, 3.0-3.5wt% of Cr, 4.0-5.0wt% of Al, 0.4-0.6wt% of Mn, 1.0-1.4wt% of Ge, 2.0-3.0wt% of Cu and the balance of cobalt. The material provides a novel materials science scheme for a corrosion-resistant cobalt alloy used under a marine environment, and also provides the cobalt alloy with excellent casting property. The alloy is implemented and industrialized, so that commercial upgrading needs, on the high-end cobalt alloy material, of heat dissipation tubes and heat storage tubes in the solar thermal power generation field in China are greatly promoted.

The invention provides a preparation method of a rubber vulcanization accelerator N-tert-butyl-2-benzothiazole sulfonamide (NS). A specific process as below: adding 30-60ml of ammonia; weighing 33.25g of Dithio-dibenzo thiazole, 0.10-0.25g of a copper ammonia catalyst and a surface active agent under oxygen pressure of 0.2-0.8MPa, and adding into a reaction kettle; slowly injecting 15.36-19.02g of tert-butylamine by a metering pump to generate a target product at a reasonable reaction temperature; and conducting centrifugation, washing and drying to obtain the product NS. The method provided by the invention can effectively reduce the treatment amount of organic wastewater, reduce comprehensive cost, and has advantages of few raw material varieties, high reaction selectivity, high yield and short cycle; and the method is better than a current production method, and can well meet the demand of high-end market.

The invention discloses a jeans frosting apparatus, comprising a polishing device and a spraying device. The polishing device comprises a trouser-shaped soft bag, a control pedal and an electric grinder; the spraying device comprises a spray gun and another trouser-shaped soft bag; the spray gun is connected with potassium permanganate and high-pressure gas. Jeans polishing includes a grinding step and a spraying step; the grinding step includes inflating the trouser-shaped soft bag to expand jeans; primarily grinding the front and back of thighs and shanks of the jeans with the electric grinder, and holding an abrasive paper drum by hand to grind small parts so as to finish grinding; the spraying step includes placing the jeans on the trouser-shaped soft bag of the spraying device, inflating the trouser-shaped soft bag, spraying potassium permanganate to the proper parts of the front and back of the jeans with the spray gun, soaking in a soaking liquid, neutralizing the potassium permanganate, dewatering the soaked jeans, and drying to obtain jeans which are of great layering impression and have naturally changing color.

The invention provides a method for recovering a metal conductor from an enameled wire. The method comprises the steps of: placing an enameled wire in a heat source environment to obtain a heat-treated enameled wire, the enameled wire comprising a metal conductor and a pyrolytically carbonized paint film; and then putting the heat-treated enameled wire into an aqueous solution containing at leastone compound having a sulfonic acid group to separate the pyrolytically carbonized paint film from the metal conductor, wherein the surface of the metal conductor forms a protection film containing acompound with the sulfonic acid group; and finally, taking out the metal conductor from the aqueous solution to complete recovery of the metal conductor.

The present invention provides a combined preparation method of a waterless magnesium chloride and a potassium sulfate and meanwhile produces a hydrochloride. The technic proposal is that a hexahydrated magnesium chloride (MgCl2 question mark 6H2O) is dehydrated to a dihydrated magnesium chloride. A hydrogen chloride dry gas is dried and dehydrated to a waterless magnesium chloride in a fluidized bed. The second step is that after a heat transfer, a dehydrated hydrogen chloride tail gas enters into a drying tower of a concentrated sulfuric acid and an oleum and the tail gas is dehydrated. The dried hydrogen chloride is recycled. After absorbing the water, a dilute sulfuric acid enters into a sulfate production device to absorb a sulfur trioxide again and becomes the concentrated sulfuric acid. The redundant dilute sulfuric acid enters into a Mannheim device to produce a potassium sulfate and the produced hydrogen chloride produces the hydrochloride after being cleansed. The technology producing the waterless magnesium chloride, provided by the present invention, has the advantages of low cost, good quality, high purity quotient, low energy consumption and little environmental pollution.

Disclosed are: an aqueous solution for absorbing and collecting carbon dioxide from a gas containing carbon dioxide, characterized by comprising 50-70 wt% of a secondary amine compound represented by general formula [1] and a surfactant; and a method for absorbing and collecting carbon dioxide using the aqueous solution. (In the formula, R represents a linear or branched alkyl group having 3-5 carbon atoms.)

The invention relates to the technical field of atmospheric pollution treatment in an environmental protection industry and in particular relates to a desulfurization tower. The desulfurization tower comprises a filtering layer assembly, wherein the filtering layer assembly is located between a flue gas inlet and a flue gas outlet of the desulfurization tower; after flue gas firstly passes through the filtering layer assembly, the flue gas is exhausted from the flue gas outlet; the filtering layer assembly comprises a filtering layer; the filtering layer is internally provided with a plurality of flue gas channels through which the flue gas passes. According to the desulfurization tower provided by the invention, the contact efficiency of sulfur dioxide and a desulfurization agent in the flue gas can be greatly improved, so that the removal efficiency of the sulfur dioxide in the flue gas is improved; the desulfurization agent can be a chemical preparation which can be subjected to chemical reaction with the sulfur dioxide so as to remove the sulfur dioxide and can also be a catalyst which is used for catalyzing the sulfur dioxide to be subjected to chemical reaction with other substances so as to remove the sulfur dioxide.

The invention discloses a shake-resistant anti-tilting leakage-proof ventilated liquid packing device and a liquid packing method. The packing device comprises a top cover, a ventilation gasket, an inner cover, a connecting hose, a small buoyancy ball and a device container, wherein the inner cover is provided with a conduit, the top cover is provided with a ventilation hole, the device container is provided with a bottle opening, the ventilation gasket comprises a ventilation film layer and a ventilation gasket groove surface arranged on the ventilation film layer, the ventilation gasket is arranged in the top cover, when liquid is filled in the device container, the small buoyancy ball floats on the liquid surface, and the small buoyancy ball drives a sharp nozzle of a ventilation pipe to be exposed out of the liquid surface. The device and the method have the advantages that the normal transportation of aerogenesis type liquid such as unitary peroxyacetic acid solution can be realized, the aerogenesis type liquid such as unitary peroxyacetic acid solution cannot be leaked out of the device in forward placing, lateral placing, reverse placing or bumpy states, and in addition, the device cannot deform because of gas expansion.

A method for preparing a porous tubular negative electrode carbon material of a sodium ion battery by taking plant hair as a raw material comprises the following steps of removing seeds of a fluff plant, and washing, drying and hermetically preserving the fluff plant; roasting the fluff plant and an ammonium salt for 1-5 hours at 600-1,200 DEG C in an inert gas according to mass ratio of 1:(0.1-0.3); and washing and drying the mixture to obtain the porous tubular negative electrode carbon material of the sodium ion battery. According to the method, the fluff plant is adopted as the raw material, the prepared tubular structured carbon material with multi-stage distribution and pore distribution has an ordered tubular structure, and the tubular structure is beneficial for an electrode to enter in order and beneficial for complete penetration of the electrolyte; and meanwhile, the specific surface is expanded by a curved structure. The preparation process disclosed by the invention is relatively simple and convenient, and the porous carbon material suitable for intercalation / de-intercalation of sodium ions can be obtained by a one-step calcination method.

The invention discloses an oxygen-control type pipeline-corrosion-resistant liquid metal for 40-80 DEG c of an electronic chip and a process thereof. The alloy comprises the following components in percentage, by weight, the alloy composition is 0.2-0.5wt% of Hf, 0.4-1.0wt% of Co, 4.0-8.0wt% of Bi, 2.0-5.0wt% of Zn, 5.0-10.0wt.% of In,1.0-2.0wt.% of Cd, 5.0-8.0wt.% of Pb, and the balance of gallium; wherein the oxide composition for controlling the oxygen activity is pbo: 30.0-40.0wt% of PbO, 2.0-4.0wt% of CuO,10.0-20.0wt% of AgO, 4.0-6.0wt% of CdO, 5.0-8.0wt% of NiO, and the balance of Fe2O3.Through controlling the oxygen activity by adopting an oxygen control module, the stable compact oxidation film can be effectively generated on the surface of the stainless steel pipeline to inhibitcorrosion of the liquid metal to the pipeline material, the method has the characteristics that the process is simple, the implementation cost is low, the heat dissipation is efficient, the service life of the heat dissipation component is prolonged, and the service life of the heat dissipation component is obvious.

The invention discloses a method for determining the content of nickel in a ferro-nickel alloy and a sample preparation process thereof, and belongs to the technical field of analysis and detection. In order to overcome the defects of the prior art, the invention provides a sample preparation process of the method for determining the content of nickel in the ferro-nickel alloy. The method comprises the steps of taking sodium peroxide as a flux, carrying out primary or secondary melting in a crucible at the temperature of 700-850 DEG C so as to guarantee the effect of complete melting of the sample, enabling the flux and the sample to be slowly subjected to a high-temperature metathesis reaction at the same time, and achieving sufficient oxidation of ferro-nickel alloy elements and combination with the flux, so that a melt is not splashed or lost, use of a large quantity of acid reagents is avoided, and the method is more environment-friendly and green; and the method has the advantagesof high efficiency, batch sample melting, no sample loss, satisfactory solving of the difficult melting problem of the ferro-nickel alloy, and accurate detection result.

The invention discloses a titanium material separator for the chemical industry, and specifically belongs to the field of chemical equipment. The titanium material separator comprises a tank body; a material pipe and a liquid inlet pipe are arranged on one side of the tank body; a standby pipe and an oil outlet pipe are arranged on the other side of the tank body; a liquid discharging pipe is arranged at the bottom end of the tank body; an air outlet pipe is arranged at the top end of the tank body; a mist catcher is arranged on the inner wall of the tank body and corresponds to the air outletpipe in position; a partition plate is arranged in the middle of an inner cavity of the tank body; a blocking plate is arranged between the partition plate and the inner wall of the tank body; a communicating pipe is arranged on one side of the blocking plate; separation liquid is arranged at the bottom of the partition plate; and an oil material layer is arranged at the top of the separation liquid. According to the titanium material separator, an anti-corrosion inner layer, the partition plate, and the blocking plate which are in direct contact with a medium are made of a metal titanium material, and a main body layer which is not in direct contact with the medium is cast by adopting 316Ti stainless steel, so that strong corrosion can be resisted, the service life of the separator is guaranteed, and normal use by users is guaranteed.

The invention discloses a powder used for preparing an intermetallic compound-enhanced zinc-corrosion-resistant cobalt-based alloy laser cladding layer on the surface of an iron-based alloy and a preparation process, which belongs to the technical field of surface engineering. The key components of the production line are resistant to high temperature wear and zinc corrosion, and prolong their service life. Provide a new type of protective coating material and preparation process. The alloy powder has good formability, high bonding strength with the iron-based alloy matrix, high cost performance of the laser cladding layer, excellent wear resistance and zinc corrosion resistance, and is suitable for the preparation of laser surface protective coatings for sinking rollers, shaft sleeves and other components And remanufacturing, has good application prospects and economic benefits.

The invention provides a preparation method of a water heater liner detergent. The preparation method comprises the following steps: taking polyquaternium, adding the polyquaternium into water, stirring to dissolve the polyquaternium, then adding dodecyl benzenesulfonic acid, acetic acid, ethyl acetate and alkyl amine oxide therein, performing standing on a mixed solution to precipitate impurities, and finally filtering to remove the impurities. The preparation method of the water heater liner detergent is easy to operate, and the obtained detergent has high solubility for various common impurities in water and can clean up water scales and water rusts accumulated in a water heater liner after long-term use.

The present invention provides a kind of application of nano-carrier MIL-100 (Fe) on the load of chlorinated acetine, which belongs to the technical field of nano-carrier research. The present invention uses hydrothermal method to synthesize nano-mil-100 (Fe), and its As a nano-carrier to transfer epichloride (NC), through the loading experiment, MIL-100(Fe) has a high loading capacity of 33.43wt% on NC, and the loaded NC@MIL-100(Fe) in phosphate buffer (pH=7.4), NC can be gradually released, and 68% is released within 4 days; NC@MIL‑100(Fe) has significantly reduced toxicity to the healthy liver cell line LO2, and higher inhibitory activity to the liver cancer cell line HepG2.

The invention discloses a supercapacitor battery. The supercapacitor battery is mainly composed of electrodes, an electrolyte, a membrane, end plates, a lead and a packaging material. The main conductive material of the electrodes is silicon carbide. The electrode lead is directly connected with the battery end plates in a welding mode through a multi-strand sterepsinema with the diameter ranging from 1 mm to 4 mm, and the multi-strand sterepsinema is made of metallic titanium fibers or titanium alloy fibers. The NMP ultrahigh viscosity solution of methylamino butyric acid lithium, polysulfide lithium, lithium perchlorate and lithium phosphate serves as the electrolyte. A polyphenylene sulfide thin film serves as the membrane. The end plates are made of metallic titanium or titanium alloy. The packaging material is formed by welding an ultra-thick polyphenylene sulfide injection molding part and a thin film in a laser mode. One electrode, one end plate, the electrolyte, the membrane, the electrolyte, the other end plate and the other electrode are overlapped in sequence or wound into the 88-188 layers of the supercapacitor battery. The supercapacitor battery has the advantages of being high in temperature resistance, low in temperature resistance, corrosion resistant, short in charging time, large in number of circulation times and long in service life, and can be widely applied to places with the very hostile environmental conditions.

The invention discloses electronic chip 80-120 degree oxygen control type pipeline corrosion resistance liquid metal and a process thereof. According to the weight percentage, an alloy comprises 0.2%-0.4% of Ag, 0.1%-0.3% of Ni, 4.0%-6.0% of Sb, 8.0%-10.0% of Zn, 15.0%-20.0% of In, 3.0%-5.0% of Bi, 1.0%-3.0% of Pb and the balance gallium; and oxide for controlling the oxygen activity comprises 10.0%-20.0% of PbO, 4.0%-8.0% of SnO2, 1.0%-2.0% of TaO, 5.0%-8.0% of MnO2, 2.0%-4.0% of CoO and the balance Fe2O3. The liquid metal is packaged in the pipeline, an oxygen control module is adopted for controlling the oxygen activity, a stable and dense oxide film can be effectively formed on the surface of the stainless steel pipeline, and the corrosion of the liquid metal to pipeline materials is inhibited. The liquid metal has the advantages that the technology process is simple, the implementation cost is low, the heat dissipation is efficient, and the service life of a heat dissipation component is obviously improved.

The invention discloses a shake-resistant anti-tilting leakage-proof ventilated liquid packing device and a liquid packing method. The packing device comprises a top cover, a ventilation gasket, an inner cover, a connecting hose, a small buoyancy ball and a device container, wherein the inner cover is provided with a conduit, the top cover is provided with a ventilation hole, the device container is provided with a bottle opening, the ventilation gasket comprises a ventilation film layer and a ventilation gasket groove surface arranged on the ventilation film layer, the ventilation gasket is arranged in the top cover, when liquid is filled in the device container, the small buoyancy ball floats on the liquid surface, and the small buoyancy ball drives a sharp nozzle of a ventilation pipe to be exposed out of the liquid surface. The device and the method have the advantages that the normal transportation of aerogenesis type liquid such as unitary peroxyacetic acid solution can be realized, the aerogenesis type liquid such as unitary peroxyacetic acid solution cannot be leaked out of the device in forward placing, lateral placing, reverse placing or bumpy states, and in addition, the device cannot deform because of gas expansion.

The invention discloses a jeans frosting apparatus, comprising a polishing device and a spraying device. The polishing device comprises a trouser-shaped soft bag, a control pedal and an electric grinder; the spraying device comprises a spray gun and another trouser-shaped soft bag; the spray gun is connected with potassium permanganate and high-pressure gas. Jeans polishing includes a grinding step and a spraying step; the grinding step includes inflating the trouser-shaped soft bag to expand jeans; primarily grinding the front and back of thighs and shanks of the jeans with the electric grinder, and holding an abrasive paper drum by hand to grind small parts so as to finish grinding; the spraying step includes placing the jeans on the trouser-shaped soft bag of the spraying device, inflating the trouser-shaped soft bag, spraying potassium permanganate to the proper parts of the front and back of the jeans with the spray gun, soaking in a soaking liquid, neutralizing the potassium permanganate, dewatering the soaked jeans, and drying to obtain jeans which are of great layering impression and have naturally changing color.

A method for preparing a porous tubular negative electrode carbon material of a sodium ion battery by taking plant hair as a raw material comprises the following steps of removing seeds of a fluff plant, and washing, drying and hermetically preserving the fluff plant; roasting the fluff plant and an ammonium salt for 1-5 hours at 600-1,200 DEG C in an inert gas according to mass ratio of 1:(0.1-0.3); and washing and drying the mixture to obtain the porous tubular negative electrode carbon material of the sodium ion battery. According to the method, the fluff plant is adopted as the raw material, the prepared tubular structured carbon material with multi-stage distribution and pore distribution has an ordered tubular structure, and the tubular structure is beneficial for an electrode to enter in order and beneficial for complete penetration of the electrolyte; and meanwhile, the specific surface is expanded by a curved structure. The preparation process disclosed by the invention is relatively simple and convenient, and the porous carbon material suitable for intercalation / de-intercalation of sodium ions can be obtained by a one-step calcination method.

The invention provides a water heater container detergent which comprises the following raw materials in parts by weight: 30-150 parts of dodecylbenzene sulfonic acid, 30-100 parts of acetic acid, 1-60 parts of quaternary ammonium salt, 10-80 parts of ethyl acetate and 20-80 parts of a surfactant. The water heater container detergent provided by the invention has good dissolubility for various impurities in water, and water scale and water rust accumulated in a water heater container in long-term use can be cleaned.

The invention provides a method for preparing rubber vulcanization accelerator N-tert-butyl-2-benzothiazole sulfenamide (NS), the specific process of which is as follows: 30-60ml of ammonia water is put in, under the oxygen pressure of 0.2-0.8MPa , Weigh 33.25g of dithiodibenzothiazole, 0.10-0.25g of cuproammonia catalyst and a very small amount of surfactant into the reaction kettle, slowly inject 15.36-19.02g of tert-butylamine using a metering pump, and generate the target at a reasonable reaction temperature product, after centrifugation, washing, drying and other processes, the desired product NS is obtained. The method of the present invention effectively reduces the amount of organic wastewater to be treated, and the overall cost is reduced. At the same time, the method has the advantages of less raw material varieties, high reaction selectivity, high yield, and short cycle, which is obviously superior to the current production method, and can be extremely Well meet the needs of the high-end market.

The invention provides a method for cleaning incrustation in a water heater inner container. The method for cleaning the incrustation in the water heater inner container comprises the following stepsof adding a water heater inner container cleaning agent into the water heater inner container which is filled with water; then heating the water in the water heater inner container to 60-80 DEG C andmaking the water heater inner container cleaning agent stand for 1-3h; and discharging mixed liquor. The method for cleaning the incrustation in the water heater inner container is easy to operate andcapable of realizing the cleaning of the incrustation in the water heater inner container without the need for dismounting the inner container.

The invention discloses electronic chip 120-180 degree oxygen control type pipeline corrosion resisting type liquid metal and a technology thereof. Alloy consists of the following components in a percent by weight: 4.0-6.0wt% of Sn, 0.2-0.5wt% of Au, 1.0-3.0wt% of Hg, 8.0-10.0wt% of Zn, 20.0-30.0wt% of In, 4.0-5.0wt% of Cd, 2.0-4.0wt% of Pb and the balance of Ga. Oxides for controlling oxygen activity consist of the following components in a percent by weight: 10.0-15.0wt% of PbO, 5.0-10.0wt% of Bi2O3, 2.0-5.0wt% of ZnO, 1.0-3.0wt% of CdO, 5.0-10.0wt% of In2O3 and the balance of Fe2O3. By encapsulating the liquid metal in a pipeline and using an oxygen control module to control oxygen activity, a stable and dense oxide film can be effectively produced on the surface of the stainless steelpipeline to inhibit the corrosion of the liquid metal to the pipeline material. The technology is characterized in simple technical process, low implementing fees, efficient cooling, the prolonging ofthe service life of a cooling component and remarkable effect.

The present invention belongs to the technical field of polymer materials, and specifically relates to a starch-based waterborne polyurethane emulsion and its preparation method and application. The present invention mixes glycerol and polyethylene glycol, stirs and warms to 90-100°C, then adds starch, stirs and warms to 120-140°C, keeps warm and stirs for 1-2h, then adds methanesulfonic acid, stirs for 0.5-1h, cools to room temperature, and obtains starch-based polyols; isophorone diisocyanate, 2,2-dihydroxymethylbutyric acid, and solvent are mixed, stirred and warmed to 60-80°C, then a catalyst is added, stirred and reacted for 2-3h, then starch-based polyols are added, stirred and reacted for 2-3h, cooled to room temperature after the reaction ends, triethylamine is added, stirred and neutralized for 20-40min, then 3-aminopropyltriethoxysilane is added, stirred and reacted for 1-2h, then water is added, high-speed stirring and emulsification is performed for 1-2h, and the solvent is removed by rotary evaporation to obtain. The starch-based waterborne polyurethane emulsion of the present invention has good stability and mechanical properties, and has good degradation ability, safety and environmental protection.

The invention discloses a plugging permeability-preventing agent, which is prepared from the following raw materials in percentage by weight: 25% of caustic soda, 6% of sodium methyl silicate, 10% of quartz powder, 10% of gypsum and 50% of water. The preparation method of the plugging permeability-preventing agent comprises the following steps: firstly, adding water into the caustic soda for uniformly mixing and stirring, slowly adding the sodium methyl silicate, the quartz powder and the gypsum in the stirring process for uniformly stirring, and filtering waste residues to obtain a finished product. The plugging permeability-preventing agent of the invention is suitable for various concrete buildings such as roofs, oil depots, water towers, water channels, washing rooms and the like, canenable the gaps of cement mortar concrete to be compact, has the effects of preventing water and permeability, and simultaneously can improve the compressive strength and the tensile strength of the cement mortar concrete. Because the plugging permeability-preventing agent is ventilated, layer surfaces can not be expanded, deformed, weathered and peeled off and can be bonded together again to perform the action of plugging.