216results about How to "Improve water stability" patented technology

The invention provides an ardealite road base material and a preparation method thereof, and belongs to the field of road base materials. The road base material is prepared from the following raw materials in parts by weight: 850 to 900 parts of phosphogypsum, 5 to 15 parts of quick lime, 40 to 60 parts of cement, 55 to 85 parts of composite curing agent and 8.5 to 13 parts of curing exciting agent. The phosphogypsum is modified, so that soluble phosphorus and soluble fluorine in the phosphogypsum are cured; the curing exciting agent is atomized and added into the mixture of the modified phosphogypsum, the cement and the composite curing agent, so that all the components are in full contact, the hydration effect is promoted, and the strength and stability of the base material are improved. The pavement base material provided by the invention consumes a large amount of phosphogypsum, can effectively relieve the problem of accumulation of a large amount of phosphogypsum, reduces environmental pollution, has good mechanical properties, water stability and durability, is applied to highway construction, and has important environmental protection significance and social benefits.

The invention discloses a sewage plant carbon source accurate adding system and a control method thereof, and relates to the technical field of sewage treatment. A sewage plant carbon source accurate adding system comprises a sewage treatment unit, a chemical adding unit and a control unit, the sewage treatment unit comprises a biological tank and a secondary sedimentation tank, an outer backflow pipeline is arranged between the biological tank and the secondary sedimentation tank, the secondary sedimentation tank is communicated with the biological tank through the outer backflow pipeline, and the chemical adding unit is connected with the control unit. Wherein the biological tank comprises an anaerobic tank, an anoxic tank and an aerobic tank; based on the control unit, the theoretical dosage is calculated according to the nitrate nitrogen load needing to be removed by the external carbon source in the anoxic zone, feedforward calculation is performed on the effluent nitrate nitrogen target value of the anoxic zone, feedback calculation is performed according to the deviation between the actual measurement value and the target value of the effluent nitrate nitrogen of the anoxic zone, and the dosage is adjusted by combining feedforward and feedback calculation results. Therefore, accurate dosing of the sewage treatment unit is realized.

The invention belongs to the technical field of soft soil foundation treatment, and discloses a soft soil foundation road reinforcing structure and a construction method thereof.The reinforcing structure comprises a plurality of cement soil mixing piles arranged in a soft soil foundation in an array mode; the multiple core piles are used for being inserted into the cement-soil mixing pile before initial setting of the cement-soil mixing pile, the multiple core piles and the multiple cement-soil mixing piles are arranged in a one-to-one correspondence mode, and each core pile comprises a pipe pile and a reinforcing piece which is filled and fixed in the pipe pile; the geogrid layer is laid on the top of the soft soil foundation and located above the multiple core pile areas, and a plurality of meshes are formed in the geogrid layer; a mattress layer; and a filler. The integrality, water stability and certain strength of the road soft soil foundation can be effectively improved, the bearing capacity and shear strength of the road subgrade are remarkably improved, meanwhile, differential settlement of the road subgrade can be effectively controlled by reinforcing the soft soil layer, and the construction quality is improved.

The invention belongs to the technical field of building materials, and particularly relates to magnesium oxychloride cement mortar containing polyaluminum chloride water purifier waste residues as well as a preparation method and application of the magnesium oxychloride cement mortar. The magnesium oxychloride cement mortar containing the polyaluminum chloride water purifying agent waste residues is prepared from the following components in parts by mass: 45 to 55 parts of magnesium oxychloride cement and gypsum, 100 to 150 parts of the polyaluminum chloride water purifying agent waste residues, 0 to 3.6 parts of citric acid, 0 to 14 parts of styrene-acrylic emulsion, 130 to 170 parts of river sand and 160 to 200 parts of water, the magnesium oxychloride cement is prepared from 480 to 520 parts of magnesium oxide and 190 to 320 parts of magnesium chloride hexahydrate. The magnesium oxychloride cement mortar containing the polyaluminum chloride water purifying agent waste residues can be used as a cement-based pavement patching material, a large amount of polyaluminum chloride water purifying agent waste residues can be consumed, the problem of environmental pollution caused by the waste residues is effectively solved, the water resistance of the magnesium oxychloride cement mortar can be effectively improved, and efficient resource utilization of industrial solid waste is achieved.

The invention discloses a composite metal roof system and a construction method thereof. The construction method comprises the following steps that firstly, a roof truss supporting structure is constructed, wherein the roof truss supporting structure is welded to the top of a main body structure; and secondly, a main purline, a secondary purline, a bottom plate layer, a sound absorption layer, a supporting layer, a vapor barrier layer, a heat preservation layer and a waterproof layer are sequentially constructed on the top of the roof truss supporting structure and located around the daylighting roof structure to be constructed, an inner connecting keel is arranged on the inner side of the heat preservation layer in the annular direction, and an outer connecting keel is arranged on the outer side of the heat preservation layer in the annular direction. And thirdly, skylight keels are constructed. And 4, constructing an inner drainage ditch, an outer drainage ditch and a radial drainage ditch. And 5, constructing a fixed glass window and an openable glass window. And 6, the waterproof layer and the facing layer are sequentially constructed until the construction is finished. The technical problems that a traditional steel truss roof structure is complex in construction process, leakage risks exist, and heat preservation and sound insulation performance is poor are solved.

The invention discloses an anti-rut enhanced epoxy asphalt mixture and a preparation method thereof, belongs to the technical field of asphalt mixture processing, and is used for solving the technical problem that the anti-rut performance, the water stability and the low temperature resistance of an asphalt mixture in the prior art need to be further improved. The modified asphalt is prepared from the following components in parts by weight: 16 to 20 parts of matrix asphalt, 0.8 to 1 part of additive, 4 to 6 parts of reinforced elastomer, 3 to 5 parts of epoxy modified polysiloxane, 4 to 5 parts of modified reinforced fiber and 65 to 75 parts of aggregate, according to the invention, the asphalt mixture composed of the matrix asphalt and the aggregate is reinforced by the reinforced elastomer, the epoxy modified polysiloxane and the modified reinforced fibers, so that the rutting resistance of the epoxy asphalt mixture is effectively improved, and the water stability and low temperature resistance of the epoxy asphalt mixture are also improved.

The invention relates to the technical field of roadbed fillers, and particularly discloses a high-fill roadbed filler based on weathered granite and a preparation method of the high-fill roadbed filler. The invention relates to a high-fill roadbed filler based on weathered granite. The filler comprises the following raw material components in parts by weight: 60-80 parts of granite waste slag, 10-20 parts of a binder and 5-15 parts of a waterproof agent, the waterproof agent comprises the following raw materials: cement, a silane modified filler, a waterproof reinforcing agent and water. A preparation method of a high-fill subgrade filler based on weathered granite comprises the following steps: firstly, crushing granite waste slag to obtain granite particles with the particle size of 30-50mm, then adding a binder, a waterproof agent and other raw materials into the granite particles, uniformly stirring and mixing to obtain a mixture, finally adding water, controlling the water-cement ratio to be 0.4-0.6, and uniformly mixing to obtain the high-fill subgrade filler based on weathered granite. Stirring and dispersing to obtain the high-fill roadbed filler.

The invention discloses a P2 / O3 double-phase composite sodium ion battery positive electrode material and a preparation method and application thereof.The positive electrode material comprises a base body and a coating layer coating the outer layer of the base body, the base body is composed of an O3-phase material, the space group of the O3-phase material is R-3m, the coating layer is composed of a P2-phase layered material, the space group of the P2-phase layered material is P63 / mmc, chemical elements contained in a P2 phase and chemical elements contained in an O3 phase are the same, and the chemical elements contained in the P2 phase and the chemical elements contained in the O3 phase are the same. The element proportions are relatively close. The sodium-ion battery positive electrode material prepared by the method is relatively high in capacity, excellent in recycling performance and relatively good in rate capability, meanwhile, the preparation method is simple, and the comprehensive performance and the application potential of the positive electrode material are improved. The sodium ion secondary battery prepared on the basis of the positive electrode material is relatively high in first-cycle efficiency, excellent in recycling performance, excellent in rate capability and relatively good in safety performance, and can be used for large-scale energy storage equipment of solar power generation, wind power generation, intelligent power grid peak regulation, distributed power stations, backup power supplies or communication base stations.

The invention discloses a method for modifying red clay by straw fiber composite ecological cement and application thereof. The straw fiber composite ecological cement modified red clay is prepared from air-dried red clay, ecological cement, straw fiber and water. The method comprises the following steps: a, obtaining straw fiber, ecological cement and red clay raw materials; b, testing to obtain the optimal moisture content, specific gravity and liquid-plastic limit index of the red clay; c, setting a plurality of orthogonal test proportions; d, matching the proportioned dry materials, adding a proper amount of water, braising the materials for 24 hours, uniformly stirring one part of the materials to prepare a standard cutting ring sample, and uniformly stirring the other part of the materials for a planting test; and e, performing a direct shear test, a penetration test, a fracture analysis test, a soil-water characteristic curve test and a plant growth test on the cutting ring sample after the dry-wet cycle. According to the method, the shear strength, permeability resistance and water stability of the red clay can be improved, deformation and crack development of the red clay are effectively prevented, and the modified red clay obtained through the method can be applied to channel slope construction.

The invention provides a solid waste-emulsified asphalt cold recycled mixture and a preparation method thereof, and belongs to the technical field of road engineering materials. According to the invention, asphalt mixture reclaimed materials (RAP), new aggregates, mineral powder, a cementing material, water and emulsified asphalt are used as raw materials, wherein the cementing material adopts blast furnace slag powder and fly ash to replace part of cement. By improving the mixing process, the cold recycling mixture is mixed more uniformly, so that the asphalt film thickness distribution on the surfaces of different types of aggregates after demulsification of the emulsified asphalt is uniform; the macroscopic pavement performance such as volume parameters, mechanical strength, water stability, high-temperature performance and low-temperature performance of the blast furnace slag powder-fly ash-emulsified asphalt cold recycled mixture sample is effectively improved.

The invention discloses an anti-settlement subgrade layered filling structure and a construction method, the anti-settlement subgrade layered filling structure comprises soft rock filler layers, a silty sand layer is filled every other soft rock filler layer with a fixed thickness, and a composite geomembrane is laid on the silty sand layer; the composite geomembrane sequentially comprises a curing layer and a drainage layer from bottom to top, the curing layer comprises a plurality of reinforcing units distributed in an array mode, each reinforcing unit comprises an upper layer and a lower layer which are filled with urease and cementing liquid respectively, the urease and the cementing liquid are sealed through the geomembrane, a trigger device is arranged in the upper layer, and the drainage layer is arranged in the lower layer. When the roadbed is settled, the trigger device moves downwards along with the roadbed to solidify the settled part; the drainage layer comprises a capillary drainage structure and is used for transversely guiding water out to the side slope. All the structural layers are matched with one another, outside water is prevented from entering a soft rock filling layer, meanwhile, the drainage capacity of the soft rock roadbed is greatly improved, the disintegration and softening effects of rainwater on soft rock are reduced, the service life of the soft rock roadbed is prolonged, the long-term stability of the roadbed is improved, and applicability is high.

The invention relates to the field of preparation of asphalt mixtures for road engineering, and discloses a water-damage-resistant high-performance asphalt mixture doped with fibers and a preparation method of the water-damage-resistant high-performance asphalt mixture. The asphalt mixture provided by the invention is a water-damage-resistant fiber-doped high-performance asphalt mixture, and the asphalt consumption and the void ratio of the asphalt mixture are in the optimal proportion; particularly, the asphalt mixture interacts with aggregate with set gradation, and basalt and polyacrylonitrile fiber are mixed for use, so that the bonding effect between the aggregate and asphalt is better, the overall compactness and water stability of the asphalt mixture are further improved, and meanwhile, other comprehensive pavement performance of the asphalt mixture is also improved; and the asphalt pavement has high-temperature stability, low-temperature bending resistance, durability and anti-skid safety, so that the traffic capacity and the service life of the asphalt pavement are enhanced, and the asphalt pavement can have good pavement performance in different water environments.

The invention relates to the field of harmless treatment and processing application of marine plankton, and provides an enteromorpha-based lignocellulose bioplastic and a preparation method thereof, and the preparation method comprises the following steps: 1) airing and crushing enteromorpha; (2) mixing a product obtained in the step (1) with a NaOH solution, carrying out wall breaking treatment in a high-pressure environment, and then magnetically stirring at 95 DEG C for 2-4 hours; (3) carrying out acid sedimentation on the mixed solution; the method comprises the following steps of 1, preparing lignocellulose, 2, carrying out solid-liquid separation, taking a precipitate, and re-dispersing the precipitate in water to obtain a mixed suspension liquid, 5, carrying out ultrasonic dispersion on the mixed suspension liquid, and uniformly stirring to obtain a lignocellulose film-forming slurry, and 6, degassing the slurry obtained in step 5, spreading the slurry on a substrate, drying the slurry, and uncovering the film to obtain the bioplastics.

The invention belongs to the technical field of saline-alkali soil improvement, particularly relates to a saline-alkali soil improver and a use method thereof, and provides the following scheme aiming at the problems that an existing saline-alkali soil improver cannot remarkably improve the soil structure of saline-alkali soil with the high salinization degree, consequently, the soil water stability is low, and plants are difficult to grow normally. The flue gas desulfurization gypsum comprises the following raw materials in parts by weight: 800-1200 parts of flue gas desulfurization gypsum, 10-60 parts of aluminum sulfate and 20-70 parts of an organic material, through use of the desulfurized gypsum, aluminum sulfate, an organic material, sodium lignin sulfonate, ammonium sulfate, carbamide, acrylic acid, chitosan, a dispersant, a biological agent, a wormcast fermentation broth, wood vinegar, calcium silicate, alginic acid, polysaccharide, hydrogel, plant peptide and polyurethane, the saline-alkali soil structure with a high salinization degree is significantly improved; the soil water stability is effectively improved, and the normal growth of plants is ensured.

The invention discloses an ardealite-based road base material and a preparation method thereof, and the material comprises the following raw materials by mass: 84-92% of ardealite, 4-8% of magnesium oxide, 1-3% of magnesium chloride, 1-2% of mineral powder, 0.5-1% of cement, 0.25-0.5% of gypsum, 0.25-0.5% of sodium bicarbonate, 0.25-0.5% of a polymer nanocomposite and 0.25-0.5% of a modifier. Wherein the modifier comprises ferrous sulfate and graphene oxide; the polymer nano composite material comprises nano silicon dioxide and an acrylic emulsion. Through the combined effect of the polymer nano composite material and the modifier, based on a series of principles of improving the surface performance of phosphogypsum particles, optimizing the form and aggregation position of the five-phase product, forming a composite water-resisting layer and the like, the cementing efficiency of the five-phase product is improved, and the technical problems of low strength and poor water stability of phosphogypsum are fundamentally solved.

The invention relates to water-permeable colored asphalt concrete and a preparation method thereof, and belongs to the technical field of asphalt concrete.The water-permeable colored asphalt concrete is composed of colored modified asphalt and aggregate, and the mass ratio of the colored modified asphalt to the aggregate is (1-2): 10. The colored modified asphalt is composed of road petroleum asphalt, modified calcium carbonate whiskers, modified rubber powder, a composite anti-stripping agent and an inorganic pigment. According to the permeable colored asphalt concrete prepared by the invention, the Marshall stability is 8.39 to 8.91 kN, the compressive strength is 57.9 to 64.5 MPa, the water stability RMS is 97.5 to 98.4 percent, the TSR is 95.2 to 97.0 percent, the porosity is 18.4 to 21.6 percent, and the permeability coefficient is 61 to 70 mm / s.

The invention relates to the technical field of soil improvement and remediation, and discloses application of a composite curing agent, and the composite curing agent is used for improving sulfate saline soil. The invention further provides an application method of the composite curing agent. The application method comprises the following steps: pretreating a soil sample of the sulfate saline soil; before a test, a soil sample is firstly pretreated, the soil sample is firstly air-dried to ensure that moisture in the soil sample is fully volatilized so as to avoid influence on a subsequent test, then the air-dried soil sample is crushed into fine particles, and the fine particles are screened by a 2mm screen so as to ensure that the granularity of the soil sample is uniform and consistent and facilitate subsequent mixing and preparation. The composite curing agent provided by the invention can improve the sulfate salinized soil, and the salinized soil improved by the composite curing agent has the advantages that the salt expansion deformation is reduced, the early strength is high, the water stability is good, the treated solidified soil meets the engineering use standard, the industrial waste is fully utilized, and the like.

The invention relates to the technical field of gypsum, and discloses a slope protection material based on building beta gypsum as well as a preparation method and a construction method thereof, the slope protection material comprises 40-55 parts of building beta gypsum, 8-15 parts of phosphogypsum, 2-5 parts of a curing agent, 10-20 parts of fly ash and 40-60 parts of water; the curing agent comprises calcium hydroxide, potassium carbonate, acrylic resin and calcium carbonate. After the slope protection material provided by the invention is cured, the leachate of the slope protection material reaches the first-grade discharge water standard through a vibroflotation water method. The innovation ensures the environmental protection property of the material in the application process, solves the problem of low water stability of the traditional beta gypsum, increases the water softening coefficient of the building beta gypsum to 0.7, solves the influence on the environment in the treatment process, and meets the requirements of green construction and sustainable development.

The invention discloses a preparation method of a zero-valent iron reduction material with micro-nano size and water stability, and belongs to the field of underground water pollutant degradation materials. The method comprises the following steps: 1) uniformly mixing micron-sized zero-valent iron powder and hexadecyl trimethoxy silane, and carrying out mechanical ball milling; and 2) cleaning the material with a cleaning agent, and drying to obtain the zero-valent iron reduction material with micro-nano size and water stability. According to the preparation method, a mechanical ball milling method and a hexadecyl trimethoxy silane surface modification method are utilized to cooperate, so that micro-nano size and surface hydrophobicity of the zero-valent iron are stabilized, agglomeration and passivation of the zero-valent iron in water are inhibited, and the reduction activity and water stability of the zero-valent iron material are improved; the reducing capacity of the material on pollutants such as halogenated hydrocarbon and heavy metal in water is remarkably improved, the material can be kept stable in water for a long time, the technical problems that the micro-nano zero-valent iron reducing material is prone to inactivation and difficult to store are solved, and waste of material resources can be reduced.

The invention relates to a control method and device for a waterway system of a water purifying and drinking machine, the waterway system of the water purifying and drinking machine, the water purifying and drinking machine, a computer readable storage medium and a computer program product. The waterway system of the water purifying and drinking machine comprises a purifying device, a flow adjusting device and a water outlet device, the water inlet end of the purification device is used for receiving raw water, and the water outlet end of the purification device is communicated with the water outlet device through the flow adjusting device. The control method of the waterway system comprises the steps that in the water production process of the purification device, pressure parameters of the waterway system are obtained; when it is determined that the water pressure of the waterway system is larger than a preset pressure threshold value according to the pressure parameters, whether a water taking stopping instruction is received or not is judged; and if the water taking stopping instruction is not received, the purification device is controlled to continuously produce water. By adopting the method, stable water outlet of the water outlet device can be improved in the water taking process of a user, and then the use stability of the water purifying and drinking machine is improved.

The utility model discloses a sewage treatment system capable of accurately removing phosphorus, and belongs to the technical field of sewage treatment. The system comprises a sand water pretreatment tank, a biological treatment tank, a secondary sedimentation tank, a water-collecting well, a coagulative precipitation tank, an online instrument and a dosing room, a total phosphorus and flow online monitor is mounted at the water-collecting well and transmits a detected total phosphorus value of effluent of the water-collecting well to a controller, and when a critical value is reached, the controller starts a metering diaphragm pump in the dosing room, so that the effluent of the water-collecting well flows out of the dosing room. And adding a corresponding amount of dephosphorization agent. The system is high in automation degree, the sewage treatment system is more stable, the usage amount of chemicals is saved to the maximum extent, chemical adding and phosphorus removal are more reasonable, and the labor and sewage operation cost is also reduced. The system is high in automation degree, the water outlet stability can be improved, and the problem that medicine adding lags is solved to the maximum extent; and the dosage can be controlled, so that the dosage of chemicals is saved to the greatest extent, the chemicals are more reasonably added to remove phosphorus, and the effects of reducing cost and increasing efficiency are realized.

The invention relates to the technical field of preparation of modified asphalt, in particular to SBS modified asphalt and a preparation method thereof. The SBS modified asphalt provided by the invention is prepared from the following raw materials: matrix asphalt, a linear SBS modifier 791H, a star SBS modifier 4306 and an auxiliary agent, the auxiliary agent is selected from one or two of aromatic oil, naphtha, a stabilizer and furfural extract oil. The modified asphalt prepared by the invention has high storage stability and ageing resistance, the high-temperature performance and water stability are remarkably improved, and the overall performance is better than that of linear SBS modified asphalt. According to the high-stability SBS modified asphalt disclosed by the invention, the storage stability problem is solved, various properties and pavement performance of the SBS modified asphalt are integrally improved, and the high-stability SBS modified asphalt is simple and convenient to prepare, short in processing flow, simple in equipment, mild in process condition, rapid in production and low in modification cost.

The invention discloses a soil stabilizer with a pore self-sealing function and a preparation method thereof.The soil stabilizer is prepared from, by weight, 35-45 parts of magnesium oxide, 15-25 parts of magnesium chloride, 4-6 parts of sodium metaaluminate, 4-6 parts of nano silicon dioxide, 3-5 parts of sodium silicate, 1-3 parts of gypsum, 1-3 parts of calcium chloride and 1-2 parts of polyanionic cellulose. 2-3 parts of a self-sealing functional microcapsule; according to the curing agent, sodium metaaluminate, nano silicon dioxide, sodium silicate, gypsum, calcium chloride, polyanionic cellulose and self-sealing functional microcapsules are introduced on the basis of a magnesium oxychloride curing material, so that the water resistance of a magnesium oxychloride-based cementing material is improved.

The invention provides a modified recycled asphalt mixture based on domestic sludge biochar as well as a preparation method and application of the modified recycled asphalt mixture. The preparation method comprises the following steps: S1, taking new asphalt heated to 150-170 DEG C, domestic sludge biochar heated to 180-200 DEG C, coarse aggregate, fine aggregate and mineral powder, RAP heated to 110-130 DEG C, and a pine tar-based regenerant heated to 50-80 DEG C; s2, mixing RAP and a pine tar-based regenerant at the temperature of 180-200 DEG C to obtain a first mixture; s3, jointly mixing the domestic sludge biochar, new asphalt and the first mixture at the temperature of 180-200 DEG C to obtain a second mixture; and S4, jointly mixing the coarse aggregate, the fine aggregate, the mineral powder and the second mixture at 180-200 DEG C to obtain the modified recycled asphalt mixture. According to the invention, the high-performance modified recycled asphalt mixture can be obtained based on the domestic sludge biochar, the pine tar-based regenerant and the RAP.

The invention discloses wear-resistant anti-aging organic silicon modified asphalt for a fog sealing layer and a preparation method of the wear-resistant anti-aging organic silicon modified asphalt, and relates to the technical field of road engineering. The wear-resistant anti-aging organic silicon modified asphalt comprises the following raw materials in parts by weight: 100 parts of petroleum asphalt, 20-25 parts of FCC oil slurry, 40-50 parts of an organic silicon polymer resin composition, 6-12 parts of modified graphene oxide, 3-6 parts of an initiator, 10-15 parts of an organic stabilizer, 4-6 parts of a suspending agent and 1-2 parts of an ultraviolet light absorber, the prepared organic silicon modified asphalt can improve the regeneration reduction and infiltration capacity of a fog sealing layer material, increase the adhesive force and wear resistance of a protective film and prolong the service life of the fog sealing layer material.

The present application relates to the field of cementitious materials, and in particular to a high-strength cementitious material based on slag and a preparation method thereof. The high-strength cementitious material based on slag, in parts by mass, comprises the following raw materials: 50 to 65 parts of blast furnace slag, 15 to 25 parts of Portland cement, 5 to 12 parts of fly ash, 10 to 20 parts of filler, 0.5 to 1 part of water reducer, 1 to 3 parts of reinforcing agent, 5 to 15 parts of resin material, 6 to 12 parts of sodium bentonite, and 20 to 40 parts of water. The cementitious material prepared in the present application not only has excellent material strength, but also can ensure good waterproofness, corrosion resistance, etc., and can effectively alleviate the problem of poor stability of the cementitious material caused by differences in slag composition, thereby effectively expanding the application environment and field of slag-based cementitious materials, and has very excellent application prospects.

The invention discloses a hydrogen bond organic framework material for flue gas desulfurization as well as a preparation method and application thereof, and relates to the technical field of flue gas desulfurization, and activated crystal powder of an organic soft porous framework material is placed in a carbon dioxide atmosphere for standing for 6-12 hours under the condition of-87 DEG C to-20 DEG C. And vacuumizing for 1-2 hours by using a vacuum pump, and removing carbon dioxide molecules to obtain the hydrogen bond organic framework material. The method has the technical effects that the obtained hydrogen bond organic framework material shows specific adsorption on sulfur dioxide, and almost has no adsorption on other components such as carbon dioxide, nitrogen and methane in flue gas. The material has good hydrophobicity and extremely low water adsorption capacity, greatly reduces the influence of water vapor in a real flue gas environment on the adsorption capacity of the material, shows ultrahigh water stability and acid-base stability, and is beneficial to application in the real flue gas environment. And the material has relatively high cycling stability.

The invention provides a preparation method of a UiO-66-NH2-HSO3 / chitosan composite material, which comprises the following steps: simultaneously loading acid-base groups-NH2 / -HSO3 on a Zr-based metal-organic framework material by using a hydrothermal method to prepare a UiO-66-NH2-HSO3 framework material; and compounding the framework material with chitosan to obtain the UiO-66-NH2-HSO3 / chitosan composite material. The UiO-66-NH2-HSO3 / chitosan composite material disclosed by the invention can be used for a proton exchange membrane fuel cell, chitosan and UiO-66-NH2-HSO3 are compounded, so that the membrane material has relatively good water stability and mechanical tensile property, the chitosan has a long-chain structure,-NH2 is spread over the surface of the chitosan, a hydrogen bond network with higher density and more complex is formed in the whole membrane, and the performance of the membrane is improved. The acid-base pair effect is promoted, so that higher proton conduction performance is realized. Compared with other proton conductive materials, the UiO-66 series MOF disclosed by the invention is relatively mature, and the chitosan is relatively low in cost, so that the UiO-66 series MOF has a relatively good industrial utilization value.

The invention relates to the technical field of recycled asphalt, in particular to a high-consumption RAP fine aggregate recycled asphalt mixture and a preparation method thereof.The high-consumption RAP fine aggregate recycled asphalt mixture is prepared from, by weight, 30-50 parts of RAP fine aggregate, 10-30 parts of RAP coarse aggregate, 25-30 parts of new coarse aggregate, 4-5.2 parts of matrix asphalt, 3-5 parts of cold additive recycled rubber cement, 3-5 parts of mineral powder and 0.2-0.26 part of warm mixing agent. When the total doping amount of the RAP is 60%, the proportion of the fine materials in the total RAP is larger than or equal to 50%, the fine materials can be stably doped, the discarding rate and energy consumption of the fine materials are remarkably reduced, and the RAP fine materials can be consumed in a high proportion.

The utility model discloses a water outlet structure of a water pick. The water outlet structure comprises a machine core shell, a first umbrella valve, an elastic diaphragm piece, a water outlet adapter and a driving piece, the top of the machine core shell is fixedly connected with the water outlet adapter, the water outlet adapter is provided with a membrane cavity, a water inlet channel and a water outlet channel, a first partition plate is arranged between the water outlet channel and the membrane cavity, a plurality of water outlet holes penetrate through the first partition plate, the first umbrella valve comprises a first umbrella cover and a first umbrella handle, and the first umbrella cover is located in the water outlet channel and covers the water outlet holes; the first umbrella handle is fixedly connected with the first partition plate, a one-way water inlet valve is arranged between the water inlet channel and the diaphragm cavity, the edge of the elastic diaphragm piece is connected with the inner wall of the diaphragm cavity in a sealed mode, and when the driving piece drives the elastic diaphragm piece, the elastic diaphragm piece can be driven to repeatedly deform to cause pressure in the diaphragm cavity to change. Therefore, the liquid absorbing and spraying process in the diaphragm cavity can be realized. The water outlet valve has the advantages of flexible on-off adjustment, good closing sealing performance, high water outlet efficiency and good water outlet stability.