47results about How to "Penetrate fast" patented technology

The invention discloses a polypropylene film suitable for a film lamination method and a preparation method of the polypropylene film. The polypropylene film comprises the following components in parts by weight: 85.6-91.85 parts of polypropylene; 4-7 parts of long-chain branched polypropylene; 4-7 parts of a compatibilizer; 0.05 to 0.1 part of a nucleating agent; and 0.1 to 0.3 part of an antioxidant. Firstly, polypropylene is selected, so that the wettability of a melt to carbon fibers is effectively improved, and the filling defect caused by high viscosity of a traditional material is overcome; and secondly, the compatibilizer is introduced to form firm chemical bonding with the fiber surface, so that the interface bonding strength is greatly enhanced. And finally, by combining a precise extrusion and casting process, the prepared polypropylene film is uniform in thickness, excellent in interface performance and suitable for a film lamination method.

The invention relates to a food processing technology, and discloses a stress relaxation microchannel guided low-fat high-oxidation-stability nut preparation method. The method comprises the following steps: adjusting the content of nut meat in an aqueous solution containing an antioxidant to 8-12% (dry basis), and then carrying out phase change induced stress treatment to form a micro-fracture network communicated with the outer surface in the interior; then increasing the pressure to 3 to 10 MPa at the speed of 1.0 to 2.5 MPa / min, and maintaining the pressure, wherein the hot / trap is 1.5 to 1.8; and rapidly relieving pressure and discharging residual oil at (2.5-3.5) v1, and rapidly shaping by adopting high-energy drying for 2-10 minutes by adopting radio frequency / infrared / microwave vacuum and the like. According to the method, the degreasing efficiency and the size stabilization rate are improved under the low pressure intensity, surface residual oil is reduced, flavoring is promoted, and the storage oxidation stability is improved.

This invention discloses a large-area photo-chargeable aqueous zinc-ion battery, its preparation method, and its application. The method includes the following steps: Two pieces of glass with a transparent conductive layer coated on one side are taken. A positive electrode material is placed on the coated layer of one of the glass pieces. A glass fiber separator and a negative electrode material are sequentially covered on top of the positive electrode material. The other glass piece is then placed on top of the negative electrode material with its coated layer facing down. The positions of the two glass pieces are adjusted so that they are stacked alternately. Pressure is applied to the resulting stacked structure, and three sides are sealed with hot melt adhesive. After the hot melt adhesive has cured, electrolyte is injected into the unsealed side, and then this side is sealed again. The negative electrode of a diode is connected to the glass on the positive electrode side of the battery, and the positive electrode of the diode is connected to the glass on the negative electrode side of the battery, thus obtaining a large-area photo-chargeable aqueous zinc-ion battery. The battery of this invention has the advantages of high light utilization, stable charging, and low loss.

This invention discloses a method for preparing high-entropy ceramic matrix composites using a reactive infiltration process, belonging to the technical field of ceramic matrix composites. The steps are as follows: at least four single-component carbides are ball-milled and mixed with a carbon source, then dispersed in a dispersion liquid to obtain a slurry; continuous fibers are woven into a preform, and an interface layer and a matrix layer are deposited to obtain a semi-dense composite material; the slurry is introduced through vacuum or pressure impregnation; and a high-entropy carbide matrix is ​​generated in situ and densified by reactive infiltration after embedding with a transition metal and its alloy. This invention solves the problems of long process cycles, high porosity, high cost, and insufficient introduction of high-entropy ceramics in existing processes, achieving rapid densification and improving the material's high-temperature stability, oxidation resistance, and ablation resistance. It is suitable for the large-scale production of thermal protection materials for hypersonic vehicles.

The invention discloses a steel ball grinding iron mud draining treatment device, and belongs to the technical field of steel ball grinding, the iron mud draining treatment device comprises a draining box, a ground rail truss vehicle is erected outside the draining box, a plurality of supporting frames are arranged in the draining box at equal intervals, sieve plates are laid on the supporting frames, the draining box is divided into an upper cavity and a lower cavity through the sieve plates, and the upper cavity and the lower cavity are communicated with each other. Wherein the upper cavity is a balling pool, the lower cavity is a filtrate placing pool, a plurality of extrusion cones are uniformly arranged on the sieve plate, flow guide grooves are circumferentially formed in the surfaces of the extrusion cones, and the tips of the extrusion cones are polished into spherical structures. The extrusion cone is arranged on the sieve plate, when a cloth bag containing iron mud is placed on the sieve plate, the extrusion cone abuts against the bottom of the cloth bag to enable the cloth bag to be suspended, the cloth bag is prevented from being tightly attached to the sieve plate, grinding liquid can permeate to the outside of the cloth more quickly, and meanwhile the flow guide grooves in the surface of the extrusion cone utilize the capillary effect and gravity to create a drainage channel; concentrated outflow of water is accelerated, and the draining efficiency is further improved.

The application provides a pore-forming agent for lithium ion batteries and a preparation method thereof, which comprises a wall material preparation step, a core material preparation step, a W / O type initial milk preparation step and a pore-forming agent for lithium ion batteries preparation step. The pore-forming agent preparation method is a new pore-forming agent synthesis route, which has the advantages of simple reaction steps, mild reaction conditions, high yield, low cost and environmental protection. The technology can accurately construct a uniform multi-level pore network by introducing the pore-forming agent into the electrode, significantly reduces the charge transmission impedance, effectively improves the fast charging capacity and high-rate discharge performance of the battery, greatly improves the electrode-electrolyte interface contact, and ensures the full use of the active material. The application also provides an application of the pore-forming agent for lithium ion batteries to lithium ion batteries. The application of the pore-forming agent for lithium ion batteries to the lithium ion batteries can improve ion conduction and improve the rate performance.

The application discloses a pesticide synergist and a preparation method thereof. The pesticide synergist comprises a silanol-initiated polyether shown in formula I, an inositol phosphate-initiated polyether shown in formula II, an alcohol auxiliary agent and water. The silanol-initiated polyether shown in formula I and the inositol phosphate-initiated polyether shown in formula II are synergized, so that the adhesion, spreading, penetration and retention capacity of pesticide droplets on a target surface are significantly enhanced, and the utilization rate of the pesticide is effectively improved. The product has the advantages of low toxicity, environmental friendliness, multi-functional synergism, wide compatibility and the like, the preparation process is simple and stable, and the product is suitable for industrial production.

The utility model relates to the technical field of bricks, and particularly discloses a low-carbon environment-friendly self-cleaning brick which comprises a brick body, a photocatalytic film layer, a biochar layer and a water permeable layer are respectively arranged on the top surface of the brick body, a waterproof layer is arranged on the bottom surface of the brick body, the photocatalytic film layer is made of titanium dioxide, the biochar layer is made of biochar, and the water permeable layer is made of water. According to the low-carbon environment-friendly self-cleaning brick, the photocatalytic film layer, the biochar layer and the water permeable layer are arranged on the top face of the brick body, harmful gas in air can be effectively decomposed, pollutants can be strongly adsorbed, rainwater can be promoted to permeate rapidly, and therefore the low-carbon environment-friendly self-cleaning brick has the advantages of being environmentally friendly, environmentally friendly and capable of being recycled. And the waterproof layer arranged on the bottom surface of the brick body effectively prevents water in the brick body from leaking to the outside of the brick body, so that damages such as corrosion, deformation and the like of a building structure caused by accumulated water erosion are reduced, the durability is improved, and the practicability is high.

This utility model provides a recyclable, biodegradable, and environmentally friendly ink-absorbing needle-punched nonwoven fabric, relating to the field of nonwoven fabric technology. It includes: a nonwoven fabric body; the nonwoven fabric body has a three-layer composite structure, with an upper dense surface layer and a lower dense surface layer, and a middle loose support skeleton. Both the upper and lower dense surface layers are composed of fibers with a diameter of 2 micrometers. A nanofiber cellulose film with a thickness of 8 micrometers is laminated to the surface of the nonwoven fabric body. The nonwoven fabric body has a three-layer composite structure, with upper and lower polylactic acid dense layers (2 micrometers in diameter, each accounting for 20% of the total thickness) controlling ink diffusion and improving strength, and a middle loose support skeleton (6 micrometers in diameter, accounting for 60%, with a porosity of 75%) storing and penetrating ink. The three-dimensional structure is formed by needle punching at 200 needles / cm². The film contains 3% titanium dioxide for UV resistance. Both polylactic acid and nanofiber cellulose are biodegradable materials, suitable for printing, medical, and packaging fields, balancing environmental friendliness, printing performance, and functionality.

The utility model relates to a shiitake mushroom stick pressurizing and water replenishing device, and belongs to the technical field of edible mushroom processing. Comprising a high-strength support, a water supplementing tank of a box body structure is fixedly installed on the top face of the high-strength support, two circular feeding covers are symmetrically hinged to the top of the water supplementing tank, a water outlet pipe is arranged at the bottom of the water supplementing tank, and two pressurizing mechanisms are further erected in front of the high-strength support; the pressurizing mechanism is communicated and connected with the interior of the water supplementing tank, two sets of water adding mechanisms are erected behind the high-strength support, a storage net is further erected in an inner cavity of the water supplementing tank in the horizontal direction, and an ultrasonic oscillator is installed at the bottom of the storage net.

The application provides a medical three-dimensional nanofiber composite sponge as well as a preparation method and application thereof, and relates to the technical field of medical fiber sponges. The medical three-dimensional nanofiber composite sponge is mainly composed of three-dimensional nanofibers prepared by gelatin, polylactic acid and genipin crosslinking, and cuttlebone particles attached to the nanofibers. The medical three-dimensional nanofiber composite sponge has a three-dimensional fluffy sponge structure with high porosity, overcomes the poor permeability of traditional electrostatic spinning two-dimensional membranes, is beneficial to rapid blood permeation and coagulation factor enrichment, and simultaneously combines the active coagulation-promoting ability of calcium ion release and chitin of the cuttlebone particles and the rapid liquid absorption and concentration effect of the gelatin, realizes rapid hemostasis after high-pressure bleeding, and can meet the first-aid requirements of high-risk bleeding scenes such as high-pressure pulsatile bleeding. In addition, the medical three-dimensional nanofiber composite sponge has excellent biological safety and healing-promoting function, and the degradation rate and the wound healing period can be well matched.

The utility model relates to the technical field of spice flushing, disclose a kind of flushing device of spice production, including water tank, the water tank top is provided with flushing tank, the water tank top is provided with vibration subassembly, the water tank outer wall is fixedly connected with fixed frame, the fixed frame outer wall is provided with swing subassembly, the water tank outer wall is fixedly connected with water pump, the water pump output end is fixedly connected with water pipe, the other end of water pipe is fixedly connected with connecting pipe, the connecting pipe outer wall is fixedly connected with spray head, the swing subassembly includes swing lever, the swing lever outer wall is arranged in the fixed frame outer wall, the fixed frame outer wall is fixedly connected with fixed plate, in the utility model, through swing lever drive connecting pipe reciprocating rotation, then through connecting pipe drive spray head swing, avoid the flushing range of traditional fixed spray head to be limited to single angle, prone to form cleaning blind area in equipment inner wall, container corner or raw material gap, cause local impurity residue.

The utility model discloses a waste bamboo wood sterilizing and smashing processing device which comprises a smashing mechanism, a sterilizing mechanism is arranged on one side of the smashing mechanism, a conveying mechanism is arranged between the smashing mechanism and the sterilizing mechanism, the smashing mechanism comprises a supporting table, a smashing bin, a double-roller smashing machine and a discharging port, the smashing bin is fixedly arranged at the upper end of the supporting table, and the discharging port is fixedly arranged at the lower end of the supporting table. And a double-roller crusher is fixedly arranged at the lower end of the crushing bin. According to the utility model, the crushing process is added before the sterilization process, so that bamboo wood can be crushed and then is subjected to steam sterilization and cooking more conveniently, the particle size is greatly reduced after the bamboo wood is crushed, steam can permeate into the bamboo wood more quickly and uniformly, each part is ensured to be in full contact with high-temperature steam, and the quality of the bamboo wood is improved. And internal bacteria, molds and microorganisms are effectively killed. And compared with large bamboo materials, the surface area of crushed particles is increased, steam contact is more sufficient, and the sterilization efficiency is remarkably improved.

The application discloses a high-strength anti-aging rubber sealing ring and a preparation method thereof, and belongs to the technical field of sealing rings. The self-synthesized expanded dispersion filler is used as a reinforcing phase to endow the rubber sealing ring with excellent mechanical properties. The expanded dispersion filler has a core-shell structure, the core layer is expanded graphite, and the shell layer is brush-shaped silicon dioxide. The composite structure can disperse stress by generating relative slip, the brush-shaped silicon dioxide can physically block oxygen and heat, reduces the penetration of oxygen into the rubber interior under high temperature, and delays the oxidation and rupture of rubber molecular chains. When the high-strength anti-aging rubber sealing ring is used in a high-temperature scene, the expanded dispersion filler can expand, the expansion effect can fill the tiny cracks and pores of the rubber matrix caused by thermal expansion and cold shrinkage, and the penetration of oxygen and heat aging factors into the rubber interior is reduced.

The application discloses a kind of battery separators of chitosan aerogel microspheres and CNF composite and preparation method thereof, belong to lithium ion battery technical field.The battery separator includes polyolefin porous base film and the coating layer of at least one side surface of the base film;The coating layer is formed by coating and drying by coating slurry including chitosan aerogel microspheres and CNF;The chitosan aerogel microspheres are porous particles formed after chitosan is crosslinked, freeze-dried and crushed.The application constructs light, multistage pore structure coating layer by chitosan aerogel microspheres and CNF composite, significantly improves the wettability of electrolyte, liquid absorption rate and liquid retention rate of separator under the premise of extremely low weight gain, and has good thermal stability, effectively solves the contradiction that traditional ceramic coating weight and wettability cannot be compatible.

This invention relates to the field of nonwoven fabric technology, and in particular to an antibacterial, anti-backflow, and easily permeable ES fiber hot-air nonwoven fabric. The ES fiber has a core-sheath composite structure, including a sheath layer and a core layer. The sheath layer uses hydrophobic PE as the matrix and, by mass percentage of the hydrophobic PE matrix, includes the following components: 0.5-1% antibacterial agent, 2-3% dispersant, 0.2-0.3% antioxidant, and 1-10% hydrophilic PE masterbatch. The mass ratio of the sheath layer to the core layer is 4-5:5-6. The core layer is made of PET or PP. The advantage of this invention is that by optimizing the sheath-core ratio, the amount of additives, and the process parameters, the ES fiber hot-air nonwoven fabric simultaneously meets the requirements of rapid permeation, anti-backflow, long-lasting antibacterial effect, softness and skin-friendliness, and structural strength. It breaks through the performance bottleneck of traditional sanitary product surface layers, which are characterized by "hydrophilicity leading to easy backflow, hydrophobicity leading to slow permeation, and short-lasting antibacterial effect," and solves the defects of existing materials with single functions.

The invention relates to the technical field of oilfield sewage treatment, and particularly discloses a composite water clarifier for oilfield sewage treatment and a preparation method of the composite water clarifier. The invention relates to a composite water clarifier for oilfield sewage treatment. The composite water clarifier is prepared from the following raw materials: dual modified polyacrylamide, an imidazoline quaternary ammonium salt grafted copolymer, a scale inhibitor, an adsorbent, dodecyl dimethyl betaine, a coagulant aid and deionized water, the double modified polyacrylamide is obtained by performing double modification on polyacrylamide by using 2, 3-epoxypropyl trimethyl ammonium chloride and a hydrophobic monomer; the imidazoline quaternary ammonium salt grafted copolymer is a grafted copolymer of imidazoline quaternary ammonium salt, acrylamide and acrylamide-2-methylpropanesulfonic acid. The composite water clarifier can be used for treating high-salt and high-oil sewage generated in the middle and later periods of oilfield exploitation, has the advantages of being high in salt resistance, thorough in demulsification and good in flocculation effect, can efficiently remove oil and suspended solids, ensures that effluent reaches the standard, and meets the complex sewage treatment requirements of an oilfield.

The invention discloses a method for preparing MXene through fluoride-free alkali etching of an ultrasonic-assisted supercritical fluid technology, and relates to the field of MXene preparation.Fluorine-free green preparation of MXene is achieved through cooperation of supercritical carbon dioxide fluid and a high-frequency power ultrasonic technology and a fluoride-free etching agent. The preparation method comprises the following steps: introducing carbon dioxide to reach a supercritical state, carrying out an etching reaction in the supercritical state by adopting a stirring or fluid circulation mode, applying continuous or discontinuous high-frequency power ultrasonic treatment to the whole reaction system, recovering to normal pressure and normal temperature after the reaction is finished, collecting a product, washing and drying, thereby obtaining the high-purity silicon dioxide. The high-frequency vibration of the ultrasonic waves and the high diffusivity of the supercritical carbon dioxide are utilized to promote the etching agent to remove A-layer elements in the MAX phase, so that the use of a fluorine-containing etching agent is avoided, the environmental pollution is reduced, and the etching efficiency of the MAX phase is also remarkably improved.

This utility model provides a refrigeration device, including a cabinet, a cabinet liner, and a door. The door includes a door shell, a decorative element, and a sealing element. The door shell includes a door panel and door side panels that bend and extend from the side edge of the door panel toward the lower side of the door panel. Multiple door side panels are arranged circumferentially around the door panel. The door panel and the multiple door side panels enclose a foamed space. A notch area is formed between two adjacent door side panels. The sealing element is located inside the notch area and covers the notch area. A snap-fit ​​cavity isolated from the foamed space is recessed on the outer wall of the sealing element. The decorative element is located outside the notch area and covers the notch area. The outer wall of the sealing element is provided with a first sealing wall and a second sealing wall. The first sealing wall is sealed and fitted to the inner wall of the door side panel on one side of the notch area, and the second sealing wall is sealed and fitted to the inner wall of the door side panel on the other side of the notch area. The refrigeration device of this application achieves reduced door cost while having a good sealing effect.

The invention relates to the technical field of biomedical materials, in particular to radio frequency responsive polyion liquid as well as a preparation method and application thereof. The radio frequency responsive polyion liquid comprises a temperature-sensitive block formed by polymerization of N-isopropylacrylamide and a functional block formed by polymerization of a monomer as shown in a formula I; formula I: [cation] X, the cation being selected from the group consisting of 1-vinyl-3-ethylimidazolium, 1-vinyl-3-butylimidazolium, 1-vinyl-3-hexylimidazolium, benzyl ethyl trimethyl ammonium, or methacryloyloxyethyl trimethyl ammonium; x is a halide ion; and in the block copolymer, anions combined with cations in the functional block are combretastatin phosphate ions. Through the innovative design of the block copolymer, temperature sensitivity, radio frequency responsiveness and treatment activity are integrated, and a multifunctional integrated intelligent material platform is successfully constructed.

This invention relates to a degumming composition, its preparation method, and the degumming method thereof. The degumming composition comprises the following components in weight percentages: 84%–93.5% degumming solvent, 3%–5% solvent oil, 0.5%–3% solid wax, 1%–3% organobentonite, and 2%–5% polar activator; wherein the degumming solvent includes one or more of dichloromethane, N-methylpyrrolidone, and ethylene glycol monobutyl ether. This invention combines the degumming solvent, solid wax, solvent oil, organobentonite, and polar activator in a specific ratio, achieving synergistic effects among the components to obtain a degumming composition with slow evaporation and short degumming time.

The utility model discloses an anti-settlement roadbed structure for municipal road engineering, which relates to the technical field of municipal roads and comprises a cushion layer laid at the upper end of a lime gravel rammed earth layer, and a water control pile pipe is arranged in the lime gravel rammed earth layer. According to the device, the contact area between the roadbed and soil in the natural world can be increased by installing the water control pile pipes, a certain anti-sedimentation effect is achieved, the roadbed can be more stable by installing the anti-sedimentation connecting rods, stress among all parts of the roadbed is more uniform, roadbed sedimentation is avoided, and the service life of the roadbed is effectively prolonged; the natural water seepage holes are formed, so that rainwater can quickly penetrate through the roadbed and permeate soil in the nature below the roadbed, and the drainage capacity of the roadbed is improved.

The application discloses a kind of crosslinking degree of crosslinked polyethylene testing methods, it is related to the technical field of material detection.A kind of crosslinking degree of crosslinked polyethylene testing methods, comprising the following steps: (1) the screen mesh is wrapped PE-X sample is placed into extraction instrument, solvent is injected to extract, extraction atmosphere is nitrogen atmosphere, extraction temperature is 150-200 DEG C, extraction pressure is 10-15MPa, extraction time is 3-10min;After extraction, remove solvent, this is one extraction;(2) repeat one extraction multiple times after PE-X sample is extracted completely and is extracted with solvent with uncrosslinked portion, and nitrogen is used to the remaining sample is purged;Remaining sample is taken out and dried, and the crosslinking degree of crosslinked polyethylene is calculated.The testing method disclosed in the application has the advantages of easy operation, short testing time, accurate testing result and the like, effectively solves the problem that the result of PE-X crosslinking degree is obtained for a long time in actual production, realizes the timely monitoring of product quality in production process.

This utility model relates to a drying device with a ventilation structure. The upper and lower support plates of its support frame are densely covered with ventilation holes, breaking through the airflow obstruction of traditional solid support plates. This allows hot air to circulate without dead zones within the drying chamber, directly acting on the upper and lower surfaces and internal gaps of the copper-clad laminate roll material. This ensures uniform heating of the roll material and avoids localized over-curing or incomplete drying. The ventilation holes also accelerate heat exchange between the hot air and the roll material, allowing the hot air to penetrate the roll material more quickly, shortening drying time, improving production efficiency, reducing ineffective equipment operation, lowering energy consumption, and helping enterprises control costs and enhance competitiveness. The upper support plate can move up and down and is fixed by locking components. Operators can adjust the support plate spacing according to the height of the roll material: increasing the spacing for taller rolls ensures ventilation, while decreasing the spacing for shorter rolls improves space utilization, optimizing the drying capacity per batch. This adjustable structure significantly improves the equipment's versatility, adapting to different specifications of roll materials, meeting diverse production needs, and reducing equipment replacement or modification costs.

The invention provides a polyanionic precursor and a preparation method thereof, a sodium ion battery positive electrode material and a sodium ion battery. The polyanionic precursor comprises a sodium element, an iron element and a phosphorus element; wherein the total amount of substance of the iron element is NFe, the total amount of substance of the phosphorus element is NP, and the ratio of the total amount of substance of the iron element NFe to the total amount of substance of the phosphorus element NP is larger than or equal to 0.8 and smaller than or equal to 0.9. The polyanionic precursor disclosed by the invention has a relatively high iron-phosphorus ratio, is beneficial to exerting the battery capacity, and meanwhile, improves the rate capability of the battery, so that the battery can still keep stable electrochemical performance in a high-rate charge-discharge scene.

The invention relates to a water-swelling sealing ring, and belongs to the technical field of pipeline sealing materials. In order to solve the problems that an existing sealing ring is poor in lubricity and not easy to install, the water-swelling sealing ring comprises an outer ring and an inner ring, the inner ring is compounded on the inner side of the outer ring in the circumferential direction, the outer ring is made of ethylene propylene diene monomer, the inner ring is made of water-swelling rubber, the water-swelling rubber contains a self-lubricating compound material, and the self-lubricating compound material contains a lubricating agent. The water-swellable rubber comprises the following components in parts by weight: 40-60 parts of nitrile rubber; 15 to 20 parts of sodium polyacrylate; 8 to 12 parts of carbon black; 4-7 parts of an activating agent; 7 to 12 parts of a self-lubricating compound material; the mass ratio of the polypropylene glycol to the titanium-based MOF type layered silicate nanosheet particles to the modified graphite to the octadecanamide in the self-lubricating compound material is (3-5): (2-3): (2-3): (0.5-1). The sealing ring can play a role in reducing resistance, and has the effects of lubrication and convenient installation in the installation process.

This utility model relates to the field of slope protection board technology, and more particularly to a waterproof slope protection board for preventing soil erosion. The technical solution includes a board body, a locking block fixedly disposed on one side of the board body, a limiting insertion hole on one side of the locking block, and a locking groove on the side of the board body away from the locking block; an insertion block disposed on one side of the board body, and a slot on the side of the board body away from the insertion block; a guide groove inside the board body, and a sliding groove on one side of the board body, the sliding groove communicating with the guide groove, and a connecting component for interlocking is disposed inside the guide groove. This utility model enhances the vertical connection constraint, effectively preventing the slope protection board from misaligning or separating vertically when the slope is eroded by rainwater or subjected to gravity, improving the integrity and stability of the slope protection structure, reducing direct erosion of the soil by rainwater, and preventing soil particle loss, thereby effectively curbing soil erosion and protecting the slope ecology.

This invention relates to the field of membrane separation technology, and discloses a method for preparing a reduced graphene oxide separation membrane intercalated with heteropolyacid molecular clusters and its application. The membrane comprises a substrate and a functional layer deposited on the substrate, wherein the functional layer is a reduced graphene oxide layer intercalated with heteropolyacid molecular clusters. A graphene oxide solution, a heteropolyacid solution, and isopropanol are mixed; the mixed solution is deposited on the surface of the substrate to form a film; the heteropolyacid-graphene oxide film is subjected to in-situ photoreduction to obtain a reduced graphene oxide composite membrane. This invention is the first to use heteropolyacid molecular clusters as intercalating agents. These clusters are uniform in size, structurally stable, and readily soluble in water. After being combined with graphene oxide, they can form uniform and ordered two-dimensional channels, which is crucial for the selective separation of the composite membrane. This invention effectively avoids the problems of poor mass transfer, poor separation, and easy swelling caused by particulate matter filling into two-dimensional materials.

The invention discloses a fruit and vegetable pesticide residue detection automation system, and relates to the technical field of pesticide residue detection.The fruit and vegetable pesticide residue detection automation system comprises a mounting floor, a supporting middle frame is mounted at the top end of the mounting floor, a mounting bottom box is connected to the top end of the supporting middle frame, and a center mounting pipe is connected to the top surface of the mounting bottom box; the inner side of the central mounting pipe is connected with a limiting bottom plate, the bottom of the limiting bottom plate is connected with a pneumatic pump, the driving fluted disc and the rotating gear ring are matched to drive the distribution test tubes to change positions, a solution in the central distribution pipe is rapidly subpackaged into the distribution test tubes, and then the solution subpackaging convenience is effectively improved; through mutual cooperation of the components in the detection system, in the fruit and vegetable sample detection process, a sample solution can be automatically prepared and subpackaged only by cutting the sample and placing the sample into the central preparation pipe, so that the use convenience and the detection efficiency of the detection system are effectively improved.

A forestry seedling cultivation device comprises a cultivation plate, a rotating cylinder, a gear ring, a gear, a cultivation cylinder, a partition plate, a fastening retaining ring and a fixing seat, a slope water guide groove is formed in the fixing seat, discharge pipes are arranged on the two sides of the fixing seat and connected with nuts through threads, a bottom plate is arranged on the lower portion of the fixing seat, and a bearing plate is arranged on the upper portion of the fixing seat and connected with the cultivation plate. The lower portion of the cultivation plate is provided with a fastening support sleeve, the inner side of the fastening support sleeve is connected with a toothed ring, the outer side of the fastening support sleeve is connected with a fastening retaining ring, the fastening retaining ring is provided with a fastening clamping plate, the fastening support sleeve is provided with a clamping plate penetrating hole, the toothed ring is provided with a fastening clamping groove, the fastening clamping groove and the clamping plate penetrating hole are matched with the fastening clamping plate, the fastening clamping plate penetrates through the clamping plate penetrating hole, and the fastening clamping plate is connected with the fastening clamping groove. A rotating plate is arranged on the lower portion of the gear ring, a rotating wheel is arranged outside the rotating plate, and a gear is attached to the upper side of the rotating plate.