67results about How to "Avoid osmosis" patented technology

The invention discloses a planting method for promoting growth of eucalyptus root systems and effectively improving typhoon resistance. The planting method comprises the following steps: (1) selecting a forest land; (2) forest land cleaning; (3) planting density; (4) digging planting pits; (5) applying a bottom-layer bag-controlled slow-release fertilizer; (6) applying a base fertilizer; (7) field planting; (8) applying a shallow-layer bag-controlled slow-release fertilizer; (9) complementary planting; and (10) topdressing. According to the technology, bag-controlled slow-release fertilizers with different slow-release time are applied in different places, nutrients are continuously supplied to plants under deep root systems and around shallow root systems within a certain time range, volatilization, leaching loss and permeation of nitrogen fertilizers, fixation of phosphate fertilizers and migration loss of potash fertilizers can be reduced to the maximum extent, and the utilization rate of the fertilizers is increased. Meanwhile, through the fertilizer taxis of the eucalyptus root systems, extending growth of deep root systems and shallow root systems is guided, the grabbing and attaching force of the eucalyptus is improved, and therefore the typhoon resistance of the eucalyptus is effectively improved.

The invention provides a high-nickel positive electrode material and a preparation method and application thereof. The high-nickel positive electrode material can effectively control the overall Co content of the secondary particles so as to avoid the situation that the overall Co content of the secondary particles is too high, consequently, the gram volume of a lithium ion battery is reduced, and then the energy density is affected, permeation and diffusion of an electrolyte can be effectively inhibited, corrosion of the electrolyte to the interior of the high-nickel positive electrode material is resisted, and the service life of the high-nickel positive electrode material is prolonged. And the electrolyte is prevented from reacting with active substances in the high-nickel positive electrode material, so that the structural stability of the high-nickel positive electrode material is improved, and the cycle performance of the lithium ion battery is finally improved.

The invention relates to the technical field of surface corrosion prevention, and discloses a high-strength corrosion-resistant steel bar surface epoxy coating and a preparation method thereof. The high-strength corrosion-resistant steel bar surface epoxy coating comprises the following components in parts by weight: 1-5 parts of modified polyaniline / TiO2 powder, 8-10 parts of aluminum triphosphate, 8-10 parts of zinc phosphate, 8-10 parts of talcum powder, 10-15 parts of barium sulfate, 100-200 parts of modified epoxy resin, 50-100 parts of a curing agent, 10-20 parts of an accelerant and 1-3 parts of a flatting agent. The modified polyaniline / TiO2 high-strength corrosion-resistant epoxy coating provided by the invention has the advantages of self-cleaning, scratch resistance, corrosion resistance, wear resistance and the like, and polyaniline has excellent host capability of capturing nano particles and can be co-doped with some active inorganic nano particles to effectively improve the solubility and corrosion resistance of the nano particles. And the modified epoxy resin has the characteristic of high temperature resistance, so that more comprehensive protection is further provided for the reinforcing steel bar. The method is low in cost and environment-friendly, and has good social and economic benefits.

The invention discloses an environment-friendly gravel and stone slope anchor grouting device for reducing grouting back, comprising: a self-advancing anchor, a mounting ring and a pressure detector, wherein a hollow connecting pipe is fixedly mounted on the outer end of the self-advancing anchor, an elastic sealing member is slidably mounted on the outer end of the hollow connecting pipe, an outer wall of the elastic sealing member is fitted with a limiting plate, and an adjusting member is integrally mounted on the outer end of the limiting plate; the mounting ring is fixedly mounted on the outer end of the hollow connecting pipe, a clamping groove is provided on the inner end of the mounting ring, and the environment-friendly gravel and stone slope anchor grouting device for reducing grouting back can prevent slurry from overflowing when the predetermined position is not reached, thereby effectively preventing slurry from grouting back from the gap between the self-advancing anchor and the hole wall, facilitating the collection of the outflowing slurry, avoiding waste of materials, not causing pollution to the construction environment, facilitating subsequent cleaning, and reasonably adjusting the grouting pressure through a regulating valve to avoid excessive penetration and grouting of the slurry due to excessive pressure.

The present application relates to the technical field of castables, and specifically discloses a high-performance hawk beak castable and a preparation method thereof. A high-performance hawk beak castable, using a first aggregate and fused white corundum as aggregates, composite coated graphite powder, silicon nitride, α-alumina micropowder, silicon dioxide micropowder and barium sulfate as powders, calcium aluminate cement as a binder, sodium hexametaphosphate and sodium tripolyphosphate as composite dispersants, tri(2-hydroxypropionic acid) aluminum salt and an active agent as adjuvants, and is cast, heat-insulated, and fired in two stages. The high-performance hawk beak castable prepared in this application has the characteristics of high flexural strength and compressive strength, small permanent linear change rate, expansion resistance, good thermal shock stability, good burst resistance, and metal corrosion resistance.

The invention belongs to the field of lithium ion battery packaging materials, and particularly provides a metal composite film which comprises a middle metal layer, an inner bonding layer and a hot melting resin layer, and the inner bonding layer comprises a main agent which comprises one or more of organic fluorine resin and acid modified polypropylene; the curing agent comprises one or more of an epoxy curing agent and an isocyanate curing agent; the curing agent comprises one or more of a main agent, a curing agent and a catalyst, the catalyst comprises one or more of a special amine catalyst, an amidine nitrogen-containing organic matter, imidazole type epoxy resin compound caprylic acid salt and an organic tin catalyst, the material selection of the main agent, the curing agent and the catalyst in the inner bonding layer is limited, and an addition reaction is generated among the main agent, the curing agent and the catalyst; therefore, the bonding strength of cross-linking and curing is enhanced, and the layering phenomenon of the metal composite film is prevented.

The utility model belongs to the field of air conditioner outdoor units, particularly relates to a shock absorption and noise reduction structure of an air conditioner outdoor unit, and aims to solve the problems that an existing air conditioner outdoor unit cannot effectively reduce vibration and noise generated when the air conditioner outdoor unit works, so that rest and work of people are affected, and a building structure is affected. The air conditioner comprises an air conditioner outdoor unit, the air conditioner outdoor unit is covered with a protective sleeve, honeycomb gradient cotton is fixedly arranged on the inner walls of the periphery of the protective sleeve, and two mounting frames are symmetrically and fixedly arranged at the bottom of the air conditioner outdoor unit; and the damping assembly is arranged on the mounting frame and used for conducting buffering and damping on the air conditioner outdoor unit. Through the arrangement of the damping assembly and the gradient cotton, vibration and noise generated when the air conditioner outdoor unit works can be effectively reduced, the comfort degree and the satisfaction degree of residents can be improved, the building structure can be protected, the service life of the air conditioner outdoor unit can be prolonged, and the influence on the environment is reduced.

The invention discloses a waterproof barrier adhesive tape in an aircraft cabin and a preparation method thereof, and relates to the technical field of adhesives. When the waterproof barrier adhesive tape in the aircraft cabin is prepared, graphene oxide sequentially reacts with 2, 5-dimethyl-2, 5-hexanediol and 5-amino-4-imidazole formamide, and modified graphene oxide is prepared; the pre-modified polysiloxane is subjected to a reaction with dimethyl phosphorus and 1, 2-epoxy chlorobutane in sequence, and functional polysiloxane is prepared; the preparation method comprises the following steps: reacting polycarbonate diol, polyethylene glycol, hydroxyethyl methylacrylate, isophorone diisocyanate, 4, 5-bis (hydroxymethyl)-2-phenyl-1H-imidazole and bis (hydroxymethyl) phenylphosphine to prepare polyurethane particles, and carrying out extrusion casting to form a film; mixing a polyacrylate emulsion, functionalized polysiloxane and modified graphene oxide, coating a polyurethane film with the mixture, and drying to obtain the waterproof barrier adhesive tape in the aircraft cabin. The prepared waterproof barrier adhesive tape in the aircraft cabin has a good bonding effect and a good flame retardant effect.

The invention relates to the field of food preservation, in particular to a food-grade plastic product for sealed preservation and a preparation method of the food-grade plastic product, and aims at solving the problem that a traditional food-grade plastic product for sealed preservation is poor in antibacterial property. According to the preparation method, quaternary ammonium modified graphite-shaped carbon nitride is added into linear low-density polyethylene resin to prepare the food-grade plastic product for sealing and fresh keeping, so that the food-grade plastic product for sealing and fresh keeping is endowed with excellent antibacterial and bacteriostatic performance, bacteria breeding is avoided, and after food is sealed and fresh keeping, the quality of the food is improved. Due to the excellent sealing performance of the food-grade plastic product for sealing and fresh keeping, loss and permeation of moisture, oxygen and peculiar smell substances in the food are effectively prevented, the freshness and quality of the food are better kept, and under the condition of high antibacterial and bacteriostatic performance, the food sanitation and safety are further guaranteed, the food quality guarantee period is prolonged, and the product quality is improved. And the freshness and the taste of the food can be better maintained.

The invention relates to a high-antibacterial absorbable medical suture and a preparation method thereof, and belongs to the technical field of medical materials. According to the suture line, PPDO serves as a base material, PLGA is introduced to wrap TCS through a melt blending and spinning technology, and a TCS-coated PLGA core-shell structure antibacterial agent is prepared. A gradient degradation release system is constructed by utilizing the characteristic that PLGA is faster in degradation than PPDO, so that TCS is slowly and continuously released, and the defects of explosive release and insufficient later concentration of drugs in a traditional direct blending method are overcome. Meanwhile, the core-shell structure effectively avoids destructive pores formed in a PPDO matrix due to rapid dissolution of drugs, and greatly maintains the mechanical integrity of the matrix, so that the suture line can provide stable supporting force similar to that of a pure PPDO line in a key healing period in vivo, and the synergism and unification of long-acting antibacterial property, lasting mechanical supporting property and high operation reliability are realized.

The present application relates to the field of packaging adhesives, and in particular to an electronic packaging adhesive and a preparation method thereof. The electronic packaging adhesive, in parts by mass, comprises the following raw materials: 60-90 parts of a complex polyol, 20-40 parts of an isocyanate, 10-20 parts of a modified resin, 5-8 parts of a plasticizer, 1-2 parts of a chain extender, 0.3-1.2 parts of a catalyst, 1-3 parts of an antioxidant, 2-4 parts of a leveling agent, and 0.5-1.2 parts of a defoaming agent. The polyurethane electronic packaging adhesive prepared in the present application can maintain excellent mechanical properties while maintaining good waterproof and moisture resistance, high temperature stability, aging and corrosion resistance, and other properties, thereby meeting the diverse performance requirements of existing electronic components for polyurethane packaging adhesives, and has a very excellent market application prospect.

The invention provides an intelligent flushing device for ophthalmology nursing. The intelligent flushing device structurally comprises a bottom plate, a supporting column, a carrying plate, a liquid box and a flusher. After the flusher is further improved, the convex block and other parts can be effectively driven to move left and right on the carrying plate by adjusting the connecting plate, so that the spacing effect of the two groups of flushers can be changed, and the situation that the two groups of flushers cannot be matched due to inconsistent spacing of eyes of people is avoided; meanwhile, a massager and a cleaning end in a convex block can massage the peripheries of the eyes during cleaning, so that the intelligent effect of the flushing device can be improved, the cleaning end can be combined with an atomizing nozzle to atomize cleaning liquid, and then the cleaning liquid is sprayed out through an auxiliary pipe to clean the eyes; in the process, the attaching device on the auxiliary pipe can attach and cover the peripheries of the eyes, the situation that the cheeks are wetted due to edge permeation generated when cleaning liquid is used for flushing is avoided, and the use intensity effect of the flushing device can be further improved.

The invention discloses a curing agent, a preparation method thereof and an anti-corrosion coating, and relates to the technical field of anti-corrosion coatings. The curing agent comprises an epoxy curing agent, graphene, a naphthalene dispersing agent and a solvent, and the naphthalene dispersing agent comprises dinonyl naphthalene ammonium sulfonate. A benzene ring structure of the naphthalene dispersant can be combined with pi-pi electrons of graphene, contact between graphene sheet layers is hindered, graphene agglomeration caused by long-time storage or high temperature is effectively prevented, and ammonium dinonyl naphthalene sulfonate can react with epoxy resin to promote curing of the epoxy resin; the lamellar structure of the graphene can effectively inhibit corrosion of a corrosive medium and improve the physical barrier property of the coating, and meanwhile, the graphene can prolong the permeation and diffusion path of the corrosive medium, so that the permeation resistance of the coating is improved, and the service life of the coating is prolonged; the epoxy curing agent can chemically react with epoxy resin of the anticorrosive paint, so that the epoxy resin forms a net-shaped three-dimensional polymer, the adhesive force of the anticorrosive paint is improved, and the wear resistance and hardness of a prepared coating are improved.

The invention relates to the technical field of polymer materials, and discloses a dustproof and sweatproof functional material for a Bluetooth headset shell and a preparation method thereof. The functional material consists of polypropylene, maleic anhydride grafted polypropylene, a composite modifier, an inorganic modified additive, an antioxidant, a lubricant, and a colorant; wherein the composite modifier contains a large amount of C-F bonds and siloxane bonds in its structure, so that the prepared functional material has extremely low surface energy, and can effectively improve the sweatproof performance of the Bluetooth headset shell; the inorganic modified additive is prepared by grafting polyisobutylene succinimide onto the surface of carbon fiber, and can interact with a matrix to improve the antistatic performance and mechanical properties of the material, and the improvement of these properties not only improves the protective performance of the Bluetooth headset, but also brings a better use experience to users.

The utility model relates to the technical field of angle aluminum, and provides an angle aluminum sealing connection structure which comprises a first composite board and a second composite board. According to the utility model, the sealing structure is arranged, the lining layer is arranged, and the lining layer is made of silicone acid glue, so that the composite board has the characteristics of strong bonding force, high tensile strength, weather resistance, vibration resistance, moisture resistance, odor resistance and large cold and hot change adaptability, the first composite board and the second composite board are connected more closely, the sealing and buffering effects are achieved, and the service life of the composite board is prolonged. The connection strength of the first composite board and the second composite board is enhanced, the sealing layer is arranged, the sealing layer is made of sealing paste, the sealing layer has sealing performance and certain cohesiveness, a good adhesion effect can be achieved, a gap between the first composite board and the second composite board is filled, water permeation and leakage can be effectively prevented, and the service life of the composite board is prolonged. And by arranging the foam strips, looseness of the aluminum rivets caused by mutual extrusion between the first composite board and the second composite board can be avoided.

The invention relates to the technical field of saggers, in particular to a sagger for solid-phase sintering of a high-nickel NCA ternary lithium battery positive electrode and a preparation method of the sagger. The preparation method comprises the following steps: S1, mixing and grinding bauxite fine powder, active Al2O3 micro powder, pyrophyllite fine powder, Si powder and boric acid to obtain mixed powder; s2, adding silica sol and stirring to obtain slurry; s3, performing spray granulation on the slurry to obtain a microsphere material; s4, performing high-temperature heat preservation on the microsphere material in a nitrogen atmosphere, cooling and sieving to obtain a sintered microsphere material; s5, magnesium aluminate spinel particles, mullite fine powder, the sintered microsphere material, talc fine powder and cerium oxide fine powder are mixed and subjected to ball milling, and a mixture is obtained; s6, adding paper pulp waste liquid, mixing, sealing and ageing to obtain an aged material; and S7, after compression molding and drying, high-temperature heat preservation is conducted, and the saggar is obtained after cooling. And the prepared sagger is good in integrity, high in yield, excellent in sintering performance, high in thermal shock resistance and high in resistance to corrosion and permeability of a high-nickel NCA ternary lithium battery positive electrode material.

The invention belongs to the technical field of fuel cell proton exchange membranes, and discloses a cross-linking type polybenzimidazole proton exchange membrane with oxidation resistance and high proton conductivity and a preparation method of the cross-linking type polybenzimidazole proton exchange membrane. According to the cross-linking type polybenzimidazole, after polymerization of raw material monomers is completed, a silane coupling agent is added as a cross-linking agent, and polybenzimidazole containing the cross-linking agent is obtained through reaction. The polybenzimidazole containing the cross-linking agent can be prepared into a cross-linking type polybenzimidazole proton exchange membrane by using a solution casting method. According to the cross-linked polybenzimidazole disclosed by the invention, a stable and uniform Si-O-Si cross-linked network is constructed by adding the cross-linking agent and taking a hydroxyl group on the polybenzimidazole as a main reaction site, so that synchronous improvement of antioxidant stability and proton conductivity is synergistically realized. The polybenzimidazole proton exchange membrane containing the cross-linking agent has a good application prospect in the aspect of proton exchange membrane fuel cells.

The invention belongs to the technical field of metal cutting lubrication, and provides a fully-synthetic cutting fluid based on a self-repairing material and a preparation method thereof. The fully-synthetic cutting fluid is prepared by adding a plurality of components such as self-repairing microcapsules, ethyl lactate, polyether, polysiloxane and an antioxidant on the basis of a castor oil-based isocyanate polymer. The method comprises the following steps: firstly, reacting castor oil with isocyanate under the action of a catalyst to prepare a pre-product; the preparation method comprises the following steps: preparing a pre-product, reacting the pre-product with diphenylmethane diisocyanate, a chain extender and the like in an aqueous solution to generate a polyurea microcapsule with a self-repairing function, and finally mixing the microcapsule with ethyl lactate, polyvinyl ether, an antioxidant, stearic acid and the like to obtain the fully synthetic cutting fluid. The fully synthetic cutting fluid has excellent lubrication, corrosion resistance and oxidation resistance; meanwhile, active substances can be released after damage due to the self-repairing characteristic of the microcapsules, and the stability of the material is further enhanced.

The invention relates to the field of anticorrosive paint, in particular to hyperbranched epoxy resin anticorrosive paint and a preparation method thereof. The coating is a two-component system, wherein a component A comprises an epoxy resin main body, 5-20 parts of a hydroxyl-terminated hyperbranched polyester modifier, a flaky filler, an anti-rust pigment, a reactive diluent and an auxiliary agent; the algebra of the hyperbranched polyester is G2-G4, and the hyperbranched polyester is prepared by melt polycondensation of trimethylolpropane and 2, 2-dimethylolpropionic acid; and the component B is a polyamide curing agent. The preparation method comprises the following steps: synthesizing hyperbranched polyester; pre-mixing the component A with epoxy resin, grinding and dispersing with filler and auxiliaries, and mixing paint to obtain a component A; mixing a curing agent with a coupling agent to obtain a component B; by utilizing the unique structure of the hyperbranched polyester, the epoxy coating is obviously toughened on the premise of not losing the hardness, the viscosity of the system is reduced, the constructability and the filler dispersity are improved, and finally the high-performance coating with impact resistance, strong adhesion and long-acting corrosion resistance is obtained.

The invention provides a GaN-based semiconductor laser chip with a kink-inhibiting upper waveguide layer. The GaN-based semiconductor laser chip comprises a substrate, a lower coating layer, a lower waveguide layer, an active layer, an upper waveguide layer, an electron blocking layer and an upper coating layer which are sequentially arranged from bottom to top. By designing the refractive index coefficient of the upper waveguide layer, the descending angle of the peak position of hole mobility in the direction of the upper coating layer and the ascending angle of the valley position in the direction of the active layer, the carrier limiting effect of the upper waveguide layer is enhanced, the leakage of electrons to one side of the upper waveguide layer is reduced, the permeation and expansion of carriers to a passive region are inhibited, and the performance of the device is improved. The radiation mode shape distortion is inhibited, the radiation recombination loss is reduced, the radiation recombination efficiency and the external differential component efficiency of a fundamental mode are improved, the threshold current density and the kink critical current are reduced, and the slope efficiency and the optical power of the laser are improved.

The invention relates to the technical field of closed weeding, and discloses a closed weeding system and method suitable for heavy soil in hilly areas, and the system comprises a collection module which is used for collecting terrain flatness and environment information; the processing module is used for determining the initial spraying speed of the precise rape direct seeding machine according to the terrain flatness, judging whether the initial spraying speed is adjusted or not according to the environment humidity, and adjusting the initial spraying speed according to the environment humidity to obtain a final spraying speed value; the processing module is also used for determining the spraying initial pressure of the rape precision direct seeding machine according to the wind speed, judging whether to adjust the spraying initial pressure according to the environment humidity, and adjusting the spraying initial pressure according to the environment humidity to obtain a spraying pressure final value; and the decision module is used for spraying weeding pesticide to the ground according to the spraying speed final value and the spraying pressure final value. The precision and consistency of spraying are improved, weed control of the rape field in the hilly area can be improved, pesticide is saved, and the weeding efficiency is improved.

The present application relates to the technical field of paint, in particular to a polyurethane powder coating with good heat preservation and insulation performance, which is configured according to the mass fraction of each raw material: 25-40 parts of hydroxyl acrylic acid resin; 10-20 parts of hexamethylene diisocyanate trimer; 8-18 parts of rice husk ash derived porous silica microspheres; 5-15 parts of waste tire rubber powder modified carbonized particles; 3-8 parts of functional filler; 0.5-1.5 parts of polyethylene wax leveling agent; and 0.2-0.8 parts of polyether modified silicone defoaming agent. In the present application, the thermal bridge effect caused by interface defects can be reduced, the porous structure can significantly reduce the overall thermal conductivity of the coating through the synergistic effect of scattering thermal radiation, inhibiting gas molecular convection and conduction and prolonging the solid heat conduction path, and this structural characteristic makes it an ideal insulation functional unit, thereby greatly improving the heat preservation performance of the coating.

The utility model relates to the technical field of grouting equipment, and discloses hydraulic engineering pile foundation grouting equipment which comprises a base, a supporting column and a hole are fixedly arranged on the base, a fixing plate is fixedly installed at the top end of the supporting column, a second conveying pipe is installed in the middle of the fixing plate, and one end of the second conveying pipe is fixedly connected with a telescopic pipe. A pipeline connecting piece is fixedly installed on the side, away from the second conveying pipe, of the telescopic pipe, and a movable plate is fixedly installed at the top end of the pipeline connecting piece. According to the grouting raw material stirring device, grouting raw materials enter the stirring barrel through the feeding opening, the first motor is started, the output end of the first motor drives the rotating shaft to rotate, then the stirring blades on the rotating shaft are driven to stir the grouting raw materials, the grouting raw materials are fully mixed, and it is guaranteed that the quality of the stirred grouting materials is uniform and consistent; and meanwhile, the grouting pipe and the drill bit are lifted and stored through the lifting mechanism, the grouting pipe and the drill bit are protected, the grouting pipe and the drill bit are prevented from being collided and damaged, and the service life of the drill bit is prolonged.

The invention relates to a high-strength anti-loosening freezing connector structure and a super-hydrophobic surface manufacturing method thereof. The high-strength anti-loosening freezing connector structure comprises a fixing body, a steel rail is arranged on one side of the fixing body, gaskets are arranged on the two sides of the steel rail, first bolts are arranged on the gaskets, and anti-following-rotation gaskets are arranged between the first bolts and the gaskets. A nut and a nut locking nut are further arranged between the first bolt and the gasket, a cotter pin is arranged on the nut locking nut, and the nut and the follow-up rotation preventing gasket are arranged at the two ends of the first bolt respectively. The technical problems that in the prior art, due to nut loosening, fastening force of the freezing connector is attenuated, the bolt rotates along with the nut, and the mounting quality and the service life are affected by icing on the surface of the connector are solved.

The utility model relates to the technical field of heat exchangers, and provides a temperature detection system. The temperature detection system comprises at least one temperature sensor and a display device. The temperature sensor is located at the joint of the straight pipe section and the bent pipe section of the air conditioner heat exchanger and used for detecting the temperature of the joint. The display device is in communication connection with the temperature sensor and used for displaying temperature. At least one temperature sensor is arranged at the connecting position of the straight pipe section and the bent pipe section of the air conditioner heat exchanger, so that actual temperature data of the connecting position can be accurately monitored and collected in real time; the display device displays the temperature value of the welding spot in real time, visual and consistent reading is provided, human judgment errors are eliminated, and accurate determination of the temperature of the welding spot is achieved; the whole system can solve the technical problems that in the prior art, due to the fact that judgment of people on the temperature of the welding spot mainly depends on previous experience and visual inspection, individual differences are obvious, and the temperature of the welding spot cannot be accurately determined.

The invention discloses a waterproof drainage structure for a high-performance stone curtain wall and a construction method, the structure comprises a stone panel assembly, a waterproof sealing assembly and a connecting and fixing assembly, the stone panel assembly comprises a plurality of groups of stone panels (1) provided with T-shaped grooves, limiting holes (7) and first threaded holes; the waterproof sealing assembly comprises a T-shaped block (2) fixedly connected with a concave rubber block (3), a limiting nail (14) and a supporting plate (15), wherein the surface of the supporting plate (15) is fixedly connected with a concave-convex rubber pad (16), and the waterproof sealing assembly is used for sealing gaps between the stone plates and draining water. The connecting and fixing assembly enables the L-shaped block (5), the fixing block (8), the limiting block (10) and the fixing plate (13) to be fixedly connected through threaded nails and fixes the stone plate to the stand column and the cross beam, and the stone plate (1) is separated from the civil engineering wall face. According to the structure, the problems of water seepage, deformation and the like possibly encountered in the using process of the stone curtain wall are effectively solved, and the durability of the curtain wall is improved. Meanwhile, the structure is easy and convenient to install, and construction efficiency is improved.

This invention belongs to the field of environmentally friendly fuel technology, specifically relating to a method for preparing a green, low-carbon, and highly efficient modified fuel for alcohol-hydrogen engines. This invention comprehensively improves fuel performance through a progressive synergistic architecture of a bio-methanol platform – an oxygen-containing combustion-promoting system – a stability barrier – and a low-energy-consumption blending path. Using bio-methanol as a base, it optimizes combustion by compounding with oxygen-containing components such as 2-MTHF and DMM / MF, achieving rapid ignition, emission reduction, and noise reduction. Phase behavior is regulated by isobutanol and polyether-modified silicon, achieving a reversible and stable phase without the need for high-HLB surfactants, preventing deposition and gas lock. A four-fold protective barrier is constructed using GMO and fluorinated silica polyethers, combined with antioxidant synergy to achieve corrosion resistance and aging resistance. The process adopts a sequential design of front-end purification – mid-stage two-phase construction – and end-stage static mixing, achieving low-energy homogenization and ensuring storage, transportation, and operational stability.

The invention discloses a preparation method and application of a three-dimensional flower-shaped NixPy-NixSy composite structure, and belongs to the field of NixPy-NixSy composite materials.According to the method, nickel nitrate hexahydrate, ammonium fluoride and urea are selected for preparing a reaction solution, a high-temperature sealed reaction is conducted for sample manufacturing, the sample is made to react with phosphorus powder to manufacture pure-phase NixPy, and the pure-phase NixPy is prepared; according to the preparation method, NixPy-NixSy is used as a raw material and further reacts with sulfur powder to generate the composite material NixPy-NixSy, so that the NixPy-NixSy composite material with regular morphology and excellent dispersity is formed, the NixPy-NixSy composite material has relatively large specific surface area and forms more active contact positions, and meanwhile, the reaction temperature of the synthesis method is far lower than the high temperature required by other methods, so that the particle size is convenient to control, and the preparation method is suitable for industrial production. Therefore, the turnover frequency and the relative reactivity of the crystal face are convenient to estimate, the emission of toxic and harmful gas PH3 is reduced, the phosphating efficiency is remarkably improved, and the transition metal phosphorus sulfide is applied to the field of humidity sensitivity for the first time to construct a novel humidity sensor.

The invention discloses a tulobuterol transdermal patch with a gradient drug release structure and a preparation method of the tulobuterol transdermal patch, belongs to the technical field of transdermal drug delivery systems, and aims at solving the problems that an existing single-layer tulobuterol patch takes effect slowly and is insufficient in later-stage drug release power. The transdermal patch sequentially comprises a backing layer, a gradient medicine-containing substrate layer and an anti-sticking release layer from top to bottom, the gradient drug-containing matrix layer comprises a high-concentration top long-acting drug release layer containing tulobuterol-mesoporous silica nanoparticles and a silicone adhesive, a middle-concentration middle stable drug release layer containing an SIS hot melt adhesive, and a low-concentration bottom quick-acting contact layer containing a specific penetration enhancer composition and an acrylate adhesive from top to bottom in sequence. Through the synergistic effect of bottom-layer penetration promoting driving, middle-layer stable transition and top-layer nanometer storage cavern relay, the traditional concentration barrier is broken through, and rapid effect taking within 1-2 hours and stable-state long-acting drug release within 24 hours or above are perfectly considered.

The utility model discloses a kind of anticorrosive structures of concrete pool, the anticorrosive structure includes a concrete pool main body and a anticorrosive structure main body being set in the concrete pool main body, the anticorrosive structure main body includes sequentially connected from bottom to top: a reinforced concrete component layer being fixedly connected at the bottom of the concrete pool main body;A waterproof layer;A first vinyl resin layer;A glass fiber short-cut felt layer;A second vinyl resin layer;A first glass fiber layer;A third vinyl resin layer;A second glass fiber layer;A fourth vinyl resin layer;A third glass fiber layer;And a fifth vinyl resin layer.The utility model effectively solves the problem that the anticorrosive force of existing concrete pool is limited, and corrosion failure is likely to occur during long-term use, and concrete pool is also likely to crack and permeate, which affects normal use.