2193results about How to "Prevent penetration" patented technology

The invention discloses an aluminum-plastic composite panel with a fireproof structure, and relates to the technical field of aluminum-plastic composite panels, the aluminum-plastic composite panel comprises a fireproof layer, and a top aluminum plate mounting plate is mounted at the bottom of the fireproof layer. Then, the heat is transferred to a heat-conducting metal conduction sheet plate and then transferred to a wire fixing heat-conducting end, so that the temperature is rapidly increased, the wire fixing heat-conducting end transfers heat to a polyethylene fracture node, so that the polyethylene fracture node is melted and fractured, a polypropylene fiber connecting wire ring losing support also melts, a limiting hook is released, and a needling trigger piece rapidly punctures a flame-retardant gas storage device; the flame-retardant gas is released, and the flame-retardant gas is quickly diffused to the periphery of the flame along with the quick release of the flame-retardant gas to form a protective layer, so that the contact between the flame and surrounding combustible materials is effectively isolated, and further spreading of the fire behavior is slowed down or even stopped.

The invention provides a high-barrier fresh-keeping low-temperature heat-sealing composite film and a manufacturing process and application thereof, the composite film sequentially comprises a heat-sealing layer, a barrier layer, a reinforcing layer and a surface treatment layer from the inner layer to the outer layer, and the layers are bonded through bonding layers. The heat-sealing layer is prepared from modified polyethylene, polypropylene and a heat-sealing auxiliary agent, and the barrier layer is made of a composite material of nano aluminum oxide, polyvinylidene fluoride and an ethylene-vinyl alcohol copolymer. The enhancement layer is a polyester film, and the surface treatment layer is subjected to corona treatment. The composite film is prepared through a specific manufacturing process, and the specific manufacturing process comprises the steps of preparation of the heat sealing layer and the blocking layer, compounding, curing treatment, surface treatment and the like. The composite film disclosed by the invention has excellent barrier property and low-temperature heat-sealing capability, is suitable for vacuum packaging or modified atmosphere packaging of foods, and effectively prolongs the fresh-keeping period and the shelf life of the foods.

The invention discloses a double-row steel sheet pile and soil core combined cofferdam structure and a construction method. The double-row steel sheet pile and soil core combined cofferdam structure comprises double-row pile connecting units, steel sheet piles, brackets, steel enclosing purlins, dredger fill and drainage plates. Each double-row pile connecting unit is formed by welding an upper connecting plate between two connecting steel sheet piles; the double-row pile connecting units are inserted into a soil body, and a steel sheet pile is inserted between every two double-row pile connecting units; corbels are welded to the outer sides of the steel sheet piles, steel enclosing purlins are arranged on the corbels, and the steel enclosing purlins, the steel sheet piles and the corbels are connected in a welded mode; dredger fill is filled between the two rows of steel sheet piles and is compacted by a hammer-attached soil squeezer; a drainage plate is inserted into the dredger fill; earth excavation is conducted on the side, close to water, of the double-row pile cofferdam to form a foundation pit; when shallow excavation is conducted on the foundation pit, no sand filling pipe bag is arranged; when the foundation pit is deeply excavated, a slope section is reserved; sand filling pipe bags are arranged on the outer side of the slope section and stacked on the outer side of the slope section in a staggered mode. The hammer-attached soil squeezing device comprises an attached hammer, a pressing plate, water permeable holes, geotechnical cloth and a brush.

The invention discloses an underground building bottom plate advanced water stop post-cast strip structure which comprises a cushion layer concrete layer, other waterproof layers are arranged on the cushion layer concrete layer, and waterproof layer protection layers are arranged on the other waterproof layers. An earthwork groove is formed in the cushion layer concrete layer, same-bottom-plate steel bar layers are arranged on the two sides of the earthwork groove, and a waterproof assembly used for preventing water is arranged between the same-bottom-plate steel bar layers. A bottom plate bottom layer steel bar layer is arranged at the upper end of the same bottom plate steel bar layer, and two mud blocking assemblies are installed on the bottom plate bottom layer steel bar layer. A post-cast strip groove is formed between the two lower fast-easy closing-in nets and the two upper fast-easy closing-in nets, and a supporting part used for supporting is arranged in the post-cast strip groove. The lower fast and easy closing-in net and the upper fast and easy closing-in net can be supported, the stability of the lower fast and easy closing-in net and the stability of the upper fast and easy closing-in net can be improved during bottom plate concrete pouring, and then the stability of the overall structure is improved.

The invention provides a high-heat-conductivity and high-corrosion-resistance magnesium alloy suitable for a mobile phone middle plate and a preparation method of the high-heat-conductivity and high-corrosion-resistance magnesium alloy, and belongs to the technical field of magnesium alloy materials. The magnesium alloy is composed of, by mass, 3.0%-5.0% of Al, 1.0%-3.0% of Ce, 0.5%-2.0% of Nd, 0.1%-1.0% of Sn, impurity elements Fe smaller than or equal to 0.06%, Cu smaller than or equal to 0.004%, Ni smaller than or equal to 0.002% and the balance magnesium. After the magnesium alloy is subjected to a 7-day neutral salt spray experiment, the measured weightlessness corrosion speed is 0.236 mm / y, the yield strength reaches 150-160 MPa, the tensile strength is 250-280 MPa, the ductility is 8-12%, and the heat conductivity is 110-120 W / (m.K).

The invention relates to the technical field of cement-based anticorrosive materials, and particularly discloses a modified magnesium phosphate cement anticorrosive material as well as a use method and application thereof. The anticorrosive material comprises the following components in parts by weight: 100 parts of modified magnesium phosphate cement, 3-15 parts of a retarder, 1-10 parts of an epoxy resin glue solution, 0.5-5 parts of metakaolin and 15-20 parts of water. The modified magnesium phosphate cement comprises dead burned magnesium oxide and modified phosphate in a mass ratio of (1-4): 1. The modified phosphate is prepared from the following raw materials: nano aluminum oxide, sodium citrate and phosphate in a mass ratio of (0.5-1.5): (0.5-1.5): (20-25). The epoxy resin glue solution comprises uncured epoxy resin glue and a curing agent. The anti-corrosion material provided by the invention has the technical advantages of strong adhesive property and excellent anti-corrosion property, and can better provide protection for a steel structure serving in a marine environment.

The utility model belongs to the technical field of perovskite cells, and discloses a novel packaging structure of a perovskite solar cell. Comprising a substrate and a perovskite solar cell arranged above the substrate, the perovskite solar cell is coated with a first packaging layer, a second packaging layer is arranged above the first packaging layer, the second packaging layer comprises a plurality of groups of blocking layers, each blocking layer comprises a hydrophobic layer and a water oxygen absorption layer which are alternately arranged from bottom to top, and the hydrophobic layers and the water oxygen absorption layers are arranged on the substrate. A hydrophobic layer is arranged on the uppermost layer in the barrier layers; and the blocking layer is coated with a sealing layer. And external water vapor and oxygen are subjected to multiple absorption and multiple blocking, so that the probability that the water vapor enters the perovskite battery is reduced. The water vapor barrier property is improved, the water vapor is prevented from permeating the surface of the perovskite solar cell, the probability of degradation caused by water vapor entering a perovskite layer in the perovskite solar cell is reduced, and the service life of the perovskite solar cell is prolonged.

The invention discloses a halogen-free flame-retardant environment-friendly heat-resistant cable and a preparation method thereof, belongs to the technical field of cable material processing, and is used for solving the technical problem that the mechanical strength and heat resistance of a halogen-free flame-retardant environment-friendly cable in the prior art need to be further improved. The cable comprises a plurality of cable conductors, a wrapping layer and a sheath layer which are sequentially arranged from inside to outside, and the sheath layer comprises the following components in parts by weight: 70-80 parts of low-density polyethylene, 20-30 parts of modified polysiloxane, 10-16 parts of modified polyvinyl alcohol, 15-18 parts of modified kaolin, 2-3 parts of an initiator and 3-4 parts of an auxiliary additive. Low-density polyethylene is reinforced and modified through modified kaolin, modified polyvinyl alcohol and modified polysiloxane, so that not only are the mechanical strength and flame retardance of the environment-friendly heat-resistant cable effectively improved, but also the high-temperature resistance of the cable is improved, and the service life of the cable in a high-temperature environment is prolonged.

The invention discloses an ultraviolet barrier film as well as a preparation method and application thereof. The ultraviolet barrier film is prepared from the following raw materials in percentage by weight: 20-40% of polyvinyl alcohol; 20%-30% of sodium carboxymethyl cellulose; 5%-10% of carbon quantum dots; and 30%-45% of water chestnut starch. The preparation method of the ultraviolet barrier film comprises the following steps: 1) preparing a polyvinyl alcohol solution, a sodium carboxymethyl cellulose solution, a carbon quantum dot dispersion liquid and a water chestnut starch solution; 2) preparing gelatinized mixed slurry; and 3) carrying out film casting on the gelatinized mixed slurry, and drying to obtain the ultraviolet barrier film. The ultraviolet barrier film has the advantages of being excellent in ultraviolet barrier performance, good in moisture barrier performance, high in mechanical strength, high in transparency, environmentally friendly, degradable and the like, can be used as a packaging material, and is simple in preparation method, low in production cost and suitable for large-scale industrial production and application.

The embodiment of the invention relates to the photovoltaic field, and provides a photovoltaic cell and a manufacturing method thereof, a laminated cell and a photovoltaic module, the photovoltaic cell comprises a substrate with a front surface and a back surface opposite to each other along a first direction, and the back surface is provided with first metallized regions and first non-metallized regions which are alternately arranged; the tunneling layer and the doped polycrystalline silicon layer are located on the back face and are sequentially stacked in the first direction; the amorphous silicon layers are arranged at intervals and embedded in the part, located in the first metallization region, of the doped polycrystalline silicon layer, and the first thickness of the amorphous silicon layers is smaller than the second thickness of the part, located in the first non-metallization region, of the doped polycrystalline silicon layer in the first direction; the back electrodes are in one-to-one correspondence with the amorphous silicon layers and are at least in contact connection with the amorphous silicon layers, and the back electrodes are embedded into the amorphous silicon layers with at least partial thickness in the first direction. The embodiment of the invention is at least beneficial to improving the light absorptivity of the substrate and avoiding further permeation of the electrode so as to comprehensively improve the photoelectric conversion efficiency of the photovoltaic cell.

The invention discloses a liquid crystal composition, a liquid crystal display element containing the liquid crystal composition and a liquid crystal display. The liquid crystal composition comprises one or more compounds as shown in a formula I and at least one or more terminal alkene liquid crystal compounds. The liquid crystal composition is a PSVA liquid crystal composition, and is especially suitable for a display or a TV. The liquid crystal composition has good solubility and high polymerization temperature, and when the liquid crystal composition is used in a liquid crystal display element or a liquid crystal display prepared by adopting a PI-less technology, a compact film layer with relatively high temperature reliability can be formed. And # imgabs0 # I is adopted.

The invention relates to a super-hydrophobic antifouling self-cleaning coating and a preparation method thereof. The coating comprises the following components in parts by weight: 20-50 parts of fluorocarbon resin; 1-10 parts of modified graphene oxide; 1 to 10 parts of modified nano silicon dioxide; 5-15 parts of a curing agent; 1-5 parts of a dispersant; 1-5 parts of a leveling agent; 1-5 parts of a defoaming agent; 30 to 60 parts of a solvent; the modified graphene oxide is prepared by modifying graphene oxide with gamma-methacryloxy propyl trimethoxy silane, and the modified graphene oxide is prepared by modifying graphene oxide with gamma-methacryloxy propyl trimethoxy silane; the modified nano silicon dioxide is prepared by modifying silicon dioxide through octyl triethoxy silane and nonafluorohexyltriethoxy silane. Compared with the prior art, the coating obtained by the invention has the advantages of excellent adhesive force, super-hydrophobicity, strong cleaning capability, difficulty in causing pollution, excellent acid resistance, alkali resistance and salt spray resistance, and can be applied to places such as buildings, cross-sea bridges, ships and the like which are eroded by rainwater for a long time and corroded by seawater.

The invention relates to a micro-nano aggregate based on silanized calcium sulfate whisker in-situ polymerization, the main component of the micro-nano aggregate is acrylate copolymerized CSW / NS-GO, and the preparation method comprises the following steps: loading nano silicon dioxide on the surface of calcium sulfate whisker to obtain CSW / NS; carrying out silanization modification on CSW / NS; preparing graphene oxide by a Hummers method; and carrying out in-situ polymerization to prepare the acrylate copolymerized CSW / NS-GO. Calcium sulfate whiskers are loaded and bonded with epoxy modified nano silicon dioxide and then subjected to in-situ polymerization with graphene oxide in an acrylic monomer, a polymer chain is tightly combined with a functional group of CSW / NS-GO, good interface bonding is formed, and the strength and toughness of the composite material are improved. The acrylate copolymerized CSW / NS-GO has a microscopic three-dimensional network structure and excellent stability, so that the internal structure of the concrete is more compact, the porosity is reduced, the permeation of water is prevented, and the invasion of harmful substances such as chloride ions and sulfate ions into channels is reduced, thereby reducing the structural damage caused by environmental factors such as dry-wet cycle and freeze-thaw cycle; the durability of the concrete is improved.

The invention provides an anti-rust and anti-corrosion coating for ships and a preparation method thereof. The anti-rust and anti-corrosion coating for the ship is prepared from the following components in percentage by mass: 40 to 70 percent of epoxy emulsion, 10 to 20 percent of polyether amine curing agent, 5 to 10 percent of styryl POSS polymer, 10 to 15 percent of anti-rust filler, 10 to 40 percent of deionized water and 1 to 3 percent of additive. The added styryl POSS polymer and the epoxy emulsion are subjected to a grafting reaction to form covalent bonding, the grafting action enables the styryl POSS polymer to serve as a catenary to be combined with the epoxy emulsion, the obdurability of the coating is enhanced, the epoxy emulsion and the polyether amine curing agent are combined to act together, and the coating has the good anti-corrosion effect. The marine paint has the advantages that the marine paint is adsorbed on all oxide substrates of a ship through static electricity and a donor-acceptor interaction mechanism, so that a coating layer formed by the marine paint can fully cover the surface of the ship, a uniform and compact protective layer is formed, oxygen and molecules can be effectively isolated, and the anti-corrosion and anti-rust effects are further improved.

The invention relates to the technical field of photovoltaic panels, and discloses an enhanced flexible photovoltaic panel, a preparation method thereof and a flexible light photovoltaic module. The reinforced flexible photovoltaic panel comprises a moisture-proof protective layer, a composite fiber reinforced plate and an inner bonding material layer which are sequentially laminated and compounded from outside to inside, the moisture-proof protective coating comprises organic silicon resin, acrylic resin, an organic silicon water repellent, a filler, an antioxidant, a defoaming agent, a flatting agent, a curing agent and a catalyst which are mixed according to the mass ratio of (40-75): 30: 4: 8: 0.5: 0.3: 0.3: 10: 0.5; the molecular weight of the organic silicon resin is 1000 to 4000. According to the enhanced flexible photovoltaic panel, the moisture-proof protective coating is optimized, and through cooperation of all the layers, the comprehensive performance, reliability and stability of the flexible light photovoltaic module can be effectively improved, the defects of a traditional flexible module in the aspects of bending strength, hardness, high temperature resistance, moisture resistance and the like are overcome, and the service life of the flexible light photovoltaic module is prolonged.

The invention discloses a method for modifying lutein lipidosome by composite polyphenol, which comprises the following specific steps: (1) dissolving lutein and a lipid material to obtain a lutein lipid solution, and carrying out rotary evaporation to form a film; (2) dissolving the composite polyphenol in a thermal phosphate solution, and hydrating the xanthophyll film; (3) carrying out rotary evaporation after hydration to form a film, and adding a cholate solution for redissolving; and (4) after ultrasonic treatment, passing through a polycarbonate film and extruding to obtain the lutein liposome. The lutein liposome modified by the composite polyphenol has the characteristics of high stability and high bioavailability, and the accumulation of lutein in liver and plasma can be remarkably improved.

The utility model discloses a self-powered friction structure and an insole. The self-powered friction structure comprises a negative electrode structure which comprises a first negative electrode material layer, a conductive fabric layer and a second negative electrode material layer which are connected in sequence, and the conductive fabric layer is located between the first negative electrode material layer and the second negative electrode material layer; the positive electrode structure comprises a positive electrode material layer and a base layer which are connected with each other; the plurality of elastic columns are uniformly distributed and are connected with the second negative electrode material layer and the positive electrode material layer to form a hollow structure; the first negative electrode material layer and the second negative electrode material layer adopt an electric polarity material different from that of the positive electrode material layer; the negative electrode structure, the elastic column and the positive electrode structure are integrally formed. According to the self-powered friction structure and the insole, the self-powered friction structure is integrally formed, has the advantages of being high in durability and stable in voltage output, can be conveniently cut at will, and meets the requirement for large-scale production.

The invention relates to the technical field of cool fabric preparation, in particular to a waterproof and sun-proof twill tatting superfine cool fabric and a preparation process, the waterproof and sun-proof twill tatting superfine cool fabric is composed of a warp and weft twill tatting blank, a waterproof coating covering the blank, and a cool finishing agent sprayed and shaped on the surface of the waterproof coating; through coating of the waterproof agent and the cross-linking agent and special drying treatment, the fabric has excellent waterproof performance, and water permeation is effectively blocked; in the preparation process of the fabric, sun protection is provided through padding treatment, and the passing rate of ultraviolet rays is reduced; the twill tatting structure is combined with specific drying, baking and calendaring treatment, so that the structural stability and wear resistance of the fabric are enhanced, and the air permeability of the fabric is ensured while the waterproof effect of the fabric is not influenced; due to the use of the cool-feeling finishing agent and the fine shaping treatment, the soft and comfortable hand feeling of the fabric is ensured, and the fabric can have a good temperature adjusting effect.

The invention discloses a basement outer wall post-cast strip structure and a construction method, and relates to the technical field of constructional engineering.The basement outer wall post-cast strip structure comprises a post-cast strip body arranged on a building outer wall and two pre-embedded steel plates laid on the side wall of the post-cast strip body, and the two pre-embedded steel plates are arranged on the two sides of the post-cast strip body respectively; a rubber waterstop is arranged at the joint position of the two embedded steel plates, and the rubber waterstop is fixedly connected with the embedded steel plates on the two sides respectively. On the premise of meeting the basic functions of the post-cast strip main body, the anti-seepage performance of the post-cast strip main body part is enhanced, the water seepage risk is effectively reduced, the service life of a building is prolonged, and the safety of the building is improved.

The invention discloses a waterproof wear-resistant label and a preparation process thereof, and belongs to the technical field of label paper.The waterproof wear-resistant label comprises surface paper, an adhesive, a film coating layer and release bottom paper, the adhesive comprises the following raw materials in parts by mass: 60-80 parts of an acrylic monomer, 3-5 parts of a polyfunctional group crosslinking monomer, 6-10 parts of a siloxane-acrylate copolymer, 1-2 parts of an initiator, 5-8 parts of nano silicon dioxide and 50-60 parts of a solvent. And a molecular chain of the siloxane-acrylate copolymer contains a boric acid ester bond. A siloxane long chain in the siloxane-acrylate copolymer has low surface energy, can help to form a waterproof barrier, and can effectively prevent water from permeating into an interface between the label and a product, so that the waterproofness of the label is greatly improved; and a dynamic cross-linked network can be formed by introducing boric acid ester bonds, so that the stability is improved, the label structure is reinforced, the wear resistance is improved, and the label can be tightly attached to a base material in a long-term humid environment.

The invention discloses concrete with high salt corrosion resistance and a preparation method of the concrete. The concrete is prepared from 300-400 kg / m < 3 > of cement, 50-150 kg / m < 3 > of slag powder, 1000-1200 kg / m < 3 > of gravel, 650-800 kg / m < 3 > of machine-made sand, 0.5-2 kg / m < 3 > of a modified polycarboxylic acid water reducing agent, 0.005-0.01 kg / m < 3 > of an air entraining agent, 0.05-0.1 kg / m < 3 > of an ion chelating agent, 0.05-0.1 kg / m < 3 > of polyacrylamide, 0.01-0.05 kg / m < 3 > of sodium methyl silicate, 0.1-0.5 kg / m < 3 > of multiwalled carbon nanotube dispersion liquid and 140-160 kg / m < 3 > of water. The preparation method comprises the following steps: stirring and mixing the modified polycarboxylate superplasticizer, the air entraining agent, the ion chelating agent, the polyacrylamide, the sodium methyl silicate and part of the water for mixing to obtain an admixture mixed solution; sequentially putting broken stones, cement, machine-made sand, the admixture mixed solution, the multi-walled carbon nanotube dispersion liquid and the rest of mixing water into a stirrer, and stirring for 2-3 minutes, so as to obtain the concrete with high salt corrosion resistance. The concrete has high salt corrosion resistance in a complex service environment, the service life of a concrete structure is effectively prolonged, and a reliable guarantee is provided for infrastructure construction.

The invention relates to a connection construction method between a newly-built station and an existing station, which is characterized in that underground diaphragm walls formed in respective excavation construction stages are arranged between station hall layers of main body structures of the existing station A and the newly-built station B, an overburden layer is arranged on the top surface of the station hall layer of the existing station A, and a construction trestle is arranged on the top surface of the station hall of the newly-built station B; in order to achieve transfer between the existing station A and the newly-built station B, transformation connection is conducted through a subsection breaking method and a constructed reinforced concrete frame, and anchoring connection is conducted between the reinforced concrete frame and a station main body structure through a steel bar planting method. When the side wall and the underground wall of the existing station A are broken, measures such as overlying soil unloading, construction of a water retaining and draining system and temporary supporting of a station hall layer are taken, so that the connection construction safety of the new station and the old station and the structure safety of the existing station A are ensured, and meanwhile, transfer connection between the two stations is smoothly realized; and the problem that the overall performance of the station is affected due to the fact that water seepage is prone to occurring at the connecting point of the existing station A and the newly-built station B is solved.

The invention discloses a preparation method and application of chlorine dioxide preservative paper.The preparation method comprises the steps that starch, nanocellulose, hydrogen peroxide, ferric sulfate, distilled water and sodium hydroxide are mixed to obtain gelatinized starch, and then the gelatinized starch is mixed with water-based acrylic resin, casein, alkyl glycoside and ammonium persulfate to obtain composite starch glue; mixing sodium chlorite and composite starch glue to obtain fresh-keeping coating liquid A, and then coating the fresh-keeping coating liquid A on fresh-keeping base paper to obtain fresh-keeping coating liquid A paper; citric acid and distilled water are mixed to obtain fresh-keeping coating liquid B, and then fresh-keeping base paper is soaked in the fresh-keeping coating liquid B to obtain fresh-keeping coating liquid B paper; the fresh-keeping coating liquid A paper and the fresh-keeping coating liquid B paper are attached to obtain the chlorine dioxide fresh-keeping paper. The chlorine dioxide fresh-keeping paste is pasted on the inner side of the blueberry packaging box cover to keep the blueberries fresh. The chlorine dioxide preservative paper prepared by the invention can solve the problems of burst release and short retention time of chlorine dioxide, can reduce the problems of easy softening, rot and deterioration of picked blueberries, prolongs the shelf life of the blueberries, and improves the commodity value of the blueberries.

The invention discloses incombustible water-based aerosol spray paint and a preparation method thereof, and relates to the technical field of spray paint. When the non-combustible water-based aerosol spray paint is prepared, firstly, p-(triethoxysilyl) acetophenone reacts with trimethylchlorosilane, and then the reaction product and tetramethyl tetravinyl cyclotetrasiloxane are subjected to ring opening polymerization to obtain modified polysiloxane; grafting epoxy resin with 4-vinyl-methyl benzoate, reacting with modified polysiloxane to obtain modified epoxy resin, and emulsifying to obtain a modified epoxy resin emulsion; secondly, reacting the silicon dioxide subjected to acylating chlorination with 4-hydroxy-2, 2, 6, 6-tetramethylpiperidine nitroxide free radicals, reacting with 3-(3-thienyl) propionaldehyde, and reacting with thiophene and 3-vinyl thiophene to obtain modified silicon dioxide; and finally, mixing the modified epoxy resin emulsion, pure water, the modified silicon dioxide, a curing agent and a photoinitiator to prepare the incombustible water-based aerosol spray paint.

The invention discloses a fuel cell metal bipolar plate with a multi-layer composite gradient coating and a preparation method of the fuel cell metal bipolar plate, and relates to a preparation method of a surface coating of a fuel cell metal bipolar plate. The problem that a metal bipolar plate in a fuel cell is poor in corrosion resistance is solved. The Ti / TiN / TiCN multi-layer composite gradient is prepared on a substrate through a multi-arc ion plating technology by regulating and controlling parameters such as air pressure and flow of nitrogen and methane, the coating is composed of a pure Ti base layer and a transition layer with three to five periods, a gradient multi-layer structure is adopted, TiN metal nitride with good conductivity is adopted, and the conductivity of the coating is greatly improved. The interface contact resistance is reduced, meanwhile, the permeation of corrosive liquid and the further corrosion of the corrosive liquid to the coating and the matrix material are effectively prevented, the corrosion resistance of the metal bipolar plate in an acid environment is remarkably improved, and the interface contact resistance of the surface of the metal bipolar plate under the working pressure of a fuel cell is reduced.

The invention discloses an IPNs anti-corrosion antibacterial coating in a marine environment as well as a preparation method and application thereof, and belongs to the technical field of coatings. The coating comprises a semi-finished product A and a semi-finished product B in a weight ratio of 1: 1; the semi-finished product A comprises the following raw materials in parts by mass: 35-45 parts of acrylic acid, 1-4 parts of an antibacterial agent and 3-12 parts of a dispersing agent; the semi-finished product B comprises the following raw materials in parts by mass: 6-12 parts of a curing agent, 3-8 parts of a film-forming agent and 8-15 parts of a pH regulator; 20 to 32 parts of a filling agent; the curing agent comprises an organic silicon curing agent and a fatty acid anhydride curing agent in a mass ratio of (4-7): (2-6). The invention further provides a preparation method of the coating and application of the coating in marine operation equipment. The marine operation equipment comprises a naval vessel, an anchor chain, drilling equipment, an instrument and a culture net cage. The anti-corrosion and antibacterial performance of the coating is effectively improved, the curing time is short, the subsequent coating method is simple and easy to implement, and the coating is suitable for large-scale production.

The invention relates to the technical field of paperboard products, and discloses an environment-friendly mildew-proof and antibacterial corrugated paperboard and a preparation method thereof. The quaternary ammonium salt substance of the modified terminal isocyanate polyurethane can attack the cell membrane or cell wall of microorganisms, so that the cell membrane function is affected and irreversible damage is caused to the structure of the microorganism organelles. The chemical element S is contained in the structure and has strong oxidizing and reducing properties, so that the cell membrane of microorganisms can be destroyed, organic matter can be decomposed, and the metabolism and growth environment of molds can be destroyed. The epoxy group and isocyanate group of the modified terminal isocyanate polyurethane can react with the hydroxyl group and carboxyl group on the surface of oxidized cassava starch, and at the same time, the dimethylol urea and oligomers in the urea-formaldehyde resin undergo cross-linking reaction with the hydroxyl group in the starch molecules to form a cross-linked network structure, so that water molecules are prevented from penetrating into the paper, thereby improving the bonding strength and water resistance of the corrugated paperboard.

The invention relates to a folding house with an aluminum alloy frame structure, and belongs to the technical field of buildings. The invention relates to a multi-functional greenhouse which comprises a supporting mechanism, a bottom mechanism, a roof mechanism, a side face mechanism, a gable mechanism and a connecting mechanism, the supporting mechanism comprises a bottom supporting piece, a stand column piece and a top supporting piece, the lower end of the stand column piece is connected with the bottom supporting piece, and the upper end of the stand column piece is connected with the top supporting piece; the upper end of the side face mechanism is slidably connected with the roof mechanism, the lower end of the side face mechanism is slidably connected with the bottom mechanism, the two gable wall mechanisms are connected and hinged to the two ends of the stand column piece respectively, and the bottom mechanism and the bottom supporting piece, the roof mechanism and the top supporting piece and the gable wall mechanisms and the stand column piece are hinged through connecting mechanisms. The container house has the effect that the problems that a container house is heavy and not easy to disassemble and assemble are solved.

The present invention relates to the field of surface treatment technology, and in particular to a preparation method and application of a conductive anti-corrosion coating for a magnesium alloy bipolar plate, wherein the preparation method comprises the following steps: S1, mixing a conductive high molecular polymer, an adhesive and an organic solvent to obtain a coating; S2, coating the coating on the surface of the magnesium alloy to form a coating. The present invention uses a magnesium alloy with extremely low density as a substrate, and arranges a corrosion-resistant coating on the surface of the substrate. The corrosion-resistant coating uses a conductive high molecular polymer such as polyaniline as a matrix material. Polyaniline has corrosion inhibition behavior and anion exchange properties. While protecting the underlying metal substrate, it can exchange anions with chloride ions in a corrosive environment to inhibit the penetration of corrosive anions. At the same time, not only is an adhesive added to enhance the bonding strength between the polyaniline coating and the magnesium alloy and to bond the polyaniline particles, but nano-oxides are also added as corrosion inhibitors to further improve the corrosion resistance of the coating.

The present application relates to the technical field of composite materials, and in particular to a high-performance polyether TPU film and a preparation method thereof. A high-performance polyether TPU film comprises the following raw materials by mass: 30-40 parts of dimer acid polyester polyol, 1015 parts of modified polyester polyol, 4060 parts of polyisocyanate, 1-3 parts of nitrile rubber, 10-15 parts of modified glass fiber, 58 parts of chain extender, 13 parts of catalyst, 58 parts of hexafluorobutyl methacrylate, 1-3 parts of coupling agent, 12 parts of antioxidant, and 0.1-0.5 parts of antibacterial agent. The polyether TPU film of the present application has good aging resistance, air permeability, antibacterial property, water resistance, waterproofness, tear resistance, and excellent mechanical properties, making it suitable for wide application in water supplies, water entertainment and other fields.