178results about How to "Improve barrier properties" patented technology

The invention relates to the technical field of stainless steel pipe fittings, in particular to a high-performance anti-corrosion stainless steel pipe fitting and a preparation method thereof.The preparation method of the high-performance anti-corrosion stainless steel pipe fitting comprises the following steps that S1, mechanical polishing is conducted; s2, removing oil; s3, acid treatment is conducted, specifically, the stainless steel pipe fitting blank obtained after oil removal is soaked in an acid surfactant solution for 5-10 min, and the stainless steel pipe fitting blank is taken out, washed with water and dried; the solute in the acidic surfactant solution comprises acid and a cationic surfactant; s4, adsorption treatment is conducted, specifically, the stainless steel pipe obtained after acid treatment is soaked in an adsorption solution containing graphene oxide for 4-10 min, and the stainless steel pipe is taken out and dried; and S5, anti-corrosion coating treatment is conducted, specifically, anti-corrosion coating is sprayed to the surface of the stainless steel pipe fitting blank, drying is conducted, and the high-performance anti-corrosion stainless steel pipe fitting is obtained. The method has the advantage that the anti-corrosion performance of the organic anti-corrosion coating can be improved.

The invention discloses a strong acid and alkali resistant plastic material for fume hood surface decoration and a preparation method of the strong acid and alkali resistant plastic material, belongs to the technical field of plastic material processing, and aims at solving the technical problem that in the prior art, the acid and alkali resistance and the bending modulus of a plastic material for fume hood surface decoration need to be further improved. The preparation method specifically comprises the following steps: stirring amino-modified fluorosilicone resin, paraformaldehyde and 1, 4-dioxane in a reaction kettle, dropwise adding an anacardol solution, heating the reaction kettle to 85-95 DEG C, carrying out heat preservation reaction for 6-8 hours, and carrying out post-treatment to obtain the anacardol-based benzoxazine resin. Perfluoro-modified polysiloxane benzoxazine is prepared, naphthalene-containing epoxy resin and imidazole-modified silicon carbide microspheres are compounded, in-situ catalysis synergistic curing is carried out by using filler interface imidazole, a compact organic-inorganic hybrid interpenetrating network is constructed, and the strong acid and alkali corrosion resistance and bending modulus of the material are remarkably improved.

This invention discloses a weather-resistant, high-hardness composite anti-corrosion coating and its preparation method, belonging to the field of anti-corrosion coating technology. The preparation method includes: firstly, synthesizing an epoxy resin containing dynamic disulfide bonds by reacting dithiodibenzoic acid and epichlorohydrin in an alkaline aqueous phase; secondly, constructing a low surface energy siloxane network using hydroxyl-terminated polydimethylsiloxane and methyltriethoxysilane; subsequently, introducing chlorzoxazone and N-acetyl-p-aminophenol as composite organic corrosion inhibitors, blending them with the resin to obtain a composite base material; finally, adding graphene, carbon nanotubes, and inorganic anti-corrosion fillers, and cross-linking and curing to form a film using a polyamine curing agent. This invention suppresses microcracks through the dynamic stress relief of disulfide bonds, combined with the weather-resistant barrier of the siloxane network, the active interface passivation of the heteroatom corrosion inhibitor, and the three-dimensional synergistic mechanical bonding of carbon-based nanomaterials, achieving a perfect unity of ultra-strong corrosion resistance, excellent weather resistance, and high mechanical hardness in the coating.

This invention discloses an aqueous dispersion of a polyhydroxyalkanoate-grafted ethylene-acrylic acid copolymer with a self-emulsifying core-shell structure, its preparation method, and its recyclable paper packaging, belonging to the field of reactive modification of polymer materials and green packaging technology. This invention employs in-situ reactive extrusion technology to construct stable microparticles with a hydrophobic polyhydroxyalkanoate core and a hydrophilic ethylene-acrylic acid copolymer salt as the shell, overcoming the industry challenge of poor compatibility of bio-based materials. The aqueous dispersion requires no external emulsifier, achieving the same excellent barrier and heat-sealing effects with a lower coating weight, significantly reducing usage costs. Its unique alkali-induced swelling mechanism endows the coating with intelligent peeling properties, achieving efficient separation of the coating and fiber during resizing, greatly improving the purity of recycled fibers.

This invention relates to the application of electromagnetic shielding composite materials, specifically to an electromagnetic shielding composite film with a gradient structure and its preparation method. Using a polymer film as the core layer, electromagnetic functional layers are sequentially deposited on both sides of the polymer core layer, and a carbon fiber felt is composited on at least one side, resulting in an electromagnetic shielding composite film with excellent electromagnetic shielding performance. The gradient multilayer structure design of this invention utilizes the principles of impedance mismatch at different interfaces and the skin effect to effectively improve the multiple reflections of electromagnetic waves between different functional layers. Furthermore, the type of polymer core layer can be changed according to different needs; using a polymer-based high-barrier film as the core layer can yield a high-barrier electromagnetic shielding packaging film that combines high barrier properties with high electromagnetic shielding.

The present application relates to the technical field of new energy power battery thermal management materials, in particular to a co-extrusion film material for aerogel thermal insulation pad packaging, and discloses a co-extrusion film, a preparation process and application in new energy batteries, wherein the co-extrusion film is prepared from high-performance master batches through a co-extrusion blow molding process, the high-performance master batches are composed of seven-vinyl POSS single-grafted nylon 6 resin, modified expanded vermiculite with octadecenyl and DOPO groups on the surface, and dicumyl peroxide initiator, under the action of the dicumyl peroxide initiator, the vinyl on the POSS cage structure of the seven-vinyl POSS single-grafted nylon 6 resin and the octadecenyl on the surface of the modified expanded vermiculite occur free radical reaction to obtain the high-performance master batches. Through the synergistic modification strategy of double grafting and crosslinking, the present application realizes the synergistic improvement of flame retardation, heat resistance, barrier property and mechanical property, and solves the technical bottlenecks of aerogel packaging materials in high-temperature failure, weak interface bonding and processing performance deterioration.

The application discloses a kind of cyanobacterial polysaccharide and PVA composite material preparation method, comprising the following steps: S1: PVA and cyanobacterial polysaccharide are dissolved in deionized water to obtain premixed solution;S2: crosslinking agent ethylene glycol diglycidyl ether is added to the premixed solution prepared in step S1 and heated to react, to obtain mixed solution;S3: tannic acid is added dropwise to the mixed solution prepared in step S2 to obtain film forming liquid, and the film forming liquid is laid flat and dried to obtain a cyanobacterial polysaccharide and PVA composite film.The application forms a crosslinked network structure by PVA, cyanobacterial polysaccharide and ethylene glycol diglycidyl ether through ring-opening reaction, while meeting biocompatibility and mechanical properties, it can greatly improve the barrier property of the material, and can be used as functional packaging film, fresh-keeping adsorption gasket, etc. for fresh fruits and vegetables, livestock and poultry meat food storage and transportation.

The invention discloses a dihydromyricetin enhanced gutta-percha / polylactic acid composite active packaging film and a preparation method thereof. According to the film, gutta-percha and polylactic acid are used as base materials, raspberry tea dihydromyricetin is used as an active component, and synergistic improvement of mechanical properties and biological activity is achieved. The specific preparation method comprises the following steps: dissolving gutta-percha in a first organic solvent to prepare a solution A; polylactic acid and a plasticizer are dissolved in a second organic solvent to prepare a solution B; and mixing the solution A and the solution B, adding dihydromyricetin, carrying out a stirring reaction, and carrying out film casting. The obtained film is faint yellow and semitransparent, the thickness is 30-40 microns, the tensile strength is larger than or equal to 33 MPa, the elongation at break is larger than or equal to 280%, and the good water vapor and oxygen barrier property is achieved. Benefited from the addition of dihydromyricetin, the film has remarkable bacteriostatic activity on escherichia coli and staphylococcus aureus, the DPPH free radical scavenging rate can reach 92.6%, the comprehensive performance is remarkably superior to that of a gutta-percha / polylactic acid composite film, and the gutta-percha / polylactic acid composite film has important application potential in the field of active packaging of food and agricultural products.

The invention discloses a production method of a PA / PE high-barrier composite film bag. The composite film bag comprises an outer layer, a middle layer and an inner layer, the outer layer is prepared from PA6, glass fibers, maleic anhydride grafted polyethylene, an antioxidant, a slipping agent, an ultraviolet light absorber, titanium dioxide, nano silicon dioxide and polyimide; the middle layer is prepared from EVOH (Ethylene Vinyl Alcohol), polyamide-imide, nano montmorillonite, maleic anhydride grafted polypropylene, an antioxidant, a slipping agent, terpene resin, polyvinylidene chloride and polybutylene terephthalate; the inner layer is prepared from HDPE, LLDPE, mPE, an antistatic agent, silicon dioxide, dioctyl phthalate, an antibacterial agent and polylactic acid. The composite film bag prepared by the invention not only has high barrier property and good strength, but also has various functions.

The application relates to the technical field of packaging materials, in particular to a high-strength flame-retardant packaging material and a preparation method thereof. According to weight parts, the packaging material comprises the following raw materials: 70-90 parts of polylactic acid, 6-12 parts of polybutylene adipate terephthalate, 4-15 parts of a flame retardant, 3-7 parts of modified montmorillonite, 3-5 parts of maleic anhydride grafted polypropylene, 0.3-0.5 parts of an antioxidant and 0.5-1 part of a lubricant. The packaging material has excellent flame-retardant performance, bacteriostatic performance, barrier performance and mechanical performance.

The utility model provides an anti-counterfeiting packaging film which comprises an AL film, an OPP film, a VC film, a false anti-counterfeiting mark, a covering anti-counterfeiting piece and an anti-counterfeiting two-dimensional code, the AL film, the OPP film and the VC film are compounded together, and the false anti-counterfeiting mark is printed on the OPP film; an anti-counterfeiting two-dimensional code is arranged on the AL film, and the AL film is compounded with the covering anti-counterfeiting sheet; according to the utility model, the AL film, the OPP film and the VC film are compounded, so that the composite film has protection and mechanical properties; the anti-counterfeiting mark and the anti-counterfeiting two-dimensional code are arranged in a staggered manner, and dynamic anti-counterfeiting of the thermosensitive covering anti-counterfeiting piece is matched, so that the anti-counterfeiting reliability and concealment are improved, and the anti-counterfeiting device is not easy to counterfeit.

The utility model relates to a portable teaching dance pad which comprises a silica gel pad, an air bag, a fixing frame, an elastic folding plate and a traction rope. The air bags are arranged in the upper surface of the silica gel pad in a linear array; the fixing frames are fixedly connected to the front end and the rear end of the silica gel pad respectively and are symmetrical to each other. The elastic folding plate is arranged below the silica gel pad, and the two ends of the elastic folding plate are fixedly connected with the fixing frames on the two sides correspondingly. The traction rope is arranged between the lower portions of the fixing frames on the two sides, one end of the traction rope is fixedly connected with the fixing frame on one side, and the other end of the traction rope penetrates out of the fixing frame on the other side. According to the utility model, under the cooperative use of the elastic folding plate and the traction rope, not only can the dance pad be conveniently folded by a student, but also the dance pad can be quickly unfolded, and the portability of the dance pad can be effectively improved.

The utility model relates to the technical field of flow meters, and discloses an anti-interference signal shielding shell of a vortex shedding flow meter, which comprises two shell bodies which are oppositely arranged to form a square box shape, two end walls of the shell bodies are provided with pipe grooves which can be butted to form pipe holes, connecting edges are fixedly arranged at the edges of the opposite surfaces, and the connecting edges are fixed through a plurality of screws. The shell is composed of a stainless steel shell on the outer side and a copper shell on the inner side. And the supporting legs are detachably arranged below the shell. The vortex shedding flowmeter has the advantages that the vortex shedding flowmeter has a good signal shielding protection effect, and output data errors are prevented.

The application discloses a liquid storage bottle and a preparation method thereof. The liquid storage bottle comprises a bottle body and a composite anti-permeation film. The bottle body comprises a bottle opening for the egress and ingress of an atomization substrate. The composite anti-permeation film is at least annularly arranged and fixed to the inner wall of the bottle opening. The composite anti-permeation film comprises an organic layer arranged in close contact with the bottle body and an inorganic layer arranged away from the bottle body. That is, the composite anti-permeation film is annularly arranged at the inner wall of the bottle opening of the liquid storage bottle. The inorganic layer of the composite anti-permeation film can isolate the contact between the bottle opening and the atomization substrate, so that the bottle opening, as a stress concentration area, is not prone to stress cracking induced by the swelling and chemical corrosion of the atomization substrate. The composite anti-permeation film can realize targeted protection of the bottle opening, can maintain the transparency and aesthetic appearance of the bottle body, can ensure the long-term sealing reliability of the bottle opening, and can effectively improve the fact that the existing liquid storage bottle cannot simultaneously have excellent transparent appearance and high barrier property and oil corrosion resistance.

The invention discloses a hot-coated high-barrier heavy-wrapping roll film and a preparation method thereof. Belongs to the technical field of packaging materials. The roll film sequentially comprises an outer-layer base material film, a middle barrier layer and an inner-layer heat sealing film. The middle barrier layer is formed by drying and curing nano-composite barrier liquid coated on the inner surface of the outer-layer base material film; the nano-composite barrier liquid comprises polyvinyl alcohol, a surface-modified inorganic nano-material dispersion liquid, a polymer emulsion, a cross-linking agent and a wetting agent. After being preheated, the barrier liquid is coated by micro gravure, is dried through three stages of rapid shaping, deep crosslinking and high-temperature densification in sequence, and is finally compounded with an inner-layer heat-sealing film in a solvent-free manner. Through precise coupling of a synergistic effect among specific components and a multi-stage drying process, the roll film has excellent initial oxygen barrier property, water vapor barrier property, excellent stability in a high-temperature and high-humidity environment and high barrier stability after simulating a dynamic mechanical load of heavy packaging and transportation.

The present application relates to a kind of biodegradable dark color mulch and its preparation method, and dark color mulch is made of cellulose, hemicellulose and degradable coating.The manufacturing method includes the preparation of dark color mulch substrate, coating layer coating.It specifically includes slurry compounding, beating, additive addition, is formed by papermaking, dehydration, pre-drying, coating, sizing, drying, calendering, product after drying.The local film has good wet strength, light resistance, weather resistance, heat preservation and entropy increasing effect.The results of farmland degradation experiment show that the mulch can be biodegraded after 50~60 days, and the biodegradation rate is more than 90%.

The invention relates to the field of composite soft plastic packaging, in particular to a dynamic self-repairing type high-toughness bio-based degradable film and a preparation method and application thereof. The film is composed of a lactic acid high polymer, a copolymer of butylene adipate and butylene terephthalate, a compatibilizer, a nucleating agent, a catalyst, an auxiliary agent and an antibacterial agent, the catalyst is formed by mixing a main catalyst and a co-catalyst, the main catalyst comprises any one of zinc acetylacetonate, ferric acetylacetonate, antimony trioxide and zinc oxide, and the co-catalyst comprises any one of zinc acetylacetonate, ferric acetylacetonate, antimony trioxide and zinc oxide. The cocatalyst is selected from any one of triethylamine, triphenylphosphine and aluminum acetylacetonate. The invention provides an effective scheme for solving the core contradiction that the strength, toughness, repairability and controllable degradability of a bio-based material are difficult to consider at the same time, is expected to replace traditional plastics in the fields of high-end environment-friendly packaging, intelligent agricultural mulching films and the like, and has great environmental benefits and industrialization prospects.

The utility model relates to the technical field of insulation board, and disclose a composite shock attenuation insulation board with good sound insulation function, including shock attenuation layer, the outside of shock attenuation layer is provided with base layer, the outside of base layer is provided with thermal insulation layer, the outside of thermal insulation layer is provided with protective layer, shock attenuation layer includes elastic keel and embedded bone body, embedded bone body sets up in the both sides of elastic keel, the base layer includes panel, sound absorption hole and sound absorption groove, sound absorption hole sets up in the inside of panel, sound absorption groove sets up in the outside of panel. Through shock attenuation layer adopts rubber elastic keel and glass fiber reinforced polyurethane embedded bone body's composite structure, utilizes "flexible keel + rigid bone body's " damping effect, can reduce vibration transmission efficiency, the low frequency vibration inhibition effect is remarkable, the high density fibreboard of base layer combines the inside sound absorption hole with the outside sound absorption groove, forms "resonance-scattering" broadband sound absorption system.

The invention relates to the technical field of electrochromic materials and glass preparation, in particular to a preparation method of sandwich type all-solid-state inorganic electrochromic glass which is formed by sequentially compounding a tempered glass layer, a film layer and an electrochromic film layer pile. The thickness of the tempered glass layer is 4 mm, and the film layer is a PVB film and is 0.76 mm thick. The electrochromic film layer stack takes sodium-calcium non-tempered glass with the thickness of 3mm as a substrate, and an anti-ion diffusion layer, a first conductive layer, a first resistive layer, a negative electrode color changing layer, a second resistive layer, a positive electrode color changing layer, a third resistive layer, a second conductive layer and an outermost protective layer are sequentially arranged on the surface of the substrate from inside to outside; the anti-ion diffusion layer is a silicon dioxide layer, and the thickness is 200 nm. According to the preparation method of the sandwich type all-solid-state inorganic electrochromic glass provided by the invention, through precise design of each film layer structure of the glass and gradient optimization of a preparation process, the comprehensive performance of a product is synergistically improved, and many problems in the prior art are effectively solved.

The invention relates to the technical field of building waterproof composite materials, in particular to an organic silicon modified resin building waterproof composite material and a preparation method thereof. Comprising a waterproof roll and a waterproof coating arranged on the surface of the waterproof roll, the waterproof coating is prepared from the following components in parts by weight: 20 to 32 parts of silane modified polyether, 15 to 30 parts of organic silicon modified resin, 5 to 10 parts of polysaccharide-based composite polylactic acid, 8 to 12 parts of plasticizer, 1 to 3 parts of curing agent, 0.5 to 2 parts of titanium dioxide and 0.5 to 3 parts of water removal agent. An organic silicon structure in the prepared waterproof composite material has the characteristic of low surface energy, so that the surface of a coating presents strong hydrophobicity, and liquid water permeation is effectively blocked; the waterproof coating can be matched with a compact cross-linked network structure to form a continuous and seamless waterproof film, realizes high hydrostatic pressure resistance and low water absorption, and is suitable for key waterproof parts such as roofs, basements and toilets.

This application discloses a wide-bandgap perovskite solar cell based on fullerene derivatives, a tandem solar cell, and a method for fabricating the same, belonging to the field of perovskite solar cell technology. A wide-bandgap perovskite solar cell based on fullerene derivatives includes a conductive substrate, a first hole transport layer, a self-assembled monolayer, a wide-bandgap perovskite light-absorbing layer, a fullerene derivative electron transport layer, a first electron modification layer, and a first metal electrode layer, sequentially stacked. The molecular formula of the wide-bandgap perovskite is FA. 0.5‑1.0 Cs 0.1‑ 0.3 PbI 1.5‑2.0 Br 1.0‑1.5 The fullerene derivative is 5'-Phenyl-5'. H -[5,6]fullereno-C 60 - I h -[1,9:2',3']pyrido[3,2- b [indole. Through the synergistic effect of electron transport, defect passivation, and thin film stability enhancement, the optoelectronic performance and long-term operational stability of wide-bandgap perovskite and all-perovskite stacked devices are significantly improved.]

The utility model provides a kind of baking device for mung bean cake processing, it is related to baking device technical field, the utility model includes furnace body, the bottom of furnace body is equipped with support, the top of furnace body one side is equipped with cover by hinged rotary mounting, the inner wall of furnace body is equipped with inner bag, the inside of inner bag is provided with cleaning device, the cleaning device is slid by being equipped with two collecting hoppers at the bottom of inner bag to clean and collect pie crust of the bottom of inner bag, the utility model is equipped with two collecting hoppers, two collecting hoppers in the process of being mutually close, pie crust will be driven, so that pie residue gradually occurs aggregation, when the side of two collecting hoppers mutually abuts, then all pie residue is gathered in the inside of two collections, more convenient to the pie residue for fast cleaning, it is favorable to prevent pie residue to remain in inner bag and constantly bake and lead to pie residue gelatinization, further favorably prevent gelatinized pie crust from affecting the quality of mung bean cake.

This utility model discloses a lightweight coated grille, relating to the field of automotive grille technology. It includes a metal mesh substrate, with a composite coating applied to the outer side of the metal mesh substrate. The composite coating is sequentially configured as a primer layer, a core layer, a transition layer, and a top layer. The primer layer comprises a conversion layer and a protective layer, with the inner side of the conversion layer and the outer side of the protective layer contacting the outer side of the metal mesh substrate and the inner side of the core layer, respectively. The conversion layer is a nano-zirconium-based conversion agent coating, the protective layer is a graphene-containing epoxy zinc-rich primer coating, and the core layer is a hollow ceramic microparticle-modified polyurethane coating. The outer side of the core layer contacts the inner side of the transition layer, and the outer side of the transition layer contacts the inner side of the top layer. This lightweight coated grille, based on an aluminum / magnesium alloy substrate and a multi-layer synergistic coating design, achieves comprehensive performance improvements in long-term corrosion resistance, environmental tolerance, thermal and acoustic management, and surface self-maintenance while maintaining extreme lightweight properties.

The application belongs to the technical field of bio-based packaging materials, and particularly relates to a novel double-layer composite film and application thereof. The novel double-layer composite film comprises the following steps: reacting palmitic anhydride and carboxymethyl cellulose to obtain carboxymethyl cellulose palmitate; adding a pH-sensitive natural dye indicator to obtain carboxymethyl cellulose palmitate nanoemulsion containing a pH-sensitive substance; then loading a natural polymer material to prepare a film material; finally adding the film material to the carboxymethyl cellulose palmitate to prepare a composite film, thereby obtaining the novel double-layer composite film. The double-layer composite film can be self-emulsified without adding a surfactant, and has the ability to load functional indicator (pH-sensitive color indicator) substances; meanwhile, the barrier performance of the film material, such as a chitosan film, to water vapor and oxygen is improved, and the double-layer composite film has a very promising application in food or fruit preservation. The method provided by the application is not only green in raw materials, but also uses a flow casting method, which can be applied to industrial production and has a good application prospect.

The application provides a high-barrier PBAT-based biodegradable film and a preparation method thereof. The preparation method comprises the following steps: melt blending a powdered high-barrier biodegradable polyester and PBAT to obtain a blend and performing film blowing to obtain the high-barrier PBAT-based biodegradable film; wherein the temperature of melt blending is lower than the melting temperature of the high-barrier biodegradable polyester and higher than the melting temperature of the PBAT; during the film blowing process, the temperature of the melt conveying zone is lower than the melting temperature of the high-barrier biodegradable polyester and higher than the melting temperature of the PBAT; and the temperature of the die lip zone is higher than the melting temperature of the high-barrier biodegradable polyester. The preparation method can prepare the PBAT-based biodegradable film with good barrier performance under the condition of a lower content of the high-barrier biodegradable polyester.

This invention relates to the field of lithium battery packaging materials technology, and discloses a flexible packaging film for battery cells and its preparation process. The flexible packaging film comprises a protective outer layer, a first adhesive layer, an aluminum foil layer, a second adhesive layer, and a heat-sealing inner layer stacked sequentially, wherein a corrosion-resistant bonding layer is disposed between the aluminum foil layer and the second adhesive layer. The corrosion-resistant bonding layer is formed by curing and cross-linking a coating liquid containing a surface-functionalized graphene oxide-supported nano-layered zirconium phosphate composite on the surface of the aluminum foil. The heat-sealing inner layer is a multilayer co-extruded functional polypropylene film layer comprising an adhesive transition layer, a support layer, and a heat-sealing layer. By constructing a corrosion-resistant bonding layer at the aluminum foil interface and optimizing the multilayer structural design of the heat-sealing inner layer, the stability of the aluminum-plastic composite interface, the heat-sealing reliability, and the overall mechanical compatibility can be improved, thereby improving the comprehensive performance of the flexible packaging film for battery cells under high temperature, high humidity, and electrolyte contact conditions, making it suitable for the packaging of power batteries and energy storage batteries.

The application provides an encapsulation adhesive film composition for a copper grid photovoltaic cell, an encapsulation adhesive film and a preparation method thereof, a copper grid line and a photovoltaic cell, and relates to the field of photovoltaics. The raw materials of the encapsulation adhesive film composition for the copper grid photovoltaic cell include, in parts by weight: 100 parts of a base resin, 1-2 parts of an ultraviolet resistance agent, 0.2-1.5 parts of an initiator, 0.2-1.5 parts of a co-crosslinking agent, 0.1-0.5 parts of an adhesion promoter, 0.1-0.5 parts of a light stabilizer, 0.5-3 parts of a nano barrier material, 0.1-1 parts of a metal passivation agent, 0.2-2.5 parts of an antioxidant, and 2-10 parts of an organic solvent. The antioxidant includes benzotriazole and phosphite. By compounding the antioxidant, the nano barrier material and the passivation agent, the oxidation and electrochemical corrosion of the copper grid line are inhibited, and the water and oxygen barrier performance of the adhesive film is improved.

The present application relates to the technical field of chemical product processing, in particular to a low-gloss polyacrylate resin composition, a preparation method and application thereof, which comprises a modified polyacrylate resin solution, an epoxy-siloxane modifier, a vinyl trimethoxysilane oligomer, an organic metal catalyst, a viscosity regulator and a polymerization inhibitor; the ester bond in the modified polyacrylate resin is fixedly protected by the epoxy-siloxane modifier, and the ability of the epoxy-siloxane modifier is further enhanced by the vinyl trimethoxysilane oligomer, so that the problem that the gloss of the extinction type polyacrylate resin containing a bulky side group is irreversibly increased due to ester bond hydrolysis in a hot and humid environment is solved.

The paper diaper with the soft leakage-proof partition edges comprises a body, the body comprises a liquid-permeable surface layer, an absorption part and a liquid-tight bottom layer, the leakage-proof partition edges extending in the longitudinal direction are symmetrically arranged on the skin side of the liquid-permeable surface layer, each leakage-proof partition edge comprises a leakage-proof partition edge non-woven fabric and a soft non-woven fabric, and the soft non-woven fabric is compounded on the leakage-proof partition edge non-woven fabric, so that the leakage-proof partition edges are made of non-woven fabric. The soft non-woven fabric covers the rubber root part of the non-woven fabric of the leakage-proof partition edge, so that the softness of the whole leakage-proof partition edge is improved, meanwhile, multi-layer material protection is formed, the liquid blocking capacity is improved, and the urine leakage risk is reduced.

This invention relates to the field of tunnel disaster prevention and rescue technology, and in particular to a folding airbag device and its method of use for sealing off smoke from train fires in tunnels. The device includes a train consisting of a driver's cab and multiple carriages, and several identical folding airbag devices. These devices are arranged sequentially at intervals from the first to the last end of the carriages and are all fixed to the top of the carriages. In the event of a fire, the folding airbag device of this invention effectively seals off smoke, creating an effective isolation layer and increasing evacuation time for passengers in carriages that have not yet caught fire. It has the advantages of rapid response and high smoke blocking efficiency, effectively extending the available safe evacuation time for passengers in carriages that have not yet caught fire, reducing the harm of fire smoke to passengers, and improving the safety and reliability of trains in railway tunnel fire accidents.