893 results about "Oxygen barrier" patented technology

The invention relates to the technical field of data processing, and discloses an anti-oxidation barrier layer performance degradation prediction method and system based on multi-source data. The method comprises the following steps: collecting and preprocessing multivariate data of a barrier layer environment, and constructing three-dimensional tensor data; indexes such as oxygen blocking efficiency and anti-permeability performance are calculated, and performance time sequence data are obtained; extracting multi-dimensional features and fusing the multi-dimensional features through an automatic encoder; applying a hybrid deep learning model to predict performance degradation; analyzing degradation curve characteristics, and executing mode clustering to obtain a risk matrix; and optimizing a maintenance decision scheme based on risk assessment. According to the invention, the hybrid deep learning model is utilized to capture the dependency relationship of time and space dimensions at the same time, and the prediction precision is significantly improved; based on degradation mode identification and risk level evaluation, accurate multi-scene maintenance decision is realized, environmental risk is reduced, and maintenance cost is optimized.

The invention belongs to the technical field of packaging adhesive films for photovoltaic modules, and particularly relates to a water-blocking and oxygen-blocking adhesive film for photovoltaic module packaging and a preparation method of the water-blocking and oxygen-blocking adhesive film for photovoltaic module packaging, and the water-blocking and oxygen-blocking adhesive film comprises a water-blocking layer and an oxygen-blocking layer which are adjacent to each other through co-extrusion; wherein the waterproof layer is prepared from the following materials in parts by mass: 100 parts of grafted polyolefin resin, 0.05 to 0.5 part of alkaline nano oxide and 0.1 to 1 part of antioxidant; the oxygen barrier layer is prepared from the following materials in parts by mass: 100 parts of oxygen barrier resin, 0.1-1 part of an oxygen absorbent, 0.1-1 part of a silane coupling agent and 0.05-0.5 part of a light conversion agent; the oxygen-resistant resin comprises any one or a combination of more of PS (polystyrene), PE (polyethylene), PET (polyethylene terephthalate), PB (polybutylene), PP (polypropylene), PVC (polyvinyl chloride), PVDC (polyvinyl dichloride), PA6 (polyamide 6) and EVOH (ethylene-vinyl alcohol).

The invention discloses a preparation method of a POK and EVOH blending modified high-barrier material, which comprises the following steps: pre-drying, uniformly mixing, cooling and curing, air injection for water removal, pelletizing, secondary drying and the like to obtain the POK and EVOH modified high-barrier material, compounding the POK, EVOH and EAA according to a certain proportion to form a three-phase mixed system, and playing a synergistic effect to obtain the POK and EVOH blending modified high-barrier material. The oxygen barrier effect is improved; through the special compatilizer for POK, the compatibility of POK and the EVOH material is improved, and the mechanical property of the material is improved; the oxygen barrier effect of POK at high temperature and high humidity is basically not reduced, and the oxygen barrier effect of the whole system at high temperature and high humidity is improved; the antioxidant system improves the thermal stability of the EVOH material and the POK material during processing, and solves the problems that the materials are easy to decompose during processing and easy to yellow after being used for a long time.

The invention relates to a high-barrier antibacterial polylactic acid packaging material and a preparation method thereof, and belongs to the technical field of biodegradable packaging materials. The technical problems that a traditional polylactic acid material is insufficient in barrier property, poor in antibacterial performance and difficult to meet the packaging requirements of livestock and poultry meat, food and medicine are solved. A graphene oxide lamellar material is subjected to copper ion functionalization treatment and is bridged with tannic acid molecules through copper ions to form a nano filler, and then the filler is blended with a plasticized polylactic acid solution to prepare the membrane. The preparation method comprises the following steps: preparing a copper ion functionalized dispersion liquid from graphene oxide and copper nitrate, self-assembling the copper ion functionalized dispersion liquid and tannic acid under the condition that the pH is 8-10 to generate a nanofiller, uniformly dispersing the nanofiller, mixing the nanofiller with polylactic acid, polyethylene glycol and glycerol according to a specific mass ratio, coating to form a film, and controlling solvent volatilization conditions to obtain the high-performance packaging material. According to the method, the oxygen barrier property and the antibacterial activity of the material are remarkably improved through uniform dispersion of the nanofiller and reinforcement of a coordination network. The obtained material is suitable for packaging foods such as livestock and poultry meat.

The invention relates to the technical field of food packaging materials, in particular to a cerium dioxide nano-enzyme modified antibacterial coating and application of the cerium dioxide nano-enzyme modified antibacterial coating in food packaging. The biomimetic mineralization layer comprises the following components in percentage by weight: 35-45% of a green base material, 8-12% of dopamine modified yttrium-doped cerium dioxide nano-enzyme, 4-6% of a composite antibacterial agent, 3-4% of a natural cross-linking agent, 2-3% of a degradable plasticizer, 1-2% of a biomimetic mineralization layer precursor and the balance of deionized water, the green base material is a blend of a chitosan-polyethylene glycol graft and polylactic acid; the doping amount of Y3 in the nano enzyme is 3-4at%. The antibacterial agent is excellent and lasting in antibacterial effect, has no migration risk of the antibacterial agent, and can guarantee food safety; a green base material and a degradable plasticizer are adopted, so that natural degradation is realized, and environmental pollution is avoided; the mechanical property is good, the aging resistance is realized, and the oxygen barrier property is strong; the food packaging box is suitable for various foods, effectively prolongs the shelf life, and meets the requirement of green packaging.

The invention discloses a compostable and reslurrable mineral-based dual-scale barrier coating as well as preparation and application thereof, and belongs to the technical field of water-based and reslurrable barrier materials. In order to overcome the defects of high coating weight, large color difference or difficulty in recovery in the prior art, a compact barrier is constructed through double-scale collaborative design of interlayer intercalation of layered double hydroxides and interparticle metal micro-networks. The method has the prominent advantage that high-efficiency water-oxygen barrier better than that of a conventional scheme can be realized only by using an extremely low coating amount. Meanwhile, the coating strictly controls color difference to maintain high whiteness of the paper, has pH responsiveness, can be quickly unlapped and dispersed under an acidic condition, and is easy to re-pulp. The coating does not contain PFAS and PVDC, and unification of high barrier, high whiteness and recoverability is achieved.

The utility model belongs to the technical field of perovskite cells, and specifically relates to a packaging structure of a flexible perovskite photovoltaic assembly. According to the utility model, the first inorganic barrier layer, the second inorganic barrier layer, the organic buffer layer and the water-oxygen barrier film are adopted to package the perovskite photovoltaic module, so that the light absorption performance of the perovskite photovoltaic module is not affected, and the light absorption performance of the perovskite photovoltaic module can be improved through physical adsorption or chemical reaction. Through the synergistic effect with the first inorganic barrier layer, the second inorganic barrier layer and the organic buffer layer, the perovskite photovoltaic module can be effectively prevented from being damaged by water and oxygen, so that the service life of the perovskite photovoltaic module is prolonged; according to the perovskite photovoltaic module provided by the invention, the water-oxygen barrier film is arranged, so that the number of layers of the stacked structure of the packaging layer and the thickness of the packaging layer are reduced, the overall thickness of the perovskite photovoltaic module is further reduced, the flexibility of the perovskite photovoltaic module is improved, and meanwhile, the effect of releasing stress in the inorganic barrier layer in the stacked structure can also be achieved.

The present invention discloses a method for preparing a modified PHA composite material using a twin-screw extruder and its application. The method is carried out by in-situ melt blending of polyhydroxyalkanoate PHA, polybutylene terephthalate-adipate PBAT, polyvinyl alcohol PVOH and a chain extender in a twin-screw extruder, so that a multifunctional epoxy or isocyanate chain extender reacts with the terminal groups of PHA, PBAT and PVOH molecules to form a partially cross-linked or grafted structure, thereby achieving enhanced compatibility, improved thermal stability and significant improvement in barrier properties. Experiments have shown that the modified PHA composite material obtained by the present invention has high strength, high elongation, excellent water and oxygen barrier properties and biodegradable properties, and meets the stringent requirements for mechanical properties and barrier properties in multiple fields such as food packaging, agricultural mulch and medical consumables. The preparation method of the present invention is simple and efficient, and can be used for large-scale continuous production on existing twin-screw extrusion equipment.

The invention discloses a low-smoke-density high-temperature-resistant halogen-free special flame-retardant optical cable, which comprises a cable core, an inner sheath and a fireproof layer from inside to outside, and is characterized in that the fireproof layer comprises a fireproof layer made of a ceramic silicone rubber material; the cable core comprises optical fibers, a loose tube, a reinforcing piece and an internal flame-retardant thermal insulation layer, the reinforcing piece is located in the center of the cable core, the optical fibers are arranged in the loose tube to form an optical fiber unit and surround the reinforcing piece, the internal flame-retardant thermal insulation layer comprises water-blocking yarn and a calcined mica tape, and the space between the optical fiber unit and the reinforcing piece is filled with the water-blocking yarn. And the optical fiber units, the reinforcers and the water-blocking yarns are wound by the calcined mica tape in a multi-layer and multi-pitch manner. According to the invention, the ceramic silicone rubber material is adopted and is ceramized in a flame state or at a high temperature of more than 500 DEG C to form an oxygen barrier layer, so that a flashover phenomenon in the cable is prevented; ointment is removed from the structure, and the water-blocking yarn and the calcined mica tape are used for blocking water, so that smoke in the combustion process is reduced, and the harm to personnel is less under the condition of fire hazard.

The invention discloses an antioxidant carbon aerogel material and a preparation method thereof. The method comprises the following steps: sequentially adding a solvent, a boron-containing modifier and a silicon-containing modifier into phenolic resin for esterification reaction; sequentially curing, drying and carbonizing to obtain boron-silicon modified carbon aerogel; depositing a SiC inner coating on the boron-silicon modified carbon aerogel under the assistance of supercritical CO2; a Zr-Si ceramic oxygen barrier layer and a SiO2 sealing and filling layer are sequentially prepared through a sol-gel method, and the carbon aerogel material with the SiC-Zr / Si-SiO2 composite coating is prepared. The invention also provides the aerogel material prepared by the method, the oxidation resistance of the aerogel material is obviously improved, and the aerogel material can be used for preparing a thermal insulation material applied to the field of high-temperature thermal protection.

The utility model discloses a polyethylene insulation multilayer shielding computer cable which sequentially comprises an outer sheath, an outer shielding layer, an inner protection oxygen barrier layer, an inner shielding layer and an outer wrapping layer from outside to inside, a framework unit and four cable cores are arranged in the outer wrapping layer, the cross section of the framework unit is in a cross shape, and the cross section of the cable cores is in a cross shape. The skeleton unit comprises an annular wrapping layer and four supporting units, a cable core is arranged between every two adjacent supporting units, the skeleton unit is provided with four slots extending along the length direction of the cable, and anti-bending units are installed in the slots. The computer cable has a multi-layer shielding layer structure, so that the cable has a good shielding effect, the stable signal transmission performance of the cable is ensured, and the computer cable is suitable for special environments or application scenes with high signal transmission requirements. Through the cooperation of the skeleton unit and the anti-bending unit, the bending degree of the cable is limited, so that the cable is protected, and the cable is prevented from being excessively bent and damaged.

The invention discloses a high-barrier material based on a PET aminolysis monomer and a preparation method of the high-barrier material, and belongs to the technical field of high polymer materials. The preparation method comprises the following steps: carrying out aminolysis reaction on polyethylene glycol terephthalate (PET) to prepare a dihydric alcohol monomer containing an amido bond, and carrying out polymerization reaction on the dihydric alcohol monomer and aliphatic dibasic acid to prepare a polyesteramide (PEA) material. The prepared PEA material has excellent oxygen barrier property and toughness, the oxygen barrier property of the PEA material is obviously superior to that of a PET material, and the barrier property and mechanical property of the PEA material can be regulated and controlled by changing the length of a methylene chain segment of the aliphatic dibasic acid monomer. The aliphatic dibasic acid monomer can be derived from biomass resources, the reaction condition is mild, the process is simple, and the method is suitable for industrial large-scale production.

The invention discloses a mineral-based easily-recyclable compostable water-based barrier coating and a preparation method thereof, and belongs to the technical field of paper-based packaging materials. The coating takes water as a carrier, and is composed of a biodegradable film forming system and a designed graded lamellar mineral system composed of three minerals with different sizes and morphologies. The mineral system comprises flaky kaolin with specific morphology and size, non-asbestos grade flaky talc and fully stripped sodium montmorillonite. A mineral sheet layer forms a compact parallel spreading barrier path in a coating through a specific coating and drying curing process, and excellent water vapor and oxygen barrier, water resistance and oil resistance are realized under the low dry weight of 8-15g / m by combining with a pH value response type reversible cross-linking system. The coating system does not contain polyvinylidene chloride and perfluoroalkyl and polyfluoroalkyl substances. The paper-based material coated with the coating is easy to defibrillate and recover under the standard alkaline warm water condition, the fiber recovery rate is high, and meanwhile, the whole material meets the industrial composting requirement.

The invention belongs to the technical field of biodegradable materials, and relates to a PBAT / bamboo powder biodegradable composite master batch and a preparation method thereof, and a composite film, the composite master batch comprises the following raw materials by mass: 100 parts of PBAT, 10-30 parts of modified bamboo powder, 5-10 parts of a compatibilization grafting agent, 0.5-1 part of a retardant, 20-30 parts of a blocking agent, and 0.2-0.4 part of a chain extender; the modified bamboo powder is obtained by impregnating bamboo powder with inorganic alkali liquor and modifying with an acyl halide reagent; the compatibilization grafting agent is obtained by grafting and modifying PBAT (poly (butylene adipate-co-terephthalate)) through ultraviolet light of a grafting agent, and the grafting agent is compounded by carboxyl-containing acrylate and unsaturated fatty acid glycidyl ester according to the mass ratio of 1: (1-2). According to the invention, the bamboo powder is modified and a novel compatibilization grafting agent is introduced, so that the hydrophobicity, dispersity and compatibility with PBAT of the bamboo powder are improved, and the prepared composite film has good appearance, high water and oxygen barrier property and better mechanical properties.

Methods and apparatus for vacuum forming and subsequently applying topical coatings fiber-based food containers. The slurry includes one or more of an embedded moisture barrier, vapor barrier, and oil barrier, and the topical coating comprises one or more of a vapor barrier, a moisture barrier, an oil barrier, and an oxygen barrier. For food containers having deep sidewalls, a spray coating system includes a first nozzle for applying a full cone spray pattern to the bottom surface of the container, and a second nozzle for applying a hollow cone spray pattern to the inside surfaces of the side walls.

The invention discloses a method for improving the stability of a quantum dot optical film, which comprises the following steps of: adding scattering particles and a water repellent agent into acrylic resin to form a mixed solution, stirring, fully stirring, adding a quantum dot solution, continuously fully stirring to form quantum dot glue, and finally coating the quantum dot glue between an upper barrier film and a lower barrier film to form the quantum dot optical film. And performing UV curing to obtain the quantum dot optical film. According to the method, the water repellent agent is added in the process of mixing the quantum dots and the acrylic resin into the quantum dot glue to reduce the influence of water and oxygen on the quantum dots, and the stability of the quantum dot optical film under the high-temperature and high-humidity conditions of 85 DEG C and 85% RH can be improved; compared with a method for modifying a quantum dot material or using a barrier film with a high water and oxygen barrier rate, the method disclosed by the invention is simple and convenient to operate, low in cost and suitable for mass production of the quantum dot optical film on a large scale.

The utility model relates to the technical field of photovoltaic backboards, in particular to a coating type water-oxygen barrier photovoltaic backboard, which comprises a weather-proof layer, a first water-blocking layer, a base material, a second water-blocking layer, an oxygen-blocking layer and a water-absorbing layer which are sequentially stacked. The first waterproof layer and the second waterproof layer are made of a resin matrix and a layered silicate material; the base material is made of one or more of PET (polyethylene terephthalate), PE (polyethylene), BOPP (biaxially-oriented polypropylene) and PI (polyimide); the material of the oxygen barrier layer comprises a resin matrix and modified layered zirconium phosphate; and the water absorption layer is made of a water-absorbent resin matrix and a water absorbent. According to the coating type water-oxygen barrier photovoltaic backboard prepared by the utility model, the insulating flexible organic material and the layered inorganic material are compounded to form the coating, so that on one hand, the photovoltaic backboard has good barrier performance, and on the other hand, the backboard has good insulating performance and flexibility, is not easy to crack and is durable; and the service life of the photovoltaic backboard is greatly prolonged.

The invention relates to the technical field of food packaging, and discloses an antibacterial food packaging film which is characterized by comprising a basic packaging material, an antibacterial agent, other additives, solid moisture absorption particles and a casting polypropylene film. The basic packaging material comprises polypropylene and polyethylene. The antibacterial agent is an anionic antibacterial agent. Anhydrous calcium chloride is adopted as the solid moisture absorption particles. The other additives comprise a plasticizer and a solubilizer. The preparation method has the advantages that the preparation process flow is simple, materials and equipment used in processing are daily visible and are easy to obtain, and the cost is low; the antibacterial food packaging film prepared by the invention has good antibacterial performance and also has relatively good waterproofness and air tightness, the waterproofness and oxygen barrier property of the packaging film can be improved, and the safety performance of food is improved; the antibacterial food packaging film prepared by the invention is good in drying performance, capable of avoiding reproduction of bacteria and capable of protecting food.

The invention belongs to the technical field of photovoltaic cells, and relates to a super-flexible packaging structure of a perovskite photoelectric assembly and a packaging method and application of the super-flexible packaging structure, and the super-flexible packaging structure comprises a first packaging assembly and a second packaging assembly which are arranged on the surfaces of the two sides of a flexible module respectively; wherein the first packaging assembly comprises a cloth-based substrate, a first adhesive film and a first inorganic barrier layer which are arranged in a stacked manner; the second packaging assembly comprises a polymer film, a second adhesive film and a second inorganic barrier layer which are stacked; the first inorganic barrier layer and the second inorganic barrier layer are arranged on the surfaces of the two sides of the flexible module respectively; the flexible module is a perovskite module prepared based on a flexible conductive substrate. According to the super-flexible packaging structure provided by the invention, by virtue of a synergistic effect between the inorganic barrier layer and the adhesive film, the flexibility, the foldability and the portability of the packaging structure are remarkably improved while the water-oxygen barrier property and the weather resistance of the super-flexible packaging structure are ensured to be at an excellent level.

The invention relates to a method for producing an oxygen barrier material, comprising: providing a support layer comprising paper and a first coating, applying a second coating on the support layer by extrusion technique, thereby forming a second coating on the support layer, the second coating having a gram weight of between 5 and 50 g / m2, where the second coating is compostable and / or biodegradable in industrial compost, the first coating is made to be at least 90% biodegradable within 6 months, the polymeric material in the first coating is biodegradable, the oxygen barrier material is compostable, and the oxygen barrier material has an oxygen barrier value of less than 70 cc / m2 * day. The invention also relates to an oxygen barrier material.

The invention discloses a quantum dot diffusion plate and a preparation method thereof, and relates to the technical field of diffusion plate materials. In-mold composite four-layer co-extrusion is carried out on the high-transmittance diffusion layer, the red quantum dot layer, the green quantum dot layer and the high-fog diffusion layer to prepare the quantum dot diffusion plate, and the quantum dot layer added with the green quantum dots and the red quantum dots is used as a middle layer. Red quantum dots and green quantum dots of the quantum dot diffusion plate subjected to in-mold composite four-layer co-extrusion are located among different layers and do not interfere with each other, the red quantum dot layer and the green quantum dot layer are separated, the four-layer extrusion process is carried out, the prepared quantum dot diffusion plate is narrow in emission spectrum wave crest and high in quantum efficiency, meanwhile, the diffusion layer has low water molecule migration rate, and the quantum dot diffusion plate can be used for preparing the quantum dot diffusion plate. Therefore, the quantum dot diffusion plate has good water and oxygen barrier efficiency, and has a good water and oxygen barrier effect while having a diffusion plate function.

The utility model relates to a medium-voltage fire-resistant cable. The medium-voltage fire-resistant cable comprises a cable core and a protection unit. The cable core comprises a wire core, a first wrapping layer and a filling layer; the protection unit is arranged on the periphery of the filling layer and sequentially comprises an outer sheath, a second wrapping layer, an armor layer, a first oxygen isolation layer, a mineral fireproof layer and a second oxygen isolation layer from outside to inside. The mineral fireproof layer is filled between the first oxygen barrier layer and the second oxygen barrier layer, and the mineral fireproof layer can be decomposed under a heating condition to reduce the temperature of the cable core. The mineral fire-resistant layer does not need high-temperature vulcanization, damage to the cable core is avoided, the service life and long-term reliability of the medium-voltage fire-resistant cable are improved, the first oxygen barrier layer and the second oxygen barrier layer have fire resistance, the mineral fire-resistant layer can be decomposed under the heating condition, the cooling effect is achieved, and the service life of the medium-voltage fire-resistant cable is prolonged. The fire-resistant performance of the medium-voltage fire-resistant cable is improved through the synergistic effect of fire insulation, heat insulation and cooling.

A multilayer packaging material includes a substrate formed of a cellulosic fiber-based material. The substrate has a first major surface and a second major surface opposite the first major surface. An oxygen barrier layer is formed of a PVOH material attached to the substrate, wherein the oxygen barrier layer is an innermost layer of the multilayer packaging material and further wherein the oxygen barrier layer is heat sealable. At least one moisture barrier layer is attached to the substrate, the moisture barrier layer selected from an inner moisture barrier layer disposed intermediate the substrate and the oxygen barrier layer and an outer moisture barrier layer disposed on the second major surface of the substrate. In further aspects, a packaging article, a method for making a multilayer packaging material, and a method for packaging a product are provided.

To provide a gas barrier laminate having a gas barrier coating film excellent in oxygen barrier properties and transparency and having steam barrier properties more excellent than those of a conventional gas barrier coating film, and to provide a coating composition capable of efficiently forming the gas barrier coating film.SOLUTION: The gas barrier laminate has a gas barrier coating film on a substrate, and is characterized in that it is free from coloration derived from organic compounds such as amine compounds and carboxylic acid compounds, the content ratio (P / Zr) of Zr (Zr-kα) and P (P-kα) in fluorescent X-ray measurement of the coating film is in the range of 1.39 to 2.59, and the ratio (P2 / P1) of the peak area (P2) at 2600 to 3700 cm-1 to the peak area (P1) at 850 to 1350 cm-1 in the infrared absorption spectrum of the coating film is less than 0.772.SELECTED DRAWING: None

The invention discloses an impact-resistant and tear-resistant cable and a processing technology thereof, and belongs to the technical field of cables. The impact-resistant and tear-resistant cable sequentially comprises a conductor, an insulating layer, a multi-stage composite enhancement layer, an oxygen barrier layer and an outer protective layer from inside to outside, the conductor is formed by twisting a nickel-plated copper wire and a pure nickel wire; the insulating layer is formed by wrapping and covering a tetrafluoroethylene-perfluoroalkoxy vinyl ether copolymer; the oxygen isolation layer is formed by smearing a diamond mud oxygen isolation material; the multi-stage composite reinforcement layer is prepared by compounding carbon fibers and a bio-based polymer composite material; the outer protective layer is formed by molding and wrapping thermoplastic dynamic vulcanized rubber; the cable provided by the invention has excellent impact resistance and tear resistance.

A resin composition containing a hydrophilic resin and a metal compound, and satisfies the following expression (1) when being formed into a film:α1−β1≥1  (1)wherein α1 is an average metal atom concentration (%) in a portion of the film in a depth range of 0 to 9 nm from a film surface, and β1 is an average metal atom concentration (%) in a portion of the film in a depth range of 12 to 21 nm from the film surface. The resin composition is excellent in gas barrier property, particularly in oxygen barrier property, in a high humidity environment.

The invention relates to the technical field of barrier films, and particularly discloses an ultrahigh water and oxygen barrier film for a vehicle-mounted OLED display product. The thickness of the ultrahigh water and oxygen barrier film is 15-35 microns, and the ultrahigh water and oxygen barrier film sequentially comprises a first antistatic layer, a first barrier layer, an OLED working layer, a second barrier layer, a polyethylene glycol terephthalate layer and a second antistatic layer, the thickness ratio of the first antistatic layer to the first barrier layer to the OLED working layer to the second barrier layer to the polyethylene glycol terephthalate layer to the second antistatic layer is (2-4): (2-4): (8-16): (2-4): (4-8): (2-4). The first barrier layer and the second barrier layer are prepared from the following raw materials in parts by mass: 1-2 parts of cholesterol, 5-15 parts of phospholipid, 1-2 parts of N-acryloyl glycinamide, 1-2 parts of graphene oxide, 0.01-0.1 part of a photoinitiator, 1-2 parts of hydroxypropyl methyl cellulose, 1-5 parts of fluorinated ethylene propylene, 1-5 parts of tetra-n-butyl titanate and 1-2 parts of a surfactant.

The application discloses a mineral-based easily-recyclable compostable water-barrier coating and a preparation method thereof, and belongs to the technical field of paper-based packaging materials. The coating is formed by a biodegradable film-forming system and a hierarchical lamellar mineral system containing three different scales and morphologies. The mineral system contains specific morphology and size of lamellar kaolin, non-asbestos grade lamellar talc and fully exfoliated sodium montmorillonite. The mineral lamella forms a dense parallel spread barrier path in the coating through a specific coating and drying solidification process, and combines a pH value responsive reversible cross-linking system to achieve excellent water vapor and oxygen barrier properties, water resistance and oil resistance at a low dry weight of 8-15 g / m2. The coating system does not contain polyvinylidene chloride and perfluoro and polyfluoro alkyl substances. The paper-based material coated with the coating is easily defibered and recycled under standard alkaline warm water conditions, and the fiber recovery rate is high, and meanwhile, the whole material meets the industrial composting requirements.

The present invention is related to a solvent-based composition for preparing an oxygen barrier coating, comprising a binder polymer containing polar functional groups that are capable of interacting with an acidic group; an acid containing at least two reactive acidic groups; and an organic solvent. The present invention is furthermore related to a coated product comprising said oxygen-barrier coating layer, and to a method for making a coated product.

The invention discloses a quantum dot diffusion plate and a preparation method thereof.The quantum dot diffusion plate comprises an upper layer diffusion plate, a middle layer diffusion plate and a lower layer diffusion plate, and the upper layer diffusion plate and the lower layer diffusion plate are located on the two sides of the middle layer diffusion plate; the middle diffusion plate comprises the following components in parts by mass: PBT resin, PEI polymer microspheres, surface carboxylation oil-soluble CdSe / ZnS quantum dots, glutaraldehyde, ethanol and the like, and the quantum dot diffusion plate prepared by the invention also has the advantages of stable luminescence, high light transmittance, high mechanical strength, fatigue resistance and the like on the premise of keeping high water and oxygen barrier property and luminous efficiency; the advantages of the quantum dot diffusion plate and the PBT resin are integrated, and the application prospect is wide.