159results about How to "High gas barrier" patented technology

A light-emitting device comprising an anode, one or more organic compound layers containing at least a light-emitting layer, and a transparent cathode on a flexible support substrate having a linear thermal expansion coefficient of 20 ppm/° C. or less, water permeability of 0.01 g/m<2>.day or less, and oxygen permeability of 0.01 cc/m<2>.day.atm or less. The flexible support substrate is constituted by a metal foil provided with an insulating layer on one or both surfaces thereof.

The invention discloses a high-barrier polyester film, which has a three-layer composite construction, comprising a core layer, an upper cortex and a lower cortex. The core layer comprises the following components of: 60-100 wt% of PET polyester slices, 0-40 wt% of PEN polyester slices; the cortexes comprise the following components of: 92-98 wt% of PEN polyester slices, 0.2-2 wt% of a nucleating agent and 1-6 wt% of a nucleating modifier. The invention also discloses a coextruding-drawing preparation method of the above high-barrier polyester film. The invention has a simple preparation technology; in addition to excellent physical properties, the produced polyester film has better gas barrier property, heat resistance and radiation resistance performance, and can be applied in the fields of solar energy cell back-piece and the like.

The invention discloses a making method of clay modified by silane coupling agent with butadiene styrene rubber nanometer composite material, wherein the silane coupling agent is gamma-aminotriethylene silane and di-(gamma-triethylene propyl) tetrasulfide, which comprises the following steps: making gamma-aminotriethylene silane modified clay liquid suspension under normal temperature; blending with butylbenzene rubber emulsion completely; flocculating; washing; drying; fusing; sulfurizing to obtain the product; adding di-(gamma-triethylene propyl) tetrasulfide to obtain the modified clay and butadiene styrene rubber nanometer composite material of gamma-aminotriethylene silane and di-(gamma-triethylene propyl) tetrasulfide.

The invention discloses an isolating polypropylene composite material which is prepared from the following components in terms of parts by weight: 60-80 parts of polypropylene, 20-40 parts of ethylene-vinyl alcohol copolymer and 1-10 parts of compatilizer. Meanwhile, the invention also discloses a preparation method of the isolating polypropylene composite material. The isolating polypropylene composite material has high tenacity, and the impact strength thereof is as high as 210 J/m or so. In addition, the isolating polypropylene composite material has high gas isolation capability, and water vapor permeation speed can be approximately 2000 g*um/(m<2>*24h). The isolating polypropylene composite material has both high gas isolation capability and high tenacity, therefore when the isolating polypropylene composite material is used for preparing an isolating film, a traditional film making process can be adopted, wherein the process is relatively simple and the production cost is relatively low. The isolating polypropylene composite material has a prospect for generalized application.

The invention discloses a back film for a solar module; the back film comprises an outer surface fluoride containing layer, a middle layer and an inner surface ethylene- vinyl acetate copolymer layer; the middle layer comprises a polyester layer, an ethylene-vinyl alcohol copolymer layer and a bonding layer; the middle layer is prepared by co-extruding the polyester material layer, the ethylene-vinyl alcohol copolymer layer and the bonding layer; the outer surface fluoride containing layer is a fluoride containing film compounded on the polyester layer of the middle layer or the fluoride containing coating coated on the polyester layer of the middle layer; and the inner surface ethylene- vinyl acetate copolymer layer is applied on the bonding layer of the middle layer by curtain coating. The back film of the solar module provided by the invention has the advantages of low water vapor transmission rate and high insulation performance, not only has excellent barrier and insulation performance, but also has the packaging performance.

The invention relates to a low-moisture-absorption long-term heat-resistant aging-resistant polyamide composition and a preparation method thereof. The polyamide composition is prepared from the following raw materials in percentages by weight: 20-55% of thermoplastic polyamide resin, 5-30% of semi-aromatic polyamide resin, 15-60% of glass fiber, 1-10% of a blocker, 0.1-1% of a thermal aging additive and 0.1-30% of other additives. Compared with the prior art, the semi-aromatic polymer is added into the composite system, the moisture-absorption property of a matrix can be significantly decreased due to the high steric-hindrance effect of the composite system; in addition, because of the presence of benzene rings, characteristics of good barrier property and heat resistance and retention are achieved and the polyamide composition also has the advantages of low moisture absorption, very excellent mechanical strength, heat resistance, aging resistance and the like.

The invention discloses a high-performance graphene-containing water-based acrylate coating. The high-performance graphene-containing water-based acrylate coating contains pure acrylic and/or a styrene-acrylic emulsion, titanium dioxide, calcium carbonate, a dispersing agent, a defoaming agent, a film-forming agent, a flatting agent and sulfonated graphene. The invention further discloses a method for preparing the water-based acrylate coating. Compared with an existing water-based acrylate coating, by adding a minute quantity of sulfonated grapheme into the water-based acrylate coating, the comprehensive properties of the prepared coating are substantially improved, for instance, the tensile strength is increased by 20%-60%, the elongation at break is increased by 25%-70%, the thermal conductivity is increased by 20%-100%, the water resistance is obviously improved, the electrical conductivity is improved by an order of magnitude, and the gas barrier property is increased by 10%-80%. The high-performance graphene-containing water-based acrylate coating is easy to prepare, low in cost and convenient to use and can be applied to the various fields of toughening, heat conduction, corrosion prevention and the like of the water-based acrylate coating.

The invention provides a barrier film and a vacuum insulating board compounded by utilizing the barrier film. The barrier film is formed by adhering a surface layer, a gas barrier layer and a heat seal layer, wherein the gas barrier layer consists of at least one aluminum-plated polyethylene terephthalate (PET) film layer. The preparation process of the aluminum-plated PET film comprises the following of: (1) arranging a PET substrate film in an aluminum-plating chamber for performing vacuum aluminum plating, and forming an aluminum-plating layer on the surface of the PET substrate film; and (2) introducing nitrogen into the aluminum-plating chamber in stages after aluminum plating is ended, introducing the nitrogen until the nitrogen pressure is 800-1200pa at the first time, maintaining for 8-12 hours, introducing the nitrogen until the nitrogen pressure is 1300-1500pa, maintaining for at least 12 hours, and obtaining the aluminum-plated PET film. Compared with the conventional aluminum-plated film prepared by the prior art, the aluminum-plated film has the advantages that the overall barrier performance of the barrier film can be effectively improved, so that the requirements can be met in occasions with strict barrier performance requirement.

The invention discloses a preparation method of a glycidyl methacrylate melt-grafted polyolefin material. The preparation method comprises the following steps: directly adding glycidyl methacrylate and graphene oxide onto polyolefin pellets or powder, uniformly mixing at normal temperature, and adding the physical mixture into reaction equipment; and uniformly mixing an initiator and a styrene liquid, adding the mixture into the above reaction equipment, and melt-blending at a certain temperature. The prepared glycidyl methacrylate grafted polyolefin has high grafting rate and high molecular weight or high grafting rate and low crosslinking degree.

Provided are: a zinc oxide-based transparent oxide film which has a low refractive index and good gas barrier properties; and a process for producing the same. This transparent oxide film is amorphous, and has a composition which contains, relative to the total amount of all the metal components, 0.9 to 20.0at% of Al and 25.5 to 68.0at% of Si with the balance consisting of Zn and unavoidable impurities. In this process, DC sputtering is conducted in an inert gas atmosphere that contains oxygen and/or under such conditions that the substrate is in a heated state, using a sputtering target consisting of a sintered oxide which has a composition that contains, relative to the total amount of all the metal components, 0.3 to 4.0wt% of Al and 6.0 to 14.5wt% of Si with the balance consisting of Zn and unavoidable impurities and in which both a composite oxide, Zn2SiO4, and ZnO are present in the structure.

The invention discloses a high barrier paint for a bi-oriented polyester thin film and a preparing method thereof. The high barrier paint is prepared from, by mass, 20-40 parts of acrylate copolymers,2 parts of an isocyanate cross-linking agent, 0.001-0.1 part of a nanosheet material and the balance mixed solvent. According to the high barrier paint, gas molecules pass through the nanosheet material with difficulty, and cross linking makes the paint more compact; the compact high barrier resin is mixed with the nanosheet material, so that cross linking is further conducted to make most of oxygen and water blocked on the outer side, the contact with the interior of a package is reduced, and thus the purpose of prolonging the service life of a goods shelf is achieved.

The invention discloses a preparation method of supermolecule/rubber airtight materials, in order to provide a method for improving the rubber gas barrier property by utilizing supermolecule LDHs (layered double hydroxides). The method comprises the following steps of: adding LDHs as packing into rubber, and preparing a compound of LDHs and rubber by adopting an emulsion compounded method or a mechanical alloying method. The main components comprise 100 parts of base body rubber materials and 0.2-40 part of LDHs by mass; the base body rubber materials are rubber emulsion or solid rubber; the supermolecule LDHs is adopted. The compound material with excellent gas barrier property can be obtained through filling the LDHs into rubber.

The invention provides a bag skin material and an aerostat. The bag skin material comprises a weather-proof layer, an air-blocking layer, a weight-bearing layer and a welding layer which are overlapped, wherein the air-blocking layer is organic polymer with montmorillonite dispersed. The montmorillonite is dispersed in the organic polymer to form the air-blocking layer. Due to the property that the montmorillonite is layered crystalline silicate clay ore, the air-blocking performance of the bag skin material is improved. Furthermore, leakage of air inside the aerostat or an airship is reduced, and the hang time of the aerostat or the airship is lengthened.

The invention discloses a method for preparing a high-barrier polypropylene material through phase morphology and interface crystallization regulation. The method is characterized in that a micro-nanolaminating co-extrusion device is utilized for in-situ micro-fibrillation of a high-barrier polymer containing an alpha nucleating agent in polypropylene; phase morphology regulation is organically combined with interface crystallization regulation, and a multi-layer microstructure of oriented microfibers and interlocking alpha transverse crystals is built in the polypropylene; the gas barrier property of the polypropylene is improved by using the multi-layer microstructure. According to the method, the interface structure of the high-barrier polymer and the polypropylene is optimized in an interface crystallization way under the condition without a compatilizer, and the problem is solved that in a common preparation technology, interactions between the interfaces of the high-barrier polymer and the polypropylene are weak, so that further improvement of the gas barrier property is restricted. The devices involved in the method are easy to operate, dies are easy to process, the manufacturing cost is low, continuous production is achieved, the production efficiency is high, and the method has good industrial application prospects.

The invention relates to high-barrier environmental-friendly coating lined paper and a manufacturing method thereof. The lined paper comprises following three layers: a stone paper layer, an ink layer on the surface of the stone paper layer and a high-barrier layer on the surface of the ink layer. The gram weight of the stone paper base material is 55-80 g/m2. The ink layer is a coating formed by drying aqueous soybean ink. The barrier layer is a coating formed by coating base material paper with modified polyvinyl alcohol coating and drying. The modified polyvinyl alcohol coating is prepared by polymerization of following raw materials by weight: 4-7% of polyvinyl alcohol, 5-9% of carbon nanofiber, 3-6% of citronellal, 3-7% of a catalyst, 2-7% of a defoaming agent and 70-79% of softened water. The lined paper has characteristics of excellent barrier performance, good stiffness and strength, capability of environmental protection and low production cost, and can fully replace traditional composite lined paper or aluminized lined paper.

The present invention provides an industrially advantageous method for producing an unsaturated carboxylic acid-modified vinyl alcohol polymer, and a gas barrier film obtained by using the same. In summary of the present invention, the present invention is a method for producing a solution containing at least an unsaturated carboxylic acid-modified vinyl alcohol polymer characterized by reacting a vinyl alcohol polymer and an unsaturated carboxylic acid compound in the presence of an acid catalyst soluble in the reaction system or a solid acid catalyst, and a gas barrier film obtained by using the same, and an example of a representative constitution thereof is a method for producing a solution (A) containing an unsaturated carboxylic acid-modified vinyl alcohol polymer (b), the method comprising following two steps of: (1) a reaction step in which the unsaturated carboxylic acid-modified vinyl alcohol polymer (b) is formed by reacting a vinyl alcohol polymer and an unsaturated carboxylic acid compound (a) in the presence of an acid catalyst soluble in the reaction system; and (2) an ion exchange step in which at least the acid catalyst of acidic compounds is removed by an anion exchange resin.

The invention provides a method for preparing small-fraction filling composite masterbatch through a semi-open type superheated steam spray-drying method. The technological method is used for preparing rubber nanocomposites through wet mixing and is less in energy consumption, safe and simple in technology. Rubber latex is selected and used for being mixed with filler slurry, a certain quantity of rubber auxiliary is added and stirred to be uniform, an obtained mixture is dried through a semi-open type superheated steam spray tower at a certain feed rate, the nano composite rubber masterbatch is prepared and collected and passes through a sieve plate, and blocks are formed after rolling is conducted. The method is simple in technology, complete in reaction, safe, free of hidden dangers, less in energy consumption and capable of reducing cost; human factors are few, continuous production can be achieved, the product quality is stable, industrial research is easy, and green and environmental protection is achieved. By means of the rubber masterbatch produced through the method, inorganic filler can be uniformly dispersed in a rubber matrix in a nano-scaled mode, and the rubber masterbatch can be applied to the fields such as saloon car tread rubber and engineering tread rubber.