17 results about "Barrier effect" patented technology

The invention discloses a high-performance composite coating material for a port loading and unloading machine, the high-performance composite coating material comprises a primer, an intermediate paint and a finish paint, the primer, the intermediate paint and the finish paint are connected in sequence, and the primer is a zinc-aluminum-graphene composite primer; the zinc-aluminum-graphene composite primer is prepared from the following components in parts by mass: 15 to 20 parts of epoxy resin, 50 to 60 parts of zinc powder, 22 to 28 parts of flaky aluminum powder, 0.15 to 0.4 part of modified graphene, 6 to 8 parts of curing agent and 1 to 3 parts of additive. Through the mode, according to the high-performance composite coating material for the port loading and unloading machine and the spraying method of the high-performance composite coating material, through innovative component design, the cathode protection capacity, the barrier effect and the mechanical strength of a coating are synchronously improved, and meanwhile, the uniformity and integrity of the coating on the surface of a complex steel structure, especially the edge and the weld joint are ensured.

The utility model provides electronic paper and relates to the technical field of electrophoretic display. The electronic paper comprises a driving substrate, a display assembly, a water blocking mechanism and edge sealing glue. The display assembly is arranged on the upper end face of the driving substrate and comprises an ink particle layer; the water blocking mechanism comprises an anti-dazzle assembly and a water blocking assembly, the water blocking assembly is arranged between the anti-dazzle assembly and the ink particle layer, and a water blocking layer in the water blocking assembly can be bonded to the ink particle layer; the edge sealing glue and the peripheral wall of the display assembly are correspondingly coated on the driving substrate. According to the electronic paper, the barrier effect on water vapor and oxygen can be improved, and the influence of the coating effect of the edge sealing adhesive on the ink particle layer is eliminated.

The heat exchanger provided by the application has a channel for fluid flow, and the heat exchanger comprises a base body and a hydrophobic coating layer covering at least part of the surface of the base body, the hydrophobic coating layer comprises a low-surface-energy silane material and a filler dispersed in the low-surface-energy silane material, and the filler comprises at least two kinds of particles, and the shapes of the at least two kinds of particles are different. The particles of different shapes are compounded, so that the particles have a good filling effect in the hydrophobic coating layer, which is beneficial to increasing the compactness of the coating layer, increasing the barrier effect of the hydrophobic coating layer on the corrosive medium, and improving the corrosion resistance of the heat exchanger. The composite material provided by the application comprises a solvent, a low-surface-energy silane material and a filler, the filler comprises at least two kinds of particles, and the shapes of the at least two kinds of particles are different. The composite material forms a corrosion-resistant coating layer containing particles of at least two shapes, thereby improving the corrosion resistance of the heat exchanger.

The invention belongs to the technical field of corrosion prevention, and particularly relates to environment-friendly anticorrosive paint and a preparation method thereof. According to the environment-friendly anticorrosive paint provided by the invention, the corrosion inhibitor loaded by Ce-MOF can play a good barrier effect in the paint, the corrosion inhibitor can be released in time when later corrosion occurs, an active anticorrosive function is achieved, and the corrosion inhibitor can be well dispersed into the paint through L-cysteine modified boron nitride, so that the corrosion resistance of the paint is improved, and the corrosion resistance of the paint is improved. L-cysteine can reduce the rate of metal corrosion and can play a role in protection, boron nitride can play a very good barrier effect, through cooperation of the components, a very good anti-corrosion effect of the paint can be achieved, and the prepared environment-friendly anti-corrosion paint is good in anti-corrosion performance and wide in application.

The utility model discloses a critical temperature indication label, the critical temperature indication label comprises a substrate layer, an image-text layer and a barrier layer, the image-text layer is laminated above the substrate layer, the image-text layer comprises a thermosensitive area, thermosensitive components are arranged in the thermosensitive area, and the thermosensitive components can be decomposed at a predetermined temperature to release gas; and the barrier layer is arranged above the image-text layer in a stacked manner. According to the critical temperature indication label, the image-text layer is arranged between the substrate layer and the barrier layer, the image-text layer comprises the thermosensitive area, the thermosensitive area comprises the thermosensitive component, the thermosensitive component can be decomposed and release gas at the preset temperature, and under the barrier action of the substrate layer and the barrier layer, the gas cannot be diffused to the outside, so that the critical temperature indication label can be used for indicating the critical temperature. And the bubbles are gathered between the substrate layer and the barrier layer, so that the existence of the bubbles can be used for indicating whether the environment temperature is higher than the preset temperature and further indicating whether the product is deteriorated.

This invention provides a mildly exothermic light-cured gingival barrier resin composition and its preparation method. The composition comprises the following components in weight percentage: 40-65% acrylate prepolymer, 30-55% acrylate monomer, 0.1-0.3% camphorquinone, 0.1-0.2% ethyl p-dimethylaminobenzoate and coated ethyl p-dimethylaminobenzoate, 0.2-1.0% coated triethanolamine, 0.1-1.0% ammonium salt, 3-6% thickener, 0.01-0.1% stabilizer, 0.1-0.5% pigment, and 0.5-3% flavoring agent. This invention significantly reduces the curing exothermic temperature by adjusting the photoinitiator system of the light-cured gingival barrier resin product, using a CQ+EDMAB+TEOA photoinitiator system, and pre-treating the photoinitiator with coating and adding an appropriate amount of ammonium salt, thus avoiding the risk of burning the patient's gums without affecting the product's barrier effect.

The invention relates to an environment-friendly food packaging composite film as well as a preparation method and application thereof. The environment-friendly food packaging composite film comprises an outer layer, a middle layer and an inner layer which are sequentially arranged, the outer layer comprises a PE film; the middle layer comprises any one of a barrier type milky white PE film, a milky white PE film or a PE-PVA film; the inner layer comprises a PE film or an EVOH co-extrusion PE film. The opaqueness of the environment-friendly food packaging composite film is larger than or equal to 80%, the environment-friendly food packaging composite film has an excellent blocking effect on food pigments, grease and additives, component migration can be blocked, and color permeation can be shielded.

The invention relates to the technical field of packaging, and particularly discloses a preparation method of a positioning easy-to-tear high-barrier aluminum foil composite film and the composite film. The preparation method of the positioning easy-to-tear high-barrier aluminum foil composite film comprises the following steps: routing: routing the easy-to-tear lines on the PET outer layer, the easy-to-tear lines being five parallel point breaking lines and being longitudinally arranged; glue preparation: uniformly stirring and mixing the component A and the component B to obtain glue; and compounding: printing ink on the PET outer layer to obtain an ink layer, coating glue on one surface of the aluminum foil layer, compounding with the ink layer, drying, coating glue on the other surface of the aluminum foil layer, compounding with the easy-to-tear layer, drying, and finally curing to obtain the positioning easy-to-tear high-barrier aluminum foil composite film. The composite film disclosed by the invention not only has a relatively good barrier effect, but also is easy to tear.

The invention discloses an anti-sublimation PU (polyurethane) leather lettering film and a preparation method thereof, the lettering film is of a layered structure sequentially compounded from top to bottom, and each layer sequentially comprises a PET (polyethylene terephthalate) silica gel protective film, a colored PU leather layer, an anti-sublimation PU resin coating, an acrylic acid adhesive layer and a PES (polyetherimide) hot melt adhesive film layer from top to bottom; through cooperation of a specific layered structure and a precise process, the problems of color crossing and color fading of the lettering film caused by dye migration of the chemical fiber fabric are solved fundamentally, and the anti-sublimation barrier effect is stable and reliable; the agglomeration of the nano activated carbon filler is effectively avoided, the coating is compact and uniform, the pinhole defect is avoided, and the barrier property consistency is high; all the layers are tightly combined, the peeling strength is high, delaminating is not prone to occurring after water washing and high-temperature ironing, and the use durability of the product is remarkably improved; the adhesive has excellent interlayer adhesive force and dye permeation barrier property, and the hidden danger of interface permeation is eliminated.

The invention provides a composite material with high oxygen barrier property and a preparation method and application thereof, and relates to the technical field of paper function modification. The composite material comprises a paper-based material, and further comprises a first polyhydroxyalkanoate coating, a second nanocellulose coating and a third polylactic acid coating which are sequentially arranged on the paper-based material. The three coatings form a synergistic barrier system of'basic barrier-path extension-efficient protection ', and through the dual effects of physical barrier of the dense film layer and path extension of the net structure, the oxygen permeation amount is greatly reduced, and the excellent high oxygen barrier effect is achieved.

The invention relates to a quantum dot optical film and a preparation method thereof.The quantum dot optical film comprises a first diffusion particle layer, a first barrier film, a quantum dot film, a second barrier film and a second diffusion particle layer which are sequentially arranged, and the quantum dot film is formed by mixing and heating a water-soluble quantum dot solution and a polyvinyl alcohol solution; or the quantum dot film is formed by mixing composite material powder and an adhesive, wherein the preparation raw materials of the composite material powder comprise a water-soluble quantum dot solution and a polyvinyl alcohol solution. According to the quantum dot optical film provided by the invention, the quantum dot material is wrapped by the polyvinyl alcohol, high-specification protection is performed on the quantum dots by utilizing high oxygen barrier property and gas barrier property of the polyvinyl alcohol material, a multi-barrier effect is achieved, and the stability of the quantum dot material in a water-oxygen environment is improved; the preparation method is simple, the process difficulty and the manufacturing cost are reduced, the process is environment-friendly, and the method is suitable for large-scale application.

The application discloses an environment-friendly pigment and a preparation method thereof, and relates to the technical field of coatings.The environment-friendly pigment is composed of europium-gadolinium co-doped samarium oxysulfide powder, tetrabutyl titanate, gamma-methacryloyloxypropyl trimethoxysilane, cerium acetylacetone and polytetrafluoroethylene powder; the polytetrafluoroethylene and the coated and modified europium-gadolinium co-doped samarium oxysulfide powder are subjected to heat treatment, a carbon fluoride layer with excellent hydrophobicity and chemical inertia is formed on the surface of the europium-gadolinium co-doped samarium oxysulfide powder, the adsorption and retention of water vapor, oxygen, acid rain and the like on the surface of the pigment are blocked, the reaction chain required by photoaging is cut off, the ultraviolet protection and corrosion prevention barrier effect are enhanced, the Ti-O-Si hybrid shell layer is tightly combined, a double high-temperature protection system is formed, the risk that the pigment is oxidized under high temperature is reduced, and the weather resistance and corrosion resistance of the pigment are improved, and the adverse effects of illumination, high temperature and corrosion environment on the color rendering property of the pigment are effectively reduced.

The application relates to the technical field of containers and discloses a preparation method of a high-barrier container, which comprises the following preparation steps: 1) cutting a barrier film layer according to a set size; 2) placing a container body in a mold cavity of an injection molding machine, the container body being provided with an outer peripheral wall; 3) placing the barrier film layer in the mold cavity, the barrier film layer being arranged around the outer peripheral wall and being provided with an inner ring interval between the barrier film layer and the outer peripheral wall; and 4) injecting a fluid glue into the mold cavity, the glue filling the inner ring interval to form an inner film layer, and the glue covering the outer periphery of the barrier film layer. The device is placed in the mold cavity of the injection molding machine, the barrier film layer is arranged, the fluid glue is injected, the glue forms the inner film layer and an outer film layer, the inner film layer and the outer film layer clamp the barrier film layer in a facing direction, and the barrier film layer is wrapped around the outer peripheral wall of the container. The barrier film layer can have a high-barrier effect on external gas and moisture, so that the material placed in the container is highly separated from the outside, and the moisture-proof and sealing effects are achieved.

This invention relates to a rust-resistant coating, its preparation method, and its application, belonging to the field of rust-resistant coating and anti-corrosion technology. The rust-resistant coating consists of agent A and agent B in a mass ratio of (4-6):1. Agent A includes the following components by mass: 5-12 parts rust conversion agent, 5-10 parts glass flakes, 10-15 parts modified zinc phosphate, 5-15 parts ultrafine high-hardness wear-resistant filler, 50-70 parts phenolic epoxy resin, and 2-6 parts additives. Agent B includes a polyamide curing agent. The rust conversion agent generates an insoluble, dense organic-metal complex protective film; the glass flakes improve the coating's impermeability and barrier effect; and the modified zinc phosphate and other composite anti-rust pigments continuously provide corrosion-inhibiting ions within the coating. The ultrafine high-hardness wear-resistant filler withstands mechanical friction and impact, and the intrinsically tough phenolic epoxy resin matrix absorbs some of the impact energy through deformation.

According to an aspect of the present disclosure, a method for producing a multi-layer plastic may include coextruding a first laminate with a substrate layer having an HDPE content of at least 60% by volume; a barrier layer having a barrier polymer and having a thickness of at most 20% of a total thickness of the first laminate; and a connecting layer between the substrate layer and the barrier layer; stretching the coextruded first laminate in a machine direction only; and connecting a second laminate having a polyethylene content of at least 80% by volume to the barrier layer of the stretched first laminate.

The invention discloses composite surface modified titanium dioxide particles and a preparation method thereof, and relates to the technical field of titanium dioxide preparation. The preparation method comprises the following technical steps: (1) preparing slurry; (2) dissolving zirconium salt; (3) micro-channel reaction; and (4) high-speed shearing and mixing. Micro-channel reaction is combined with high-speed shearing and mixing treatment, a zirconium oxide and fumed silica composite coating layer is constructed on the surface of titanium dioxide, a compact zirconium oxide inner layer combined through chemical bonds is formed through efficient mass and heat transfer of the micro-channel reaction, surface defects are effectively filled up, and the optical performance and chemical stability are improved; the fumed silica is uniformly adsorbed to form an outer layer through high-speed shearing and mixing treatment, so that the dispersity of the titanium dioxide in an organic medium is improved, ultraviolet light, moisture and oxygen are isolated by virtue of an excellent barrier effect, and the weather resistance, the ultraviolet shielding capability and the comprehensive application performance of the product are synergistically enhanced.

This application provides a heat exchanger and its manufacturing method, as well as a thermal management system. The heat exchanger includes a metal substrate, which comprises a manifold, heat exchange tubes, and fins. The heat exchange tubes are fixed to the manifold, and the inner cavity of the heat exchange tubes communicates with the inner cavity of the manifold. The fins are located between two adjacent heat exchange tubes. The heat exchanger also has a coating, which includes a chemical conversion film layer. The chemical conversion film layer is applied to at least a portion of the surface of the metal substrate. The chemical conversion film layer includes zirconium and vanadium elements, and further includes an auxiliary agent, which includes at least one of phosphate and organometallic chelates. The composite coating on the surface of the metal substrate of the heat exchanger of this application has excellent barrier effect and uniform film thickness, which can effectively improve the corrosion resistance and service life of the heat exchanger.