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168results about How to "Reduce transmittance" patented technology

Light gray low-emissivity coated glass and preparation method thereof

PendingCN119638211AConducive to energy saving and emission reductionreduce manufacturing costMetal membraneSilver film
The invention discloses light gray low-emissivity coated glass for near-zero energy consumption buildings and a preparation method thereof, the light gray low-emissivity coated glass comprises a glass substrate and a composite metal film layer laminated on the glass substrate, and is coated glass with three metal silver film layers. According to the invention, one of the multiple composite metal film layers on the common colorless transparent float glass substrate reflects and interferes with light, so that the coated glass is light gray in the sun and has good decoration and energy-saving effects; the hollow glass is high in visible light transmittance, low in outdoor visible light reflectivity, low in solar energy transmittance and high in solar energy reflectivity, and can be made into hollow glass to achieve better energy-saving effects such as light control, heat insulation and the like, so that a building is closer to the nature and is fused with the nature.
Owner:FUJIAN XINFUXING GLASS CO LTD +3

Preparation method of low-radiation coated tempered glass

The invention discloses a preparation method of low-radiation coated toughened glass, which comprises the following steps: sintering a target material, carrying out moisture removal and degassing pretreatment on glass, carrying out coating treatment and toughening treatment, and laminating a composite metal film layer on a toughened glass substrate to prepare the toughened coated glass with three metal silver film layers. According to the method disclosed by the invention, after a common glass substrate is plated with the composite metal film layers, toughening treatment is carried out, and after the toughening treatment, all the metal film layers reflect, interfere and refract light, so that the glass disclosed by the invention is light green (French green) in the sun, and the decoration and energy-saving effects are good; the visible light transmittance is high, the outdoor visible light reflectivity is low, the solar energy transmittance is low, and the solar energy reflectivity is high; the prepared hollow glass has better energy-saving effects such as light control, heat insulation and heat preservation, enables buildings to be closer to the nature, is used for near-zero energy consumption buildings, and enables the buildings to meet the requirements of the national standard General Standard for Building Energy conservation and Renewable Energy Utilization.
Owner:FUJIAN XINFUXING GLASS CO LTD +3

Coating type polyolefin seven-layer co-extrusion light-conversion dustproof high-heat-preservation pesticide-resistant long-acting dripping fog-dispersal greenhouse film and preparation method thereof

The invention belongs to the technical field of agricultural film preparation, and particularly relates to a coating type polyolefin seven-layer co-extrusion light-conversion dustproof high-heat-preservation pesticide-resistant long-acting dripping fog dispersal greenhouse film and a preparation method thereof. The greenhouse film is composed of a first inner dustproof anti-aging layer, a second inner heat-preservation anti-aging dustproof storage layer, a third inner high-heat-preservation anti-aging layer, a middle light conversion layer, a third outer high-heat-preservation anti-aging layer, a second outer heat-preservation anti-aging layer, a first outer modified bonding anti-aging layer and a coating layer-long-acting dripping fog dispersal layer. The specification width of the greenhouse film is 10 m or above, the thickness is 0.12 mm-0. 22 mm, the light transmittance is 90% or above, the haze is 15% or below, the infrared transmittance is smaller than 18%, the annual attenuation rate of the light transmittance is smaller than 1.0% due to the dustproof function, the lasting period of the dripping fog dissipation function is 10 years or above, and the requirements of farmers for various performance indexes of the greenhouse film with the service life being 10 years or above can be completely met.
Owner:SHANDONG AGRICULTURAL UNIVERSITY

Super-strong barrier packaging paper and preparation method thereof

The invention provides super-strong barrier packaging paper and a preparation method thereof, relates to the field of high-barrier packaging paper, and aims to solve the problems that the barrier property of a traditional packaging material is reduced and the mechanical property is insufficient in a high-humidity environment. The packaging paper is composed of a coating barrier layer, a transparent film layer and a body paper base layer, and is prepared through a special process, so that the transmittance of oxygen and water vapor is remarkably reduced, and the shelf life of packaged contents is effectively prolonged. The preparation method comprises the following steps: mixing wood pulp fibers with a citric acid hydration solution, adding materials such as cationic starch to form fiber slurry, and drying to obtain the raw paper base layer; mixing and extruding acrylonitrile copolymer and other materials to form a transparent film layer; materials such as lignin and a citric acid hydration solution are mixed to form cross-linked slurry, the cross-linked slurry is mixed with a polymer solution to obtain a cross-linked coating, the raw paper base layer is coated with the cross-linked coating, the cross-linked coating is dried and then compounded with the transparent film layer, and the packaging paper has excellent barrier performance and mechanical performance and is particularly suitable for being used in areas with large temperature and humidity changes.
Owner:ZHONGSHAN JIACHEN IND CO LTD

Acrylic resin for water-blocking film and preparation method thereof

The invention relates to the technical field of polyester resin, in particular to acrylic resin for a water-blocking film and a preparation method of the acrylic resin. The acrylic resin is a (styrene-acrylonitrile)-b-(flexible acrylic acid-functional monomer)-c-(styrene-acrylonitrile-silane coupling agent) block polymer; the block polymer comprises the following components in parts by mass: 20-70 parts of a flexible acrylic monomer; 5 to 25 parts of acrylonitrile; 20 to 50 parts of styrene; 1-7 parts of a silane coupling agent; 2-10 parts of a functional monomer, wherein the functional monomer is used for carrying out a cross-linking reaction with the curing agent; the (styrene-acrylonitrile)-b-(flexible acrylic acid-functional monomer)-c-(styrene-acrylonitrile-silane coupling agent) triblock polymer prepared in the invention has good heat resistance and certain elasticity, is acrylic resin with good binding force with a water-blocking coating, and is used for a polymer protective layer.
Owner:JIANGSU XINCHENGRUI MATERIAL TECH CO LTD

Terahertz modulator based on aluminum and germanium antimony tellurium composite dumbbell hole array

The invention discloses a terahertz modulator based on an aluminum and germanium-antimony-tellurium composite dumbbell hole array. The terahertz modulator comprises a substrate and the aluminum and germanium-antimony-tellurium composite dumbbell hole array formed on the surface of the substrate. The aluminum and germanium-antimony-tellurium composite dumbbell hole array is characterized in that a plurality of periodically arranged dumbbell holes are etched in an aluminum thin film, and a layer of germanium-antimony-tellurium thin film covers the aluminum dumbbell hole array; a structural unit of the aluminum dumbbell hole array is composed of two round holes with the same radius and a rectangular hole, the rectangular hole is connected with the two round holes, and the depth of the round holes, the depth of the rectangular hole and the thickness of the aluminum film are the same. The terahertz modulator can dynamically adjust the transmissivity of terahertz waves through germanium-antimony-tellurium phase change. According to the aluminum and germanium-antimony-tellurium composite dumbbell hole array disclosed by the invention, a modulator can be realized in a terahertz frequency band, and dynamic adjustment on the terahertz wave transmissivity is realized by utilizing the phase change characteristic of germanium-antimony-tellurium.
Owner:CHINA JILIANG UNIV

Packaging film glue solution composition, packaging film as well as preparation method and application of packaging film

The invention provides a packaging film glue solution composition, a packaging film as well as a preparation method and application of the packaging film. The packaging film glue solution composition is prepared from the following components in parts by weight: 10 to 30 parts of organic silicon modified aliphatic polyurethane acrylate resin, 0.1 to 5 parts of UV (Ultraviolet) reactive diluent, 30 to 60 parts of epoxy resin, 2 to 12 parts of flexibilizer, 20 to 55 parts of curing agent, 0.1 to 2 parts of accelerant, 5 to 20 parts of light diffusion powder, 0.02 to 1.0 part of coupling agent and 0.05 to 0.5 part of photoinitiator, the organic silicon modified aliphatic polyurethane acrylate resin is prepared from the following raw materials: polyester glycol, carbon-terminated hydroxyl polydimethylsiloxane, a diisocyanate compound and hydroxyl acrylate; the molar ratio of the polyester diol to the carbon-terminated hydroxyl polydimethylsiloxane is (15-45): 1; the UV active diluent comprises an epoxy acrylate compound. The packaging film glue solution composition provided by the invention has good film-forming property, and a packaging film prepared from the packaging film glue solution composition is good in environmental reliability and has high filling rate when a Mini LED display module is packaged.
Owner:PRIMA OPTICAL FILM (DONGGUAN) CO LTD

Ultraviolet curing adhesive and preparation method thereof

The invention discloses an ultraviolet curing adhesive and a preparation method thereof. The ultraviolet curing adhesive comprises the following components in parts by weight: 30-40 parts of aliphatic polyurethane acrylate, 50-60 parts of a reactive diluent, 3-5 parts of a photoinitiator, 0.3-1 part of an auxiliary initiator, 1-2 parts of a coupling agent and 3-5 parts of a thixotropic agent, wherein the auxiliary initiator comprises piperyl alcohol and derivatives thereof. According to the invention, the polybutadiene polyurethane acrylate is used as main body resin, so that the adhesive has better flexibility, lower water vapor transmission rate, better insulativity and better bending resistance. Common amine co-initiators such as EDB can be used for improving surface dryness, but yellowing is generated after curing, so that the curing depth is reduced, however, the amine-free piperonol and derivatives thereof are used for replacing the amine co-initiators, yellowing is avoided after curing while the surface dryness is improved, and the original curing depth is well maintained; and relatively good surface drying and curing depth can be achieved at the same time.
Owner:SHANGHAI HANSI IND CO LTD

Coating composition, UV light conversion coating and preparation method thereof, photovoltaic cell and photovoltaic module

The present invention relates to a coating composition for forming a UV light conversion coating for a photovoltaic cell, a UV light conversion coating prepared therefrom, a method for preparing the UV light conversion coating, and a photovoltaic cell and a photovoltaic module comprising the coating. The composition comprises by mass: (A) 100 parts of a first epoxy resin that is liquid at room temperature, which is an epoxy resin containing at least two glycidyl ether groups per molecule on average; (B) 33-66 parts of a second epoxy resin that is liquid at room temperature, which is an alicyclic epoxy resin containing at least two epoxy cycloalkyl groups per molecule on average; (C) 33-66 parts of a vinyl ether monomer that is liquid at room temperature; (D) 6-16 parts of a cationic initiator; (E) 3-15 parts of a UV light conversion agent; and (F) 0-200 parts of an inert diluent. The light conversion coating prepared by the coating composition can reduce the UV band light transmittance and increase the visible light wavelength transmittance when used in a photovoltaic cell or a photovoltaic module, improve the light conversion efficiency and have excellent adhesion and aging resistance.
Owner:上海德朗聚新材料有限公司

Starch-based antibacterial slow-release intelligent film as well as preparation and application thereof

PendingCN119119593AImprove water and oil absorption rateImprove water resistanceFlexible coversWrappersGlycerolEngineering
The invention belongs to the technical field of intelligent food packaging, and particularly relates to a starch-based antibacterial slow-release intelligent film as well as preparation and application thereof, and the starch-based antibacterial slow-release intelligent film is prepared from the following raw materials in parts by weight: 3-5g of modified starch, 20% of glycerol (based on the dry weight of the modified starch), 7-11mL of pericarpium citri reticulatae essential oil Pickering emulsion and 0.5% of purple corn cob anthocyanin solution (based on the dry weight of the modified starch). The invention also provides a preparation method of the starch-based antibacterial slow-release intelligent film, and the prepared intelligent film has excellent mechanical properties, oxidation resistance, antibacterial properties and the like, can be used for detecting the freshness of pork, and has relatively high biological safety when being applied to food.
Owner:CHANGSHA UNIVERSITY OF SCIENCE AND TECHNOLOGY

Preparation process of environment-friendly degradable thermo-sensitive paper for food

The invention discloses a preparation process of environment-friendly degradable thermo-sensitive paper for food, and relates to the technical field of thermo-sensitive paper. Wood pulp and polylactic acid fibers are pulped, lignin is used for backfilling, so that interaction among the fibers is enhanced, pores of prepared paper are reduced along with improvement of the pulping degree, a matrix indirectly achieves the oil-proof effect, then the interior of the matrix is in a porous form through vacuum freeze drying treatment, and under assistance of ultrasonic waves, the oil-proof effect of the matrix is improved. A starch composite zein protein solution is introduced to realize an easy degradation effect, and alkaline protease is utilized to hydrolyze zein protein and react with glucose, so that a dried protein structure becomes compact, a flexible film layer structure is formed on the surface of a matrix, and the transmittance of water molecules and grease molecules is reduced; the easily degradable and oil-proof effects are further improved.
Owner:JIANGSU JINDA PACKAGING MATERIAL TECH CO LTD

High-flux silicon removal nanofiltration membrane and preparation process thereof

The invention discloses a high-flux silicon removal nanofiltration membrane and a preparation process, and relates to the technical field of water treatment. The invention discloses a preparation process of a high-flux silicon removal nanofiltration membrane, which comprises the following steps: mixing sulfonic acid electrolyte and a manganese chloride solution to obtain a sulfonic acid-manganese chloride solution; soaking the bottom membrane in a sulfonic acid-manganese chloride solution for multiple times, baking and curing, and generating a hydrophilic silicon removal material layer on the surface of the bottom membrane, so as to obtain the high-flux silicon removal nanofiltration membrane. The bottom membrane is obtained by coating the surface of the polypropylene non-woven fabric with the polysulfone porous material, the hydrophilic silicon removal material layer is attached to the surface of the bottom membrane, and the good silicon pollution resisting effect is achieved by means of repulsion of surface charges of the hydrophilic silicon removal material layer and silicate.
Owner:JIANGSU BANGTEC ENVIRONMENTAL SCI TECH CO LTD

Near-infrared shielding thermochromic intelligent window and preparation method thereof

The invention discloses a near-infrared shielding thermochromic intelligent window and a preparation method thereof, and belongs to the field of radiation refrigeration and intelligent windows. The problems that an existing thermochromic intelligent window is high in near infrared transmittance and low in middle and far infrared heat radiation regulation and control amplitude are solved. A near-infrared shielding thermochromic intelligent window is composed of a substrate, a hyperbolic metamaterial structure, a first oxide dielectric layer and a VO2 metasurface layer in sequence from bottom to top. The preparation method comprises the following steps: 1, cleaning the substrate; 2, preparing a hyperbolic metamaterial structure; 3, preparing a first oxide dielectric layer; and 4, preparing the VO2 metasurface layer. The thermochromic intelligent window for near-infrared shielding and the preparation method thereof are provided.
Owner:SUZHOU LABORATORY

Method for preparing tungsten oxide electrochromic film with high visible light transmittance at low temperature based on chemical bath method

The invention belongs to the technical field of electrochromic films, and discloses a method for preparing a high-visible-light-transmittance tungsten oxide electrochromic film at low temperature based on a chemical bath method.The method comprises the steps that sodium tungstate is dissolved in water to obtain a sodium tungstate solution, the sodium tungstate solution and an oxalic acid solution are added into deionized water, stirring is conducted, and then the high-visible-light-transmittance tungsten oxide electrochromic film is obtained; adding hydrochloric acid to obtain a mixed solution, immersing FTO conductive glass into the mixed solution, and carrying out ultrasonic oscillation; and heating the reaction system at 60 DEG C for reaction, and washing, drying and annealing the FTO conductive glass on which the yellow film grows to obtain the tungsten oxide electrochromic layer. According to the method, the reaction conditions are mild, growth of the precursor film is completed through low temperature and raw material matching cooperation, and the tungsten oxide electrochromic film with high light transmittance and excellent electrochromic performance is finally prepared.
Owner:JIANGSU URBAN & RURAL CONSTR VOCATIONAL COLLEGE +1

Glass with high refractive index, preparation method and application

PendingCN119430648AReduce high temperature viscosityreduce transmittancePhysical chemistryOptical transmittance
The invention relates to the technical field of optical glass manufacturing, in particular to high-refractive-index glass as well as a preparation method and application thereof. The transition metal is less than 4 ppm by mass, and the transition metal comprises one or more of Fe, Cr, Ni, Cu, Mn, Co and V; the oxide is prepared from the following components in mole percent based on the oxide: 17 mol% to 49 mol% of Bi2O3, 2.7 mol% to 15.7 mol% of Nb2O5, 8.5 mol% to 39 mol% of TeO2, 2 mol% to 19.5 mol% of P2O5, 11.3 mol% to 41 mol% of B2O3, 0 mol% to 1 mol% of TiO2, 0 mol% to 1 mol% of Ta2O5, 0 mol% to 1 mol% of WO3 and 0.5 mol% to 16.5 mol% of ZnO, and Bi2O3 / (TeO2 + TiO2 + WO3 + Nb2O5 + Bi2O3) * 100 is more than or equal to 30 and less than or equal to 75. Tests show that when the thickness of the glass is 10 mm, the refractive index of the glass is 2.09-2.35, and the transmittance of the glass with the wavelength lambda 70 smaller than 450 nm is 82.4%-96.8%. The problems that in the prior art, high-refractive-index glass is low in refractive index and light transmittance and low in performance and cost ratio, and the increasingly-developed visual experience and development requirements of head-mounted displays cannot be met are solved.
Owner:CAIHONG GRP SHAOYANG SPECIAL GLASS CO LTD +1

Submerged dike oscillation water column type anti-wave power generation device

The invention relates to the field of offshore engineering, and particularly discloses a submerged embankment oscillation water column type anti-wave power generation device which comprises a power generation device body and an L-shaped submerged embankment, the power generation device body comprises an air chamber and an air turbine, the air chamber is a square hollow column, an opening is formed in the bottom end of the air chamber, and an air hole is formed in the top end of the air chamber; the air turbine is arranged in the air hole and converts pneumatic energy flowing through the air hole into electric energy; the air chamber is fixed on the offshore platform, the air hole is formed above the sea surface, the opening is formed below the sea surface, and seawater forms a water column in the air chamber; the L-shaped submerged dike is arranged below the air chamber, the horizontal edge of the L-shaped submerged dike is horizontally placed on the seabed, and the vertical edge of the L-shaped submerged dike is vertical to the seabed and located on the side close to the rear wall of the air chamber. By the adoption of the oscillating water column wave energy power generation device, the wave prevention performance of the device in the full wave period is remarkably enhanced, the coast is effectively protected against erosion, and the energy conversion efficiency of the oscillating water column wave energy power generation device in the long wave period can be improved by means of the characteristic that the submerged breakwater reflects waves.
Owner:SUN YAT SEN UNIV

Transparent ultraviolet-proof composite film as well as preparation method and application thereof

The invention belongs to the technical field of thin film materials, and particularly relates to a transparent ultraviolet-proof composite film as well as a preparation method and application thereof. The transparent ultraviolet-proof composite film provided by the invention is prepared from the following raw materials: acetylated lignin, a halloysite nano material, chitosan and polyvinyl alcohol, the acetylated lignin is loaded on the halloysite nano material. The specific transparent ultraviolet-proof composite film disclosed by the invention has high transparency on the basis of ensuring that the passing rate of ultraviolet light with the wavelength of 200-400nm is less than 5%, the passing rate of visible light with the wavelength of 400-780nm reaches more than 60%, and meanwhile, the transparent ultraviolet-proof composite film also has high mechanical property, is capable of blocking moisture and oxygen, is good in biological safety and is degradable.
Owner:ZHEJIANG ACADEMY OF AGRICULTURE SCIENCES

Micro-LED with collimation metasurface structure and preparation method thereof

ActiveCN119277869AIncreased interferencehigh strengthRefractive indexTransmittance
The invention belongs to the technical field of Micro-LEDs, and relates to a Micro-LED with a collimation metasurface structure and a preparation method of the Micro-LED. The Micro-LED comprises a Micro-LED light emitting structure and a collimation metasurface structure, wherein the collimation metasurface structure is arranged on the Micro-LED light emitting structure The collimation metasurface structure is arranged on one side of a light-emitting surface of the Micro-LED light-emitting structure and is used for carrying out collimation filtering on light emitted by the Micro-LED light-emitting structure, so that the angle of the emergent light of the Micro-LED is smaller than a set angle; wherein the collimation metasurface structure comprises a first dielectric layer and a second dielectric layer, the first dielectric layer is arranged on the Micro-LED light-emitting structure, the first dielectric layer comprises a plurality of first collimation cylinders, and a groove is formed between every two adjacent first collimation cylinders; the second dielectric layer is arranged at the bottom of the groove and the top of the first collimation cylinder; the refractive index of the first dielectric layer is smaller than that of the second dielectric layer. By adopting the scheme, the intensity and transmissivity of normal incident light can be improved, the intensity and transmissivity of oblique incident light can be reduced, the collimation effect of light can be realized, and the luminous efficiency can be improved.
Owner:JIANGSU INST OF ADVANCED SEMICON CO LTD

A multi-physical barrier function temperature change light modulation PVC film and a preparation method thereof

The application belongs to the field of polyvinyl chloride functional film materials, and particularly relates to a temperature-variable light-adjusting PVC film with multiple physical barrier functions and a preparation method. The PVC film comprises a PVC continuous phase, temperature-variable light-adjusting functional particles dispersed in the PVC continuous phase, lamellar barrier fillers arranged in the direction of the film surface, and an interface compatible locking component. The temperature-variable light-adjusting functional particles and the lamellar barrier fillers form a spatial coupling structure in the PVC continuous phase, the lamellar barrier fillers constitute in-plane oriented labyrinth diffusion channels, and the interface compatible locking component forms an interface bridging layer between the PVC continuous phase, the temperature-variable light-adjusting functional particles and the lamellar barrier fillers. The application realizes the cooperation of temperature response optical adjustment, lamellar labyrinth barrier and interface migration locking, so that the film material can produce changes in visible light transmittance, haze, color and / or near-infrared transmittance when the temperature changes, and the transmittance or migration of water vapor, oxygen and plasticizers is reduced.
Owner:SHANDONG AGRI & ENG UNIV

Method of manufacturing a membrane assembly

A method for manufacturing a diaphragm assembly for EUV lithography, the method comprising: providing a stack comprising: at least one diaphragm layer supported by a planar substrate wherein the planar substrate comprises an inner region and a boundary region surrounding the inner region; the first sacrificial layer is positioned between the planar substrate and the diaphragm layer; selectively removing the interior region of the planar substrate, wherein the step of selectively removing the interior region of the planar substrate includes using an etchant having a similar etch rate for the diaphragm layer and its oxide and a substantially different etch rate for the first sacrificial layer; the diaphragm assembly includes: a diaphragm formed from the at least one diaphragm layer; and a boundary portion that holds the diaphragm, the boundary portion including the boundary region of the planar substrate and the first sacrificial layer between the boundary portion and the diaphragm layer.
Owner:ASML NETHERLANDS BV

Light sensation touch screen structure

The utility model discloses a light sensation touch screen structure which is characterized in that a light sensation receiving area is arranged at the top of an OGS touch screen, ambient light can be better detected, the light sensation receiving area is not prone to being blocked in use, a light sensation IC is arranged on the lower surface of a glass substrate of the light sensation receiving area, and the light sensation IC is electrically connected with an FPC through edge metal wires. The backlight brightness is adjusted according to the intensity of external light, and finally the effect of adjusting the screen brightness is achieved. And the semi-transparent black toughened glass is adopted, so that the transmittance of the visual area is reduced, and when the screen is not lightened, the integrated black effect of the edge and the visual area is better, so that the product competitiveness of the OGS touch screen is improved, and the ever-increasing quality requirements of enterprises are met.
Owner:TRULY OPTO ELECTRONICS

Unidirectional easy-to-tear composite packaging film as well as preparation method and application thereof

The invention discloses a unidirectional easy-to-tear composite packaging film as well as a preparation method and application thereof, and belongs to the technical field of packaging films. The unidirectional easy-to-tear composite packaging film comprises an outer layer, a middle layer and an inner layer which are sequentially stacked, the outer layer is prepared from the following raw materials: low-density polyethylene, high-density polyethylene, metallocene polyethylene, metallocene polypropylene, polyether polyamine and dibenzoyl peroxide; the middle layer is prepared from the following raw materials: low-density polyethylene, high-density polyethylene and ultra-high molecular weight polyethylene; the inner layer is prepared from the following raw materials: carboxylated graphene oxide, aminated multi-walled carbon nanotubes, organic montmorillonite, protonated polypropylene imine, low-density polyethylene and high-density polyethylene. The packaging film prepared by the invention not only has easy-to-tear performance, but also has storage stability, high-temperature resistance, low-temperature resistance and good mechanical performance, the comprehensive performance of the packaging film is excellent, and the application range of the packaging film is expanded.
Owner:JIANGSU LEATER GREEN PACKAGING CORP LTD

Method for growing bismuth-doped rare earth iron garnet crystal by guided-mode pulling-top seed crystal method and application of bismuth-doped rare earth iron garnet crystal

The invention relates to a method for growing a bismuth-doped rare earth iron garnet BRIG crystal by adopting a guided-mode pulling-top seed crystal method and application of the bismuth-doped rare earth iron garnet BRIG crystal. The invention aims to solve the problems of large internal stress, many defects and difficulty in preparation of a single-crystal thick film in BRIG crystal growth by a liquid phase epitaxy method at present; in order to solve the problems of long growth cycle, difficult seed crystal acquisition and the like of a top seed crystal method in the prior art, the invention combines the rapid growth of crystals by a guided mode pulling method and the high-quality single crystal growth by the top seed crystal method, and the guided mode pulling-top seed crystal method is invented to realize the rapid growth of the high-quality BRIG single crystal. The method comprises the following steps: firstly, rapidly growing a large-size rare-earth-doped iron garnet crystal which is high in BRIG crystal lattice adaptation degree and relatively close to BRIG in components by adopting a guided-mode pulling method, cutting the large-size rare-earth-doped iron garnet crystal into seed crystals of more than centimeter level, and rapidly growing a high-quality BRIG blocky single crystal by adopting a TSSG method. The crystal grown by the method has the advantages of small internal stress, less cracking, good uniformity, fast crystal growth and the like, and has obvious advantages in high-performance magneto-optical isolators.
Owner:FUJIAN ZHIZHUO PHOTOELECTRIC TECH CO LTD

High-strength flame-retardant packaging material and method for producing the same

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.
Owner:SHANGHAI RUITU NEW MATERIALS TECH CO LTD

Polarizing plate and image display device

Provided is a polarizing plate in which the decrease in transmittance in a high-temperature environment is suppressed. Provided is a polarizing plate having a polarizing element in which a dichroic dye is adsorbed to a polyvinyl alcohol-based resin layer and oriented, and a transparent protective film laminated to at least one face of the polarizing element, the polarizing element and the transparent protective film being bonded via an adhesive layer formed by an adhesive containing an ammonium ion donor, the water content of the polarizing element being equal to or higher than the equilibrium water content at a temperature of 20°C and a relative humidity of 30% and equal to or lower than the equilibrium water content at a temperature of 20°C and a relative humidity of 50%.
Owner:SUMITOMO CHEM CO LTD

A modified layered nanoclay sheet / polyurethane composite coating and a method for preparing the same

The application discloses a modified layered nanoclay sheet / polyurethane composite coating and a preparation method thereof, and belongs to the technical field of coatings; namely, the modified layered nanoclay sheet and polyurethane are used to prepare the modified layered nanoclay sheet / polyurethane composite coating by adopting a physical crosslinking method; wherein the modified layered nanoclay sheet is prepared by sequentially performing acid activation and surface modification treatment on nanoclay. The application solves the problems of insufficient weather resistance and adhesion and poor storage stability of the existing polyurethane coating, and also reduces the cost. In addition, the modified layered nanoclay sheet / polyurethane composite coating prepared by the application has excellent corrosion resistance and mechanical properties.
Owner:GUODIAN POWER GUANGDONG NEW ENERGY DEV CO LTD +1

Multifunctional electronic moisture-proof coating composition with low dielectric constant

PendingCN122080723Alow dielectric constantMeet stringent dielectric performance requirementsCoatingsEpoxyMoisture resistance
The present invention discloses a low dielectric constant multifunctional electronic moisture-proof coating composition, and relates to the technical field of electronic materials and protective coatings, the composition comprises: a component A: 15-35% of a reaction type fluorine-silicon hybrid oligomer; the component B comprises 2%-8% of surface modified nanosheet barrier filler; the component C comprises 50%-75% of a green cosolvent system; the component D comprises 0.5%-3% of a multifunctional epoxy silane coupling agent; and the component E comprises 1%-5% of a photo-thermal dual-curing initiation system. The problems that in the prior art, the VOC emission of a fluorine-containing solvent is high, the compactness is insufficient due to filler sedimentation, and the water vapor permeability is high in a high-damp-heat environment are solved, through the quaternary synergistic effect, the low dielectric constant, high hydrophobicity, excellent moisture resistance and high adhesive force to various base materials are achieved, and the water-based paint is suitable for protection of high-frequency electronic devices.
Owner:HOSCIEN TECH TIANJIN CO LTD