792results about How to "High visible light transmittance" patented technology

Building-integrated photovoltaic devices can be provided, which function as sensors, wherein the output parameters from the device are used to provide information about light intensity and ambient temperature, in addition to providing power, to an intelligent building energy management system.

The invention provides a silver nanowire-based transparent conductive thin film and a preparation method thereof. The preparation method is characterized by comprising the following steps of: forming a uniform adhesive layer on a substrate by organic polymer fluid; and forming a silver nanowire conductive layer on the adhesive layer, wherein silver nanowires can be firmly adhered to the adhesive layer. Through the adhesive layer, the firmness and the reliability of the silver nanowire transparent conductive thin film are greatly improved, the problem of easiness of falling of the silver nanowires is solved, and the selection range of the substrate is expanded. If the adhesive layer is formed by polyvinyl alcohol on a polymethyl methacrylate (PMMA) substrate, the visible light transmittance reaches 84 percent when square resistance is 130.

To provide a near-IR absorption compound free from antimony or arsenic and excellent in stability, especially, in heat resistance, light fastness, and moisture-and-heat resistance and also an IR absorption filter, an optical information recording medium, and a resin composition excellent in durability by using the near-IR absorption compound. The near-IR absorption compound is a diimmonium compound having the following structure and the resin composition contains the diimmonium compound: (wherein R1 to R8 independently denote hydrogen atom or an optionally substituted aliphatic hydrocarbon group; R9 and R10 independently denote an aliphatic hydrocarbon group optionally containing a halogen atom; and rings A and B may further have substituent groups.).

The invention relates to an alicyclic-containing polyimide film. The molecular structure general formula of the film is the right formula, wherein, -CA- is a bivalence connection group of an alicyclic dibasic primary amine, -Ar- is a bivalence connection group of an aromatic dibasic primary amine, and -R- is a bivalence connection group of an aromatic dibasic estolide. The preparation thereof includes: the alicyclic dibasic primary amine and the aromatic dibasic primary amine are dissolved in non-proton organic solvent with strong polarity, the aromatic dibasic estolide is added, the non-proton organic solvent with strong polarity is used for regulating the viscosity of the alicyclic-containing polyamic acid resin solution after reaction for 1-3 hours, forming is carried out in a curtain coating machine, and dehydration fever imidization, cooling and demoulding are carried out so as to obtain the film. The preparation method has mild reaction condition and low cost and is environmentally friendly; and meanwhile, the alicyclic-containing polyimide film has excellent mechanic property and heat resistant property and low water absorption, and the visible light transmission thereof is as high as more than 97%. The film has good application prospect in the fields of optical waveguide material, photorefractive material and photoelectric material in optical communication field and direct action membrane material in the liquid crystal display field and the like.

The invention relates to a full aromatic fluorine containing transparent polyimide film. Structural formula of molecule thereof is shown above, wherein -R1 is a divalent residue of fluorine containing aromatic binary primary amine, and -R2 is a divalent connecting group of aromatic binary anhydride molecule. The preparation method thereof comprises steps of adding the fluorine containing aromatic binary primary amine and strongly polar non-protonic organic solvent into a polymerizing bottle, stirring at room temperature, after being completely dissolved, adding the aromatic binary anhydride, stirring, after 3 hours reaction, obtaining transparent and thick fluorine containing aromatic polyamide acid resin solution having homogeneous phase; and using the strongly polar non-protonic organic solvent to regulate viscosity of the fluorine containing aromatic polyamide acid resin solution, forming film, heating, carrying out dehydrating hot-imidization reaction, cooling, demoulding, thus obtaining the full aromatic fluorine containing transparent polyimide film. The preparation method has mild reaction condition, simple operation and low cost and is environment friendly. The full aromatic fluorine containing transparent polyimide film has excellent mechanical property and heat tolerance and visible light transmission thereof is up to 95%.

The invention related to a polyimide film with high visible light permeability, molecular structure formula of which is: (shown in figure). Preparation comprises steps of: dissolving primary diamine in a strongly polarnon-proton solvent, cooling the same by cold water to 5 DEG. C to 10 DEG. C, adding aromatic dianhydride, mixing, reacting 4h to 10h at 5 DEG. C to 10 DEG. C, acquiring homogeneous, transparent, sticky polyamic acid resin solution; wherein mol number of aromatic dianhydride is equal to that of primary diamine; adjusting viscosity of polyamic acid resin solution by N,N-dimethyl acetamide, forming film in a casting machine, heating to raise temperature, processing dehydration heat imidization, cooling, deciduating to acquire homogeneous and transparent polyimide thin film. The preparation method has mild reaction condition, sample to operate, low in cost and environmental friendly; mechanical property and thermal stability of the polyimide thin film are excellent with high visible light permeability reaching 94% and film thickness 50 micrometers.

The present invention discloses a multilayer dielectric optical structure wherein one of the optical materials in the multilayer structure shows an optically isotropic state above and a birefringent state below a characteristic temperature Tc near the room temperature. The optical structure reflects a predetermined wavelength range of electromagnetic radiation above the Tc but allow the same to transmit through below the Tc. The predetermined wavelength can be the near infrared radiation from 700 nm to 2500 nm, and the optical structure rejects solar heat in warm summer days but admits the same to interior on a colder winter day.

The invention discloses a transparent conducting thin film and a preparation method thereof. The transparent conducting thin film is located on a transparent substrate and comprises a graphene sheet and a silver nanowire, the transparent conducting thin film is a combined layer formed by a graphene sheet layer and a silver nanowire layer, or the transparent conducting thin film is formed by blending the graphene sheet and the silver nanowire. The transparent conducting thin film and the preparation method thereof have the advantages that the visible light transmittance is high, the square resistance is low, the complexity of the preparation process is reduced, and the production cost is lowered.

The invention relates to a solar cell packaging EVA adhesive film capable of resisting heat, humidity, ultraviolet light and aging, which comprises the following materials by weight portions: 100 portions of copolymer of ethylene vinyl acetate, 0.8-1.4 portions of crosslink curing agent, 0.05-0.15 portion of crosslink curing accelerator, 0.2-0.6 portion of tackifier, 0.1-0.5 portion of antioxidant, 0.05-0.25 portion of ultraviolet light stabilizer and 0.1-0.3 portion of ultraviolet light absorbent, wherein the crosslink curing agent is tert butyl peroxy 2-ethyl hexyl carbonate; the crosslink curing accelerator is triallyl isocyanurate; the tackifier is r-glycidyl ether oxy-propylltrimethoxysilane; the antioxidant is one or two selected from the group consisting of bis(2,4-dicumylphenyl)pentaerythritol diphosphite, distearyl pentaerythritol diphosphite, tris(nonyl phenyl)phosphate and tris(2,4-butylphenyl)phosphate; and ultraviolet light absorbent is gas phase silicon dioxide. The solar cell packaging EVA adhesive film can resist high temperature of 85 DEG C, humidity of 85 percent, ultraviolet light and thermal oxidative aging.

The invention relates to a transparent EVA heat insulating material and a preparation method thereof. The preparation method comprises the following steps of: uniformly mixing 100 parts of heat insulating modifying agent and 1.0 to 5.0 parts of silane coupling agent to prepare a heat insulating modifying agent after surface treatment; uniformly mixing 100 parts of ethylene-vinyl acetate copolymer, 0.2 to 1.5 parts of crosslinking curing agent, 0 to 0.3 part of antioxidant and 1 to 15 parts of the heat insulating modifying agent after the surface treatment; and controlling the temperature to be between 70 and 110 DEG C, and performing blending and extrusion on a prepared mixture by using an extruder to obtain a transparent EVA granular material. The EVA granular material can be directly used as a hot melt adhesive for a heat insulating device, and can be used for manufacturing a heat insulating laminated glass intermediate film. The EVA rubber film can ensure that laminated glass has high heat insulating properties and keeps high adhesive strength and transparency.

Powdered fluorescent material excited by visible light that emits visible light has particles with particle sizes of 20 μm or less in the content of below 2% by mass. The method for manufacturing a powdered fluorescent material comprises the steps of: sintering raw material powder of the fluorescent material; and chemically processing the sintered powder after said sintering with acid solution.

Silica aerogels that are controlled in pore diameter and pore diameter distribution can be produced as follows: a surfactant is dissolved in an acidic aqueous solution; a silicon compound having a hydrolysable functional group and a hydrophobic functional group is added thereto, so that a hydrolysis reaction is carried out to yield a gel; and after the gel is solidified, the gel is dried supercritically. Preferably, the surfactant is one selected from the group consisting of a nonionic surfactant, a cationic surfactant, and an anionic surfactant, or a mixture of at least two of them. The silica aerogels produced as described above are usable for heat insulators for solar-heat collector panels or heat-insulating window materials for housing.

The invention relates to a self-cleaning, antibacterial and anti-fog film. The self-cleaning, antibacterial and anti-fog film is prepared by acidizing TiO2 nano-particle powder, adding a surfactant, a stabilizer, an acid and the like, preparing, and concentrating to obtain TiO2 nano-particle slurry, adequately mixing the slurry with an organic high-molecular polymer and auxiliaries, and drying to obtain master batches; and commonly plasticizing, extruding and calendaring the master batches to prepare the self-cleaning, antibacterial and anti-fog film, wherein the constituents of the film comprise 72.89-92.34 wt% of the organic high-molecular polymer, 0.5-22.63 wt% of TiO2 nano particles and 3.36-23.45 wt% of auxiliaries. The film has a high visible light transmittance, self-cleaning, antibacterial and anti-fog functions, reflection and control effects on ultraviolet light rays and far-infrared light rays, antistatic property and anti-electromagnetic radiation property; the film is prepared with no need of high vacuum and high-temperature heating, simple and practicable equipment, and low cost; the film can be compounded with pressure-sensitive adhesive and heat-sensitive adhesive, used as the films of building glass, and the windows of vehicles and ships for improving the self-cleaning, antibacterial and anti-fog functions of the building glass and the windows, and used for performing transformation and large-area field construction on the installed glass and windows.

A glass composition for glass fiber comprises, by mass percentage in terms of oxide, 60 to 75% SiO2, 0 to 10% Al2O3, 0 to 20% B2O3, 5 to 15% Li2O+Na2O+K2O, 0 to 10% MgO+CaO+SrO+BaO+ZnO, 0 to 10% TiO2 and 0 to 10% Zr02. A glass fiber consists of the above glass composition for glass fiber. A process for producing a glass fiber comprises the steps of melting the above glass composition in a heat-resistant vessel and continuously drawing out the molten glass through a heat-resistant nozzle so as to form a glass fiber; coating the surface thereof with a chemical; and continuously reeling the coated glass fiber. A composite material is obtained by compositing the glass fiber with an organic resin.

A wire grid polarizer capable of increasing a visible light transmittance and a fabrication method thereof. The wire grid polarizer comprises a substrate having a first surface and a second surface, a plurality of metallic wires formed on the first surface, and grating patterns formed on the second surface and having a grating period shorter than a half of a wavelength of an incident light beam.

A near infrared screening film which consists of a biaxially oriented film made from a polyester containing a near infrared light absorber having a weight reduction start temperature of at least 280° C. and which has a haze value of 5% or less and a total transmittance for visible lights having a wavelength of 400 to 650 nm of 40% or more and which is exemplified by having optical properties at visible and near infrared ranges which satisfy the following expressions (1) to (4):1<T(850)<20  (1)1<T(950)<20  (2)−10<T(620)−T(540)<10  (3)−10<T(450)−T(540)<10  (4)wherein T(450), T(540), T(620), T(850) and T(950) are light transmittances at wavelengths of 450 nm, 540 nm, 620 nm, 850 nm and 950 nm, respectively.This film is inexpensive, has high handling ease, a high visible light transmittance and the function of preventing the malfunction of peripheral equipment caused by near infrared lights from the screen of a plasma display, for example, and can be suitably used in the front panel of the plasma display.

The invention discloses an ultraviolet curing nano transparent heat-insulation composite coating belonging to the field of ultraviolet curing coatings and containing the following substances in percentage by weight: 30-75 percent of oilopolymer, 0.01-15 percent of photosensitive curing agent and 10-55 percent of activated monomer, as well as 0.1-15 percent of stannic oxide. The transparent heat-insulation coating can be prepared in 1 minute under ultraviolet irradiation at room temperature, and the curing speed is high and the cost is low. The coating has selectivity to a solar spectrum, and a coating film which is about 5-70 micrometers is formed on the material surface. When the coating is used for glass, the visible light transmissivity of the glass is still higher than 75 percent, and the infrared thermal screening factor is higher than 70 percent, thereby not only keeping the transparency of the original glass, but also effectively isolating the infrared thermal radiation of sunlight. The coating has good ageing resistance, contamination resistance, anti-static performance, anti-dazzle performance, radiation protection, quick curing, environmental protection and the like.

The invention relates to an insulating mould coating, a laminated glass intermediate film, a piece of heat-protecting glass and a piece of laminated glass thereof. The transparent insulating mould coating is prepared by dissolving a thermal plastic macromolecule resin into a solvent, then adding a nanometer material body sizing agent and other auxiliary agents and stirring the mixture evenly. Theinsulating mould coating can be coated on glass and transparent resin film materials, and has very strong bonding strength, and refraction coefficients similar to that of the glass and the laminated glass intermediate film; and the insulating laminated glass prepared by using the insulating mould coating has the characteristics of high visible light transmittance, infrared ray shielding, heat insulation, ultraviolet ageing resistance and the like. The insulating mould coating is simple to prepare, needs no large-scale equipment, and is favorable for popularization.

The invention belongs to the technical field of photoelectric functional nano-materials, and particularly relates to a flexible transparent conductive oxide nanofiber membrane and a preparation method thereof. A precursor is composed of salt of a metallic oxide, salt of a doped element, an adhesive and a solvent, the precursor is sprayed on a substrate through electrospining equipment, and then high-temperature calcination is carried out to obtain the flexible transparent conductive oxide nanofiber membrane. The flexible transparent conductive oxide nanofiber membrane prepared with the method has flexibility, high conductivity and high visible-light permeability; no flexible substrate material is needed, and use of the flexible transparent conductive oxide nanofiber membrane is facilitated; the flexible transparent conductive oxide nanofiber membrane prepared with the electrostatic spinning method is controllable in size, high in repeatability, simple in process, high in efficiency and low in cost, and industrial preparation can be achieved.

A woven or knit fabric comprising air-jet interlacing spun yarns comprising polyester fibers of low titanium oxide content; a woven or knit fabric comprising air-jet interlacing spun yarns comprising polyester staple fibers obtained by graft polymerization of a hydrophilic compound; a woven or knit fabric comprising air-jet interlacing spun yarns comprising side by side crimped staple fibers; a woven or knit fabric comprising air-jet interlacing spun yarns comprising low-shrinkage staple fibers and copolymerized polyester staple fibers; and a process for producing these. A woven or knit fabric of polyester staple fibers that is bulky, excelling in moisture retention, lightweightness, water absorptivity, quick dryability, etc. and exhibits excellent anti-pilling properties can be obtained.

The invention discloses an organic / inorganic hybrid transparent heat-insulating coating material. The coating material comprises the following raw materials by mass: 45 to 85 parts of a UV light-cured resin, 5 to 50 parts of a nanometer heat-insulating particle dispersion liquid and 1 to 4 parts of an auxiliary agent. The invention also discloses a preparation method for the coating material. The preparation method comprises the following steps: (1) preparation of the nanometer heat-insulating particle dispersion liquid; (2) preparation of a nanometer modified sol; (3) preparation of the organic / inorganic hybrid UV-cured resin; and (4) preparation of the hybrid transparent heat-insulating coating material: a step of preparing the raw materials according to above-mentioned mass proportions, adding the raw materials into a reaction vessel and carrying out high speed dispersion so as to obtain the coating material. The invention further discloses application of the coating material. The coating material is applicable to heat insulation and protection in the aspects of energy-saving electric light sources, photoelectric materials, energy-saving windows, solar cells, etc. According to the invention, through addition of a functional heat-insulating particle into an organic / inorganic hybrid resin system, an obtained transparent heat-insulating coating has high visible light transmittance and a substantial effect on obstruction of infrared and near infrared heat radiation.

Low emissivity coated panels can be fabricated using a base layer having a low refractive index layer on a high refractive index layer. The low refractive index layer can have refractive index less than 1.5, and can include MgF2, CaF2, SiO2, or BO. The high refractive index layer can have refractive index greater than 2.3, and can include TiOx, NbOx, or BiOx. The multilayer base structure can allow color tuning with enhanced transmission, for example, as compared to similar structures having single layer base layer.

The invention belongs to the technical field of a functional nanometer material, and particularly relates to a preparation method of a core-shell structural high-transparency low-radiation heat-insulating composite nanometer coating. The method comprises the following steps: (1) adding and mixing a surface active agent and inorganic semiconductor particles in a solvent, and preparing core layer inorganic semiconductor nanometer particles by means of high-speed ball milling; (2) dispersing a modified core layer, a shell layer precursor and an ammonia water solution in an alcohol solvent, and performing high-speed ball milling to obtain a core-shell structural nanometer material powder body; (3) roasting to obtain a core-shell structural composite nanometer material; (4) dispersing the core-shell structural composite nanometer material in an organic solvent, and mechanically stirring to obtain a dispersion liquid of the composite nanometer material; (5) mixing the dispersion liquid with organic resin, a flatting agent and a defoaming agent, and mechanically stirring to obtain the high-transparency low-radiation heat-insulating composite nanometer coating. The high-transparency low-radiation heat-insulating composite nanometer coating can be used for coating glass and plastic surfaces by means of spray coating, brush coating, roller coating and the like, and has the effects of high transparency, low radiation and heat insulation.

The invention discloses a sunshine polyvinyl butyral nanocomposite for blocking the sun's radiation and method for preparing the same. Modified Al-doped nanometer zinc oxide, polyvinyl butyral, plasticizer and anti-oxidant are dispersed in the dispersant and poured into the mold to be compounded into the nanocomposite, wherein the weight ratio of Al-doped nanometer zinc oxide to polyvinyl butyral is (0.01-10):50. The nanocomposite compounded of AZO and PVB effectively has the advantages of good processing property, high ultraviolet and near-infrared rejection and visible light transmission, low cost, friendly environment and non toxicity, thus is widely applied in the fields of buildings, automobiles and aviation.

There is provided an interlayer film for laminated glass which is capable of effectively enhancing heat shielding properties and enhancing visible light transmittance. The interlayer film for laminated glass according to the present invention comprises a thermoplastic resin, tin-doped indium oxide particles, tungsten oxide particles and at least one kind of compound among a phthalocyanine compound, a naphthalocyanine compound and an anthracyanine compound.

The invention discloses a transparent thermal-insulation coating containing silicon oxide aerogel and a preparation method of the coating. The transparent thermal-insulation coating containing silicon oxide aerogel is characterized by mainly comprising transparent resin and aerogel powder. The preparation method of the transparent thermal-insulation coating containing silicon oxide aerogel comprises the steps as follows: (1) modification of aerogel powder; (2) surface coating of the aerogel powder in step (1); (3) mixing and stirring of the aerogel powder in step (2) and waterborne transparent resin. The transparent thermal-insulation coating containing silicon oxide aerogel has high visible light transmittance and low heat conduction coefficient, the preparation process of the coating is simple, and the coating is practical, excellent in performance, low in price and suitable for industrial production.

The invention provides a high transparency type toughened double-silver low-e coated glass, which is characterized in that: the coated glass comprises in sequence: a glass substrate, a bottom dielectric layer, a first barrier layer, a first functional layer, a second barrier layer, an intermediate dielectric layer, a third barrier layer, a second functional layer, a fourth barrier layer, and a top dielectric layer, wherein the bottom dielectric layer and the top dielectric layer are Si3N4 layers; the first, second, third and fourth barrier layers are a ZnO layer or an AZO layer or an NiCrOx layer; the first functional layer and the second functional layer are Ag layers; the intermediate dielectric layer is a ZnSnO3 layer or a combination layer of Si3N4 and ZnSnO3. The high transparency type toughened double-silver low-e coated glass uses a novel architecture membrane system, and has the advantages that: (1) the product is high in visible light transmittance, Tr>=80; (2) data drift is small before being toughened and after being toughened, the product has good and stable mechanical properties; and (3) the product has appearance color close to natural color and is true, beautiful and comfortable.

A method for producing an alkylsiloxane aerogel of the invention includes (a) a step of letting a reaction to produce a sol and a reaction to convert the sol to a gel take place in one step by adding a silicon compound whose molecules have a hydrolysable functional group and a nonhydrolysable functional group to an acidic aqueous solution containing a surfactant, and (b) a step of drying the gel produced in the step (a). In the step (b), the gel is dried at a temperature and a pressure below the critical point of a solvent used to dry the gel.

There is provided an amorphous transparent conductive thin film with a low resistivity, a low absolute value for the internal stress of the film, and a high transmittance in the visible light range, an oxide sintered body for manufacturing the amorphous transparent conductive thin film, and a sputtering target obtained therefrom. An oxide sintered body is obtained by: preparing In2O3 powder, WO3 powder, and ZnO powder with an average grain size of less than 1 mum so that tungsten is at a W / In atomic number ratio of 0.004 to 0.023, and zinc is at a Zn / In atomic number ratio of 0.004 to 0.100; mixing the prepared powder for 10 to 30 hours; granulating the obtained mixed powder until the average grain size is 20 to 150 mum; molding the obtained granulated powder by a cold isostatic press with a pressure of 2 to 5 ton / cm2, and sintering the obtained compact at 1200 to 1500 degree.C. for 10 to 40 hours in an atmosphere where oxygen is introduced into the atmosphere of the sinter furnace at a rate of 50 to 250 liters / min per 0.1 m3 furnace volume.

The invention relates to a method for directly preparing a metal oxide / silver nanowire composite conductive network, belongs to the technical field of transparent conductive thin films and anti-static coating layers, and aims to solve the technical problem that the technology for preparing a silver nanowire / inorganic metal oxide composite conductive thin film by two steps in the prior art is complicated. The method comprises the following steps: preparing a soluble metal oxide precursor solution; mixing the prepared metal oxide precursor solution with dispersion liquid of a silver nanowire to obtain soluble metal oxide / silver nanowire mixing dispersion liquid, and forming a film on the upper surface of a substrate by a wet processing technology; finally performing high-temperature annealing, ultraviolet ozone irradiation or oxygen plasma treatment to obtain the metal oxide / silver nanowire composite conductive network. According to the method, the metal oxide / silver nanowire composite conductive network is prepared in one step, so that the preparation technology is greatly simplified, and the production cost is reduced; the prepared composite conductive network is high in mechanical strength, higher in visible light transmittance and lower in square resistivity.