127results about How to "Improve light and heat stability" patented technology

The invention relates to a full-inorganic perovskite Schottky photoelectric detector and a preparation method thereof. The detector consists of a Si/SiO2 substrate, left and right ITO electrodes and aperovskite microwire. The CsPbBr3 perovskite microwire is synthesized on the substrate in situ by adopting a two-step method, namely the CsPbBr3 perovskite microwire is obtained by firstly synthesizing a PbI2 microwire and then performing ion exchange in a CsBr methanol solution. A Schottky junction is formed by adopting the ITO electrode and perovskite, and quick and excellent ultraviolet-visible light sensitive detection performance is achieved. The microwire consists of nano-particles and has a porous structure, multiple times of scattering can be achieved, and the obtained detector has the advantages of high response, high sensitivity and quick response restoration and the like.

The invention belongs to the technical field of functional food processing, and specifically relates to a zein-lecithin-curcumin composite colloidal particle and preparation thereof. According to the alcohol solubility and self assembly characteristic of zein and lecithin, the zein-lecithin-curcumin composite colloidal particle is prepared by an anti-solvent co-precipitation method. The technology of the method is simple, and is easy to operate. The particle size distribution of the obtained zein-lecithin-curcumin composite colloidal particle is uniform, the curcumin embedding rate can reach 99%, the curcumin bioavailability is increased, moreover, the physical stability and light-thermal stability of curcumin are both greatly improved, and a novel method is provided for stabilizing functional factors.

The invention discloses a plant essential oil chitosan nano microcapsule. The plant essential oil chitosan nano microcapsule comprises a wall material and a core material, wherein the wall material isprepared from chitosan and a cross-linking agent in an acetic acid water solution or an ionic liquid water solution through cross linking; the core material is prepared from plant essential oil and mannose erythritol ester. The plant essential oil chitosan nano microcapsule disclosed by the invention has better encapsulation efficiency and better particle diameter, the destruction to active components of essential oil can be reduced, the volatility of the essential oil is effectively reduced, the photo-thermal stability of the essential oil is increased, and the effect acting time of the essential oil is prolonged; liquid essential oil is stored in a solid form while the essential oil is not destroyed; a preparation process is safe, non-toxic and green; the application range of the plantessential oil is greatly expanded.

The invention relates to thermoplastic mixtures or to films produced therefrom, containing at least one polyvinyl acetal and at least one plasticiser, characterised by the addition of 0.001 to 1% by weight of at least one compound according to formula 1, where R=a hydrocarbon radical of a polyfunctional alcohol, oligoglycols comprising 1 to 10 glycol units or a hydrocarbon radical comprising 1 to 20 carbon atoms, and X=1, 2, 3 or 4 as a stabiliser.

The invention discloses a low-emission and low-smell filling functional master batch and a preparation method thereof. The low-emission and low-smell filling functional master batch comprises, by weight, 5-30 parts of resin, 1-30 parts of POP polyolefin elastomer, 60-90 parts of mineral, 1-10 parts of a dispersant, 1-10 parts of a deodorant and 0.1-2 parts of a stabilizer. The low-emission and low-smell filling functional master batch is prepared in a multistage vacuum hot air circulation manner through a multi-stage extrusion granulating system. The low-emission and low-smell filling functional master batch can be directly added to plastic and elastomer, the obtained mixture undergoes corresponding molding, and a final product member achieve the effects of low emission, low smell and gooddispersion through different combinations.

An inclusion compound of astaxanthin with hydroxypropyl-beta-cyclodextrin in mole ratio of 1: (1-100) features that part or all of astaxanthin moleculae are included in the cavities of hydroxypropyl-beta-cyclodextrin in order to improve the optical and thermal stability and water solubility of astaxanthin. It is prepared by deposition method, suspending method, or grinding method.

The invention discloses a lemon flavor tea drink and a making method thereof. The lemon flavor tea drink product comprises, by weight, 0.8-3.0% of instant black tea, 4-10% of white granulated sugar, 1-7% of fructose corn syrup, 0.21-0.82% of an antioxidant, 1-6% of an acidity regulator, 0.1-30% of concentrated lemon juice, 0.2-1.2% of edible essence, 0.1-0.75% of a stabilizer and the balance deionized water. The antioxidant is rutin and D-sodium erythorbate. When the drink is made, a tea and sugar mixed liquid, a stable system solution and the acidity regulator are prepared firstly, then the antioxidant is added in the tea and sugar mixed liquid and evenly stirred to form an antioxidant system solution, the stable system liquid is added in the antioxidant system solution, uniform mixing is conducted to obtain an intermediate liquid mixed solution, then acidity regulator liquid and the edible essence are added, and finally the drink is packaged after being sterilized at high temperature. The lemon flavor tea drink and the making method of the lemon flavor tea drink can delay fission of lemon fragrance, light and heat stability of the drink is improved, and besides the flavor of drink is excellent.

The invention provides a preparation method of a metal quantum dot plasma coupler color filter. The preparation method comprises the steps that 1) metal nanoparticles (1) are prepared by utilizing a polyol method; 2) metal/SiO2 core/shell composite particles (3) coated by silicon dioxide shell layers (2) of different thicknesses are prepared; 3) amination of the surface of the metal/SiO2 core/shell composite particles is performed by utilizing 3-aminopropyltriethoxysilane; 4) oil phase red light quantum dots and green light quantum dots (4) are prepared by utilizing a high temperature thermal decomposition method and surface ligands are replaced by 3-mercaptopropionic acid; 5) the metal/SiO2 core/shell composite particles are connected with the quantum dots by utilizing a self-assembling method so that a metal quantum dot plasma coupler (5) is formed; 6) ethyl orthosilicate is catalyzed to be hydrolyzed by utilizing ammonia to prepare SiO2 sol; 7) the metal quantum dot plasma coupler is mixed with the SiO2 sol so that metal quantum dot plasma coupler dispersion liquid is formed; and 8) metal quantum dot plasma coupler dispersion liquid is enabled to form a pixel image by utilizing a spraying method.

A method for the production of a light emitting device is provided, comprising providing at least one LED 10 and at least one optical element 13; arranging a bonding material 12, comprising a stable colloidal sol of inorganic metal oxide nanoparticles dispersed in a liquid medium, on a light emitting surface 11 of said at least one LED and/or on a surface of said at least one optical element 13; (c) placing said at least one optical element 13 on the light emitting surface 11 of said at least one LED 10 with said bonding material 12 there between to form at least one assembly; and curing said bonding material to form an inorganic bond.

The bonding material may be cured at temperatures not detrimental to the LED, while the resulting bond is photo-thermally stable.

The invention discloses low-emission, low-odor and dustproof functional master batch and a preparation method thereof. The low-emission, low-odor and dustproof functional master batch is prepared fromcomponents of raw materials in percentage by weight as follows: 10%-80% of resin, 5%-80% of a thermoplastic elastomer, 5%-40% of an antistatic agent, 1%-10% of a deodorant and 0.1%-2% of a stabilizer. The low-emission, low-odor and dustproof functional master batch is prepared through a two-stage extrusion and granulation system in a double-stage vacuum and hot air circulation manner. The low-emission, low-odor and dustproof functional master batch can be directly added to plastic and the elastomer for corresponding forming, and a final product workpiece realizes the effects of low emission,low odor, good dustproof and dispersion properties and excellent comprehensive mechanical property through different combinations.

The invention relates to a yellow-light carbon dot with high light and heat stability, which is a carbon dot solution obtained by taking trimesic acid as a carbon source and o-phenylenediamine as a nitrogen source and carrying out solvothermal reaction in absolute ethyl alcohol. The yellow-light carbon dots prepared by the invention have bright yellow light emission and high light stability and thermal stability. The yellow-light carbon dot fluorescent film can be obtained by mixing and curing the yellow-light carbon dots and KH-792, can be used for preparing a high-energy white light LD device, and can be compounded with 450nm blue light LD to realize pure white light laser illumination.

The invention provides bay-position organic phosphine bridged perylene bisimide containing phosphorus-sulfur bond structure and a preparation method thereof. The structural formula of perylene bisimide is as shown in the description. The preparation method comprises the following steps: adding tetrabromofluorene tetracarboxylic dianhydride into a solvent, adding primary amine compounds while stirring, heating in the presence of an inert gas, cooling, then removing a solvent, purifying to obtain a tetrabromophthalimide compound, dissolving, utilizing freeze-thaw degassing method, cooling, adding a solution of n-butyllithium, reacting, then adding a thiophosphoryl dichloride compound, and dissolving, washing, drying and purifying to obtain bay-position organic phosphine bridged perylene bisimide with phosphorus-sulfur bond structure. Perylene bisimide provided by the invention has greater solubility in a conventional organic solvent, and is simple in preparation, high in yield and easy to implement.

The invention relates to an organic semiconductor laser material and a preparation method and application thereof. The organic semiconductor laser material uses a trapezoidal fluorene structure as a skeleton, a trapezoidal linear micromolecule compound which is terminated by different electron receptor units is selected, and the formulas are shown in 2L, 3L or 4L, wherein R is an aryl group; A is an electron receptor structure-modified unit; D is an electron donor structure-modified unit. The organic semiconductor laser material has the advantages that the preparation is simple, the purifying is easy, the chemical structure is clear, the heat stability is better, the glass-transition temperature is high, the reversible electrochemical oxidization reduction characteristic is realized, a uniform non-shaping thin film is easily formed, and the like; the material can adopt the simple solution film forming type to prepare a thin film device, the good heat stability, high laser grain and low laser threshold value are realized in an organic laser device, and the important application value is realized in the organic electric pumping laser and LED (light emitting diode) pumping laser.

The invention relates to a PEG-modified two-dimensional nanosheet photothermal conversion material. The material is formed through coordination self-assembling of tetrahydroxyanthraquinone and bivalent copper ions and modification with PEG, and the diameter of the above nanosheet is 500-800 nm, wherein a molar ratio of the tetrahydroxyanthraquinone to the bivalent copper ions is (1.5-2):1. The two-dimensional nanosheet has a high light absorption coefficient in the near-infrared region, high photothermal conversion ability under the irradiation of near-infrared laser, expands existing photothermal conversion materials, and can be used in the photothermal therapy of tumors.

The invention discloses a UV-type graphene quantum dot/nano-silver wire composite solvent-based conductive ink and a flexible transparent conductive film based thereon. The conductive ink is preparedby uniformly mixing graphene quantum dots, prepared from graphene oxide in an ethanol solution of nano-silver wires, UV resin, a UV monomer, a photoinitiator, a dispersant and a mixed solvent according to a certain ratio; and the flexible transparent conductive film is obtained by coating the non-hardened surface of a substrate with the conductive ink through a dimpled coating process, drying theink by a tunnel furnace and carrying out UV curing. The flexible transparent conductive film has the characteristics of simple structure, good flexibility, high stability, low square resistance, excellent optical performances, simple preparation process and easiness in industrial production, and is suitable for large-size display and flexible display.

The invention relates to high-refraction-rate resin which has the following general formula (please see the general formula in the specification). The resin is high in refraction rate, the refraction rate reaches 1.58 or above, the resin can be used for a hardened coating of an optical thin-film material, and the refraction rate of a polyester film can be increased.

The invention relates to a triphenylamine type organic hole transport material with 1,1'-bi-2-naphthylamine as a parent nucleus and synthesis and application of the triphenylamine type organic hole transport material. The compound adopts triarylamine as an electron-donating unit, and the 1,1'-bi-2-naphthylamine with a certain helix structure is used as the parent nucleus. The compound has a structural formula (I) shown in a formula I (please see the description for the formula), wherein R1 is C1-C12 hydrocarbyl and C1-C12 alkoxy. R2 and R3 are aromatic ring groups containing N, S or O substituted C4-C20, or C1-C20 hydrocarbyl, or hydrogen atoms. The compounds can be used as hole transport materials in perovskite solar cells and have the ability of hole transport. The molecule has a C2 symmetry axis, and the prepared hole film has good morphological stability, so that the charge recombination caused by film defects is effectively reduced, and effective hole transfer in the molecule canbe produced. The triphenylamine type organic hole transport material has characteristics of simple synthesis, simple process, outstanding photoelectric performance, high hole mobility of hole molecules and good photothermal stability.

The invention provides a bay organic phosphine bridging fiber perylene diimide containing a phosphorus oxide bond structure and a preparation method thereof. A structural formula of perylene diimide is described in the specification. The preparation method comprises the following steps: adding tetrabromo-perylene tertracarboxylic acid dianhydride into a solvent, stirring, adding a primary amine compound while stirring, heating for reaction in presence of inert gas, cooling, then removing the solvent, purifying to obtain a tetrabromo-perylene imine compound, then dissolving, carrying out water-free and oxygen-free treatment, cooling, then adding n-butyl lithium solution, carrying out reaction, then adding a compound containing methyl phosphonic dichloride, dissolving, washing, drying, and carrying out purification treatment, thus obtaining the bay organic phsophine bridging fiber perylene diimide containing the phosphorus oxide bond structure. The perylene diimide provided by the invention has relatively high solubility in the conventional organic solvent, the preparation method is simple, yield is high, and implementation is easy.

The invention relates to the technical field of tube materials, in particular to a fiber reinforced PVC flexible tube. The flexible tube successively comprises a PVC inner layer, a fiber web layer anda PVC outer layer from inside to outside. The flexible tube is characterized in that the fiber web layer is made of compound fibers, and the compound fibers are polystyrene fibers or ramine fibers orABS resin fibers. The PVC inner layer and the PVC outer layer are prepared from the components in parts by weight: 75 to 95 parts of PVC resin, 5 to 15 parts of wear-resisting packing, 5 to 10 partsof an anti-aging master batch, 4 to 8 parts of a plasticizer and 1 to 3 parts of a lubricant. The PVC flexible tube has the advantages of being not prone to fracture and strong in pressure resistance.

The invention relates to the technical field of detection, and discloses a silane bridging luminescent material, a preparation method and an application thereof, and a color developing agent, the silane bridging luminescent material has a structure represented by a formula (I), and n is a natural number of 1-20; R1 is a conjugated luminescent group. The preparation method of the silane bridging luminescent material comprises the following steps: lithiating a chloro compound containing a conjugated luminescent group, and reacting with chlorosilane or trifluoromethanesulfonyl silane. The properties of the luminescent material are accurately regulated and controlled by utilizing sigma electrons of silicon-silicon, the obtained luminescent material shows high light stability and strong luminous efficiency, meanwhile, the original color of a luminophor is almost reserved, and the luminescent material has good lipophilicity, so that the capacity of combining with sebum is improved. The colordeveloping agent comprises the silane bridging luminescent material and acetonitrile and can be applied to the field of latent fingerprint display, and latent fingerprint visual imaging which is easyto operate, rapid and high in resolution is achieved.

The invention discloses a gold nanometer podophyllotoxin liposome, a preparation method and use thereof. The gold nanometer podophyllotoxin liposome is a nano-composite obtained by causing a gold nanorod to be modified by a polyelectrolyte and then combined with the outer surface of the podophyllotoxin liposome containing carboxyl. The gold nanometer podophyllotoxin liposome is in a typical vesicle shape with a particle diameter of about 129.8 nm and a zeta potential of +15.7 mV, and has a high extinction coefficient (8.08Lg<-1>cm<-1>) and photothermal conversion efficiency (46.1%); and the gold nanometer podophyllotoxin liposome has no cytotoxicity and no hemolysis. The gold nanometer podophyllotoxin liposome has good photothermal stability under near-infrared irradiation and can achieverapid release; and the synergistic treatment of chemotherapy-photothermal therapy has a strong killing effect on tumor cells, and an effect thereof may not be limited to this.

The invention provides a multifunctional wood-plastic composite material. The multifunctional wood-plastic composite material comprises the following raw materials and components in parts by weight: 60 to 65 parts of polyvinyl chloride, 18 to 20 parts of chlorinated polyethylene, 60 to 65 parts of wood powder, 10 to 12 parts of calcite powder, 10 to 12 parts of diatomite, 10 to 12 parts of shell powder, 8 to 10 parts of jade powder, 5 to 7 parts of mica powder, 5 to 7 parts of talcum powder, 4 to 6 parts of tricresyl phosphate, 3 to 5 parts of magnesium hydrate, 3 to 5 parts of zinc oxide, 2 to 4 parts of oxidized polyethlene wax, 1.5 to 2 parts of tourmaline powder, 2 to 3 parts of pine needle meal, 1.5 to 2 parts of naringenin, 1.5 to 2 parts of thyme, 1 to 1.5 parts of tamarind fruit shell, 2 to 3 parts of callicarpa nudiflora, 1.5 to 2 parts of Chinese ilex leaves, 1 to 1.5 parts of schizonepeta, 0.3 to 0.5 part of a coupling agent, 4 to 6 parts of a stabilizer, 2.5 to 4 parts of acompatilizer, 0.5 to 1 part of an ultraviolet light absorber and 1 to 2 parts of antioxidant. The wood-plastic composite material provided by the invention is excellent in comprehensive performance,antibacterial and sterilization performance and anti-mold property.

The invention discloses a perfluoroalkyl-modified perylene imide and its preparation method. The structural general formula of the perfluoroalkyl-modified perylene imide is shown in the description, and the structural formula of R is shown in the description, wherein, X represents H, F and Br, m and n refer to the number of alkyl C atom and the number of perfluorinated alkyl C atom respectively, m is 1, 2, 3, 4, 5 or 6, and n is 1, 3, 5 or 7. In the preparation method, 3,4,9,10-perylenetetracarboxylic dianhydride and perfluoroalkylamine are used as raw materials, the molar ratio of 3,4,9,10-perylenetetracarboxylic dianhydride and perfluoroalkylamine is 1:2 to 1:6, and in a temperature range of the room temperature to the solvent reflux temperature, the raw materials are stirred for a reaction for 1-12 hours in an organic solvent under the protection of Ar or N2 to generate the perfluoroalkyl-modified perylene imide. The preparation method can significantly increase the solubility of a perylene imide type material in an organic solvent, at the same time, improve the light and heat stability of the perylene imide type material and the device stability in a field effect transistor.

A transparent silicone epoxy composition is provided. The transparent silicone epoxy composition comprises (a) at least an epoxy modified siloxane, (b) at least a silanol-containing siloxane and (c) a catalyst. Each epoxy modified siloxane molecule comprises at least two cycloaliphatic epoxy groups and epoxy modified siloxane in the transparent silicone epoxy composition is about 10˜89 weight percentage. Silanol-containing siloxane can be cross-linked with epoxy modified siloxane. Silanol-containing siloxane comprises at least two hydroxyl groups. Silanol-containing siloxane in the transparent silicone epoxy composition is about 89˜10 weight percentage. The catalyst in the transparent silicone epoxy composition is about 0.01˜1 weight percentage.