21results about How to "Reduce light scatter" patented technology

The invention relates to the field of anorectal departments, and provides an anorectal postoperative endoscopic multifunctional examination device and an examination method thereof.The anorectal postoperative endoscopic multifunctional examination device comprises an insertion pipeline, a lens part is installed at the end of the insertion pipeline, an assembling boss is installed in the middle of the front end of the lens part, and a camera is installed at the front end of a convex head part of the assembling boss; a plurality of light supplementing lamps are installed on the outer side of the front end of the assembling boss at equal intervals, a radian transparent cover is installed on the outer side of the front end of the lens part, an inner carrying cylinder is installed in the lens part, a pulling assembly is arranged in the middle of the inner carrying cylinder in a sliding mode, hot air assemblies are installed at the top end and the bottom end of the inner carrying cylinder correspondingly, and a focusing assembly is installed on the radian transparent cover. During use, the pulling assembly, the hot air assembly and the focusing assembly are utilized, the problem of water mist condensation caused by light reflection, ghosting hot spots and temperature difference of the endoscope camera due to the transparent protective cover is avoided, and the imaging quality and the shooting reliability are improved.

The invention discloses a transparent polyurethane hot melt adhesive and a preparation method thereof, relates to the technical field of polyurethane hot melt adhesives, and solves the problems that PET (Polyethylene Terephthalate) waste cannot be recycled in a high-valued manner and the traditional polyurethane hot melt adhesive excessively depends on petrochemical resources in the prior art. The transparent polyurethane hot melt adhesive prepared by the preparation method disclosed by the invention is prepared from the following components in parts by mass through reaction: 420 to 510 parts of waste PET (Polyethylene Terephthalate) sheets, 35 to 48 parts of sulfur-containing dihydric alcohol, 0.15 to 0.30 part of an antioxidant, 0.18 to 0.47 part of a catalyst I, 180 to 240 parts of poly (carbonate-ether) dihydric alcohol, 0.05 to 0.12 part of a catalyst II and 115 to 142 parts of diisocyanate. The transparent polyurethane hot melt adhesive has high transparency and excellent glass adhesion, high-valued recovery of PET waste can be realized, excessive dependence on petrochemical resources is reduced, and a new thought is provided for development of sustainable materials in the plastic recovery industry.

The invention discloses a preparation method of a simulation tree with an infrared stealth camouflage characteristic, and belongs to the technical field of infrared camouflage. The preparation method is used for solving the technical problems that in the prior art, a camouflage tree for military camouflage is poor in water resistance and acid-resistant color fastness, and the infrared stealth camouflage characteristic of a simulation tree needs to be further improved, and the preparation method of the simulation tree with the infrared stealth camouflage characteristic is provided. Comprising the following steps: heating and melting infrared simulation resin imitating the color of bark, and then coating the infrared simulation resin on the outer part of a simulation tree skeleton to form a simulation coating layer with the thickness of 20-30mm on the outer part of the simulation tree skeleton. By preparing the simulation tree skeleton coated with the glass fiber and coating the simulation tree skeleton with the infrared simulation resin, the highly similar simulation tree is prepared, the water-resistant and acid-resistant color fastness of the simulation tree is improved, the moisture absorption performance of the simulation tree is also improved, the transpiration of green vegetation leaves is simulated, and the simulation tree skeleton can be used as a simulation tree. The target is fused into the natural environment, and the infrared stealth effect is improved.

The invention discloses a near-infrared iron ion fluorescent probe as well as preparation and application thereof, and belongs to the technical field of analytical chemistry and biology. The excitation wavelength and the emission wavelength of the fluorescent probe disclosed by the invention are both located in a near-infrared region, the fluorescent probe has excellent selection performance on ferrous ions, can realize rapid detection on endogenous and exogenous ferrous ions of cells, can effectively avoid interference of autofluorescence of a sample, and improves the signal-to-noise ratio; the probe can be positioned in mitochondria, is crucial to research on the dynamic state and function of ferrous ions in the mitochondria, can rapidly image endogenous and exogenous ferrous ions in tumor cells in real time, shows a good biological fluorescence imaging application prospect, provides a powerful tool for tumor research, is beneficial to revealing the effect of the ferrous ions in tumors, and has a wide application prospect. The targeted treatment effect is evaluated, and the treatment scheme is optimized. The kit has potential clinical value in the aspects of tumor diagnosis, treatment monitoring, prognosis evaluation and the like, and has important technical effects and wide application prospects in biomedical research and clinical diagnosis.

The invention discloses a polyetherimide-ultraviolet light absorber composite film and a preparation method and application thereof, and the method comprises the following steps: adding a hydroxyl-containing ultraviolet light absorber into a diamine dispersion liquid to obtain a composite solution; bisphenol A type diether dianhydride is added into the composite solution in batches, stirring reaction is carried out, and composite sol is prepared; and preparing a composite film by using the composite sol, and carrying out imidization treatment on the composite film to prepare the polyetherimide-ultraviolet light absorber composite film. According to the method, a hydroxyl-containing ultraviolet light absorber is introduced, and the hydroxyl-containing ultraviolet light absorber and polyetherimide can form hydrogen bonds, so that chain segments are combined more tightly, molecular chain segments are increased, and relative movement of the chain segments is not easy to generate at high temperature, so that the thermal stability is improved, meanwhile, the weather resistance of the composite material is improved, and the service life of the composite material is prolonged. The method is simple to operate and efficient in reaction, and has wide application value.

An object that is to be achieved by the present invention is to provide an azo pigment having excellent transparency, suitable dispersibility, and a low viscosity, an ink, and the like. An azo pigment according to the present invention has a zeta potential of -80 to -30 mV in isopropanol (IPA). The content of a metal element in the azo pigment is preferably 0.05 to 2.00 parts by mass relative to 100 parts by mass of the azo pigment. The metal element is preferably an iron element. The ratio (Fe / C) of the concentration Fe (atomic%) of an iron element in the surfaces of particles of the azo pigment to the concentration C (atomic%) of a carbon element in the surfaces of the particles of the azo pigment which are determined by X-ray photoelectron spectroscopy is preferably 0.20 or less.

The molecular weight and the emission wavelength of the dye are balanced through a reasonable strategy, a series of compact organic small molecule dyes with the emission wavelength from a visible light window to a second near-infrared window are obtained, the universality is good, and the good blood brain barrier crossing capacity is achieved. According to the invention, a low-molecular-weight flexible conjugated polyene chain is creatively selected as a pi electron bridge, so that the extension of a pi conjugated system can be effectively realized, the small molecular weight of the dye can be maintained, and moreover, the conjugated polyene chain is used for prolonging a pi-conjugated structure to enhance an ICT effect, so that the dye has a good application prospect. The red shift of the emission wavelength can be realized while the molecular weight is kept small. Therefore, on the basis of the p-hydroxybenzylidene-imidazolinone chromophore, an ICT effect is synergistically enhanced through an integrated molecular design strategy, a series of small-molecular-weight fluorescent dyes with a D-pi-A1 or D-pi-A1-pi-A2 structure are constructed, the maximum wavelength can reach 1200 nm or above, the blood-brain barrier permeability of the dye as a probe is ensured, and the fluorescent dye can be used for detecting the blood-brain barrier permeability of the probe. The method can be applied to in-vivo in-situ brain imaging.

The invention relates to the field of glass, and particularly discloses a substrate and TGV through hole glass suitable for the field of semiconductor packaging and a preparation method of the TGV through hole glass. The glass is prepared from the following components: 52 to 73 percent of S < iO >, Al < 2 > O < 3 >, B < 2 > O < 3 >, MgO, Sr < O >, CaO, BaO, ZrO2 and Fe < 2 > O < 3 >. According to the glass, a glass matrix obtained through a float glass forming process is subjected to annealing and chemical strengthening, high-alumina-silica matrix glass is obtained, and then surface plasma treatment and modified silicon carbide fiber treatment are performed, so that the adhesive high-alumina-silica glass is obtained. The glass has excellent dielectric constant and expansion coefficient, keeps extremely strong light transmission on the premise of strong interface adhesion, can be used as a substrate for packaging a large-size wafer / panel, can be further plated with copper in a glass through hole technology, can improve the stability of a metal copper plating layer, and has a wide application prospect.

The invention discloses a photovoltaic power generation device and a photovoltaic system, and relates to the technical field of photovoltaic power generation, the photovoltaic power generation device comprises a photovoltaic power generation device main body of a rectangular frame structure, and the outer wall of one side of the photovoltaic power generation device main body is provided with a photovoltaic assembly used for directly converting solar energy into electric energy. An inverter for converting direct-current electric energy generated by the photovoltaic power generation device body into alternating-current electric energy is arranged on the outer wall of the top end of one side of the photovoltaic power generation device body, a cold cleaning mechanism is arranged on the side, close to the photovoltaic assembly, of the photovoltaic power generation device body, and an irrigation mechanism is arranged on the side, away from the photovoltaic assembly, of the photovoltaic power generation device body; shading mechanisms are arranged on the two sides of the photovoltaic module, an active inserting mechanism is arranged on the rear side of the orientation frame, a water storage tank, a guide pipe, a wiping plate and a rotating rod are matched with one another, a cold cleaning mechanism can effectively remove dust, dirt and other impurities accumulated on the plate face, and therefore the clean state of the plate face is kept.

This invention relates to the field of multilayer curable base film technology, specifically to the online coating of polyester optically curable base films and its preparation method. This invention overcomes the problem in existing technologies where the adhesion and optical performance of the curable base film cannot be simultaneously achieved. First, this invention obtains core-shell structured functional particles by modifying in-situ polymethyl methacrylate with nano-silica; second, it obtains modified PET by melt blending optical-grade PET chips; finally, it melts the functional particles and modified PET to obtain an anti-adhesion masterbatch, prepares a composite base film through three-layer co-extrusion and biaxial stretching, coats it with a functional coating liquid, cures it stepwise to form a curing layer, and then heat-sets it to obtain the optically curable base film. Through base film modification, functional particle core-shell design, three-layer co-extrusion structure, and the synergistic effect of coating and process, this invention produces a polyester optically curable base film that combines high optical performance and good coating adhesion, applicable to release protection in the electronics field, decoration in the home appliance field, and other fields.

The invention discloses a method for producing high-gloss wear-resistant inorganic ecological stone by a dry method, and relates to the field of building materials. The method comprises the following steps: mixing cement, industrial byproduct gypsum, mineral powder, industrial slag, building waste, tailings, marble, sand and a stone brightener in proportion, and carrying out material distribution, pressing, steam curing, curing, polishing and the like to obtain the high-gloss wear-resistant inorganic ecological stone slab. The process has the advantages of high solid waste utilization rate, low production energy consumption, high product surface luminosity, excellent wear resistance, environmental protection, no pollution and the like, and is suitable for wide application in the building decoration industry.

The invention discloses plastic capable of transmitting infrared light and a preparation method thereof, and belongs to the field of high polymer material engineering. The plastic capable of transmitting infrared light, prepared by the invention, comprises the following raw material components in parts by mass: 100 parts of carrier resin, 20-30 parts of modified infrared transparent filler and 1-2 parts of auxiliaries, wherein the carrier resin is obtained by crosslinking an ethylene-vinyl acetate copolymer, polyethylene and vinyl cyclosiloxane; the vinyl cyclosiloxane comprises 1, 3, 5-trivinyl-1, 3, 5-trimethyl cyclotrisiloxane and tetramethyl tetravinyl cyclotetrasiloxane, and the vinyl cyclosiloxane comprises 1, 3, 5-trivinyl-1, 3, 5-trimethyl cyclotrisiloxane and tetramethyl tetravinyl The modified infrared transparent filler is obtained by modifying the infrared transparent filler with 1, 1, 3, 3-tetramethoxy-1, 3-dimethyl disiloxane; the infrared transparent filler is obtained by compounding barium fluoride and magnesium fluoride; the plastic capable of transmitting infrared light, prepared by the invention, is relatively good in mechanical property and high in infrared transmittance.

The invention discloses a nano-zirconia dispersion liquid and a preparation method thereof, an optical coating liquid, an optical film and application thereof, and relates to the technical field of materials. The nano zirconium oxide dispersion liquid comprises modified nano zirconium oxide and a first organic solvent, and a modifier of the modified nano zirconium oxide comprises a coupling agent and polymer resin; wherein the polymer resin is poly (isobornyl acrylate-co-polyethylene glycol methacrylate). A flexible segment of polyethylene glycol methacrylate in the polymer resin provides better flexibility for the optical film, and a bridge ring structure of isobornyl acrylate forms a net structure with high crosslinking density in a film forming process and reduces internal stress in a photocuring process, so that better hardness performance is provided for the optical film; the nanoscale particle size zirconium oxide significantly improves the dispersion uniformity, reduces light scattering, improves the light transmittance and light transmission uniformity of the optical film, and reduces the haze of the film. And the method is expected to be popularized and applied in the frontier fields of high-precision optical systems, flexible display and the like.

The present disclosure provides a transparent elastic electronic skin of a wearable optoelectronic device and a preparation method thereof. The method comprises the following steps: obtaining an electrode patterned carrier; electrospinning an elastic polymer spinning solution on an electrode pattern layer of the electrode patterned carrier to obtain an elastic fiber membrane-electrode patterned carrier; immersing the elastic fiber membrane-electrode patterned carrier in water or an ethanol solution to obtain a conductive elastic fiber precursor membrane A; performing spin coating on the conductive elastic fiber precursor membrane A, and then drying and curing to obtain a conductive elastic fiber precursor membrane B; and performing selective wetting operation on the electrode pattern layer of the conductive elastic fiber precursor membrane B by using a liquid conductive metal to obtain the transparent elastic electronic skin of the wearable optoelectronic device. The transparent elastic electronic skin prepared by the method has high light transmittance, high mechanical elasticity, excellent air and moisture permeability, stable conductivity and suitable adhesion, so as to better meet the long-term dynamic high-precision wearing requirements.

This invention relates to the field of toughening agent technology, specifically a high-transparency, cold-resistant toughening agent for polyester materials and its preparation method. By weight, it comprises 50-90 parts PET, 10-40 parts PETG, 1-10 parts high-transparency TPEE, 1-5 parts TPEE-g-MAH, 0.3-6 parts composite plasticizer, 0.1-0.5 parts nucleating agent, and 0.1-0.5 parts antioxidant. The preparation method includes: raw material drying, additive premixing, mixing the base material and additives, melt extrusion, and cooling pelletizing. This invention, through the synergistic effect of high-transparency TPEE and the specific compatibilizer TPEE-g-MAH, achieves nanoscale dispersion and strong interfacial bonding while solving the technical problem of "toughening inevitably reducing transparency" in traditional toughening materials. This results in a material with a low-temperature impact strength of 110-150 kJ / m² at -30°C, while maintaining a light transmittance ≥90% and a haze ≤2%. It is particularly suitable for PET products requiring high transparency and low-temperature impact resistance.

The invention discloses a preparation method of a red organic pigment for a liquid crystal color filter material, which comprises the following steps: adding a hyperbranched polymer nano dispersant into ethyl acetate, and adding a pigment red 122 crude product and calcium chloride to obtain mixed slurry; adding the mixed slurry into a ball mill for grinding to obtain ground slurry; transferring the ground slurry into a dodecylamine polyoxyethylene ether aqueous solution, stirring, preserving heat, and filtering to obtain surface modified slurry; adding the surface modified slurry into a DMF (Dimethyl Formamide) solution containing a hyperbranched polymer nano dispersant, carrying out ultrasonic treatment, and filtering to obtain final slurry; and drying to obtain the product. By improving the processing technology of the pigment, pigment particles are refined to nanoscale, and the dispersion stability and fluidity of the pigment are improved. The prepared red organic pigment is uniform in particle size distribution, has high color purity and good optical performance, and is suitable for a color filter of a liquid crystal display.

This invention relates to a method for fabricating a light-emitting element based on an ultra-smooth interface composite functional transparent conductive layer, comprising the following steps: (1) providing a substrate and performing epitaxial growth; (2) growing a composite functional layer with a thickness of 5-10 nm on the surface of the epitaxial structure; (3) polishing the composite functional layer to ensure that the surface roughness Ra < 0.2 nm; (4) defining the photonic crystal pattern and etching photonic crystal pre-holes in the composite functional layer; (5) depositing the composite transparent conductive layer: firstly, using an atomic layer deposition system (ALD), filling the photonic crystal pre-holes with an ITO material of an indium-tin weight ratio of 90:10, and then growing a second ITO layer with a thickness of 30 nm and an indium-tin weight ratio of 95:5 as a current diffusion layer by sputtering or ion beam deposition, and finally performing high-temperature thermal annealing; this invention optimizes the light extraction efficiency and current diffusion performance of the device by combining fundamental planarization of the substrate interface with the precise fabrication of nanophotonic structures.

The present application relates to a pre-coating solution for optical film, a pre-coated optical film and application, wherein the solution comprises a water-based polyurethane resin, the chain extender used by the water-based polyurethane resin comprises at least a carboxylic acid derivative containing amide and unsaturated double bond, and the carboxylic acid derivative containing amide and unsaturated double bond is selected from at least one of N-(2,3-dihydroxypropyl) maleic amide acid and N-(2,3-dihydroxypropyl) acrylamide. The pre-coating layer formed on the surface of the film substrate by using the solution can simultaneously realize stable adhesion in high temperature and high humidity environment, excellent optical performance, high compatibility with various functional coatings and online production adaptability; moreover, the main chain of the pre-coating layer is mainly ether bond / amide bond, has no easy hydrolysis structure, is long-term wet heat stable and scratch-resistant, and can be adapted to various downstream composite processing processes.

The invention provides a liquid crystal composition and a liquid crystal display device thereof. The liquid crystal composition comprises at least one compound as shown in a general formula I and at least one compound as shown in a general formula N, wherein the compound as shown in the general formula I accounts for 0.1-50% of the liquid crystal composition in percentage by weight. The invention also provides a liquid crystal display device containing the liquid crystal composition. The liquid crystal composition provided by the invention has relatively high optical anisotropy, relatively high clearing point, relatively high transmittance, relatively high epsilon perpendicular to / delta epsilon, relatively large Kave and good low-temperature stability, so that a liquid crystal display device comprising the liquid crystal composition provided by the invention has relatively high transmittance and relatively low light scattering; according to the liquid crystal composition disclosed by the invention, a liquid crystal display device containing the liquid crystal composition can obtain a good display effect. # imgabs0 #

The application discloses an optical monomer, a holographic recording medium, a preparation method and related devices, wherein a chemical structure general formula of the optical monomer is wherein R1 represents hydrogen or a methyl group, n is a positive integer and n=2-10, the optical monomer provided by the application has multifunctionality, a high refractive index and low viscosity, and the preparation method is simple, further, the optical monomer with the above structure is introduced into a photopolymer type holographic recording medium, thereby obtaining a holographic recording medium with high sensitivity and high diffraction efficiency, and the application also provides a preparation method of the holographic recording medium, a volume holographic grating containing the holographic recording medium, a holographic optical element and an optical device.

The invention relates to the technical field of thin film materials, and provides a patterned high-reflection layer with good adhesion, a preparation method and an application thereof, wherein the high-reflection layer comprises an n(Si / W) layer, a gradient W-Cr alloy layer, a Cr layer, a silicon dioxide layer and a patterned reflective layer which are sequentially located on a surface-modified glass substrate from bottom to top; the n(Si / W) layer is composed of n periods of alternate deposition of Si layers and W layers, wherein the alternating period n is 30-50; the W content of the gradient W-Cr alloy layer gradually decreases and the Cr content gradually increases in a direction away from the n(Si / W) layer; the high-reflection layer of the invention realizes the combination of high reflectivity and good adhesion, solves the problems of easy peeling and poor stability of traditional high-reflection layers, and has a wide range of application value in the fields of photolithography masks, optical systems and semiconductor manufacturing, and provides a new technical path for the development of high-performance optical components.