80results about How to "Strong scattering ability" patented technology

The invention discloses a colored solar heat reflection and heat-insulation coating. The coating is prepared from the following raw materials: polymer emulsion, titanium dioxide, functional fillers, an infrared reflection pigment, kaolin, ground calcium carbonate, a dispersing agent, a wetting agent, a defoaming agent, a thickening agent, a film-forming additive, a preservative, and water. The colored solar heat reflection and heat-insulation coating provided by the invention has the advantages that a coating film with a high reflectivity is prepared through adoption of the components, addition of the functional fillers (glass microbeads, ceramic microbeads and floating beads) which are large in refraction coefficient and high in scattering capability and reflectivity, as well as the pigment which is large in infrared reflection ratio, and application of film-forming matters and the film-forming additive, so that the coating achieves good heat-insulation performance, multiple selectable colors, excellent elasticity, high stain resistance, as well as large solar and near-infrared reflection ratios.

A homogeneously illuminating ophthalmic instrument includes an illumination device having a source of illumination, a homogenizing unit and a projection device, at least one organic or inorganic source of radiation with spectrally selective emission being used as a source of illumination. The illumination generated in this way enables correspondingly adapted visual and/or digital observation, recording or display of the examined regions of the eye by a visualizing unit.

A process for preparing the nano-class glass fibres includes such steps as proportionally mixing SiO2, CaO, Na2O, K2O, Li2O and TiO2, smelting, drawing wire, burning-blowning, and collecting. Its apparatus is composed of smelting furnace, drawing unit, burning-blowing unit and collector.

The invention is a kind of surface source device for liquid monitor. The device comprises a light board and at least a source. The light board at least comprises an entrance face for receiving beams, a light exit face intersecting with the entrance face and a back face opposite to the entrance. The light house is at one side of the entrance face. The back face has a round or rectangular scattering spot.

The invention provides a substratum, a display panel and a display device. The substratum comprises a substratum body and scattering particles distributed in the substratum body, wherein the red lightrefractive index of the scattering particles is nR, and the blue light refractive index of the scattering particles is nB; and the red light refractive index of the substratum body is NR, and the blue light refractive index of the substratum is NB; and NR, nB, NR, NB meets the relation of |nR-NR|> |NB-nB|. That is to say, for the whole substratum, the refractive index difference of the substratumto red light is greater than that of the substratum to blue light. Due to the large difference of the red light refractive index, the scattering ability to the red light is high, and more light enters a large viewing angle area; and the difference of the blue light refractive index is small, so the scattering ability is low, and less light enters the large viewing angle area. Thus, the red lightbrightness of the large viewing angle area can be compensated, when the substratum is applied to the display side of the display panel, the situation that a white screen of the display panel is bluishcan be reduced, so that the display quality of the screen under the large viewing angle is improved, and the user experience is improved.

The invention relates to a PVC lamp box film and a preparation process thereof, and relates to the technical field of lamp box films. The PVC lamp box film specifically comprises the following components in parts by weight: 50-60 parts of PVC resin, 5-10 parts of EVA resin, 28-35 parts of a plasticizer, 1-3 parts of an ultraviolet light absorber, 2-5 parts of modified nano titanium dioxide, 1-5 parts of a stabilizer, 62-70 parts of ground calcium carbonate, 1.8-2.5 parts of anatase titanium dioxide, 10-15 parts of a flame retardant, 2-3 parts of a flame retardant synergist, 1-3 parts of a lubricant and 0.002-0.007 part of a pigment. The aging of the PVC lamp box film is delayed, and the service life is prolonged.

The invention provides a preparation method of an organic modified barium titanate nano particle and a preparation method of a quantum dot optical film. The preparation method of the organic modifiedbarium titanate nano particle comprises the following steps: adding barium hydroxide octahydrate into deionized water uniformly stirring to obtain a barium hydroxide solution; adding tetrabutyl titanate into an ethanol solvent, uniformly stirring to obtain a tetrabutyl titanate solution; adding the barium hydroxide solution into the tetrabutyl titanate solution to obtain a first mixed solution; adding a sodium hydroxide solution and an organic matter into the first mixed solution to obtain a second mixed solution, wherein the organic matter contains a carbon hydrogen bond and a carbon oxygen bond; sealing the second mixed solution in a high-pressure reaction kettle; carrying out high-temperature and high-pressure reactions on the second mixed solution, and carrying out centrifugal separation and purification to obtain the organic modified barium titanate nano particle.

The invention discloses a carbon-based film for inhibiting secondary electron emission and a preparation method thereof. The film is composed of a metal buffer layer and an amorphous carbon film layer, wherein the thickness of the metal buffer layer is 5-50 nm, the thickness of the amorphous carbon film layer is 30-200 nm, the size of carbon particles in the amorphous carbon film layer is 20-100 nm, and metal materials in the metal buffer layer is titanium, molybdenum or tungsten. The preparation method of the carbon-based film comprises the following steps that firstly, the metal buffer layeris deposited on a base in a metal target sputtering mode under the condition that the temperature of the base is 400-600 DGE C; then, the amorphous carbon film layer is deposited on the metal bufferlayer in a graphite target sputtering mode under the condition that the temperature of the base is 300-600 DGE C; and finally, the amorphous carbon film layer is subjected to high-temperature annealing treatment or/and sputtering treatment is carried out on the surface of the amorphous carbon film layer by argon ions. According to the carbon-based film prepared by the method, the content of sp2 bonds and the surface roughness of an amorphous carbon film can be improved, so that the secondary electron emission coefficient of the amorphous carbon film is reduced.

The invention relates to an optical fiber sense based subway metal structure stray current corrosion monitoring method, belonging to a metal structure corrosion monitoring method. The monitoring method is that light emitted from an ASE (Amplified Spontaneous Emission) broadband light source is respectively transmitted to a polarization controller and a 2*1 optical fiber coupler through a 1*2 optical fiber coupler, wherein the polarization controller is connected with an optical fiber current sensing head incident fiber; an optical fiber current sensing head tail fiber is connected with a polarization maintaining optical fiber which has been written into a long-period optical fiber grating; the output terminal of the 2*1 optical fiber coupler is connected with an optical fiber which has been written into a first Bragg grating with a wavelength of lambda1 and then connected with an optical fiber corrosion sensing head incident fiber; and an optical fiber corrosion sensing head tail fiber is connected with the optical fiber which has been written into a second Bragg grating with a wavelength of lambda2. A sensing method comprises the following steps of: respectively transmitting light outputted from a light source into the optical fiber current sensing head and the optical fiber corrosion sensing unit; winding a sensing optical fiber on a structural steel bar loading with stray currents in a current sensing region; and a modifying Fe-C alloy film outside a conductive metal film layer by using an electrochemical method. The monitoring method provided by the invention has the advantages of using full optical fiber transmission, simple light path and good insulation property.

The invention relates to the technical field of polymer composite materials, in particular to a preparation method of a nano modified polypropylene board. The preparation method has the advantages that the nano modified polypropylene board is prepared by using molten modified polypropylene as the base material, modified nano mixed powder dispersion liquid and modified basalt fibers as the modifiers and maleic anhydride grafted polypropylene, calcium carbonate, citric acid and the like as auxiliaries; the polypropylene is modified first, then the maleic anhydride grafted polypropylene is addedinto the polypropylene, a hydroxide solution is used to perform surface modification on the basalt fibers to enhance the affinity of the basalt fibers with nano particles, butyl titanate and anhydrousethanol are subjected to mixing and stirring reaction under the effect of a stabilizer to obtain gel, plant liquid is extracted from phoenix tree leaves, nano zinc oxide powder is evenly dispersed onthe surface of nonpolar base material under a polar adsorption effect so as to lower ultraviolet strength in the irradiation direction, the aging resistance of the polypropylene board is further increased, and promising application prospect is achieved.

An organic light emitting device comprises an anode, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and a cathode which are sequentially stacked. The materials of the hole injection layer include poly(3,4-ethoxylene dioxy thiophene), polystyrene sulfonate, and grapheme coated with calcium oxide, wherein the mass ratio of polystyrene sulfonate to poly(3,4-ethoxylene dioxy thiophene) is 1:2 to 1:6, and the mass ratio of grapheme coated with calcium oxide to poly(3,4-ethoxylene dioxy thiophene) is 1:100 to 1:10. The light emitting efficiency of the organic light emitting device is high. The invention further provides a preparation method of the organic light emitting device.

The invention aims at providing an organic light-emitting diode in a packaging layer structure. A packaging layer is in a composite structure formed by overlapping a packaging layer unit, and the packaging layer unit comprises a first organic barrier layer, a second organic barrier layer, a mixed barrier layer, a third organic barrier layer, a fourth organic barrier layer and an inorganic barrier layer which are laminated sequentially. Corrosion of active substances such as external water and oxygen to the organic light-emitting diode can be avoided effectively, and the service life of the organic light-emitting diode can be prolonged. The invention further provides a preparation method of the organic light-emitting diode. The preparation method is simple in technology and cheap in raw material, and facilitates large area preparation.

The invention discloses a display panel with switchable wide and narrow viewing angles and a display device.The display panel can be switched between the wide viewing angle and the narrow viewing angle, the display panel is provided with a display area and a non-display area located on the peripheral edge of the display area, and the display area comprises a patterned diffusion area and a patterned non-diffusion area; the light scattering capability of the diffusion area is higher than that of the non-diffusion area. A patterned diffusion area and a patterned non-diffusion area are arranged on the display panel with switchable wide and narrow viewing angles, and the scattering capacity of the diffusion area to light is higher than that of the non-diffusion area to light, so that the viewing angle range of the diffusion area is different from that of the non-diffusion area when the display panel is at a narrow viewing angle; a user can see the light diffused in the diffusion area in the large-view-angle direction and can design the pattern of the diffusion area, so that the pattern corresponding to the diffusion area can be seen in the narrow-view-angle and large-view-angle direction, and the displayed picture can be seen in the anti-peep-angle range.