1516 results about "High transmittance" patented technology

The invention discloses a high-detection-efficiency long-wave infrared spectrum imaging device and an imaging method, and belongs to the field of micro-nano optical design, the scheme is as follows: a metasurface spectrum modulation layer is composed of a square matrix formed by arranging a plurality of metasurface periodic units in sequence, and each metasurface periodic unit is composed of a plurality of metasurface structure units; each metasurface structure unit comprises a substrate and a plurality of nano columns, and the plurality of nano columns are distributed on the substrate in a C4 symmetrical structure; reverse design of the high-transmittance metasurface structure units is achieved through a particle swarm optimization algorithm, and structure parameters of the high-transmittance metasurface structure units are obtained; incident light passes through the metasurface spectrum modulation layer to realize spectrum coding, coding information is converted into an electric signal by a long-wave infrared focal plane detection pixel below, and a high-resolution long-wave infrared spectrum image can be reconstructed in cooperation with a deep neural network algorithm. The spectral imaging method provided by the invention is perfectly compatible with semiconductor and MEMS technologies, and long-wave infrared band spectral imaging with high detection efficiency is realized.

The invention discloses a transparent antenna for microwave energy transmission and a preparation method and application thereof, and belongs to the technical field of antennas. The transparent antenna comprises a radiation patch, a radiation patch substrate, a dielectric substrate, a reflection backboard substrate and a reflection backboard which are arranged in sequence. Wherein the radiation patch and the reflection backboard are copper nets; the dielectric substrate is of a hollow frame-shaped structure. The preparation method is simple, the adopted materials and the preparation process are both existing mature technologies, large-scale industrial production is easy to achieve, metal copper is adopted to replace traditional transparent metal (ITO), the cost of raw materials is reduced, high-transparency PET and PDMS are adopted as the preparation materials, it is guaranteed that the antenna has high transmittance in the visible light wave band, and the antenna is suitable for large-scale industrial production. Through the combination of the optimized pattern design of the antenna radiation layer and the dielectric substrate with the frame-shaped structure, the energy transmission efficiency and radiation performance of the antenna are remarkably improved, and the dielectric loss of the antenna is reduced.

The invention provides a self-repairing EVA adhesive film and a preparation method thereof, and relates to the technical field of solar photovoltaic module packaging. According to the self-repairable EVA adhesive film disclosed by the invention, through Diels-Alder reactive group grafting and silane coupling agent microencapsulation technologies, a dual self-repairing mechanism of a photovoltaic module packaging adhesive film is realized, and the dual self-repairing mechanism comprises physical rearrangement repairing and chemical bonding repairing; while high light transmittance (more than or equal to 90%) and bonding strength (more than or equal to 96 N / cm) are maintained, the aging resistance (delta YI is less than or equal to 3) of the EVA adhesive film is remarkably improved, the service life of the EVA adhesive film is remarkably prolonged, and the problems that a traditional EVA adhesive film is easy to age in an extreme environment and is easy to suffer from micro damage caused by mechanical stress are solved; the preparation process disclosed by the invention is compatible with the existing production line, and has a relatively high industrial application value.

The invention provides a positive photoresist composition as well as a preparation method and application thereof. The positive photoresist composition comprises acrylic copolymer resin and a photosensitizer, the acrylic copolymer resin comprises a first structural unit, a second structural unit and a third structural unit. The positive photoresist composition has the advantages of favorable aging resistance, high refractive index, high transmittance, high adhesive force and high hardness.

The invention relates to the technical field of optical elements, in particular to an optical filter applied to a medical communication sapphire window. The optical filter comprises a substrate, a main film system, a secondary film system and a metal film system, the main film system is located on one side of the substrate, the secondary film system is located on the other side, opposite to the main film system, of the substrate, the metal film system is located on the upper side of the main film system, the secondary film system is located on the other side, opposite to the main film system, of the substrate, and the metal film system is located on the lower side of the main film system. The main film system comprises four high-refractive-index film layers and four low-refractive-index film layers which are sequentially and alternately overlapped from the substrate to the outside according to the structure of the main film system, and the secondary film system comprises four high-refractive-index film layers and four low-refractive-index film layers which are sequentially and alternately overlapped from the substrate to the outside according to the structure of the secondary film system. The metal film system comprises three layers of Ti, Ni and Au metal film layers which are sequentially and alternately overlapped from the main film system to the outside according to the structure of the metal film system, and the optical filter can realize high transmittance and uniform signal intensity within the wavelength range of a communication channel of 1200-1700 nm, so that high communication efficiency is realized.

The invention relates to the technical field of PET optical films, and particularly discloses a high-light-transmittance blue-light-resistant PET optical film and a preparation method thereof, and the high-light-transmittance blue-light-resistant PET optical film is prepared from the following raw materials by weight: 70-85% of a polyethylene glycol terephthalate resin matrix; 3%-8% of a benzotriazole anti-blue light agent; 5%-12% of a silicon dioxide nano anti-reflection agent; 2%-6% of nano zinc oxide or nano cerium oxide; 1.5% to 4% of a polycarbodiimide cross-linking agent; 0.5%-3% of an anti-blocking agent; 0.4%-1.5% of an antioxidant; 0.4%-1.0% of an ultraviolet light absorber; the balance is a processing aid; the preparation method comprises the following steps: S1, pretreating the raw materials; s2, a mixing procedure; and S3, extruding and coating. The PET optical film provided by the invention has high optical properties of high light transmittance, blue light resistance and low haze, and has the advantages of high light transmittance and blue light blocking rate of the optical film and improvement of the application range of the optical film.

The present invention discloses a liquid crystal alignment agent, including a polyamic acid-polyimide copolymer and an organic solvent. The block polymer in the polyamic acid-polyimide copolymer is prepared by a diamine component comprising a structure shown in the following formula (1) and at least one dianhydride component selected from cyclobutane tetracarboxylic dianhydride shown in the following formula (3-1) and 1,3-dimethylcyclobutane tetracarboxylic dianhydride shown in the following formula (3-2); In formula (1), X1 and X2 each independently represent a single bond or an alkyl group with 1 to 6 carbon atoms; Y1 and Y2 each independently represent one or more of -NHCO-, -CONH-, -OCO-, -COO-; Ar is a nitrogen-containing heterocyclic structure. The present invention can provide a liquid crystal alignment film for a lateral electric field driven liquid crystal display element endowed with high mechanical strength and high transmittance and a liquid crystal display element having the liquid crystal alignment film.

The invention provides a metasurface based on spin decoupling and a preparation method thereof. The metasurface comprises a substrate layer and a plurality of rectangular nano columns located on the substrate layer. Wherein the lengths, the widths and the rotation angles of the rectangular nano-columns are different, and the rectangular nano-columns have high transmittance and [0, 2pi] all-phase coverage and meet the conditions of a half-wave plate; the plurality of rectangular nanorods regulate and control the left-handed circularly polarized light and the right-handed circularly polarized light through a preset phase, so that a preset function is realized; the preset phase comprises a propagation phase and a geometric phase. According to the metasurface provided by the invention, the substrate layer and the rectangular nanorod array with various sizes and different rotation angles are fused, so that accurate and independent phase regulation and control on the circular polarization state of incident light are realized, and the constraint of mutual interference of spinning states in a traditional optical element is thoroughly eliminated; different circularly polarized light signals can be distinguished and independently processed under a single wavelength, and the optical regulation degree of freedom is shown.

The invention relates to the technical field of ITO coating materials, and provides a low-sheet-resistance and high-light-transmittance ITO coating film and a preparation method thereof.The preparation method comprises the steps that S1, an yttrium-doped zirconium oxide substrate is prepared; s2, performing surface activation on the yttrium-doped zirconium oxide substrate; s3, performing magnetron sputtering in a radio frequency magnetron sputtering chamber, and forming a layer of ITO film on the surface of the yttrium-doped zirconia substrate; and S4, annealing treatment and gradient cooling treatment are carried out. The epitaxial growth of the ITO coating film is optimized through the prepared yttrium-doped zirconia substrate, and the magnetron sputtering, annealing and gradient cooling processes are combined, so that the microstructure of the film is optimized, the carrier mobility and the uniformity and stability of the film are improved, the grain boundary defect and carrier scattering loss in the ITO coating film are reduced, and the performance of the film is improved. The low sheet resistance and high light transmittance of the ITO coating film are synergistically improved, and the obtained ITO coating film has important application value in the fields of high-performance optoelectronic devices, transparent conductive films and the like.

The invention provides a high-transmittance ITO conductive glass preparation process, and belongs to the technical field of conductive glass preparation, and the high-transmittance ITO conductive glass preparation process comprises the following steps: S1, cleaning a substrate: carrying out ultra-clean cleaning on a glass substrate to remove oil stains and impurities on the surface, and blow-drying by adopting a high-pressure air knife; s2, coating pretreatment: feeding the cleaned glass substrate into a coating chamber, and carrying out pretreatment before coating; s3, forming a SiO2 film: adopting a medium-frequency coating process, obtaining the SiO2 film through medium-frequency reactive sputtering of a Si target, reducing the quantity of electric charges accumulated on the surface of the SiO2 film, and reducing the probability of abnormal discharge; s4, forming an ITO film: continuously coating the SiO2 film to form an ITO conductive film; and S5, post-treatment: carrying out annealing and cleaning post-treatment on the coated glass so as to improve the stability and adhesive force of the film layer. According to the invention, a traditional radio frequency sputtering SiO2 film forming process is replaced by an intermediate frequency coating process, so that the quantity of electric charges accumulated on the surface of the SiO2 film is reduced, the probability of abnormal discharge is reduced, and the product quality is effectively ensured.

The invention discloses acousto-optic chalcogenide glass with a high laser damage threshold, the chemical composition formula of the acousto-optic chalcogenide glass is GexSySez, x, y and z respectively represent the mole fractions of Ge, S and Se, x = 10-30, y = 5-40, z = 40-70, x + y + z = 100, and the microscopic network structure of the acousto-optic chalcogenide glass contains a [GeSe4] tetrahedron, a [GeSSe3] tetrahedron, a [GeS2Se2] tetrahedron, a [GeS3Se] tetrahedron, a [GeS4] tetrahedron and a Se ring. The acousto-optic chalcogenide glass provided by the invention has a relatively high laser damage threshold Fth (9.72-15.58 J / cm < 2 > at1550 / 20ns / 5kHz), a relatively low thermo-optic coefficient dn / dT and good acousto-optic characteristics and mechanical properties, is high in near-infrared band transmittance, and has a relatively high laser damage threshold while ensuring a high acousto-optic quality factor. The material can be used as a material basis for developing high-performance and high-stability infrared acousto-optic modulation devices.

The invention discloses an electromagnetic metasurface unit for realizing high-efficiency generation and focusing of vortex beams, which comprises a dielectric layer in the middle, an upper conductive metal layer and a lower conductive metal layer, the upper conductive metal layer and the lower conductive metal layer are arranged on the upper surface and the lower surface of the dielectric layer, and the thicknesses of the two conductive metal layers are both greater than the skin depth. The line width of the arc is equal to the line width t of the rectangle, the left end of the rectangle is connected with the inner wall of the arc, the arc is vertically symmetrical relative to the rectangle, and the lower conductive metal layer and the upper conductive metal layer have the same structure and parameter and are symmetrical relative to the y axis; meanwhile, the invention also discloses an electromagnetic metasurface for realizing high-efficiency generation and focusing of vortex beams and a generation method of the electromagnetic metasurface. The laser has the advantages of being simple in structure, low in manufacturing cost, small in metal loss, high in transmissivity and good in focusing effect.

The invention relates to the technical field of flexible transparent electrodes, in particular to a Cu / Al laminated metal grid flexible transparent electrode and a preparation method thereof. The Cu / Al laminated metal grid flexible transparent electrode comprises a flexible substrate, a copper layer arranged on the flexible substrate and an aluminum layer arranged on the copper layer, and the aluminum layer located on the outer layer spontaneously forms an Al2O3 passivation layer with the thickness of 2-5 nm in air. The Al2O3 passivation layer can effectively prevent oxygen and moisture from permeating inwards, so that oxidation of the copper layer in a humid or high-temperature environment is fundamentally inhibited, long-term stability of the electrical property of the electrode is ensured, and meanwhile, due to the fact that the thickness of the copper layer is 150-250 nm, excellent conductivity is provided, and low square resistance is achieved; the latticed structure maintains high light transmittance of the electrode while ensuring a high conductive path. Finally, the structure has excellent oxidation resistance, high light transmittance, low sheet resistance and flexible stability under the support of a flexible transparent substrate with the thickness of 50-200 [mu] m, and meets the harsh requirements of a new generation of flexible optoelectronic devices on electrode performance.

The invention provides a transparent electromagnetic shielding metal copper mesh and a preparation method and application thereof. The preparation method of the transparent electromagnetic shielding metal copper mesh comprises the steps that an electromagnetic shielding substrate is coated with an ink layer, then the ink layer is converted into a patterned metal copper mesh to be deposited on the surface of the electromagnetic shielding substrate through a femtosecond laser reduction direct writing method, and finally ink which is not converted into the metal mesh is cleaned through cleaning liquid. Obtaining a transparent electromagnetic shielding metal copper mesh; the ink is prepared from copper salt, water, reductive low-carbon alcohol and a nano material, and the nano material comprises at least one of a high-conductivity nano material and a high-permeability nano material. According to the method, the transparent electromagnetic shielding metal copper mesh is prepared through femtosecond laser reduction direct writing, by adjusting the line width and the period of the metal copper mesh, the shielding effectiveness is effectively improved under the condition that the high light transmittance of an electromagnetic shielding material is guaranteed, the technological method is simple and feasible, and high-efficiency and low-cost manufacturing of the transparent electromagnetic shielding metal copper mesh is achieved.

The invention discloses a color-permeable colorful ceramic and a preparation process thereof, and belongs to the technical field of ceramic preparation processes, a transparent AlON ceramic body is formed by low-temperature diffusion bonding sintering, an adjustable structural color of 480-630 nm is realized through TiO2 / ZrO2 nanocrystalline spacing (180-220 nm), a Sm2O3 chemical color is superposed, delta E is less than or equal to 0.5, and the color is changed along with the angle and does not fade; after decoration firing of a finished product, embossment line patterns can be engraved inside and outside the ceramic body through femtosecond laser, due to the fact that the main body of the ceramic body is high in light transmittance, when light directly irradiates or enters the interior from the top as a bottle, halo of the embossment line patterns engraved inside and outside can be scattered on the surface, and the overall optical effect is improved; the ceramic is suitable for high-grade decorative ceramics such as bottles and ornaments.

The invention relates to the technical field of optical cement, in particular to high-temperature-resistant acrylic optical cement with high light transmittance and a preparation method of the high-temperature-resistant acrylic optical cement. The preparation method of the high-light-transmittance high-temperature-resistant acrylic optical adhesive comprises the following steps: (1) under the protection of inert gas, mixing an acrylate monomer, a carboxyl-containing monomer, an epoxy-containing monomer, a hydroxyl-containing monomer, a photoinitiator and modified inorganic nanoparticles, and stirring at 60-90 DEG C and 200-600rpm for 3-8 hours to obtain an adhesive solution; and (2) carrying out vacuum curing on the glue solution at 50-80 DEG C for 5-15 minutes to form a glue material, pressing the glue material into a film, and cooling to obtain the optical cement. The prepared high-temperature-resistant acrylic optical adhesive with high light transmittance has good light transmittance, high-temperature resistance and good peel strength, the light transmittance of the optical adhesive is larger than 90%, the heat-resistant temperature is larger than 150 DEG C, the peel strength is larger than 14 N / 25 mm, and the peel strength after high-temperature treatment is larger than 11.8 N / 25 mm.

The invention belongs to the technical field of energy-saving materials, and discloses a thermal insulation coating energy-saving material, which is prepared from the following raw materials in parts by weight: 90 to 120 parts of waterborne resin, 10 to 25 parts of modified nano cesium tungsten bronze material, 5 to 20 parts of modified nano silicon dioxide, 1 to 10 parts of light stabilizer, 0.1 to 1 part of coupling agent, 0.5 to 3 parts of flatting agent, 5 to 10 parts of wetting dispersant and 0.05 to 0.1 part of defoaming agent. According to the heat-preservation heat-insulation coating energy-saving material disclosed by the invention, the water-based resin is used as a main film-forming material, the modified nano cesium tungsten bronze and the modified nano silicon dioxide are used as nano functional materials, and the light stabilizer is used as an auxiliary material; by utilizing the excellent visible light transmittance and near-infrared light shielding performance of the modified nano-scale cesium tungsten bronze and the high transmittance and infrared barrier performance of the modified nano-silica, the glass can ensure that the visible light transmittance of the glass is 76% or above, meanwhile, 97% or above of infrared light and ultraviolet light are isolated, and the glass has excellent heat insulation and cooling effects.

The invention provides an automatic adjustment photovoltaic power generation curtain wall, and relates to the technical field of building curtain walls, and the power generation curtain wall comprises a curtain wall outer frame body, a front light-transmitting glass part, a rear light-transmitting glass part and a plurality of photovoltaic substrates. The photovoltaic substrates are connected with the side adjusting mechanisms in the side cavities through the shaft parts of the photovoltaic hollow rods, and the side adjusting mechanisms comprise lifting parts and angle adjusting assemblies and are used for adjusting the inclination angles and the distances of the photovoltaic substrates. An adjuster is arranged at the bottom of the curtain wall outer frame, a photoreceptor is arranged on the front end face, the photoreceptor senses the sunlight direction and transmits the sunlight direction to the adjuster, and the adjuster controls the angle adjusting assembly and the lifting part to work so as to optimize the solar energy absorption efficiency of the photovoltaic substrate. When the indoor brightness needs to be increased, the photovoltaic substrate can be folded to reduce the occupied space and improve the light transmittance. The solar energy utilization efficiency is improved, and meanwhile the indoor lighting requirement is met.

The invention discloses power generation glass capable of transmitting 5G signals, and relates to the technical field of photovoltaics. The 5G signal transmission power generation glass comprises a glass substrate and a power generation thin film layer arranged on one side face of the glass substrate, the power generation thin film layer is provided with signal anti-reflection structure units which are distributed in a two-dimensional periodic array mode and penetrate through the power generation thin film layer, and the signal anti-reflection structure units are centrosymmetric Y-shaped grooves. The signal anti-reflection structure unit is arranged on the glass substrate, so that high transmittance of electromagnetic waves of a target frequency band can be realized on the premise of ensuring the power generation efficiency of the power generation glass. In addition, the centrosymmetric Y-shaped groove has the advantages of being insensitive to angles and polarization and the like, and has high practical value in actual life and production application scenes.

The invention provides an ultralow-swelling artificial cornea imitating natural cornea fiber arrangement and a preparation method, and belongs to the technical field of biomedical materials.The preparation method comprises the steps that I-type collagen is dissolved in a PBS buffer solution, a photofunctionalization modified active reagent is added for chemical modification, stirring is conducted in a dark place, freeze drying is conducted, and photofunctionalization collagen is obtained; dissolving the photo-functionalized collagen, and then preparing a collagen fiber membrane through electrostatic spinning; and performing phase change DLP 3D biological printing on the biological ink and the collagenous fiber membrane to obtain the keratoprosthesis with the collagenous fiber sandwich structure. Multi-layer arrangement is achieved through DLP 3D biological printing, the fiber trend of the natural cornea is simulated, and the mechanical anisotropy is remarkably improved; through a composite phase change DLP 3D printing mode of GelMA / HA-DN and photo-crosslinking collagenous fibers, the composite phase change DLP 3D printing material has good manufacturability, maintains high light transmittance and maintains high mechanical strength.

The invention belongs to the technical field of flexible transparent energy storage, and discloses a preparation method and application of a flexible stretchable transparent MXene / AgNWs / PDMS composite film electrode, according to the method, a PDMS substrate film, AgNWs and MXene are assembled layer by layer, and a Schottky barrier is formed between one-dimensional AgNWs and two-dimensional MXene, so that the MXene material is firmly attached to the surface of the AgNWs material, corrosion of the AgNWs can be prevented, and the service life of the flexible stretchable transparent MXene / AgNWs / PDMS composite film electrode is prolonged. According to the MXene / AgNWs / PDMS composite film electrode, the cycle stability of the composite electrode is improved, a 1D / 2D heterostructure can be formed, the electrochemical storage capacity of the MXene / AgNWs / PDMS composite film electrode is effectively improved, and a flexible transparent supercapacitor with high light transmittance, high capacitance and mechanical flexibility perfectly unified is expected to be achieved.

The invention provides a preparation method of a volume holographic element, the volume holographic element and an augmented reality 3D display device. The preparation method comprises the following steps: providing a pixelated diffractive lens array and a volume holographic material arranged adjacent to or adjacent to the pixelated diffractive lens array; wherein the pixelated diffraction lens array comprises target diffraction lens sub-units which are distributed in an array; at least one recording step is implemented, and the recording step comprises the steps that a recording light beam is projected to the pixelated diffractive lens array, and the recording light beam is irradiated to one side of the volume holographic material after being emitted by the pixelated diffractive lens array; and projecting a reference light beam to the other side of the volume holographic material, irradiating the reference light beam to the volume holographic material and interfering with the recording light beam to form holographic pixel units in one-to-one correspondence with the target diffraction lens sub-units. The volume holographic element prepared by the preparation method has high diffraction efficiency and high transmittance, and the presented 3D image also has the advantages of low crosstalk, no depth flipping, no self-repetition image and the like.

A raw material composition for preparing a modified polyurethane optical material belongs to the technical field of optical material chemistry, and comprises the following components: 45-55 parts by weight of polyisocyanate; 35 to 45 parts by weight of tris (2-mercaptoethylthio) methane as shown in a formula I; and 25 to 40 parts by weight of 1, 3-bis (thiophenyl)-2-propyl acrylate. The modified polyurethane optical material obtained by polymerization reaction of the composition has high transmittance and refractive index and good mechanical properties, and is suitable for optical components with high requirements on refractive index. .

A polarization conversion transmission type reconfigurable metamaterial structure with amplitude-phase independent regulation and control is formed by copying and translating n * n basic units, and each basic unit comprises three dielectric layers, five metal layers and two air layers; the dielectric layers comprise a first dielectric layer, a second dielectric layer and a third dielectric layer from top to bottom; a first air layer is arranged between the first dielectric layer and the second dielectric layer, and a second air layer is arranged between the second dielectric layer and the third dielectric layer; the amplitude regulation and control layer is located on the upper surface of the first dielectric layer, and the amplitude regulation and control bias circuit layer is located on the lower surface of the first dielectric layer; the polarization conversion phase regulation and control layer is located on the upper surface of the second dielectric layer, and the polarization conversion phase regulation and control bias circuit layer is located on the lower surface of the second dielectric layer; the polarization gate layer is located on the upper surface of the third dielectric layer. According to the invention, efficient electromagnetic regulation and control in a transmission mode are realized, independent regulation and control in two dimensions of amplitude and phase are realized, and unification of high transmissivity and accurate regulation and control in a microwave frequency band is realized.

The invention belongs to the technical field of silicon dioxide preparation, and particularly relates to a preparation method of a spherical silicon dioxide anti-blocking agent for a plastic film, and the method comprises the following steps: 1) preparing spherical silicon dioxide particles by a flame method; and 2) carrying out surface modification on silicon dioxide. According to the prepared silicon dioxide anti-blocking agent, the content of SiO2 is 90%-99.9%, the content of iron is smaller than or equal to 0.01 ppm, the content of sodium ions is smaller than or equal to 0.6 ppm, and the silicon dioxide anti-blocking agent has the advantages of being narrow in particle size distribution (D50: 150-1000 nm), excellent in dispersity, low in oil absorption value (15-30 mL / 100 g) and the like. The modified silicon dioxide is compounded with a plastic matrix to prepare a film, and compared with a plastic film without the silicon dioxide anti-blocking agent, the silicon dioxide anti-blocking agent can remarkably improve the anti-blocking performance and mechanical properties of the plastic film, for example, the tensile strength is improved by 10-30%, the elongation at break is improved by 10-30%, and the light transmittance is larger than 92%. Meanwhile, the thermal oxidation yellowing phenomenon caused by metal ions can be effectively inhibited.

The invention relates to the field of optical thin films, in particular to a preparation method of an optical diffusion film. A preparation method of an optical diffusion film comprises the following steps: uniformly mixing a curing agent and polydimethylsiloxane, curing, and then carrying out oxygen plasma treatment and room temperature aging treatment to obtain a polydimethylsiloxane flat plate; dissolving PET particles and PMMA particles in a solvent to obtain a polymer solution; and placing a polydimethylsiloxane flat plate above the polymer solution, and standing to obtain the optical diffusion film. According to the application, PMMA is used as a high glass transition temperature component to be blended with PET, so that the overall glass transition temperature of a blending system is improved, and the practicability of the optical diffusion film in a high-temperature environment is improved; strong scattering is provided through the refractive index difference between air holes and a polymer phase, and a refractive index gradient is formed by using the refractive index difference between PET and PMMA, so that a secondary scattering interface is formed, and light absorption is reduced and high transmittance is maintained while high haze is ensured.

The invention relates to the technical field of optical films, and discloses a PET-based composite optical film and a preparation method thereof.The optical film is prepared from 100 parts of PET master batch, 5-10 parts of anti-blue-light nanofiller and 1-3 parts of interfacial compatibilizer through melt extrusion, asynchronous two-way stretching, online anti-fingerprint coating liquid coating and cooling and rolling; the blue-light-resistant nano filler is a core-shell structure filler prepared by taking KH570 silanized nano cerium oxide as a core, polymerizing by grafting glycidyl methacrylate to form a shell layer, and then reacting with 1H-benzotriazole-1-methanol. The anti-fingerprint coating liquid is prepared from perfluoropolyether modified siloxane acrylate and nano silicon dioxide sol. Through core-shell filler design and functional coating online coating, the technical problems that inorganic nanoparticles are easy to agglomerate and organic small molecule auxiliary agents are easy to migrate are synergistically solved, and the obtained optical film has excellent properties of high light transmittance, low haze, efficient blue light resistance and lasting fingerprint resistance and is good in durability.

The invention discloses a high-light-transmittance heat-insulation super-hydrophobic composite coating as well as a preparation method and application thereof, and relates to the technical field of coating preparation. The composite coating provided by the invention comprises a heat-insulating coating positioned on a bottom layer and a super-hydrophobic coating positioned on a top layer, wherein the heat-insulating coating comprises a binder and heat-insulating material particles dispersed in the binder; the super-hydrophobic coating comprises a micro-nano composite structure composed of modified silicon dioxide nanoparticles and fumed silica nanoparticles, the modified silicon dioxide nanoparticles are silicon dioxide nanoparticles which are prepared through hydrophobic treatment and have the particle size of 80-150 nm, and the mass ratio of the modified silicon dioxide nanoparticles to the fumed silica nanoparticles with the particle size of 15-30 nm is (0.2-0.4) g: (0.1-0.2) g; according to the composite coating provided by the invention, the light transmittance and the hydrophobicity of the composite coating are synergistically improved by regulating and controlling the proportion of silicon dioxide with different scales while the light transmittance, heat insulation and surface super-hydrophobicity are realized.

The invention provides a transparent bulletproof ceramic composite structure with an electric heating function and a preparation method of the transparent bulletproof ceramic composite structure. The composite structure comprises an anti-splashing layer (1), a first middle layer film (2), a multi-layer stacked structure (3) of glass sheets and films, a first transition layer (4), an electric heating film layer (5), a second transition layer (6), a ceramic layer (7), a first antireflection film layer (8), a second antireflection film layer (9), a third antireflection film layer (10), a second middle layer film (11), an inorganic glass layer (12), a third transition layer (13) and an anti-static layer (14) which are arranged in sequence. The composite structure provided by the invention has excellent impact resistance and bulletproof grade, can effectively resist the damage of high-speed elastic sheets or impact objects, and meets the requirements of high-safety application scenes such as weapon armors, armed airplanes and high-speed trains; and the anti-static film has clear optical observation capability, high transmissivity and anti-static property.

The invention discloses a heat-insulating film with self-adjusting light transmittance and high heat insulation and a preparation method thereof, and relates to the technical field of heat-insulating films. The preparation method comprises the following steps: preparing aerogel slurry from aerogel powder, an auxiliary agent, water and a resin emulsion, preparing a photoresponse gel layer from a polymeric monomer and a photoresponse monomer, preparing a metal photosensitive coating from a metal oxide, a surfactant and a silane coupling agent, coating a substrate with the aerogel slurry, and drying to obtain the thermal insulation film. The light response gel layer continues to be attached to the slurry coating, after drying, the light sensation coating continues to be attached to the light response gel layer, and finally a layer of base material is attached to the upper portion. The heat-insulating film provided by the invention not only has the functions of blocking infrared rays and ultraviolet rays and insulating heat, but also has the function of self-adjusting the light transmittance, the light transmittance can be adjusted according to the external temperature, the light transmittance can be reduced in high-temperature weather, and the high light transmittance can be kept in low-temperature weather.