94 results about "Polybutyl methacrylate" patented technology

The invention relates to the technical field of coating liquid, and particularly discloses anti-reflection self-cleaning type coating liquid as well as a preparation method and application thereof. The invention provides anti-reflection self-cleaning type coating liquid. The anti-reflection self-cleaning type coating liquid is specifically prepared from, by weight, 12-18 parts of polymethyl methacrylate, 5-8 parts of composite sol, 3-6 parts of silane, 2-4 parts of inorganic materials, 1-3 parts of an anti-reflection agent and 30-40 parts of a solvent. The composite sol is obtained by carrying out water bath heat preservation reaction treatment on a natural polymer colloid and a styrene-acrylonitrile-glycidyl methacrylate copolymer through a dopamine hydrochloride aqueous solution; the inorganic material is formed by mixing silicon dioxide with the particle size of 10-30 nm and silicon dioxide with the particle size of 40-70 nm according to the weight ratio of (0.5-1.5): (5-8). The anti-reflection self-cleaning coating liquid prepared by the invention can obviously improve the light transmittance and self-cleaning property of photovoltaic glass; and the durability and the stability of the coating layer are excellent.

The invention relates to a perovskite solar cell and a preparation method thereof, a photovoltaic module, a system and an electric device. The perovskite solar cell comprises a transparent electrode layer, and a perovskite layer, an electron transport layer and a metal electrode which are sequentially arranged on the transparent electrode layer; the electron transport layer comprises an organic electron transport material, a first additive and a second additive; the first additive is prepared from one or more of polymethyl methacrylate, a methacrylic acid-methyl methacrylate copolymer, a 4-vinylpyridine-styrene copolymer, polyacrylonitrile and poly (4-vinylpyridine); the second additive comprises one or more of a compound shown as a formula I and a compound shown as a formula II. The perovskite solar cell provided by the invention has relatively high photoelectric conversion efficiency and relatively good stability.

Thin polymer films may comprise a first polymer layer comprising poly(vinylidene fluoride); a second polymer layer comprising poly(vinylidene fluoride); and a nanofiller-polymer layer interposed between the first polymer layer and the second polymer layer, the nanofiller-polymer layer comprising poly(methyl methacrylate) and nanosheets dispersed in the poly(methyl methacrylate); the nanosheets comprising mica nanosheets and / or hexagonal boron-nitride nanosheets; wherein 50-99% of the nanosheets in the nanofiller-polymer layer are oriented parallel to a width dimension of the first polymer layer.

The invention discloses a colored fluorescent particle for electrophoretic display, and relates to the field of photoelectric display, the colored fluorescent particle is of a core-shell structure, and the colored fluorescent particle sequentially comprises a core, a middle layer and a shell layer from inside to outside; the core is a pigment unit, the middle layer is a quantum dot layer coating the surfaces of pigment particles, the shell layer comprises one or more high-molecular polymers selected from polylauryl methacrylate and polymethyl methacrylate, and the surface of the middle layer is coated with the shell layer; the color fluorescent particles comprise intrinsic primary colors presented by the pigment units and compensation fluorescence excited by the quantum dot layer under light; and the compensation fluorescence is matched with the intrinsic primary color. In addition, the invention also provides a preparation process of the colored fluorescent particles. The colored fluorescent electrophoretic particle provided by the invention is pure and full in color and luster, and is more gorgeous in color under the excitation of ultraviolet rays.

The invention relates to a gel electrolyte, a preparation method thereof and an electrochromic device. The gel electrolyte comprises an electrolyte salt, a polymer matrix and a solvent, the polymer matrix comprises polymethyl methacrylate, the solvent is acetamide, and the molar ratio of the electrolyte salt to the solvent is 1: (4-8). A specific type of solvent and a specific type of polymer matrix interact with the electrolyte salt, and the ratio of the electrolyte salt to acetamide is controlled, so that a stable eutectic phase and a gel network structure can be formed, a channel is provided for ion transmission, and the ionic conductivity of the gel electrolyte is effectively improved; and when the gel electrolyte with the gel network structure is used for the electrochromic device, relatively high optical contrast and relatively high response speed can be obtained, and the electrochromic device can be rapidly discolored under low voltage.

The invention relates to the field of folding screen glass cover plates, and particularly discloses a UTG laminated assembly for a folding screen and a preparation method of the UTG laminated assembly. The UTG laminated assembly for the folding screen sequentially comprises a functional base film layer, a first thermoplastic polymer layer, an ultra-thin glass layer and a second thermoplastic polymer layer from top to bottom, the functional base film layer is prepared from the following raw materials in parts by weight: polyimide resin, polyarylene ether nitrile, gas-phase nano silicon dioxide, polypentafluoropropyl methacrylate, modified black phosphorus quantum dots, grafted microcrystalline cellulose, an accelerant and an ultraviolet light absorber; the grafted microcrystalline cellulose is obtained by grafting polymethyl methacrylate on microcrystalline cellulose; the modified black phosphorus quantum dots are obtained by modifying black phosphorus quantum dots through a zinc-based metal organic framework material. The UTG laminated assembly is high in impact resistance and can have high hardness and light transmittance, and it can be guaranteed that the folding screen has good appearance and visual experience after being used for a long time.

The invention discloses an anti-fouling easy-to-clean coating and a preparation method thereof, and relates to the technical field of coatings. The invention discloses an anti-fouling easy-to-clean coating. The coating comprises the following raw materials in parts by weight: 30-50 parts of polymethyl methacrylate, 10-15 parts of modified nano titanium dioxide, 20-30 parts of a fluorocarbon polymer, 3-8 parts of a silane coupling agent, 8-12 parts of nano zinc oxide, 5-10 parts of a plasticizer, 2-6 parts of a dispersant, 1-3 parts of a leveling agent, 4-8 parts of a cross-linking agent, 1-3 parts of an antioxidant, 3-7 parts of a modified cellulose derivative and 2-5 parts of an antibacterial agent. And 5-10 parts of a modified shape memory polymer microcapsule. The anti-fouling and easy-to-clean coating disclosed by the invention is high in anti-fouling property, and the fluorocarbon polymer and the modified nano titanium dioxide are cooperated, so that stains are difficult to attach and can be decomposed by photocatalysis; cleaning is easy, and stains can be easily removed due to the low surface; the water seepage resistance is good, and the special modified cellulose derivative effectively blocks moisture; the antibacterial effect is good, and various microorganisms can be inhibited; and the self-repairing capability is also achieved, recovery can be achieved after damage, the service life is greatly prolonged, and the material protection requirement is comprehensively met.

The invention prepares a hydrophilic small-particle polybutadiene latex by copolymerizing a hydrophilic monomer with butadiene, then constructs a transition layer on the surface of the small-particle latex, and then further expands the diameter and performs alkali treatment to obtain a large-particle polybutadiene latex with a hollow structure. The latex is used as a core latex, and monomers such as styrene, acrylonitrile and methyl methacrylate are swollen into the interior of the hollow microspheres by a swelling technology, and an oil-soluble initiator is added to initiate polymerization to form a pomegranate structure. Finally, a polystyrene layer and a polymethyl methacrylate layer are constructed on the surface to prepare a MABS graft copolymer, and the transparent ABS resin can be obtained by melt blending with an MSAN resin.

The invention provides a wide-temperature-range high-damping polyurethane IPN material, and in the preparation of the polyurethane IPN material, the R value of polyurethane is accurately controlled to be 1, so that an isocyanate group (-NCO) and a hydroxyl group (-OH) in polyhydric alcohol are completely reacted in a stoichiometric ratio, and a stable carbamate group (-NH-COO-) is generated. A polybutyl methacrylate molecular chain introduced into the system contains strong polar ester groups (-COO <->), and the polar groups and-NH <-> in carbamate groups form strong intermolecular hydrogen bonds. The multiple hydrogen bonds interact to jointly form a complex network structure of the IPN material, and the hydrogen bonds between the hard segment and the soft segment of the polyurethane and the interface hydrogen bonds between the polyurethane and the polybutyl methacrylate have a synergistic effect, so that the internal friction between molecular chains is remarkably increased. The multi-layer and multi-type intermolecular acting force synergistic effect enables the polyurethane IPN material to show more excellent damping performance.

The invention discloses special multifunctional glass with magnetic shielding and shock resistance. The special multifunctional glass sequentially comprises a polymethyl methacrylate layer, a short-wave liquid crystal silver ion liquid crystal film layer, a silicon dioxide high-barium optical glass layer, a silicon dioxide tungsten silver ion liquefaction layer, a nickel wire mesh layer and a polymethyl methacrylate layer from a critical plane, the polymethyl methacrylate layer close to the critical surface is doped with 1% of samarium ions; according to the preparation method, compression and hot melting glue clamping are adopted. 1% of samarium ions are doped in polymethyl methacrylate close to a critical plane, radiation corrosion and ionization discoloration can be controlled, the short-wave liquid crystal silver ion liquid crystal film belongs to cathode and anode diode plasma electric control, and the transparency impression degree is reduced as much as possible in the operation process, so that radiation is further reduced; the silicon dioxide high-barium optical glass is used for conventional light transmission, the silicon dioxide tungsten silver ion liquefaction layer is used for blocking 75% of short-wave gamma rays, and the nickel wire mesh can be used for radiation protection measures in emergency situations and maintenance states.

A protective mask suited for quick regulatory approval and mass production to provide protective use of a wearer includes a mask body having a major portion forming at least one breathing opening configured for holding a filter. The mask body forms a cover contoured to cover, except for the at least one breathing opening, the wearer's mouth and nose when the mask is worn. The mask body further has a flange, wherein a length of the flange extends along a major portion of an edge of the mask body major portion, the flange being configured for pressing against the wearer's face when the mask is worn. The mask body is a material selected from the group consisting of polyethylene terephthalate, polyethylene terephthalate glycol, and poly methyl methacrylate, and combinations thereof.

The invention discloses an ultraviolet light modulated depletion type graphene field effect transistor (UV-GFET) and a preparation method thereof. The ultraviolet light modulated depletion type graphene field effect transistor sequentially comprises a Si / SiO2 substrate layer, a metal electrode layer, a graphene film sensing layer and a quantum dot doped insulated gate layer from bottom to top, and the top of graphene is covered with a polymethyl methacrylate (PMMA) organic matter thin layer containing quantum dots to serve as a gate insulating layer. When quantum dots in the PMMA thin layer release hole-electron pairs under the irradiation of ultraviolet light due to a photoelectric effect, the hole concentration is reduced and the conductivity is reduced after graphene absorbs electrons, so that the resistance of the GFET is increased, and the function of regulating and controlling the resistance of the depletion type graphene field effect transistor through ultraviolet light is realized.

The application discloses a perovskite quantum dot enhanced diffusion plate and a preparation method thereof, and relates to the technical field of optical elements. The preparation method comprises the following steps: heating and smelting inorganic glass raw materials and quantum dot precursors, quenching and cooling, tempering and crystallizing, obtaining quantum dot glass, grinding and granulating the quantum dot glass to obtain quantum dot glass powder, mixing modified polymethyl methacrylate, the quantum dot glass powder and diffusion particles, and then adding the mixture into an injection molding machine to perform extrusion, and finally obtaining the perovskite quantum dot enhanced diffusion plate. The methyl methacrylate is modified, the problem that the charge encounters great obstruction when being transmitted between the quantum dot and the methyl methacrylate is solved, and the luminous efficiency of the diffusion plate is improved.

A perovskite solar cell and a preparation method therefor, a photovoltaic module, a system, and an electric device. The perovskite solar cell comprises a transparent electrode layer, and a perovskite layer, an electron transport layer, and a metal electrode which are sequentially arranged on the transparent electrode layer; the electron transport layer comprises an organic electron transport material, a first additive, and a second additive; the first additive comprises one or more of poly(methyl methacrylate), a methacrylic acid-methyl methacrylate copolymer, a 4-vinylpyridine-styrene copolymer, polyacrylonitrile, and poly(4-vinylpyridine); and the second additive comprises one or more of a compound of formula I and a compound of formula II. The perovskite solar cell has high photoelectric conversion efficiency and good stability.

The application discloses an up-conversion circular polarization fluorescent device of perovskite quantum dots, which comprises, from bottom to top, a light-transmitting glass substrate, a parallel orientation layer, a reflection layer, a transparent separation layer and a composite nanomaterial layer; the reflection layer is a polymer cholesteric liquid crystal layer; the transparent separation layer is made of one of polymethyl methacrylate and polyvinyl alcohol; the composite nanocrystal material layer is composed of perovskite quantum dots / up-conversion nanocrystal composite nanomaterial; the perovskite quantum dots / up-conversion nanocrystal composite nanomaterial is prepared by an in-situ synthesis method. The device has the properties of circular polarization luminescence and up-conversion circular polarization luminescence, and has excellent performances such as high stability, high energy transfer efficiency, high radiation intensity and good repeatability.

A method for producing a polymethyl methacrylate plate includes the steps of providing a mould that includes at least one gasket which is enclosed between two substantially parallel mould parts, introducing liquid including methyl methacrylate prepolymer and / or methyl methacrylate monomer in the mould and enabling polymerization of the liquid methyl methacrylate. A gasket is used in a mould for producing a polymethyl methacrylate plate.

Thin polymer films may comprise a first polymer layer comprising poly(vinylidene fluoride); a second polymer layer comprising poly(vinylidene fluoride); and a nanofiller-polymer layer interposed between the first polymer layer and the second polymer layer, the nanofiller-polymer layer comprising poly(methyl methacrylate) and nanosheets dispersed in the poly(methyl methacrylate); the nanosheets comprising mica nanosheets and / or hexagonal boron-nitride nanosheets; wherein 50-99% of the nanosheets in the nanofiller-polymer layer are oriented parallel to a width dimension of the first polymer layer.

The invention relates to the technical field of lens masks, in particular to an expressway LED transparent lens mask and a preparation method thereof.The expressway LED transparent lens mask is prepared from, by weight, 80-90 parts of poly (methyl methacrylate)-b-poly (glycidyl methacrylate) block copolymer (PMMA-b-PGMA); 0.5 to 2.0 parts of nano-scale cerium doped zinc oxide (Ce-ZnO) quantum dots; 5 to 10 parts of a random ethylene-methyl acrylate-glycidyl methacrylate terpolymer; 1 to 3 parts of photochromic spiropyrane derivative modified silicon dioxide nanoparticles; according to the present invention, the high light transmittance is ensured, the active sites are provided through the PGMA block so as to easily achieve the uniform dispersion and the chemical bonding of other functional components, and the nano-scale cerium-doped zinc oxide (Ce-ZnO) quantum dots are introduced so as to achieve the efficient ultraviolet ray blocking and the light stability;

The utility model relates to the technical field of glass panels, and discloses a highly anti-dazzle and highly light-transmitting glass panel, which comprises a main body mechanism and an auxiliary mechanism, the auxiliary mechanism is positioned at the outer end of the main body mechanism, the main body mechanism comprises a highly light-transmitting glass body, a polystyrene layer I and a polymethyl methacrylate layer I, the first polystyrene layer is fixedly arranged on the outer side of the high-transmittance glass body. According to the high-anti-dazzle and high-light-transmittance glass panel, through installation of the main body mechanism, the polystyrene layer is a transparent high polymer which is wide in application range and good in insulativity, and the polymethyl methacrylate layer is an important high polymer transparent material, has high transparency and can resist many chemicals; the anti-reflection layer can realize light transmission to a greater extent without sacrificing image quality, the anti-dazzle film is a micro pattern or rough texture located on the surface of the base material or under the outer layer of the base material, reflected light on the surface is decomposed by using a diffusion mechanism, and the safety of the panel is effectively improved.

The application provides a kind of poly (methyl methacrylate) and polyethylene glycol blend asymmetric nanofiltration membrane and application, the poly (methyl methacrylate) and polyethylene glycol blend asymmetric nanofiltration membrane, poly (methyl methacrylate) (PMMA) and polyethylene glycol (PEG) two polymers are stirred and dissolved in N, N-dimethylformamide solvent to form casting solution, the nanofiltration membrane of specific thickness is prepared by doctor blade, then, the prepared nanofiltration membrane is placed in fume hood and stands, based on the different solvent evaporation rates of upper layer and bottom of nanofiltration membrane, form a blend asymmetric nanofiltration membrane with dense structure, immerse the blend asymmetric nanofiltration membrane in deionized water, remove the solvent by phase transfer method, and then solidify the membrane; in the process of membrane preparation, poly (methyl methacrylate) is the main support material, polyethylene glycol is the pore former and hydrophilic material, and the membrane realizes efficient separation and removal of neutral chlorophenol disinfection by-products with molecular weight ≤200 in water.

The invention relates to the field of films, in particular to a BOPP matt film with optimized cutting performance based on paper-plastic lamination and a preparation method of the BOPP matt film. The BOPP matt film comprises a matt layer, a core layer and a lower surface layer; the matt layer is prepared from polypropylene random copolymer, 40 to 55 weight percent of high-density polyethylene and 5 to 10 weight percent of polymethyl methacrylate-poly (butyl acrylate)-polymethyl methacrylate triblock copolymer; the core layer is prepared from homo-polypropylene, 10 to 15 weight percent of styrene-maleic anhydride copolymer and 3 to 8 weight percent of maleic anhydride grafted polypropylene; and the lower surface layer comprises homo-polypropylene. The components of the core layer and the matt layer are optimized, the brittleness of the core layer and the matt layer is improved, and the fracture resistance is reduced, so that after a laminated product obtained by laminating the BOPP matt film and paper is cut and broken, the length of a tail film is shortened, even the tail film is not generated, the application requirements of downstream customers are met, and high-speed automatic production can be realized.

The invention discloses a high-impact-resistance composite bulletproof mask and a preparation method thereof, and relates to the technical field of bulletproof masks. The bulletproof mask comprises an outer layer, a middle layer and an inner layer, the outer layer is made of borosilicate glass, the middle layer is made of polymethyl methacrylate, the inner layer is made of polycarbonate, and after the multiple layers are bonded and compounded through acrylate bonding materials, the two ends of an inner layer polycarbonate plate are longer than the middle layer and outer layer materials. And the epitaxial part of the substrate is bonded with the borosilicate glass plate and the side plate of the polymethyl methacrylate plate at the same time to form a coated structure. The bulletproof mask can effectively fix the outer layer and the middle layer, when the bulletproof mask is impacted by bullets, the coating layer can provide reverse tensile stress, the layering phenomenon is reduced, the range of a center impact point fragmentation area is reduced, no fragments fly out, the problems of impact interface layering and fragment splashing are effectively solved, and the integrity and stability of the structure are improved.

The present invention relates to a quantitative CT bone density measurement phantom with replaceable calibration solid columns and a supporting method, aiming to solve the problems of insufficient measurement accuracy and lack of personalized adaptability of the existing QCT phantom due to the fixed calibration column design. The phantom includes a main body and a plurality of calibration solid columns, and the main body is provided with at least one card slot, through which calibration solid columns of different density levels can be connected to achieve adaptation to different bone densities. The matching calibration solid column determination method obtains its CT value by scanning a plurality of calibration solid columns made of a mixture of hydroxyapatite powder and polymethyl methacrylate, and then establishes a linear regression model of density and CT value. Combined with the expected density range of the bone to be measured, a suitable calibration solid column is selected for CT scanning, and the actual bone density value of the bone to be measured is calculated based on the regression model. The invention improves the calibration flexibility and measurement accuracy, and can effectively meet the personalized measurement needs of different bone areas.

A composition includes particular amounts of a poly(methyl methacrylate), a poly(carbonate-siloxane), an acrylic impact modifier, a polyethylene, and a siloxane-containing anti-scratch additive. The composition can exhibit a desirable combination of good mechanical properties and scratch resistance. Methods of making the composition and articles comprising the composition are also disclosed.

The present invention belongs to the technical field of holographic polymer materials, and specifically relates to a photopolymer holographic storage material, a holographic optical disc and a preparation method thereof. The photopolymer holographic storage material is prepared from raw materials in the following mass ratio: MMA: NMP: AIBN: PQ = 100: 5-25: 0.7-1: 1-1.5. The photopolymer holographic storage material is doped with NMP (N-methylpyrrolidone) in PQ / PMMA (phenanthrenequinone / polymethyl methacrylate) to significantly improve the optical properties of the material.

The application provides a kind of nanometer crack-based underwater acoustic sensor and its preparation method, belongs to hydrophone technical field.The method first, in the flexible polymer surface deposition a layer of metal film, spin coating a layer of photoresist on the metal film surface of flexible polymer, photoresist and metal film patterning;Second, the photoresist on the metal film is again patterned;Third, the flexible polymer and metal film are bent to produce nanometer crack on the metal film;Finally, the flexible polymer, polymethyl methacrylate, glass sheet are bonded, and after injecting pure water in the cavity, it is sealed to obtain underwater acoustic sensor.The nanometer crack-based underwater acoustic sensor manufactured by the application has ultra-high sensitivity, by bonding the nanometer crack sensing unit with ultra-high sensitivity and flexibility on the substrate with cavity, the ultra-sensitive detection of low-frequency underwater acoustic can be realized, and the detection range of the underwater acoustic sensor is improved.

The application provides monodisperse polymethyl methacrylate surface modified microspheres and a preparation method thereof, and belongs to the technical field of microsphere modification. The preparation method comprises the following steps: ultrasonic dispersion is performed on monodisperse polymethyl methacrylate microspheres and an organic solvent to obtain pretreated polymethyl methacrylate microsphere suspension; the pretreated polymethyl methacrylate microsphere suspension, a modifier and a catalyst are reacted to obtain monodisperse polymethyl methacrylate surface modified microspheres. The method can effectively maintain the uniform particle size advantage of the monodisperse PMMA microspheres; the modification uniformity is good, the functional group is controllable; the performance of the microsphere body is not damaged; the surface activity of the modified monodisperse PMMA microspheres is significantly improved, and the dispersibility and compatibility are greatly improved.

The present application relates to the technical field of lens mask, especially to a highway LED transparent lens mask and a preparation method thereof, which comprises the following components by weight: 80-90 parts of poly(methyl methacrylate)-b-poly(glycidyl methacrylate) block copolymer (PMMA-b-PGMA); 0.5-2.0 parts of nano-scale cerium-doped zinc oxide (Ce-ZnO) quantum dots; 5-10 parts of random ethylene-methyl acrylate-glycidyl methacrylate terpolymer; 1-3 parts of photochromic spiropyran derivative modified silica nanoparticles; and 1-3 parts of hyperbranched fluorinated polyether. The high light transmittance is ensured, and the active sites are provided through the PGMA block, which is conducive to the uniform dispersion and chemical bonding of other functional components. The nano-scale cerium-doped zinc oxide (Ce-ZnO) quantum dots are introduced to realize efficient ultraviolet blocking and light stability.

This invention relates to the field of polymer molding technology, specifically to a high-temperature resistant, dimensionally stable acrylic sheet and its preparation and shaping process, comprising the following components: 80-95 parts by weight of polymethyl methacrylate matrix resin, 5-20 parts by weight of isoborneol methacrylate, 2-6 parts by weight of nano-silica, 0.4-1.2 parts by weight of silane coupling agent, 0.2-0.6 parts by weight of initiator, 0.5-1.5 parts by weight of crosslinking agent, 0.1-0.4 parts by weight of antioxidant, 0.1-0.3 parts by weight of light stabilizer, and 0.05-0.2 parts by weight of release agent. By introducing isoborneol methacrylate as a comonomer into the polymethyl methacrylate matrix, the glass transition temperature of the polymer is significantly increased by utilizing the cyclic rigid groups in its molecular structure. Combined with the reinforcing effect of nano-silica, the high-temperature resistance of the acrylic sheet is significantly improved, with a heat distortion temperature and Vicat softening temperature significantly higher than those of ordinary acrylic sheets.