137results about How to "Low haze" patented technology

The invention provides a high-water-resistance optical film and a polarizing plate comprising the same. The high-water-resistance optical film comprises a base film, a water-resistance layer and an adhesive layer, the structure of the high-water-resistance optical film comprises a water-resistance layer, a first adhesive layer, a base film and a second adhesive layer which are stacked in sequence, or the water-resistance layer, the base film and the second adhesive layer which are stacked in sequence, the surface of the waterproof layer is provided with nanometer protrusions and micropore structures which are uniformly and orderly arranged. The high-water-resistance optical film has excellent hydrophobicity, the water-resistance layer can efficiently absorb ultraviolet radiation, the problems of aging, yellowing, embrittlement and the like of the optical film caused by ultraviolet radiation are effectively prevented, the high-water-resistance optical film can be applied to a polarizing plate, and the service life of the polarizing plate is greatly prolonged.

The invention discloses a polyvinyl chloride high impact modifier and a preparation method thereof, and belongs to the field of polymer compound compositions. The raw materials of the polyvinyl chloride high impact modifier include a modified cyclodextrin core and a shell material, and the mass ratio of the two is 6.5-7.5:4. The impact modifier of the invention can effectively improve the impact resistance of polyvinyl chloride materials at low temperatures. According to the method in GB / T1043.1-2008, the impact strength of the sample at 0°C, -20°C, and -40°C is tested, and the impact strength at 0°C is 45.5-46.3KJ / m 2 The impact strength at ‑20°C is 39.8‑41.3KJ / m 2 The impact strength at ‑40°C is 33.6‑35.5KJ / m 2 .

The invention discloses low-lithium high-strength transparent microcrystalline glass and a preparation method thereof. The low-lithium high-strength transparent microcrystalline glass is prepared from the following raw materials: 7wt%-15wt% of Li2O, 2wt%-12wt% of Al2O3, 60wt%-78wt% of SiO2, 1wt%-4wt% of ZrO2, 1wt%-5wt% of P2O5, 0-1wt% of Na2O and 0-3wt% of K2O. The preparation method comprises the following steps: mixing the raw materials, melting, annealing and crystallizing to obtain the low-lithium high-strength transparent glass ceramic which is a glass ceramic product with high mechanical strength, high transmittance, low haze, low dielectric loss and high thermal conductivity, can meet the requirements of mobile phone cover plate glass on the glass ceramic, reduces the cost, has a very good market value, and is suitable for popularization and application. The high-strength transparent microcrystalline glass can be applied to a front cover and / or rear cover protection component in a cover plate material for a touch display product.

The invention discloses a low-haze anti-dazzle resin cover plate which comprises a plastic base body and a low-haze anti-dazzle coating, the plastic base body is coated with the low-haze anti-dazzle coating, the thickness of the plastic base body ranges from 0.05 mm to 6 mm, and the thickness of the low-haze anti-dazzle coating ranges from 5 micrometers to 20 micrometers. The plastic base layer is made of PET, PC, PMMA, a PC / PMMA composite material or PETG. The low-haze anti-dazzle coating mainly comprises the following components: two-functionality acrylic ester, three-functionality acrylic ester, six-functionality urethane acrylate, two-functionality urethane acrylate, a photoinitiator and a flatting agent. In order to solve the technical problems in the prior art, the low-haze anti-dazzle resin cover is prepared through phase separation of a crystalline component and an amorphous component of a coating. The low-haze anti-dazzle resin cover plate prepared by the invention has the characteristics of low haze, high definition and the like, and the scheme of the invention is simple in construction process, low in cost and good in coating uniformity.

According to the photopolymer system based on the fluorine-containing liquid crystal, the grating device and the preparation method of the grating device, the mixed liquid crystal containing the nematic liquid crystal and the fluorine-containing liquid crystal at the same time is adopted in the photopolymer system, and therefore the polarity and dielectric anisotropy of the mixed liquid crystal material are improved; the overall electro-optical performance, uniformity and stability of the photopolymer system are improved, so that a grating device prepared based on the photopolymer system has good optical characteristics of low haze while having relatively high diffraction efficiency. Specifically, fluorine-containing biphenyl liquid crystals, fluorine-containing alkyne liquid crystals and fluorine-containing difluoromethoxy liquid crystals of which the carbon atoms of flexible side chains are 2-5, and nematic liquid crystals of which the delta epsilon is not less than 10 are selected to jointly form mixed liquid crystals; and the balance and optimization between the diffraction efficiency and haze performance of the photopolymer system and the grating device prepared from the photopolymer system are realized.

The invention relates to the technical field of liquid silicone rubber, in particular to high-refractive-index low-haze addition type liquid silicone rubber and a preparation method thereof, and the high-refractive-index low-haze addition type liquid silicone rubber is prepared from vinyl silicone oil, a catalyst, an inhibitor, a cross-linking agent, hydrophobic white carbon black, a white carbon black surface treating agent and the like. According to the method, by regulating and controlling the surface state of the white carbon black and the refractive index of the silicone oil, the addition type liquid silicone rubber with high refractive index, high light transmittance and low haze at the same time is realized, and the addition type liquid silicone rubber is good in mechanical property and fluidity, can adapt to continuous extrusion production, and is suitable for large-scale production. After vulcanization, the Shore A hardness is 50-53, the light transmittance is 94% or above, the haze is lower than 3%, the refractive index reaches 1.54 or above, and the polyurethane resin can be applied to the fields of optical devices, LED packaging and the like.

The invention belongs to the technical field of thin film materials, and discloses an anti-adhesion and smooth nylon master batch as well as a preparation method and application thereof. The nylon master batch is prepared from the following raw materials: inorganic powder, a surface treating agent and nylon resin, the inorganic powder comprises silicon dioxide and / or glass beads, and the surface treating agent comprises fatty acid amide, (carboxyl decyl) terminated-polydimethylsiloxane and hexamethylenediamine. The nylon master batch provided by the invention also has the advantages of low net passing pressure, less film breaking times, no precipitation and the like caused by excellent dispersing performance on the basis of preventing the adhesion of the nylon film, and is particularly suitable for production of high-transparency nylon films, nylon base material films for high-speed packaging, especially nylon packaging films for shallow printing; and the influence on film transparency, corona treatment and printing composition is little.

The invention discloses a regenerated polypropylene composite material, which comprises the following components: 90-97 parts of regenerated polypropylene; 0.3 to 0.8 part of nano porous silicate; 3-8 parts of a toughening / transparent agent; 0.05 to 0.2 part of an anti-precipitation agent; and the anti-precipitation agent is selected from bis (2, 6-di-tert-butyl-4-methylphenyl) pentaerythritol diphosphate ester. By adding the nano-porous silicate with specific parameters, the odor of the regenerated polypropylene can be effectively adsorbed, the dissolved substance can be reduced, and the transparency cannot be obviously reduced; meanwhile, the anti-precipitation agent can improve the formation of impurities in the processing process, and the impurities are precipitated on the surface, so that the haze is remarkably reduced, and the light transmittance is improved; furthermore, by selecting a toughening / transparent agent, not only can the toughness be improved, but also the transparency of the regenerated polypropylene composite material can be improved, and compared with other types of toughening agents, xylene soluble substances can be further reduced. The regenerated polypropylene composite material provided by the invention has the advantages of qualified dissolved substance detection, high transparency, low odor and good toughness.

The invention provides a liquid optical adhesive, a folding screen protective film and a folding screen, the liquid optical adhesive comprises a component A and a component B, the component A comprises a catalyst, and the component B comprises vinyl polyborosiloxane, a hydrogen-containing cross-linking agent, vinyl-terminated silicone rubber, vinyl silicone resin, a tackifier and an inhibitor; vinyl polyborosiloxane with specific parts is introduced into the component B to be matched with other components, so that the obtained liquid optical cement has a non-bovine characteristic, the cohesion strength of an adhesive film obtained after curing is remarkably improved, and then the liquid optical cement can have excellent ball falling resistance and pen falling resistance and is excellent in impact resistance; meanwhile, the film also has relatively high light transmittance, relatively low haze and excellent adhesion performance, is used for preparing the folding screen protection film, and can ensure that the obtained folding screen protection film can effectively protect a folding screen.

The invention relates to heat insulation type fireproof composite glass as well as a preparation method and application thereof. The glass comprises a counter-fire glass layer which comprises counter-fire glass; the heat insulation layer is arranged on the surface of the counter-fire glass layer; the heat insulation layer comprises a fiber aerogel core layer; a first potassium silicate gel layer and a second potassium silicate gel layer are arranged on the upper surface and the lower surface of the fiber aerogel core layer, and the counter-fire glass is connected with the heat insulation layer through the first potassium silicate gel layer; butyl rubber layers are arranged on the peripheries of the four vertical side faces of the fiber aerogel core layer. The back fire glass is arranged on the surface of the heat insulation layer, and the back fire glass layer comprises back fire glass; the back fire glass is connected with the heat insulation layer through a second potassium silicate gel layer; the surface of the butyl rubber layer is respectively connected with the counter-fire glass layer and the back-fire glass layer. The technical problem to be solved is how to prepare the glass which has good heat insulation and fireproof performance.

The invention belongs to the technical field of OCA optical cement, and discloses optical cement and a preparation method thereof. The optical adhesive is prepared from the following raw materials in parts by weight: 75 to 100 parts of acrylate prepolymer, 15 to 30 parts of diluent, 5 to 8 parts of acrylic acid, 10 to 20 parts of isobornyl methacrylate, 10 to 20 parts of silica sol, 2 to 3 parts of initiator, 0.5 to 3 parts of cross-linking agent and 0.5 to 3 parts of antioxidant. The acrylic resin is formed by polymerizing a hard monomer, a soft monomer and a functional monomer under the action of a photoinitiator. The optical adhesive prepared by the invention has good viscidity, is not easy to remain on a laminated display material, has high elongation and relatively good stripping property, meanwhile, the light transmittance and stability of the optical adhesive are improved by polymerization of the raw materials, and the optical adhesive is high in transparency, low in haze, free of shrinkage during curing and good in weather resistance.

The utility model relates to a modern agricultural seedling raising device convenient to operate, which comprises a seedling raising box and a seedling raising box component, universal wheels are mounted at the bottom of the seedling raising box, a heating pump is fixed on the outer wall of the left side of the seedling raising box, a first plastic film is adhered to the inner wall of the outer edge of the seedling raising box, and a second plastic film is arranged on the inner side of the first plastic film. The top end of the second plastic film adheres to the inner wall of the rear end of the top of the seedling raising box, a bracket assembly used for containing the seedling box assembly is installed on the inner side of the seedling raising box and comprises supporting plates, the multiple supporting plates are arranged on the inner side of the seedling raising box at equal intervals in the vertical direction, and positioning holes are formed in the left end and the right end of each supporting plate. First connecting rods are arranged on the left sides and the right sides of the front ends of the multiple supporting plates in a hinged mode, second connecting rods are arranged on the left sides and the right sides of the rear ends of the multiple supporting plates in a hinged mode, the second connecting rods are located right behind the first connecting rods, and a bottom wheel base is fixed to the middle of the bottom end of the bottommost supporting plate. The telescopic rod is fixed on the inner wall of the seedling box.

The invention discloses a high-transparency and low-haze PC fiber-added product and a preparation method thereof. Firstly, a semitransparent PCGF product is obtained by optimizing glass fibers, the infiltration effect of the glass fibers and PC resin is improved through polyacrylic resin (infiltration improver), the transmittance of the product is finally further improved, the haze is reduced, and the obtained product has the advantages of being high in transmittance, low in haze, high in modulus and the like and is widely applied to the field of electronic and electric appliances such as OA equipment.

The invention discloses an optical film, a preparation method thereof and a display device, and relates to the technical field of optical functional films. The optical film comprises a base film layer and an antistatic coating arranged on the surface of at least one side of the base film layer. The antistatic coating comprises the following raw material components: water-dispersible polyester resin, water-soluble resin, a cross-linking agent and an antistatic agent; the antistatic agent is obtained by compounding a single-walled carbon nanotube modified with a hydrophilic group and polyaniline acid, the antistatic agent comprises an inner core and a coating layer at least partially coating the inner core, the inner core comprises the single-walled carbon nanotube modified with the hydrophilic group, and the coating layer comprises the polyaniline acid. According to the optical film, the single-walled carbon nanotubes and the polyaniline acid form a composite conductive structure, and then the composite conductive structure is crosslinked with the water-soluble resin and the crosslinking agent to form a three-dimensional conductive network structure, so that the optical film obtains lasting and efficient antistatic performance with extremely low environmental humidity dependence on the premise of keeping high light transmittance, low haze and good coating adhesiveness.

This invention discloses an aqueous dispersion of a polyhydroxyalkanoate-grafted ethylene-acrylic acid copolymer with a self-emulsifying core-shell structure, its preparation method, and its recyclable paper packaging, belonging to the field of reactive modification of polymer materials and green packaging technology. This invention employs in-situ reactive extrusion technology to construct stable microparticles with a hydrophobic polyhydroxyalkanoate core and a hydrophilic ethylene-acrylic acid copolymer salt as the shell, overcoming the industry challenge of poor compatibility of bio-based materials. The aqueous dispersion requires no external emulsifier, achieving the same excellent barrier and heat-sealing effects with a lower coating weight, significantly reducing usage costs. Its unique alkali-induced swelling mechanism endows the coating with intelligent peeling properties, achieving efficient separation of the coating and fiber during resizing, greatly improving the purity of recycled fibers.

The present invention provides a novel polishing composition comprising a water-soluble polymer containing at least a vinyl alcohol resin having a side chain group having 3 or more carbon atoms.

The invention provides a coating with optical permeability and a preparation method thereof. The coating with optical permeability is prepared from the following raw materials in parts by mass: 25 parts of water-based acrylate copolymer emulsion, 25 to 35 parts of water, 0.8 to 1.5 parts of transparent functional particles, 16 to 20 parts of functional modified inorganic filler, 5.5 to 7.5 parts of boric acid ester-silanol-hydroxyl three-function cross-linked gel precursor solution, 0.2 to 0.5 part of thickening agent, 0.2 to 0.4 part of defoaming agent, 0.5 to 1 part of dispersing agent and 0.1 to 0.3 part of preservative. 0.2 to 0.5 part of an organic amine alcohol compound; the transparent functional particles comprise at least one of glass sand and cross-linked polymethyl methacrylate microspheres; the functional modified inorganic filler comprises at least one of amino silane modified snowflake white quartz sand and amino silane modified calcined sand white marble. The coating with optical permeability is suitable for the field of indoor and outdoor decoration.

One embodiment of the present invention relates to an optical film for being disposed in a display device, and a backlight unit comprising the optical film, the optical film comprising a base film, a pattern layer disposed on the base film and comprising a curved portion, and a coating layer disposed on the pattern layer, the coating may include a plurality of particles disposed continuously on at least a portion of the curved portion of the pattern layer, and a filler material disposed along the curved portion of the pattern layer and filling spaces between the plurality of particles.

The present invention discloses a flexible circuit board containing a transparent cover film and a preparation method thereof, comprising a transparent composite PI substrate and a transparent cover film formed on at least one side of the transparent composite PI substrate; the transparent composite PI substrate comprises a first copper foil layer, a first UV-resistant transparent polyimide layer, a first UV-resistant transparent adhesive layer and a second copper foil layer from top to bottom; the transparent cover film comprises a second UV-resistant transparent adhesive layer and a second UV-resistant transparent polyimide layer; the glass transition temperature of the first UV-resistant transparent polyimide layer and the glass transition temperature of the second UV-resistant transparent polyimide layer are both greater than 320°C. The circuit board of the present invention has extremely high transmittance, extremely low haze, resistance to QUV irradiation, high Tg, high deflection, low rebound force, voltage resistance and low CTE.

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 present invention addresses the problem of providing a methacrylic resin composition having high transparency, low haze, high heat resistance, high elastic modulus, and low water absorptivity; and providing a molded article thereof. Provided is a methacrylic copolymer comprising 5 to 96 mass% of a methyl methacrylate unit; 1 to 70 mass% of a structural unit (R) having in its main chain at least one ring structure selected from the group consisting of a glutaric anhydride unit and an N-substituted glutarimide unit; 1 to 48 mass% of an α-methylstyrene unit; and 1 to 48 mass% of a styrene unit, the N-substituted glutarimide unit being represented by the following formula (I): (wherein R1 and R2 are as described in the specification) .

The invention provides a high-transparency and low-haze polyethylene composite material as well as a preparation method and application thereof. The high-transparency and low-haze polyethylene composite material comprises linear low-density polyethylene (LLDPE), a composite nucleating agent microemulsion, an antioxidant and a lubricant. The composite nucleating agent micro-emulsion is prepared from sodium benzoate and lithium bis (fluorosulfonyl) imide under the action of a fluorinated polyester nonionic surfactant, all the components of the composite nucleating agent micro-emulsion are matched, the preparation technology of the composite nucleating agent micro-emulsion is adjusted, all the components and the technology are in synergistic interaction, and the composite nucleating agent micro-emulsion is prepared. The finally obtained polyethylene film has excellent transparency and haze and good appearance, and the application of the polyethylene film in different fields at present is met.

The invention relates to a photocuring composition, a hardened film and a preparation method and application of the hardened film. The photocuring composition comprises the following components: a urethane acrylate oligomer, an acrylate monomer, a reactive ultraviolet absorbent and a photoinitiator. A reactive ultraviolet absorbent is introduced into the hardened film, and is chemically bonded in a hardened layer polymer network through a UV photocuring technology, so that the problem of migration and precipitation of the ultraviolet absorbent is fundamentally solved.

The invention belongs to the field of high-performance polymers, and relates to an olefin copolymer elastomer and a preparation method thereof. The olefin copolymer elastomer contains an ethylene structural unit, a propylene structural unit, a structural unit derived from cycloolefin and a structural unit derived from norbornene containing exocyclic double bonds; the cycloolefin is selected from at least one of compounds as shown in a formula 1; the norbornene containing exocyclic double bonds is selected from at least one of compounds shown in a formula 2 and a formula 3; in the formula 1 # imgabs0 #, a is an integer from 0 to 10; r < 1 > to R < 12 > are respectively and independently selected from hydrogen, alkyl groups of C < 1 > to C < 20 > or naphthenic groups of C < 4 > to C < 20 >; in the formula 2 and the formula 3, b is an integer of 0-10; and R < 13 > to R < 19 > are respectively and independently hydrogen or alkyl with 1 to 20 carbon atoms. The olefin copolymer elastomer disclosed by the invention has the properties of high light transmittance, high refractive index, excellent mechanical properties, excellent elasticity and the like.

The present application discloses a heat-sealable BOPP film for cigarettes and a preparation method thereof, and relates to the technical field of BOPP film. Specifically, the film is prepared by direct co-extrusion of a three-layer structure of an outer layer, an interlayer and an inner layer. The raw materials include: polypropylene, propylene-ethylene copolymer, ethylene-methyl acrylate copolymer, crystalline tourmaline powder, 1,6-hexanediol diglycidyl ether, a mixture of trimethylsiloxyamino-terminated polydimethylsiloxane and hydroxyl-terminated methyl-3,3,3-trifluoropropyl polysiloxane, and polytetrafluoroethylene etched polyethylene wax powder. The etched crystalline tourmaline powder is prepared by etching crystalline tourmaline powder; the particle size of the crystalline tourmaline powder is 20-100nm; the thickness of the outer layer and the inner layer is 0.8-1.2μm, and the thickness of the interlayer is 18-22μm; the mechanical properties and thermal stability of the film can be improved; and the optical properties of the film are optimized by using nano-scale crystalline tourmaline powder.

The invention belongs to the technical field of high polymer material synthesis and preparation, and particularly relates to a preparation method of MBS (methyl methacrylate-butadiene-styrene) resin, which comprises the following steps: by taking styrene, acrylate monomers and toughened rubber particles as raw materials, under the combined action of an antioxidant, an initiator and a chain transfer agent, optimizing the technical process and adjusting the technical parameters, thereby obtaining the MBS resin. Three-stage key process steps of internal circulation prepolymerization, polymerization in a second-stage reactor and grafting in a static mixer are set, and the feeding proportion of reaction materials, catalytic materials and the like, and the reaction temperature, the stirring speed, the retention time, the solid content proportion and the like of each process step are accurately controlled. The prepared MBS resin is pure, low in odor, uniform in rubber particle distribution, adjustable in rubber content, high in grafting rate, good in transparency, low in haze and good in impact resistance. Compared with a traditional emulsion polymerization method, the preparation method has the advantages that the technological process is shortened, the operation stability is good, the investment and production cost is reduced, the environmental pollution is reduced, and the preparation method has good market prospects and application and popularization values.

The application relates to the technical field of glass, in particular to a manufacturing method, system and application of heat-bending-free 3D cover plate glass. The method utilizes laser to construct an induced prestress field on a glass substrate to release 50%-85% of target strain; then, single-side polishing fine adjustment is carried out, the polishing surface to be polished is divided into a center, an edge and a corner area, and stepped pressure is applied to compensate for the removal rate difference; a pressure buffer zone is dynamically generated at the junction of the areas, and the pressure is adjusted based on a smoothing algorithm to ensure that the first and second derivatives are continuous and the step mutation is eliminated. Through light-mechanical coupling stress regulation and dynamic continuous control, the application completely eliminates edge collapse and vibration marks, realizes micron-level curvature shaping, improves the glass surface type precision, optical uniformity and structural strength, and efficiently manufactures high-quality 3D cover plates without high-temperature heat bending.

The present invention relates to a retardation film formed of a resin containing a polymer having crystallinity, the retardation film having an NZ coefficient of less than 1.0 and a haze of less than 1.0%.

The invention discloses a polymerizable compound containing a chromophoric group for a reverse wavelength dispersion phase difference film and a liquid crystal composition thereof. According to the compound, benzothiazole is used as a chromophoric nucleus, strong electron-withdrawing trifluoromethyl is introduced to a specific position, and a side chain is connected through a thioether bond, so that high reverse wavelength dispersity, extremely high solubility and excellent compatibility with a conventional positive dispersion monomer are synchronously realized. After a liquid crystal composition containing the compound is subjected to orientation coating and photopolymerization, a high-transparency reverse wavelength dispersion phase difference film which is extremely low in haze, uniform in orientation and small in shrinkage stress can be prepared, the contradiction between the optical performance of an existing material and the stability of a film forming process is thoroughly solved, and the high-transparency reverse wavelength dispersion phase difference film is suitable for high-end OLED and Mini / Micro-LED wide-color-gamut displays.

This invention discloses a single-layer soft dental membrane and method for dental treatment or oral protection, belonging to the field of dental materials technology. The membrane is made of thermoplastic polyurethane elastomer (TPU) with a microphase separation structure and a hydrophilic modified layer containing polydopamine and hydrophilic polymer on its surface. The membrane has a Shore hardness of 75A-90A, a tensile strength of 15-50MPa, an elongation at break ≥500%, and a thickness of 0.5-6.0mm. The preparation method includes TPU drying, extrusion molding, plasma treatment, and hydrophilic coating impregnation reaction. The membrane of this invention has flexibility, durability, antibacterial properties, and high transparency, and its comprehensive performance is superior to that of existing EVA membranes. It can be used in dental whitening trays, sports mouthguards, or oral ulcer protection patches.