54results about How to "Low haze" patented technology

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 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 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 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 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 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 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.

The invention discloses an internally-added non-silicon release master batch, a preparation method and a release film with nanoscale roughness, preparation raw materials comprise PET resin I, a non-silicon release agent composition and an antioxidant, and the non-silicon release agent composition comprises polyester wax and oxidized polyethlene wax. According to the invention, polyester wax and oxidized polyethlene wax are compounded, and a release functional phase which is uniformly dispersed in nanoscale and has a stable interface is constructed in a PET matrix through a unique molecular synergistic effect and a processing technology matched with the polyester wax and the oxidized polyethlene wax, so that the fundamental contradiction that the surface of an internally added release film is rough and the release function is difficult to consider at the same time is solved; and meanwhile, silicon migration pollution is fundamentally eradicated, the process is simplified by utilizing an internal addition process, and recycling is facilitated.

The application provides a self-repairing silicone resin and a preparation method thereof, OCA optical glue containing the self-repairing silicone resin and application of the self-repairing silicone resin. The self-repairing silicone resin contains a disulfide bond and a mercapto group in a molecular structure. The content of the disulfide bond in the self-repairing silicone resin is greater than 0.6 mmol / g. The self-repairing silicone resin is used for preparing OCA optical glue. While ensuring high light transmittance, low yellowing and good mechanical properties of the OCA optical glue, the self-repairing silicone resin can improve the initial adhesion of the OCA optical glue, and can also endow the OCA optical glue with a self-repairing function and improve the repair efficiency.

Examples relate to thin films, transparent laminates, applications as cover films, and multilayer electronic devices incorporating the thin film, which possess excellent optical properties such as refractive index, haze, and yellowness, as well as excellent mechanical properties. The thin film includes an elastic layer with a refractive index of 1.48 to 1.58 and a low-temperature damage index (the difference between tensile modulus and tensile strength at a specific temperature), wherein the low-temperature damage index of the elastic layer at -40°C is below 1300 MPa.

The present invention relates to a uniaxially oriented polyethylene film, comprising multiple layers including an inner surface layer (I), an outer surface layer (O) and a core layer (C), wherein at least one of the multiple layers is made of a composition comprising from 70 to 100 wt.% of a multimodal high density polyethylene (HDPE) polymer component (PE1), based on the total weight of the respective layer composition, the PE1 component having: a) a melt flow rate MFR2 of from 0.1 to 2.0 g / 10min; b) a melt flow rate MFR5 of from 1.0 to 5.0 g / 10min; c) a melt flow rate ratio (MFR21 / MFR2) of from 30 to 90, the melt flow rates being determined according to ISO 1133; d) a density of more than or equal to 950 kg / m3; and e) a molecular weight distribution (Mw / Mn) of from 8 to 20, determined according to ISO 16014; and wherein the polyethylene film has a tensile modulus (1% secant) in machine direction (MD) of at least 1500 MPa, determined according to ASTM D882, and a tensile strength in machine direction (MD) of at least 160 MPa, determined according to ISO 527-3.

The invention belongs to the technical field of high polymer material synthesis and preparation, and particularly relates to a preparation method of MS (Murashige and Skoog) resin, which comprises the following steps: by taking styrene and acrylate monomers 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 MS 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 by accurately controlling the feeding proportion of reaction materials, catalytic materials and the like, and the reaction temperature, stirring speed, retention time, solid content proportion and the like of each process step, the high-efficiency and high-efficiency preparation of the catalyst is realized. The prepared MS resin product is pure, free of bubbles, low in product smell, good in transparency and low in haze, and has good market prospects and application and popularization values.

Provided is a surface protective film capable of achieving thickening of an adhesive layer, capable of exhibiting light peeling, and capable of achieving low haze. Also provided are an optical member and an electronic member to which such a surface protective film is attached. The surface protective film of the embodiment of the present application includes a urethane-based adhesive layer composed of a urethane-based adhesive formed from a urethane-based adhesive composition including a urethane prepolymer P, a polyol A, and a polyfunctional isocyanate compound B, the weight ratio of P to A being P:A=(50-99):(1-50), the polyol A including a first polyol A1 having a number average molecular weight Mn of 5000-20000 and a second polyol A2 having a number average molecular weight Mn of 300-4999, the weight ratio of A1 to A2 being 1.0≤(A1 / A2)≤3.5.

This invention relates to the field of luminescent polymer materials technology, and discloses a laminated glass interlayer and laminated glass, comprising the following components by weight: 100 parts polyvinyl butyral resin; 30 to 50 parts plasticizer; 0.05 to 1.5 parts photosensitizer; 0.6 to 4.5 parts annihilation agent; and appropriate amounts of maleic anhydride graft compatibilizer and hydrophobic fumed silica. The photosensitizer absorbs short-wavelength light and induces intersystem crossing, non-radiatively transferring triplet energy to the annihilation agent; two triplet annihilation agent molecules collide, merging their energy to generate singlet excitons and radiate fluorescence, completing the triplet-to-triplet annihilation upconversion mechanism. This invention utilizes a plasticized microenvironment to achieve random dispersion of luminescent guest molecules, avoiding physical phase separation and light scattering caused by large-scale aggregation, thereby overcoming the solid-state concentration quenching phenomenon and enabling laminated glass products to achieve both wavelength conversion function and high light transmittance and purity.

The invention discloses an epoxy modified organic silicon adhesive as well as a preparation method and application thereof, and belongs to the technical field of organic silicon adhesives. The epoxy modified organic silicon adhesive comprises a component A and a component B, the component A is prepared from the following raw materials: first double-end vinyl polysiloxane, epoxy silicon resin, vinyl silicon resin, a silane coupling agent and a catalyst; the component B comprises the following raw materials: second double-end vinyl polysiloxane, double-end hydrogen-containing silicone oil, side hydrogen-containing silicone oil and an inhibitor; the structural formula of the epoxy silicon resin is shown as a formula I. The epoxy silicone resin and the silane coupling agent are compounded to be used as a tackifier to be added into the organic silicone adhesive, and meanwhile, the side hydrogen-containing silicone oil is added as a cross-linking agent, so that the adhesive property and cohesive strength of the adhesive can be improved through multiple mechanisms; the epoxy modified organic silicon adhesive with good compatibility, high transparency, low haze, good cohesive strength and good adhesive performance is obtained. # imgabs0 #

The present invention discloses an aging-resistant PETG shrink film for protecting thin-film solar cells, wherein the shrink film layer structure is a three-layer structure of A / B / A; wherein the raw materials of the A layer include PET modified with NPG and a functional masterbatch; and the raw materials of the B layer include PET, PETG, an antioxidant and a light stabilizer. The present invention effectively reduces the production cost while ensuring the efficacy, and the surface layer of the film has good printability and heat-sealing properties, while also achieving the characteristics of high light transmittance, low haze and high transparency of the film, and improving durability.

The application discloses an intrinsic flame-retardant PMMA resin material, a flame-retardant resin composition, a preparation method and application, and belongs to the technical field of flame-retardant modification of PMMA resin materials.The intrinsic flame-retardant PMMA resin material comprises the following raw materials: 70-95 parts of MMA, 5-30 parts of a halogen-free flame retardant and 0.01-0.05 parts of an initiator; meanwhile, in order to improve the flame-retardant effect, a transparent flame retardant is added to the above system to obtain a flame-retardant resin composition material.The intrinsic flame-retardant PMMA resin material is prepared by introducing a flame-retardant monomer with the structure of 'MMA+ flame-retardant group' and copolymerizing with MMA, the intrinsic flame-retardant PMMA resin material improves the flame-retardant performance while maintaining the good light transmission performance and mechanical performance of the PMMA resin itself; meanwhile, the transparent flame retardant is introduced into the system, the two kinds of flame retardants produce a compounding synergistic effect, and the prepared flame-retardant resin composition material has excellent flame-retardant performance, light transmission performance and mechanical performance.

The application provides a low-temperature laminated co-extrusion adhesive film and a preparation method and a photovoltaic module, and relates to the technical field of photovoltaic devices.The low-temperature laminated co-extrusion adhesive film comprises a laminated EVA film layer and a TPO film layer, and the EVA film layer and the TPO film layer are fused at the interface part; the content of vinyl acetate in the EVA film layer is 15-40%, and the crosslinking degree of EVA is not less than 65%; the raw material for forming the TPO film layer comprises an ethylene-alpha olefin copolymer; the melt index of the ethylene-alpha olefin copolymer is 0.5-10 g / 10 min, and the melting point is 50-115 DEG C; the light transmittance of the low-temperature laminated co-extrusion adhesive film for light with a wavelength of 380-1100 nm is greater than 88%. The low-temperature laminated co-extrusion adhesive film provided by the application not only can realize low-temperature crosslinking, but also has high bonding performance with a base material and long-term anti-creep performance.

The application provides a kind of polyamide and its preparation method and application, the polyamide includes diamin residue and diacid residue;The diamin residue includes 2,2'-dimethyl-4,4'-methylene bis (cyclohexylamine) residue;The diacid residue includes 1,4-cyclohexane dicarboxylic acid residue and 1,12-dodecyl diacid residue;With the total molar amount of diacid residue as 100mol%, the molar percentage content of 1,4-cyclohexane dicarboxylic acid residue is 14~29mol%.The polyamide has excellent UV aging resistance and toughness, while it can also maintain high light transmittance and low haze, can meet the strict demand of high-end glasses market for material long-term beauty and durability.

The application discloses modified hexagonal boron nitride nanosheets, modified hexagonal boron nitride nanosheet / PVB composite films, and a preparation method and application thereof, wherein the preparation method of the modified hexagonal boron nitride nanosheets comprises the following steps: ball milling of hexagonal boron nitride powder, water dispersion, ultrasonic treatment, three-stage gradient centrifugal treatment, and drying of supernatant. The application realizes a synergistic balance of high transparency, low haze and high in-plane thermal conductivity under a lower filler content, and is suitable for the fields of transparent heat dissipation films, flexible electronic heat management layers, display device transparent heat conduction layers and optoelectronic device packaging.

The application discloses a PLA copolymer polycarbonate biaxial stretching film and a preparation method thereof, and belongs to the technical field of high polymer materials. The film is prepared from 100 parts of PLA copolymer polycarbonate, 0.3-0.6 parts of a chain extender, 0.5-1.0 parts of an anti-hydrolysis agent, 0.1-0.2 parts of a lubricant, 0.1-0.3 parts of a primary antioxidant and 0.2-0.4 parts of a secondary antioxidant through melt extrusion, biaxial stretching and heat setting. The film has high heat resistance, high light transmittance, low haze and excellent processing stability through unique molecular structure design, synergistic system of additives and fine biaxial stretching process, the tensile strength retention rate of the film at 80 DEG C is greater than or equal to 80%, and the film can be used in the fields of optics, high-barrier packaging and industry.

The application belongs to the technical field of high polymer materials, and particularly relates to a heat-resistant blister packaging box and a preparation method thereof. According to weight parts, the heat-resistant blister packaging box comprises the following raw materials: 100 parts of polylactic acid, 4-8 parts of heat-resistant stabilizer, 1-3 parts of nucleating agent, 0.5-1 parts of chain-extending compatibilizer, 0.1-0.5 parts of antioxidant, and 0.1-0.3 parts of release agent. The application designs a multifunctional heat-resistant stabilizer with an aromatic imide-sulfone-siloxane structure, and constructs a synergistic crystallization system with a phenyl zinc phosphonate nucleating agent, and cooperates with a segmented temperature control rapid heat setting process. The heat distortion temperature of the obtained blister packaging box can reach 93.1 DEG C, the light transmittance is kept above 89.5%, the haze is below 3.5%, the forming cycle is shortened to 6-10 seconds, and there is no small molecule migration risk, so that the industrial production needs of the heat-resistant transparent packaging for food contact are met.

The invention belongs to the technical field of high polymer material synthesis and preparation, and particularly relates to a preparation method of MABS (methyl acrylonitrile butadiene styrene) resin, which comprises the following steps: by taking styrene, acrylate monomers, acrylonitrile 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 MABS resin. Three-stage key process steps of internal circulation prepolymerization, three-stage reactor polymerization and grafting in a static mixer are set, and by accurately controlling 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, the high-temperature-resistant and high-temperature-resistant polymer is obtained. The prepared MABS resin product is pure, low in odor, uniform in rubber particle distribution, high in grafting rate, good in transparency, low in haze and good in impact resistance, and has good market prospects and application and popularization values.

The present application belongs to the technical field of polymer, and particularly relates to a transparent thermoplastic elastomer composition with controllable hardness, comprising polymer A and polymer B; the polymer A is SEBS, wherein the EB segment is a hydrogenated diene polymer segment with a random structure and / or a 1,2 structure content greater than or equal to 60%; the polymer B is a polymer with full hydrogenation of aryl and olefin groups in SBS. The present application also includes preparation and application of the composition. The composition can achieve high light transmittance, low haze and controllable hardness effect.

The utility model discloses a kind of frosted sunglasses, with frosted base layer, frosted base layer is in the outside surface of lens base layer by injection molding and is formed frosted layer integrally, the roughness Ra of the outside frosted layer of frosted base layer is controlled in 0.8-1.5 microns range, a layer REVO film layer is formed in the outside vacuum evaporation of frosted base layer, a layer of antireflection film layer is formed in the inside vacuum evaporation of frosted base layer, a layer of hard wear-resistant layer is formed on the surface of REVO film layer and antireflection film layer each, a layer of waterproof layer is formed in the surface vacuum evaporation of two layers of hard wear-resistant layer respectively, a layer of oil-proof layer is formed in the surface vacuum evaporation of two layers of waterproof layer respectively.The utility model under the premise of keeping frosted texture, effectively reduce lens haze, provide good visual experience for user, and frosted texture is stable, suitable for doing high degree of lens, optical performance is excellent, and service performance is reliable, luminousness reaches 13.42%, reflectivity reaches front 12.67%, back 3.64%, haze is less than or equal to 1.5%, and definition is greater than or equal to 28.