9results about How to "Low haze" patented technology

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.

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 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.

This invention relates to the field of multilayer curable base film technology, specifically to the online coating of polyester optically curable base films and its preparation method. This invention overcomes the problem in existing technologies where the adhesion and optical performance of the curable base film cannot be simultaneously achieved. First, this invention obtains core-shell structured functional particles by modifying in-situ polymethyl methacrylate with nano-silica; second, it obtains modified PET by melt blending optical-grade PET chips; finally, it melts the functional particles and modified PET to obtain an anti-adhesion masterbatch, prepares a composite base film through three-layer co-extrusion and biaxial stretching, coats it with a functional coating liquid, cures it stepwise to form a curing layer, and then heat-sets it to obtain the optically curable base film. Through base film modification, functional particle core-shell design, three-layer co-extrusion structure, and the synergistic effect of coating and process, this invention produces a polyester optically curable base film that combines high optical performance and good coating adhesion, applicable to release protection in the electronics field, decoration in the home appliance field, and other fields.

The application belongs to the field of resin synthesis, and particularly relates to a synthesis method of polyvinyl butyral resin. The raw materials for preparing the PVB resin in the application include PVA, n-butyl aldehyde and glyoxal, and do not include emulsifiers and alkali metal inorganic salts. The PVB resin prepared by improving the feeding mode has excellent penetration resistance, the PVB film prepared from the PVB resin has low haze and high molecular weight, and is particularly suitable for application on automobile glass.

This invention relates to a method for fabricating a light-emitting element based on an ultra-smooth interface composite functional transparent conductive layer, comprising the following steps: (1) providing a substrate and performing epitaxial growth; (2) growing a composite functional layer with a thickness of 5-10 nm on the surface of the epitaxial structure; (3) polishing the composite functional layer to ensure that the surface roughness Ra < 0.2 nm; (4) defining the photonic crystal pattern and etching photonic crystal pre-holes in the composite functional layer; (5) depositing the composite transparent conductive layer: firstly, using an atomic layer deposition system (ALD), filling the photonic crystal pre-holes with an ITO material of an indium-tin weight ratio of 90:10, and then growing a second ITO layer with a thickness of 30 nm and an indium-tin weight ratio of 95:5 as a current diffusion layer by sputtering or ion beam deposition, and finally performing high-temperature thermal annealing; this invention optimizes the light extraction efficiency and current diffusion performance of the device by combining fundamental planarization of the substrate interface with the precise fabrication of nanophotonic structures.

The application provides a high-water-resistance optical film and a polarizing plate comprising the same, the high-water-resistance optical film comprising a base film, a water-resistance layer and a bondable layer; the structure of the high-water-resistance optical film comprising the water-resistance layer, the first bondable layer, the base film and the second bondable layer which are sequentially stacked, or the water-resistance layer, the base film and the second bondable layer which are sequentially stacked; the surface of the water-resistance layer having uniform and orderly arranged nano-protrusions and microporous structures. The high-water-resistance optical film has excellent hydrophobicity, and the water-resistance layer can efficiently absorb ultraviolet radiation, effectively preventing the problems of aging, yellowing, embrittlement and the like of the optical film caused by ultraviolet irradiation, and can be applied to the polarizing plate, greatly improving the service life of the polarizing plate.