4results about How to "Curl suppression" patented technology

The present application aims to provide a heat-sensitive recording body having good transparency while suppressing curling. A heat-sensitive recording body (1) has a base material (2) containing a transparent resin film, a heat-sensitive recording layer (3), and a protective layer (4) formed in this order on one surface of the base material (2), and a back-coating layer (5) containing a core-shell type resin and a polyamide epichlorohydrin resin formed on the other surface of the base material (2). The protective layer (4) preferably contains a top-coating layer (6) and an intermediate layer (7) formed between the top-coating layer (6) and the heat-sensitive recording layer (3).

The application provides a high-temperature-resistant and quick-dissolving fracturing fluid thickening agent and a preparation method thereof, and belongs to the technical field of oil and gas well fracturing, and comprises the following steps: mixing and stirring acrylamide, 2-acrylamido-2-methylpropanesulfonic acid, acrylic acid, octadecyl methacrylate, pAMPS, an ammonium sulfate solution and 4-vinylpyridine propyl sulfobetaine, adding an additive, adjusting the pH value to 5.0-5.5, adding azobisdimethylaminoformamide hydrochloride to continue the reaction, washing, separating, vacuum drying to obtain a high-temperature-resistant and salt-resistant copolymer powder; adding the high-temperature-resistant and salt-resistant copolymer powder into deionized water and mechanically stirring, adding malt dextrin, sodium citrate and a hydrophilic additive into the deionized water in sequence under continuous stirring, continuing to stir, sieving, spray drying and granulating to obtain the high-temperature-resistant and quick-dissolving fracturing fluid thickening agent. The application can improve the high-temperature-resistant performance and the dissolution rate.

The application belongs to the technical field of lithium batteries, and specifically discloses a high-temperature safety bottom-coated positive electrode current collector and application thereof in preparation of lithium batteries, which comprises a positive electrode aluminum foil and a bottom coating layer arranged on the surface of the positive electrode aluminum foil, the bottom coating layer is obtained by coating and curing of a bottom coating slurry, and the bottom coating slurry comprises aminopropylsilazane, silanized boehmite and hydroxylated boron nitride nanosheet; the aminopropylsilazane is prepared by condensation reaction of methylvinyl polysilazane and gamma-aminopropyl triethoxysilane; the silanized boehmite is prepared by reaction of boehmite and gamma-aminopropyl triethoxysilane; and the hydroxylated boron nitride nanosheet is prepared by hydroxyl treatment of hexagonal boron nitride powder. The surface group matching and in-plane orientation intercalation design of the aminopropylsilazane, the silanized boehmite and the hydroxylated boron nitride nanosheet make the bottom-coated positive electrode current collector have excellent interface bonding force, realize the unity of in-plane rapid heat dissipation and high-temperature structural locking, and the like.

This invention provides a method for manufacturing a wavelength conversion sheet that can suppress curling while thinning the wavelength conversion sheet. A method for manufacturing a wavelength conversion sheet includes the following steps 1 to 3: Step 1: Applying a quantum dot containing layer forming coating liquid to a first base coating having a first protective film for quantum dots having a first base coating, a first substrate, a first barrier layer, and a protective substrate for the first barrier layer, thereby forming a quantum dot containing layer, wherein the protective substrate for the first barrier layer is a substrate formed to be peelable from the first protective film for quantum dots; Step 2: Attaching the second base coating side of a second protective film for quantum dots having a second base coating, a second substrate, and a second barrier layer to the quantum dot containing layer, thereby obtaining a semi-finished wavelength conversion sheet; and Step 3: Irradiating the quantum dot containing layer of the semi-finished sheet with ultraviolet light.