Boron nitride/aluminum oxide composite membrane material as well as preparation method and application thereof

• Main Authors: DING SIYUAN, ZOU RUIPING, HUANG SONG, FAN WEIREN, LIU MINSU
• Format: Patent
• Language: Chinese; English
• Published: 04.06.2024
• Subjects: ARTIFICIAL STONE; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CEMENTS; CERAMICS; CHEMISTRY; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDINGMATERIALS; CONCRETE; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; LIME, MAGNESIA; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; METALLURGY; PRINTED CIRCUITS; REFRACTORIES; SLAG; TREATMENT OF NATURAL STONE

The invention discloses a boron nitride/aluminum oxide composite membrane material and a preparation method and application thereof.The preparation method comprises the following steps that alpha-phase aluminum oxide powder of any morphology and a nonionic surfactant are dispersed in an organic solvent, ultrasonic dispersion is conducted through a cell crusher, and aluminum oxide dispersion liquid is obtained; the preparation method comprises the following steps: proportioning boron nitride sheets, ball-milling balls and an organic solvent, carrying out ball milling, dispersing the ball-milled slurry in the organic solvent to obtain a ball-milling liquid dispersion, and carrying out ultrasonic dispersion on the ball-milling liquid dispersion by using a cell crusher to obtain a boron nitride dispersion; and mixing the aluminum oxide organic dispersion liquid and the boron nitride organic dispersion liquid, and then carrying out vacuum filtration, pressing, presintering and ultrahigh-temperature rapid sintering