Preparation technology of ceramic shielding sheet for wireless charging and ceramic shielding sheet

• Main Authors: GUO QINGWEN, XU KEXIN, WU CHANGHE, XIONG MING, MA FEI, SHI HAITAO, HU HUIXIN
• Format: Patent
• Language: Chinese; English
• Published: 06.07.2018
• 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 preparation technology of a ceramic shielding sheet for wireless charging. The preparation technology comprises the following steps: step 1, carrying out heat treatment on awound soft magnetic material strip; step 2, crushing the wound soft magnetic material strip subjected to the heat treatment into powder and preparing the powder into slurry; step 3, coating a naked surface of a ceramic substrate with the slurry to form a shielding layer with a certain thickness; sintering the ceramic substrate with the shielding layer to obtain the ceramic shielding sheet. The invention further discloses the ceramic shielding sheet; the ceramic shielding sheet comprises the ceramic substrate, the shielding layer and a PET (Polyethylene Terephthalate) film, wherein one naked surface of the ceramic substrate is coated with the shielding layer by utilizing a coating technology or a printing technology; the PET film is stuck on the outer surface of the shielding layer. The preparation technology of th