Method for preparing flexible electromagnetic shielding nanofiber film based on waste leather scrap hydrolysate

• Main Authors: ZHOU YINGYING, GAO DANGGE, GUO SHIHAO, LYU BIN, MA JIANZHONG
• Format: Patent
• Language: Chinese; English
• Published: 28.05.2021
• Subjects: APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBONFILAMENTS; BRAIDING; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS,THREADS, FIBRES, BRISTLES OR RIBBONS; COTTON-WOOL; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR; KNITTING; LACE-MAKING; LAUNDERING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS; NATURAL OR ARTIFICIAL THREADS OR FIBRES; NON-WOVEN FABRICS; PRINTED CIRCUITS; SPINNING; TEXTILES; TREATMENT OF TEXTILES OR THE LIKE; TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS,FABRICS, FEATHERS, OR FIBROUS GOODS MADE FROM SUCH MATERIALS; TRIMMINGS; WADDING

The invention discloses a method for preparing a flexible electromagnetic shielding nanofiber film based on waste leather scrap hydrolysate, and solves the problems that in the prior art, a metal electromagnetic interference shielding material is poor in flexibility and high in density. The method is simple in technology, and the conductivity and the maximum electromagnetic shielding effectiveness of the prepared flexible electromagnetic shielding nanofiber film are obviously improved. According to the technical scheme adopted by the invention, the method comprises the following steps: dechroming and hydrolyzing wet blue leather waste leather scraps generated in a leather making process through an acidification method to obtain the waste leather scrap hydrolysate, mixing the waste leather scrap hydrolysate with polyvinyl alcohol to prepare a waste leather scrap hydrolysate/polyvinyl alcohol nanofiber film through an electrostatic spinning method, further dipping the waste leather scrap hydrolysate/polyvinyl a