Silicon carbide fiber composite felt and preparation method thereof

• Main Authors: HUANG XIAOZHONG, WANG CHUNQI, ZHOU GONGCHENG, TANG YUN
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2024
• Subjects: BRAIDING; COTTON-WOOL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS,NON-WOVEN FABRICS; KNITTING; LACE-MAKING; MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARYMATERIAL; NON-WOVEN FABRICS; TEXTILES; TRIMMINGS; WADDING

The invention discloses a silicon carbide fiber composite felt and a preparation method thereof.The preparation method comprises the steps that short silicon carbide fibers are subjected to plasma surface treatment, then one of short glass fibers and short carbon fibers and the short silicon carbide fibers are added into nano dispersion liquid, fiber suspension liquid is obtained, the fiber suspension liquid is subjected to dehydration forming, drying and curing, and the silicon carbide fiber composite felt is obtained. The preparation method comprises the following steps: firstly, carrying out surface treatment on chopped fibers through low-temperature plasma, introducing carboxyl, hydroxyl, carbonyl and other hydrophilic groups on the surfaces of silicon carbide fibers, improving the wettability of the surfaces of the silicon carbide fibers, and dispersing different fibers through a specific nano dispersing agent, so that the surface wettability of the silicon carbide fibers is improved. And finally, the si