Patent ID: 11891728
Assignee: SOUTHERN UNIVERSITY OF SCIENCE AND TECHNOLOGY
Field: Materials, metallurgy (Chemistry)
Classification: CPC D  C | IPC C  D

Claim 15:
16. The preparation method according to claim 1, comprising steps of:
mixing the liquid polycarbosilane and the zirconium-containing polymer with a mass ratio of (1-5):1 at 18 to 25° C., and magnetically stirring the mixture for 1 to 5 hours to obtain the hybrid spinning solution with a viscosity of 0.5 to 10 Pa·s;
after charging the hybrid spinning solution into a glass injector, performing the electrospinning for 1 to 10 hours under conditions including an output voltage of 10 to 30 kV, an injection flow of 1 to 5 mL/h and a fiber collecting distance on a flat aluminum foil of 5 to 20 cm to obtain the SiC/ZrC composite fiber precursor; and
heating the SiC/ZrC composite fiber precursor obtained in step W to 100 to 180° C. at a rate of 1 to 5° C./min in a protective atmosphere for crosslinking for 1 to 5 hours, and finally heating to 1300 to 1800° C. at a rate of 1 to 15° C./min in the protective atmosphere for the thermal treatment for 1 to 5 hours to obtain the SiC/ZrC composite fiber.