Patent ID: 11897162
Assignee: ZHEJIANG A & F UNIVERSITY
Field: Machine tools (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A method for preparing a piezoresistive sensor material, comprising:
a first step of treating a wood powder with an ionic liquid, and subjecting a resulting wood powder to solation, chemical crosslinking-gelation, and lyophilization to obtain a wood fiber aerogel;
a second step of soaking the aerogel in an alkaline buffer of dopamine hydrochloride to conduct self-polymerization on the surface of the aerogel for 10 hours to 14 hours to obtain a wood fiber-based hydrogel deposited with polydopamine;
a third step of soaking the wood fiber-based hydrogel in a nano conductive phase suspension or a nano conductive phase precursor for 10 hours to 24 hours, and compressing the liquid in the wood fiber-based hydrogel, and repeating the step operations 3 to 5 times to form a conductive phase-loaded wood fiber-based hydrogel;
a fourth step of subjecting the conductive phase-loaded wood fiber-based hydrogel to reaction with an aqueous solution comprising a polyelectrolyte monomer, a crosslinker, an initiator and a catalyst at 40° C. to 60° C. for 12 hours to 24 hours to form a conductive phase-wood fiber-based hydrogel composite; and
a fifth step of soaking the conductive phase-wood fiber-based hydrogel composite in an aqueous solution of a metal ionic compound for 6 hours to 24 hours of complexation to form the piezoresistive sensor material.