Reversible double-superaffinity film and its preparing process and application


Application Number: 00109176
Application Date: 2000.06.14
Publication Number: 1315476
Publication Date: 2001.10.03
Priority Information: 2000/3/29 CN 00103574.6
International: C09D1/00
Applicant(s) Name: Inst of Chemistry, Chinese Academy of Sciences
Address:
Inventor(s) Name: Wang Rong;Jiang Fengzhi;Song Yanlin
Patent Agency Code: 31002
Patent Agent: li bai
Abstract A process for preparing reversible double-superaffinity film includes such steps as adding metal salt (0.5-32 mol) to organic solvent (70-98 mol), ultrasonic dispersing, adding stabilizer (0.1-6 mol) and catalyst (0.01-1.63 mol), preparing transparent sol, coating it on surface of substrate, heating in muffle furnace at 550-720 deg.C for 0.05-1.5 hr to obtain transparent film and external field induction for 10 min-5 hr to obtain the said reversible double-superaffinity film containing nm TiO2 particles (80-98%) and nm metal oxide particles (2-20%). After the external field induction for removing the effect of double-superaffinity, the said film can lose its double-superaffinity.