Patent ID: 11964220
Assignee: GUANGDONG UNIVERSITY OF PETROCHEMICAL TECHNOLOGY
Field: Chemical engineering (Chemistry)
Classification: CPC B  C | IPC B  C

Claim 4:
5. The preparation method according to claim 1, wherein under the condition that the nanoparticle suspension comprises the silica-encapsulated Fe3O4 nanoparticle suspension, a mass ratio of Fe3O4 nanoparticle in the silica-encapsulated Fe3O4 nanoparticle suspension to modifiers in the modifier solution is 0.5:2.7 to 1.5:0.5; and
under the condition that the nanoparticle suspension comprises the nano-silica ethanol suspension, a mass ratio of silica nanoparticle in the nano-silica ethanol suspension to the modifiers in the modifier solution is 0.5:2.7 to 1.5:0.5.