Patent ID: 11901579
Assignee: JIANGSU HORIZON NEW ENERGY TECH CO., LTD.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 8:
9. The preparation method according to claim 8, wherein
a method of preparing the PE-PVDF porous substrate comprises:
adding a PE-PVDF mixture to a twin-screw extruder, and extruding PE-PVDF mixture after full melting and mixing to form a PE-PVDF cast sheet; and
a method of preparing the PVDF sheet comprises:
dissolving PVDF in a polar solvent to obtain a first resulting solution, heating and stirring the first resulting solution to make the PVDF fully dissolved to form a uniform casting solution;
adding a dispersant to the uniform casting solution to obtain a second resulting solution, and continuously stirring the second resulting solution by ultrasonic for 1-2 hours to make the dispersant occupy a larger hole position in the PVDF;
pouring the uniform casting solution onto a horizontal glass plate and heating the uniform casting solution to completely evaporate the polar solvent to form a crude PVDF sheet;
immersing the crude PVDF sheet in ethanol for an extraction, and fully dissolving the dispersant the crude PVDF sheet into the ethanol to obtain a processed PVDF sheet; and
drying the processed PVDF sheet to obtain the PVDF sheet.