Material based on polytetrafluoroethylene and process for preparing the same

A process for preparing a material based on polytetrafluoroethylene, comprising:

• melt blending polytetrafluoroethylene (PTFE) and a processing aid as raw materials, followed by forming;
• wherein the processing aid is selected from one or more of thermoplastic polyurethane, polypropylene, polyethylene, polylactic acid, polyvinyl chloride, polyamide, polyvinyl alcohol, polyethylene glycol, polystyrene, poly (butyleneadipate-co-terephthalate), poly (methyl methacrylate), polyethylene terephthalate, polybutylene terephthalate, and paraffin;
• wherein the forming comprises extruding the raw materials after the melt blending to obtain an extrudate, then conducting hot pressing at a temperature below 370° C. to obtain a blended membrane, and maintaining the blended membrane under the temperature of the hot pressing for more than 30 minutes before cooling to room temperature;
• wherein the extrudate after extrusion can be a tube, a membrane, or a sheet.