Title: Device and method for preparing polytetrafluoro ethylene-carbon powder nano composite material
Application Number: 200610045783 Application Date: 2006.01.24
Publication Number: 1821300 Publication Date: 2006.08.23
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: C08L27/18,C08K3/04,H01M8/02
Applicant(s) Name: Dalian Univ. of Science and Engineering Address: 116024
Inventor(s) Name: Yin Jianzhong, Zhu Che, Liu Runjie
Attorney & Agent: wei maocai
Abstract:
     The apparatus and process of preparing nanometer composite polytetrafluoro ethylene-carbon powder material belongs to the field of fuel cell technology and nanometer composite organic-inorganic material technology. The process of preparing the nanometer composite polytetrafluoro ethylene-carbon powder material includes: setting PTFE in 1-10 g/L inside high pressure reactor to react at 8-30 MPa pressure and 35-100 deg.c temperature for 5-20 hr and pressure released in the speed of 0.5-1.5 MPa/min or 5-20 to obtain product of 10-200 nm granularity; drying, filtering, liquefying and pressurizing CO2 to high pressure reactor for mixing with PTFE; opening trimming valve after CO2 and PTFE reach dissolving balance, mixing CO2 PTFE carbon powder and spraying through the nozzle; final phase separation and collecting composite PTFE carbon powder particle; and recovering CO2; and collecting product after the system reaches normal pressure.
Time: 13
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