Gemini type fluorine-carbon sufactant and preparing method

The present invention discloses a new-type double-ion type fluorocarbon surfactant. It is a double-ion type fluorocarbon surfactant using hydrophilic monoester dichloropropane as new-type hydrophilic flexible space group of coupling group, its chemical name is N,N,Ní»,Ní»-tetramethyl-N,Ní»-bis [(perfluoroalkyl sulamine)-alkyl]-2-monoester group-propylenediammonium. Said surfactant utilizes reaction of perfluoroalkyl sulfuryl fluoride and N,N-dimethyl-1,2-ethylenediamine or N,N-dimethyl-1,3-propylenediamine to obtain intermediate product N-[(dimethylamino)-alkyl] perfluoroalkyl sulfamine, then makes the intermediate product and monoester dichloropropane undergo the process of quaterisation so as to obtain the invented product.