Abstract A novel chain extender was synthesized containing fluorine element 1, 4-bis (4- amino-2-trifluoromethyloxyphenyl) benzene (BAFB). Then BAFB was used to prepare a series of fluorine containing polyurethane elastomers (FPUEs) with different fluorine contents. The structures and properties of FPUEs were measured by fourier transform infrared spectroscopy, thermogravimetric analysis, microscale combustion colorimeter ( ...