Explosives coating was conducted by supercritical fluid anti-solvent (SAS)process. With viton F_{2602}

absolute ethylalcohol and CO

2

acts as coating substance

cosolvent and anti-solvent

respectively

the coating effect was investigated by changing the temperature

pressure and speed of CO

2

. The state of coating was analyzed by measuring the performances of coated samples and an SEM observation on the surface of coated explosives. In a result

the temperature of the autoclave is the important parameter to affect the coating result. At the same time

pressure and speed of CO

2

have certain infulence. By controlling the operation parameters

a satisfactory quality of coated explosives was achieved.