The　graphite　oxide　was　prepared　from　natural　graphite　by　the　modified　Hummers　method.　The　GO　was　modified　by　isophorone　diisocyanate　(IPDI)　to　obtain　functionalized　graphene　oxide　(IP-GO),　then　IP-GO　was　reduced　by　using　hydrazine　hydrate　to　prepare　IP-RGO　nanocomposites.　The　functionalized　graphene/PE　composite　films　were　subsequently　obtained　by　solution　coating　method　on　a　coating　machine.　Structures　and　properties　of　the　functionalized　graphene/PE　composite　films　were　characterized　by　FT-IR,　XRD,　XPS,　FE-SEM　and　digital　megger.　The　results　show　that　isocyanate　groups　remain　on　the　IP-RGO,　while　most　of　the　oxygen-containing　groups　on　GO　is　reduced,　and　its　electrical　conductivity　is　restored.　Meanwhile,　the　prepared　IP-RGO　are　evenly　dispersed　in　PE　matrix.　Comparing　to　pure　PE,　the　volume　resistivity　of　IP-RGO/PE　composite　film　is　decreased　by　about　seven　orders　of　magnitude　when　the　mass　fraction　of　IP-RGO　is　4%,　whose　antistatic　performance　improved　significantly.　©　2017,　Chongqing　Functional　Materials　Periodical　Press　Co.　Ltd.　All　right　reserved.