The unsaturated silicone modified graphene oxide(KGO)was synthesized by the modified Hummers meth-od,and the silicone coupling agent KH570 with excessive unsaturated carbon chains was used as the modifier to prepare the unsaturated silicone modified graphene oxide(KGO).High hydroxy-graphene/polyacrylate composite emulsion(KGO-PA)was prepared by reverse emulsion polymerization of KGO,methyl methacrylate(MMA),butyl acrylate(BA),hydroxyeth-yl methacrylate(HEM A)and acrylic acid(AA).The structure and properties of the composite were characterized by Fouri-er transform infrared spectroscopy(FTIR),X-ray photoelectron spectroscopy(XPS),scanning electron microscopy(SEM),thermogravimetric test(TGA)and stress-strain test.The test results showed that KH570 was successfully grafted onto GO surface,and the graphene oxide nanomaterials in the prepared KGO/PA composite were uniformly dispersed.When the content of TGO was 1.5%,the composite had the best thermal stability and mechanical properties.