▎ 摘　　要

NOVELTY - Producing modified graphene oxide comprises providing graphene oxide, providing a surfactant, and mixing the graphene oxide and the surfactant. USE - The method is useful for producing modified graphene oxide that is useful in a composite material used as an electrical insulation material, a heat conductor and/or as a heat sink or a cooling element for electrical and combustion components in an electronic device such as computer, mobile phone, plasma screen, LCD monitor and LED picture screen (all claimed). ADVANTAGE - The method is capable of economically, simply and time-efficiently producing the modified graphene oxide with high purity and hydrophilic and/or hydrophobic properties in a labor-efficient manner. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a composite material incorporating a modified graphene oxide, which is dispersed in a polymer matrix material.