▎ 摘　　要

NOVELTY - Preparing oxidized graphene coated urea-formaldehyde resin paraffin microcapsule material involves adding urea, resorcinol, ammonium chloride and paraffin to deionized water at room temperature and raising the temperature to 60 degrees C. The mixture is stirred for a certain period of time and heated at room temperature. The formaldehyde solution is added and mixture is stirred for 1-5 hours. The mixture is washed and dried to obtain microcapsules. The oxidized graphene and the cationic surfactant i.e. cetyltrimethyl ammonium bromide are added to deionized water. USE - Method for preparing oxidized graphene coated urea-formaldehyde resin paraffin microcapsule material (claimed). ADVANTAGE - The method enables to prepare oxidized graphene coated urea-formaldehyde resin paraffin microcapsule material that has uniform size distribution, high thermal conductivity and high enthalpy value. DETAILED DESCRIPTION - Preparing oxidized graphene coated urea-formaldehyde resin paraffin microcapsule material involves adding urea, resorcinol, ammonium chloride and paraffin to deionized water at room temperature and raising the temperature to 60 degrees C. The mixture is stirred for a certain period of time and heated at room temperature. The formaldehyde solution is added and mixture is stirred for 1-5 hours. The mixture is washed and dried to obtain microcapsules. The oxidized graphene and the cationic surfactant i.e. cetyltrimethyl ammonium bromide are added to deionized water. The obtained microcapsule powder is added to anionic surfactant i.e. sodium dodecylbenzenesulfonate for ultrasonic dispersion. The microcapsule powder and anionic surfactant are ultrasonically dispersed in water for 10-30 minutes to obtain oxidized graphene dispersion. The obtained oxidized graphene dispersion is stirred for 0.5-1 hour, filtered, washed and dried to obtain final product. The microcapsule material is double-layer core-shell structure and the outermost layer is oxidized graphene.