▎ 摘　　要

NOVELTY - Preparing photo-thermal composite yarn involves respectively preparing carbon material dispersion liquid and carbon material slurry. The carbon material dispersion liquid comprises carbon material and dispersion medium. The carbon material slurry comprises carbon material, adhesive and solvent. The roving is processed by carbon material dispersion liquid and dried in coarse sand to obtain processed roving, where coarse sand is Tencel (RTM: Cellulose fiber), cotton or hemp. The processed roving is subjected to drafting and twisting to obtain composite yarn. The composite yarn is subjected to sizing, drying and winding to obtain photo-thermal yarn, where sizing agent uses carbon material sizing agent. The hydrophilic yarn and photo-thermal yarn are used for doubling for twisting to obtain photo-thermal composite yarn. USE - Method for preparing photo-thermal composite yarn for obtaining load-heat fabric of oxidized graphene used in seawater desalination or personal thermal management (all claimed), and obtaining woven fabric or knitted fabric, where fabric tissue structure is designed to realize specific effect. ADVANTAGE - The obtained photo-thermal composite yarn adjust the photo-thermal fabric heating rate and evaporation efficiency, and used for preparing woven fabric or knitted fabric, and fabric tissue structure is designed to realize specific effect. The hydrophilic yarn promotes the fast diffusion of the sweat, and photo-thermal yarn uses the heat generated by the outdoor sunlight to keep warm of the body Ventilation design makes steam and sweat quickly discharge after evaporation, which reduces local humidity and air saturation to ensure evaporation efficiency and comfortable wearing. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a load-heat fabric of oxidized graphene.