Solar thermal insulation fiber is a material that can absorb visible light and near-infrared rays in solar radiation,
and can reflect human heat radiation, and has a thermal insulation function.It is based on the addition of Group IV transition metal carbides . When sunlight strikes, this carbide can o. More than 6ev of high-energy radiation is
absorbed and converted into heat, and radiation with energy below 0.6 eV is reflected and not absorbed. Most of the sun’s electromagnetic radiation can be absorbed by them and converted into heat energy