▎ 摘　　要

NOVELTY - A photo-thermal body comprises a photo-thermal non-woven layer (1), a low heat-conducting coefficient barrier layer and a core-absorbing multifilament. The photo-thermal non-woven layer is adhered with the low heat-conducting coefficient barrier layer. The core-absorbing multifilament passes through the low heat-conducting coefficient barrier layer and is fixed on the photo-thermal non-woven layer. The photo-thermal non-woven layer is surface deposited graphene and/or carbon nano-tube of bovine horn melon fiber non-woven fabric. The low heat-conducting coefficient barrier layer is low heat-conducting coefficient material. The heat-conducting coefficient of material with low heat-conducting coefficient is 0.05-0.30 W/m.K. The core-absorbing multifilament is terylene multifilament, chinlon multifilament, polyimide multifilament or aramid multifilament. The length of the multifilament is greater than the thickness of the low thermal conductivity barrier layer. USE - Photo-thermal body used for generating solar steam. ADVANTAGE - The length of the core-absorbing multifilament is greater than the thickness of the low heat-conducting coefficient obstructing layer. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for a method for preparing terylene multifilament body, which involves: (A) preparing photo-thermal non-woven layer, where xhorn fiber is made into net by cross-lapping method; (B) preparing horned melon non-woven fabric by needling technology; (C) subjecting oxhornnon-woven fabric to graphene and/or carbon nano-tube deposition to prepare photo-thermalnon-woven fabric layer; (D) sewing the photo-thermalnon-woven layer and the low heat-conducting coefficient separating layer by a sewing process; (E) passing core absorbing multifilament through the low heat-conducting coefficient separating layer; and (F) adopting sewing technique to fix the core absorbing multifilament and the photo-thermal non-woven layer. DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of a photo-thermal body. Photo-thermal non-woven layer (1) Polystyrene foam (2) Terylene multifilament (3)