▎ 摘　　要

NOVELTY - Preparing highly endothermic modified hydrophilic polydimethylsiloxane (PDMS) solar fresh water collecting reactor comprises (i) mixing polydimethylsiloxane pre-polymer and curing agent uniformly, and vacuumizing to remove the bubbles in the mixed solution to obtain polydimethylsiloxane mixed solution; (ii) placing the hydrophilic material in order, covering a layer of mixture composed of easily soluble particles and dark heat absorbing particles on the upper surface, and centrifuging until the mixture completely fills the gap of the hydrophilic material; (iii) adding polydimethylsiloxane mixed solution, centrifuging, until the polydimethylsiloxane completely fills the gap between particles, heating and solidifying to obtain a black solid; and (iv) placing the black solid into the solvent, dissolving the easily soluble particulate matter to obtain the highly endothermic modified hydrophilic polydimethylsiloxane solar fresh water collecting reactor. USE - The method is useful for preparing highly endothermic modified hydrophilic polydimethylsiloxane solar fresh water collecting reactor, which is useful in preparing solar absorbent or solar absorber (claimed). ADVANTAGE - The water collecting reactor is porous and elastomer material, has low density, can float on the water surface, and has excellent light absorbing ability and photo-thermal conversion ability. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for highly endothermic modified hydrophilic polydimethylsiloxane solar fresh water collecting reactor; #using method of highly endothermic modified hydrophilic polydimethylsiloxane solar fresh water collecting reactor comprising doping the capillary and/or paper fiber into high heat absorption modified hydrophilic polydimethylsiloxane solar fresh water collecting reactor; and #a solar fresh water collecting reactor comprising the highly endothermic modified hydrophilic polydimethylsiloxane solar fresh water collection reactor, and capillary tubes and/or paper fibers, where the capillary tubes and/or paper fibers are doped into high endothermic modified hydrophilic polydimethylsiloxane solar fresh water collection reactor.