▎ 摘　　要

NOVELTY - Preparing triblock polymer graft reduction graphene oxide composite material comprises (i) mixing dihydroxy-terminated polydimethylsiloxane with dehydrating agent, 4-cyanovaleric acid dithiobenzoic acid, catalyst and solvent, and carrying out first grafting reaction to obtain a macromolecular chain transfer agent, (ii) mixing macromolecular chain transfer agent obtained in the step (i) with an initiator, N-isopropylacrylamide and a solvent, and carrying out a polymerization reaction to obtain an intermediate, (iii) mixing intermediate obtained in the step (ii) with a reducing agent, dimethylphenyl phosphorus and a solvent, and carrying out a reduction reaction to obtain a triblock polymer, and (iv) mixing the triblock polymer obtained in the step (iii) with the reduced graphene oxide modified by polydopamine and a solvent, and carrying out second grafting reaction to obtain the finished product. USE - The material is useful in collecting fog water (claimed). ADVANTAGE - The method: grafts hydrophobic polymer on N-isopropyl acrylamide; rebounds water vapor in air to N-isopropyl acrylamide or slides fog absorbed by it onto N-isopropyl acrylamide; accelerates fog adsorption; reduces lower critical solution temperature of N-isopropylacrylamide; weakens cross-linking degree of N-isopropylacrylamide polymer; increases volume shrinkage ratio; and improves desorption efficiency of fog water; reduces graphene oxide having photothermal conversion properties, which converts solar energy into thermal energy; quickly increases temperature around the composite material; and provides driving force for the phase conversion of the polymer, so as to improve adsorption and desorption efficiency of fog water. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a triblock polymer graft reduction graphene oxide composite material prepared by the above-mentioned method.