▎ 摘　　要

NOVELTY - A graphene modified polyether polyol has reduced graphene oxide introduced by chemical grafting into polyether initiator. The functionality of the polyether polyol is preferably 2.5-3.0 and the hydroxy value is preferably 200.0-205.0 mg potassium hydroxide/g. USE - Graphene modified polyether polyol for imitated latex polyurethane flexible foam. ADVANTAGE - The polyurethane foam has excellent tear resistance, durability, and a latex-like wet feel. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for the preparation of graphene-modified polyether polyol. The method involves adding 30% sodium nitrite solution to a compound containing one amino group and more than two hydroxy groups in the molar ratio of 1:1.2-1:1.5 with excessive inorganic acid comprising one or more of hydrochloric acid, sulfuric acid, perchloric acid, and fluoroboric acid, performing diazo reaction at 5-15 degrees C, reacting with reduced graphene oxide, adding into a pressure-resistant reaction kettle with one of phosphorus nitrile or alkali metal catalyst, mixing, replacing nitrogen gas until the oxygen content in the kettle is less than or equal to 50 ppm, heating to 100-110 degrees C at -0.09MPa to -0.095 MPa vacuum, dehydrating for 4-6 hours, heating to 110-115 degrees C, adding 20-30 wt.% (of the total amount) propylene oxide for primary polymerization, reacting for 1-1.5 hours, maintaining the temperature at 110-115 degrees C, adding the 20-30 wt.% (of epoxy compound) propylene oxide and 57-65 wt.% (of the epoxy compound) ethylene oxide for secondary polymerization, reacting for 0.5-1 hours, heating to 115-125 degrees C, adding 5-10 wt.% (of polyether polyol) ethylene oxide for tertiary polymerization, reacting 1-2 hours, vacuumizing for 0.5-1 hours removing the unreacted propylene oxide, ethylene oxide monomer, and other by-products, reducing the temperature to 80-90 degrees C, adding phosphoric acid, water, and an adsorbent for post-processing and filtering to obtain the polyether polyol.