▎ 摘　　要

NOVELTY - Use of chain extender for an aromatic polyester microcellular foaming material is a graphene oxide as a carrier, is claimed. USE - The chain extender is useful for an aromatic polyester microcellular foaming material is a graphene oxide as a carrier (claimed). ADVANTAGE - The chain extender increases the melt viscosity of an aromatic polyester resin and improves the rigidity of the final microcellular foamed material. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for preparing the chain extender, comprising mixing the graphene oxide and the epoxy resin are in a mass ratio of 1:3.1:9 ratio, (ii) adding 1-1.5 wt.% accelerator of the total mass of the graphene oxide and the epoxy resin, (iii) heating the mixture to 100-200 degrees C, and applying a pressure of 0.5-5 MPa for 2-6 hours of stirring to ensure that the two fully react, and (iv) allowing to stand the mixture for cooling.