▎ 摘　　要

NOVELTY - Preparing nano-filler in-situ initiated synthesis of sulfur-containing polymer comprises (1) mixing nano-filler, strong base and solvent, and reacting at high temperature to obtain a pre-treated nano-filler, and (2) using the pre-treated nano-filler as an initiator, and carrying out in situ initiating anionic ring-opening polymerization of a sulfur-containing one-carbon monomer and an epoxy monomer to obtain a sulfur-containing polymer. USE - The method is useful for preparing nano-filler in-situ initiated synthesis of sulfur-containing polymer, which is useful in preparing dielectric material with a high dielectric constant (claimed). Can also be used in optical device, biological medical treatment, aerospace and electronic appliance. ADVANTAGE - The method is green and pollution-free; produces no toxic compounds; and can be uniformly dispersed the nano-filler in the polymerization system. The prepared sulfur-containing polymer has excellent mechanical properties and high dielectric constant. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is also included for a sulfur-containing polymer, where the dielectric constant is ≥ 10.