▎ 摘　　要

NOVELTY - Preparing pickering emulsifier silicon dioxide nano-network involves dissolving hexadecyltrimethylammonium chloride in water, mixing uniformly, adjusting pH to 10, putting the hexadecyl trimethyl ammonium chloride solution in water bath, adding the n-decane solution of ethyl orthosilicate, homogenizing and emulsifying, reacting, cooling, filtering, washing, drying, crushing to obtain pickering emulsifier silicon dioxide nano-network. USE - Method for preparing pickering emulsifier silicon dioxide nano-network in degradation of polyester (claimed). ADVANTAGE - The method enables to prepare pickering emulsifier silicon dioxide nano-network in a simple manner and can be produced in batch. The degradation efficiency of the polyester is high, and higher alcoholysis efficiency can be achieved in a very short reaction time at a lower reaction temperature. DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for use of pickering emulsifier silicon dioxide nano-network in degradation of polyester.