Method for preparing poly(dialkyl cyclosiloxane) at room temperature

The invention relates to a method for preparing poly(dialkyl cyclosiloxane) from a silica-containing material and alcohols at room temperature by electrolysis in an electrolytic cell containing electrolyte solution consisting of an organic solvent and electrolyte. Compared with a conventional method for preparing the poly(dialkyl cyclosiloxane), the method disclosed by the invention has the advantages of environmental protection, energy saving, simplified process and the like. Meanwhile, the problem of difficulty in synthetic processes of specific monomers such as poly(diethyl cyclosiloxane), poly(trifluoropropyl cyclosiloxane) and other substances can also be solved by the method.