Method for preparing phenolic resin from kettle residual waste of corn chemical alcohol, phenolic resin and application

The invention relates to phenolic resin, in particular to a method for preparing phenolic resin from kettle residual waste of corn chemical alcohol, phenolic resin and an application. The method comprises the steps as follows: a) the kettle residual waste of corn chemical alcohol is polymerized under the action of a catalyst, and a mixture of poly-mixed polyols and organic salt and used as a modified additive of phenolic resin; b) molten phenol and an alkali catalyst are mixed with a modifying additive prepared in step a) and heated to 70-90 DEG C; c) formaldehyde is added to a reaction solution in the step b), a continuous reflux reaction is performed at the constant temperature of 70-90 DEG C, and modified phenolic resin is obtained. Toughness and flame retardancy of phenolic resin can be improved, waste is turned into treasure, and a new way is opened up for recycling of the kettle residual waste of corn chemical alcohol. 本发明涉及酚醛树脂，尤其涉及玉米化工醇釜残废料制酚醛树脂的方法及酚醛树脂和应用，a)将玉米化工醇釜残废料在催化剂作用下聚合，得到聚混合多元醇与有机盐的混合物，作为酚醛树脂