Porous phenolic cloth composite material, preparation method thereof, retainer and bearing

The invention relates to a porous phenolic cloth composite material, a preparation method thereof, a retainer and a bearing, and belongs to the technical field of bearing retainers. The preparation method of the porous phenolic cloth composite material comprises the following steps: respectively soaking cotton cloth in a foaming agent solution mainly composed of N, N '-dinitroso pentamethylenetetramine, urea and a solvent and a polymer glue solution mainly composed of phenolic resin, polytetrafluoroethylene powder and an organic solvent, and then sequentially carrying out winding forming and curing to obtain the porous phenolic cloth composite material. The porous phenolic cloth composite material is obtained. The preparation method of the porous phenolic cloth composite material disclosed by the invention has a relatively high product qualification rate, and the prepared porous phenolic cloth composite material has relatively high tensile strength, relatively low friction coefficient and relatively small abr