High-water-reducing mud-resistant water reducing agent and preparation method thereof

The invention belongs to the technical field of water reducing agents and preparation thereof, and provides a high-water-reducing mud-resistant water reducing agent and a preparation method thereof. The high-water-reducing mud-resistant water reducing agent is prepared by mixing at least one of a polyether macromonomer, a mud-resistant assistant, water, an oxidizing agent, acrylic acid and hydroxyethyl acrylate, with a chain transfer agent, an initiator and sodium hydroxide. According to the present invention, with the end capping group of the polyether macromonomer in the formula system, the physical size of the tail end of the side chain is substantially increased so as to substantially increase the physical size of the tail end of the side chain of the water reducing agent synthesized and prepared from the polyether macromonomer, such that the water reducing agent is not easily inserted into the layered structure of the clay so as to achieve the mud resistance effect. And then the working performance of th