Preparation method of high performance nanomaterial modified powder polycarboxylic acid water reducer

The invention discloses a preparation method of a nanomaterial modified powder polycarboxylic acid high performance water reducer. The preparation method comprises the following steps: 1) synthesizing a polycarboxylic acid water reducer mother solution; 2) modifying the polycarboxylic acid water reducer mother solution; 3) drying the modified polycarboxylic acid water reducer mother solution to a block through a roller, proportionally mixing the dried block with a volatile refrigerant, and breaking into a powder under the condition of low temperature; wherein the polycarboxylic acid water reducer mother solution is synthesized through a dropwise adding polymerization production process, and nano-calcium, nano-aluminum, nano-silicon and nano-carbon are mixed to serve as a modifying agent when the polycarboxylic acid water reducer mother solution is modified. The preparation method of the nanomaterial modified powder polycarboxylic acid high performance water reducer reduces the production difficulty and the production cost and is favorable for industrial popularization, and the water reducer prepared through the method has a good water reducing effect.