Study on Synthesis and between Molecular Structure and Performance of Ether-type Polycarboxylate Superplasticizer The development and progress of concrete admixture technology has played a decisive role in the technological progress of the concrete industry. Throughout the industry, the entire industry has experienced the development of the first generation of ordinary water reducers represented by wood calcium and the second generation of superplasticizers represented by naphthalene series. As the third generation, the latest generation of high performance water reduction The agent, polycarboxylate high-performance water reducer has good performance in water reduction, moisture retention, plasticization, shrinkage and environmental protection, and has become the future development direction of the concrete admixture industry.