PCE superplasticizer powder

The main synthetic raw material of polycarboxylic acid superplasticizer is a water-soluble linear polymer prepared by ethylene oxide through addition reaction, and ethylene oxide (EO) is an important organic chemical product second only to polyethylene and polyvinyl chloride in ethylene derivatives, and an important product in petrochemical industry, with high chemical activity, flammable, explosive, and not easy to transport long distance.

In many concrete projects, traditional high efficiency concrete such as naphthalene series can not meet the engineering needs more and more due to the limitation of technical performance. A new generation of water reducing agent that has attracted much attention at home and abroad, polycarboxylic acid series high performance water reducing agent, because it has truly designed an effective molecular structure according to the action mechanism of dispersed cement, has a super-dispersed type, can prevent the loss of concrete slump without causing obvious retarding, and plays a high plasticizing effect under low content. Good fluidity retention, cement to adapt to a wide range of molecular structure, large degrees of freedom, synthesis technology, high performance of a large room for strengthening concrete significantly, can reduce concrete shrinkage, harmful substance content is very low technical performance characteristics, The concrete is endowed with excellent construction workability, good strength development, excellent durability, polycarboxylic acid series of high-performance water reducer has good comprehensive technical performance advantages and environmental protection characteristics, in line with the needs of modern concrete engineering. Therefore, polycarboxylic acid series high performance water reducing agent is gradually becoming the preferred admixture for the preparation of high performance concrete. It is reported that the use of polycarboxylic acid admixtures in Japan has accounted for more than 80% of the total number of high-performance admixtures, and North America and Europe have also accounted for more than 50%. In China, polycarboxylic acid superplasticizers have been successfully applied only in the Three Gorges Dam, Sutong Bridge, Tianwan nuclear power plant, Beijing-Shanghai high-speed railway and other large national water conservancy, bridge, nuclear power, railway projects, and achieved remarkable results.