Low Concentration polycarboxylic Concrete, cement raw materials 2.1 Test: Ka Wah Cement production PO 42.5R cement, ready-mixed mortar admixture Shanghai, the indicators in line with national standards; ash: Huangpu Power Plant Ⅱ grade production of quality Ash, the indicators in line with regulatory requirements; slag: S95 selection of slag, the indexes meet the requirements; water: water; aggregate: river sand, fineness modulus 2.5 (clay content of 1.5%), gravel for the The maximum diameter of 25mm graded gravel (clay content of 0.9%); additive: selection of Guangzhou Sika construction materials Limited production of superplasticizer, ready-mixed mortar admixtures, model and Jingzhou strong SJX Additive Materials Co., Ltd. of naphthalene superplasticizer, model SF, both of performance to meet the relevant specifications. Synthesis of copolymer of poly-carboxylic acid copolymer superplasticizer reaction with water as a solvent, persulfates or redox initiator system compound, mercapto compounds or methallyl sulfonate as a radical solution polymerization chain transfer agent . There are three methods of quality control copolymer: (1) seed polymerization: The portion of the monomer and the portion of the solvent and a small amount of initiator added to the reaction flask, Heilongjiang ready-mixed mortar admixtures, heating resumes after the polymerization of the remaining monomer , solvent and initiator continuously added to the reaction flask. (2) was added law: all the monomers and all the solvent to the reaction flask and heated continuously added initiator. It was added to (3) part of the solvent system, the reaction 先向, raised to a certain temperature, and then double-drop method was added thereto and polymerization initiator mixture of monomers. Ready-mixed ready-mixed mortar admixture mortar admixture _ _ Shanghai high-strength building materials (high-quality businesses) are provided by high-strength building materials Limited Linyi. Linyi high-strength building materials Limited (www.lygqjc.cn) is specialized in "polycarboxylate superplasticizer, polycarboxylate liquor, poly carboxylic acid liquor," the business, the company adhering to the "honesty, hard service" concept, in order to You provide the most quality products and services. Welcome to inquire! Contact: Zhu Meng income.