GQ-213 grouting agent is a kind of micro-expansion, not contraction, high fluidity, self-compacting, high punch surplus, high strength, anti-rust rust, chlorine-free low-alkali, high adhesion, environmental protection, performance excellent products; mainly by high performance plasticizers, surfactants, expansion agent, stabilizer material, the use of railways, highways, bridges and nuclear power plants and other large projects have bonded post-tensioning prestressed concrete pore filling material construction. Synthesis of the production process diagram: →→ esterification and polymerization reaction →→ →→ →→ liquor finished (1) esterification reaction (preparation of large single-family): Measurement of polyethylene glycol, which is melted in a water bath , added to the reaction vessel, while adding 1 part (hydroquinone and phenothiazine ratio of 5: 1), methacrylic acid, as well as small material Polycarboxylate manufacturers, heated to 90 ℃, the addition of concentrated sulfuric acid (as catalyst), continue to heat up to 120 ℃, holding 4.5h, after two hours filled with nitrogen gas, (6㎡ / hour, filling a bottle Polycarboxylate production every 30 minutes, a total of four bottles), the reaction is complete, get less water intermediate agent macromonomer polyethylene glycol monomethacrylate and water. (By vacuum distillation → → dehydration, acidification is more complete). (2) Polymerization: Using ammonium persulfate initiator aqueous solution polymerization. Measurement esterification product i.e. polyethylene glycol mono methacrylate, acrylic acid, dodecyl mercaptan molecular weight modifier, with deionized water, pumped into tank A standby titration, is A material. Measurement of ammonium persulfate, with deionized water, pumped into tank B alternate titration, B is expected. Adding deionized water into the reaction vessel, warmed to 85 ℃, while titration A, B material. A complete feed three hours titration, B feed 3.5 hours titration End Polycarboxylate plant, incubated for 1.5 hours. (Temperature control: 90 ± 2 ℃). (3) and reaction (is concentrated sulfuric acid esterification catalyst and being used above), a good response would be cool to below 50 ℃ polymeric polycarboxylate water reducer, soda ash is added with stirring, until the PH value of about 7, the reaction was complete, the mother liquor obtained polycarboxylate superplasticizer. High-strength building materials (Figure), polycarboxylate water reducer sales Ltd. Changjiang Li Polycarboxylate high-strength building materials provided by the Linyi City. Linyi high-strength building materials Limited (www.lygqjc.cn) adhere to the "people-oriented" business philosophy, with a professional staff, and strive to provide the best products and services to contribute to society, and to welcome new and old customers throughout the visit, sincere cooperation for a better future. High Strength Materials - your trusted friend, Company Address: Linyi City one kilometer away-car supermarket North Road East, Contact: Zhu Meng income.