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Method for synthesizing polycarboxylic acid high-performance water reducing agent by mixing C4-6 macromonomers
The invention provides a method for synthesizing a polycarboxylic acid high-performance water reducing agent by mixing C4-6 macromonomers, which comprises the following steps: 1) preparing basic raw materials: adding macromonomers, water, a reducing agent and peroxide into a reaction container I, and stirring; 2) preparing a material A: adding a six-carbon macromonomer and water into a reaction container II, then adding a small monomer, and uniformly stirring; (3) preparing a material B: adding a chain transfer agent, a reducing agent and water into a reaction container III, and uniformly stirring; 4) polymerization reaction: controlling the temperature in the reaction container I within the range of 8-30 DEG C, dropwise adding the material A and the material B into the reaction container I for 140-160 minutes, dropwise adding the material B for 180-190 minutes, and controlling the reaction temperature within the range of 22-58 DEG C; after the material B is dropwise added, keeping the temperature for 60-70 minutes, adding alkali liquor, and stirring for 10-15 minutes to obtain the concrete high-performance water reducing agent.
本发明提供了一种C4‑6大单体混合合成聚羧酸高性能减水剂的方法，包括如下步骤：1)基础原料的制备：在反应容器一中加入大单体,水，还原剂和过氧化物，搅拌；2)A料的制备：在反应容器二加入六碳大单体和水，再加入小单体，搅拌均匀；3)B料的制备：在反应容器三加入链转移剂，还原剂和水，搅拌均匀；4)聚合反应：将反应容器一内温度控制在8‑30℃范围内，向反应容器一内滴加A料和B料，A料滴加时间为140‑160min，B料滴加时间为180‑190min，反应温度控制在22‑58℃；B料滴加完毕，保温60‑70min，加入碱液，搅拌10‑15min，得到混凝土高性能减水剂。
Method for synthesizing polycarboxylic acid high-performance water reducing agent by mixing C4-6 macromonomers
The invention provides a method for synthesizing a polycarboxylic acid high-performance water reducing agent by mixing C4-6 macromonomers, which comprises the following steps: 1) preparing basic raw materials: adding macromonomers, water, a reducing agent and peroxide into a reaction container I, and stirring; 2) preparing a material A: adding a six-carbon macromonomer and water into a reaction container II, then adding a small monomer, and uniformly stirring; (3) preparing a material B: adding a chain transfer agent, a reducing agent and water into a reaction container III, and uniformly stirring; 4) polymerization reaction: controlling the temperature in the reaction container I within the range of 8-30 DEG C, dropwise adding the material A and the material B into the reaction container I for 140-160 minutes, dropwise adding the material B for 180-190 minutes, and controlling the reaction temperature within the range of 22-58 DEG C; after the material B is dropwise added, keeping the temperature for 60-70 minutes, adding alkali liquor, and stirring for 10-15 minutes to obtain the concrete high-performance water reducing agent.
本发明提供了一种C4‑6大单体混合合成聚羧酸高性能减水剂的方法，包括如下步骤：1)基础原料的制备：在反应容器一中加入大单体,水，还原剂和过氧化物，搅拌；2)A料的制备：在反应容器二加入六碳大单体和水，再加入小单体，搅拌均匀；3)B料的制备：在反应容器三加入链转移剂，还原剂和水，搅拌均匀；4)聚合反应：将反应容器一内温度控制在8‑30℃范围内，向反应容器一内滴加A料和B料，A料滴加时间为140‑160min，B料滴加时间为180‑190min，反应温度控制在22‑58℃；B料滴加完毕，保温60‑70min，加入碱液，搅拌10‑15min，得到混凝土高性能减水剂。
Method for synthesizing polycarboxylic acid high-performance water reducing agent by mixing C4-6 macromonomers
一种C4-6大单体混合合成聚羧酸高性能减水剂的方法
XU DAYONG (author) / ZENG JINTAO (author)
2021-06-01
Patent
Electronic Resource
Chinese
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