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Method for synthesizing polycarboxylate superplasticizer through manganese oxide heterogeneous catalysis quaternary copolymerization of 6C polyether macromonomer
The invention discloses a method for synthesizing a polycarboxylate superplasticizer by manganese oxide heterogeneous catalysis quaternary copolymerization of 6C polyether macromonomer. The method is characterized by comprising the following steps: taking raw materials of a macromonomer, small monomer A, small monomer B, small monomer C, a chain transfer agent, a reducing agent, an oxidizing agent, a catalyst and water, mixing the small monomer A, the small monomer B and the small monomer C with the water to prepare a solution A, and mixing the reducing agent, the chain transfer agent and water to prepare a solution B, wherein the small monomer A is acrylic acid, the small monomer B is acrylamide, and the small monomer C is sodium allysulfonate; and adding the macromonomer and water into a reactor, controlling the temperature to be 5-20 DEG C, adding the catalyst and the oxidizing agent, simultaneously dropwise adding the solution A and the solution B at a constant speed, carrying out a heat preservation reaction, and standing the reacted material to room temperature to obtain the polycarboxylate superplasticizer . According to the present invention, the synthesis temperature is low, the synthesis time is short, and the prepared polycarboxylate superplasticizer is suitable for concrete preparation, has characteristics of good cement dispersion performance, good aging slump loss resistance, good compressive strength, good durability, and strong practicality.
本发明公开了一种6C聚醚大单体的氧化锰非均相催化四元共聚合成聚羧酸减水剂的方法，其特征是：取原料大单体、小单体A、小单体B、小单体C、链转移剂、还原剂、氧化剂、催化剂和水，将小单体A、小单体B和小单体C与水混合配制成A液,将还原剂、链转移剂与水混合配制成B液，小单体A是丙烯酸、小单体B是丙烯酰胺、小单体C是烯丙基磺酸钠；将大单体和水加入到反应器中，温度控制到5～20℃，加入催化剂和氧化剂，同时匀速滴加入A液和B液保温反应，将反应后物料静置至室温，即制得。采用本发明，合成温度低、时间较短，制得的聚羧酸减水剂适用于混凝土配制，水泥分散性能、经时保坍性能、抗压强度和耐久性能良好，实用性强。
Method for synthesizing polycarboxylate superplasticizer through manganese oxide heterogeneous catalysis quaternary copolymerization of 6C polyether macromonomer
The invention discloses a method for synthesizing a polycarboxylate superplasticizer by manganese oxide heterogeneous catalysis quaternary copolymerization of 6C polyether macromonomer. The method is characterized by comprising the following steps: taking raw materials of a macromonomer, small monomer A, small monomer B, small monomer C, a chain transfer agent, a reducing agent, an oxidizing agent, a catalyst and water, mixing the small monomer A, the small monomer B and the small monomer C with the water to prepare a solution A, and mixing the reducing agent, the chain transfer agent and water to prepare a solution B, wherein the small monomer A is acrylic acid, the small monomer B is acrylamide, and the small monomer C is sodium allysulfonate; and adding the macromonomer and water into a reactor, controlling the temperature to be 5-20 DEG C, adding the catalyst and the oxidizing agent, simultaneously dropwise adding the solution A and the solution B at a constant speed, carrying out a heat preservation reaction, and standing the reacted material to room temperature to obtain the polycarboxylate superplasticizer . According to the present invention, the synthesis temperature is low, the synthesis time is short, and the prepared polycarboxylate superplasticizer is suitable for concrete preparation, has characteristics of good cement dispersion performance, good aging slump loss resistance, good compressive strength, good durability, and strong practicality.
本发明公开了一种6C聚醚大单体的氧化锰非均相催化四元共聚合成聚羧酸减水剂的方法，其特征是：取原料大单体、小单体A、小单体B、小单体C、链转移剂、还原剂、氧化剂、催化剂和水，将小单体A、小单体B和小单体C与水混合配制成A液,将还原剂、链转移剂与水混合配制成B液，小单体A是丙烯酸、小单体B是丙烯酰胺、小单体C是烯丙基磺酸钠；将大单体和水加入到反应器中，温度控制到5～20℃，加入催化剂和氧化剂，同时匀速滴加入A液和B液保温反应，将反应后物料静置至室温，即制得。采用本发明，合成温度低、时间较短，制得的聚羧酸减水剂适用于混凝土配制，水泥分散性能、经时保坍性能、抗压强度和耐久性能良好，实用性强。
Method for synthesizing polycarboxylate superplasticizer through manganese oxide heterogeneous catalysis quaternary copolymerization of 6C polyether macromonomer
一种6C聚醚大单体的氧化锰非均相催化四元共聚合成聚羧酸减水剂的方法
LIU CAILIN (author) / ZHANG HENGTONG (author) / WANG JUN (author) / REN XIANYAN (author) / YANG HAIJUN (author) / SHU DOUDOU (author) / SHU XUEJUN (author) / HE NIAN (author) / LUO SHUAI (author)
2021-09-10
Patent
Electronic Resource
Chinese
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