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Method for synthesizing polycarboxylate superplasticizer by nickel oxide heterogeneous catalysis binary copolymerization of 6C polyether macromonomer
The invention discloses a method for synthesizing a polycarboxylate superplasticizer by nickel oxide heterogeneous catalysis binary copolymerization of 6C polyether macromonomer. The method is characterized by comprising the following steps: taking raw materials of a macromonomer, a small monomer, a chain transfer agent, a reducing agent, an oxidizing agent, a catalyst and water, and mixing the small monomer with the water to prepare a solution A; mixing the reducing agent, the chain transfer agent and water to prepare a solution B; and adding the macromonomer and water into a reactor with a thermometer, cooling and stirring, when the temperature is controlled to 0-15 DEG C and the macromonomer is completely dissolved, adding the catalyst and water, mixing, adding the oxidizing agent and water, mixing, simultaneously dropwise adding the solution A and the solution B at a constant speed for 1-2 hours, and standing the reacted material to room temperature, thereby obtaining the polycarboxylate superplasticizer. The polycarboxylate superplasticizer prepared by the invention is suitable for preparation of concrete, and has the characteristics of simple production conditions, industrial production, excellent cement dispersing performance and long-term slump retaining performance, good compressive strength and durability and the like.
本发明公开了一种6C聚醚大单体的氧化镍非均相催化两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、链转移剂、还原剂、氧化剂、催化剂和水，将小单体与水混合，配制成A液；将还原剂、链转移剂与水混合，配制成B液；将大单体和水加入到有温度计的反应器中，降温并搅拌，待温度控制到0～15℃且大单体完全溶解时，加入催化剂和水混合，加入氧化剂和水混合，再同时匀速滴加入A液和B液，滴加和反应的总时间为1～2h，将反应后物料静置至室温，即制得。采用本发明，制得的聚羧酸减水剂适合于混凝土的配制，具有生产条件简单、可工业化生产，水泥分散性能和经时保坍性能优异、抗压强度和耐久性能好等特点。
Method for synthesizing polycarboxylate superplasticizer by nickel oxide heterogeneous catalysis binary copolymerization of 6C polyether macromonomer
The invention discloses a method for synthesizing a polycarboxylate superplasticizer by nickel oxide heterogeneous catalysis binary copolymerization of 6C polyether macromonomer. The method is characterized by comprising the following steps: taking raw materials of a macromonomer, a small monomer, a chain transfer agent, a reducing agent, an oxidizing agent, a catalyst and water, and mixing the small monomer with the water to prepare a solution A; mixing the reducing agent, the chain transfer agent and water to prepare a solution B; and adding the macromonomer and water into a reactor with a thermometer, cooling and stirring, when the temperature is controlled to 0-15 DEG C and the macromonomer is completely dissolved, adding the catalyst and water, mixing, adding the oxidizing agent and water, mixing, simultaneously dropwise adding the solution A and the solution B at a constant speed for 1-2 hours, and standing the reacted material to room temperature, thereby obtaining the polycarboxylate superplasticizer. The polycarboxylate superplasticizer prepared by the invention is suitable for preparation of concrete, and has the characteristics of simple production conditions, industrial production, excellent cement dispersing performance and long-term slump retaining performance, good compressive strength and durability and the like.
本发明公开了一种6C聚醚大单体的氧化镍非均相催化两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、链转移剂、还原剂、氧化剂、催化剂和水，将小单体与水混合，配制成A液；将还原剂、链转移剂与水混合，配制成B液；将大单体和水加入到有温度计的反应器中，降温并搅拌，待温度控制到0～15℃且大单体完全溶解时，加入催化剂和水混合，加入氧化剂和水混合，再同时匀速滴加入A液和B液，滴加和反应的总时间为1～2h，将反应后物料静置至室温，即制得。采用本发明，制得的聚羧酸减水剂适合于混凝土的配制，具有生产条件简单、可工业化生产，水泥分散性能和经时保坍性能优异、抗压强度和耐久性能好等特点。
Method for synthesizing polycarboxylate superplasticizer by nickel oxide heterogeneous catalysis binary copolymerization of 6C polyether macromonomer
一种6C聚醚大单体的氧化镍非均相催化两元共聚合成聚羧酸减水剂的方法
SHU DOUDOU (author) / SHU XUEJUN (author) / LIU CAILIN (author) / ZHANG HENGTONG (author) / REN XIANYAN (author) / YANG HAIJUN (author) / HE NIAN (author) / LUO SHUAI (author)
2021-09-10
Patent
Electronic Resource
Chinese
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