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Method for synthesizing polycarboxylate superplasticizer through zinc oxide heterogeneous catalysis ternary polymerization of 6C polyether macromonomer
The invention discloses a method for synthesizing a polycarboxylate superplasticizer by zinc oxide heterogeneous catalysis ternary polymerization of a 6C polyether macromonomer, which is characterized by comprising the following steps: taking raw materials of macromonomer, small monomer A, small monomer B, 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 water to prepare a solution A, mixing the reducing agent, the chain transfer agent and the water to prepare a solution B, and mixing the solution B and the solution C to prepare the polycarboxylate superplasticizer. The small monomer A is acrylic acid, the small monomer B is acrylamide, and the catalyst is one or a mixture of two of zinc oxide and zinc hydroxide; and adding the macromonomer and water into a reactor, controlling the temperature to be 5-30 DEG C, adding a catalyst and an oxidizing agent, mixing, simultaneously dropwise adding the solution A and the solution B at a constant speed, reacting, and standing the reacted material to room temperature, so as to obtain the product. The polycarboxylate superplasticizer prepared by the invention has the characteristics of excellent cement dispersing performance and long-term slump retaining performance, good compressive strength and durability, easiness in industrial production and the like, and is suitable for preparation of concrete.
本发明公开了一种6C聚醚大单体的氧化锌非均相催化三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、链转移剂、还原剂、氧化剂、催化剂和水，将小单体A、小单体B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为丙烯酸、小单体B为丙烯酰胺，催化剂为氧化锌、氢氧化锌中的一种或两种的混合物；将大单体和水加入反应器中，温度控制到5～30℃，加入催化剂、氧化剂混合，同时匀速滴加入A液和B液反应，将反应后物料静置至室温，即制得。本发明制得的聚羧酸减水剂具有水泥分散性能和经时保坍性能优良、抗压强度和耐久性能好、易于工业化生产等特点，适用于混凝土的配制。
Method for synthesizing polycarboxylate superplasticizer through zinc oxide heterogeneous catalysis ternary polymerization of 6C polyether macromonomer
The invention discloses a method for synthesizing a polycarboxylate superplasticizer by zinc oxide heterogeneous catalysis ternary polymerization of a 6C polyether macromonomer, which is characterized by comprising the following steps: taking raw materials of macromonomer, small monomer A, small monomer B, 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 water to prepare a solution A, mixing the reducing agent, the chain transfer agent and the water to prepare a solution B, and mixing the solution B and the solution C to prepare the polycarboxylate superplasticizer. The small monomer A is acrylic acid, the small monomer B is acrylamide, and the catalyst is one or a mixture of two of zinc oxide and zinc hydroxide; and adding the macromonomer and water into a reactor, controlling the temperature to be 5-30 DEG C, adding a catalyst and an oxidizing agent, mixing, simultaneously dropwise adding the solution A and the solution B at a constant speed, reacting, and standing the reacted material to room temperature, so as to obtain the product. The polycarboxylate superplasticizer prepared by the invention has the characteristics of excellent cement dispersing performance and long-term slump retaining performance, good compressive strength and durability, easiness in industrial production and the like, and is suitable for preparation of concrete.
本发明公开了一种6C聚醚大单体的氧化锌非均相催化三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、链转移剂、还原剂、氧化剂、催化剂和水，将小单体A、小单体B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为丙烯酸、小单体B为丙烯酰胺，催化剂为氧化锌、氢氧化锌中的一种或两种的混合物；将大单体和水加入反应器中，温度控制到5～30℃，加入催化剂、氧化剂混合，同时匀速滴加入A液和B液反应，将反应后物料静置至室温，即制得。本发明制得的聚羧酸减水剂具有水泥分散性能和经时保坍性能优良、抗压强度和耐久性能好、易于工业化生产等特点，适用于混凝土的配制。
Method for synthesizing polycarboxylate superplasticizer through zinc oxide heterogeneous catalysis ternary polymerization of 6C polyether macromonomer
一种6C聚醚大单体的氧化锌非均相催化三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)
2022-12-09
Patent
Electronic Resource
Chinese
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