Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for catalytically synthesizing polycarboxylate superplasticizer by magnesium oxide, aluminum oxide or copper oxide
The invention discloses a method for catalytically synthesizing a polycarboxylate superplasticizer by magnesium oxide, aluminum oxide or copper oxide, which is characterized by comprising the following steps of: taking raw materials of a macromonomer, a micromonomer, a chain transfer agent, a reducing agent, an oxidizing agent, a catalyst and water, mixing the micromonomer with the water to prepare a solution A, mixing the reducing agent, the chain transfer agent and the water to prepare a solution B, wherein the macromonomer is Diethylene Glycol Monovinyl Ether, the catalyst is magnesium oxide, aluminum oxide or copper oxide; adding the macromonomer and water into a reactor, controlling the temperature to be 2-28 DEG C, adding the catalyst and the oxidizing agent, adding the solution A and the solution B dropwise, controlling the total time of dropwise adding and heat preservation reaction at the temperature of 2-28 DEG C to be 1-2 h, and preparing the polycarboxylate superplasticizer . The prepared polycarboxylate superplasticizer is particularly suitable for concrete preparation, has the characteristics of high dispersity, good slump retaining performance, high compressive strength, good durability and the like, and is high in practicability.
本发明公开了一种氧化镁、氧化铝或氧化铜催化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成A液,将还原剂、链转移剂与水混合配成B液，大单体为二乙二醇单乙烯基醚，催化剂为氧化镁、氧化铝或氧化铜；将大单体和水加入反应器中，温度控制到2～28℃，加入催化剂、氧化剂，滴加入A液和B液，滴加和2～28℃温度下保温反应的总时间为1～2h，制得聚羧酸减水剂。本发明制得的聚羧酸减水剂特别适合于混凝土配制，具有分散性强和保坍性能好、抗压强度高和耐久性能好等特点，实用性强。
Method for catalytically synthesizing polycarboxylate superplasticizer by magnesium oxide, aluminum oxide or copper oxide
The invention discloses a method for catalytically synthesizing a polycarboxylate superplasticizer by magnesium oxide, aluminum oxide or copper oxide, which is characterized by comprising the following steps of: taking raw materials of a macromonomer, a micromonomer, a chain transfer agent, a reducing agent, an oxidizing agent, a catalyst and water, mixing the micromonomer with the water to prepare a solution A, mixing the reducing agent, the chain transfer agent and the water to prepare a solution B, wherein the macromonomer is Diethylene Glycol Monovinyl Ether, the catalyst is magnesium oxide, aluminum oxide or copper oxide; adding the macromonomer and water into a reactor, controlling the temperature to be 2-28 DEG C, adding the catalyst and the oxidizing agent, adding the solution A and the solution B dropwise, controlling the total time of dropwise adding and heat preservation reaction at the temperature of 2-28 DEG C to be 1-2 h, and preparing the polycarboxylate superplasticizer . The prepared polycarboxylate superplasticizer is particularly suitable for concrete preparation, has the characteristics of high dispersity, good slump retaining performance, high compressive strength, good durability and the like, and is high in practicability.
本发明公开了一种氧化镁、氧化铝或氧化铜催化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成A液,将还原剂、链转移剂与水混合配成B液，大单体为二乙二醇单乙烯基醚，催化剂为氧化镁、氧化铝或氧化铜；将大单体和水加入反应器中，温度控制到2～28℃，加入催化剂、氧化剂，滴加入A液和B液，滴加和2～28℃温度下保温反应的总时间为1～2h，制得聚羧酸减水剂。本发明制得的聚羧酸减水剂特别适合于混凝土配制，具有分散性强和保坍性能好、抗压强度高和耐久性能好等特点，实用性强。
Method for catalytically synthesizing polycarboxylate superplasticizer by magnesium oxide, aluminum oxide or copper oxide
氧化镁、氧化铝或氧化铜催化合成聚羧酸减水剂的方法
LIU CAILIN (Autor:in) / ZHANG HENGTONG (Autor:in) / WANG JUN (Autor:in) / REN XIANYAN (Autor:in) / YANG HAIJUN (Autor:in) / YANG LI (Autor:in)
17.09.2021
Patent
Elektronische Ressource
Chinesisch
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