Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Preparation method of air entraining agent
The invention relates to the technical field of composite material preparation, and particularly discloses a preparation method of an air entraining agent, and the preparation method of the air entraining agent comprises the following steps: in a stirring state, adding an initiator and sodium hydroxide into a reaction kettle A, conducting heating to 65-75 DEG C, conducting vacuumizing and stirring for 30-90 minutes, putting ethylene oxide into a reaction kettle B, dropwise adding ethylene oxide into the reaction kettle A from the reaction kettle B, heating the reaction kettle A to 120-130 DEG C, and maintaining the system pressure of the reaction kettle A in a medium-pressure environment; slowly dropwise adding the residual ethylene oxide in the reaction kettle B into the reaction kettle A to obtain an intermediate A; adding the intermediate A, phosphoric acid and a cosolvent into a cleaned reaction kettle A, conducting heating to 120-130 DEG C, and conducting stirring for 15-18 hours; and conducting cooling, concentrating and cleaning to obtain the air entraining agent. The invention aims to solve the problems that in the prior art, an air entraining agent is poor in foam stabilizing effect, and more air entraining agents need to be added to improve the workability of concrete.
本申请涉及复合材料制备技术领域，具体公开了一种引气剂的制备方法，份数均为质量份，引气剂制备方法包括以下步骤：在搅拌状态下，于反应釜A中加入引发剂与氢氧化钠，升温至65‑75℃后抽真空搅拌30‑90min，将环氧乙烷放入反应釜B内，从反应釜B中滴加环氧乙烷到A反应釜中，将反应釜A升温至120‑130℃，并将反应釜A体系压力维持在中压环境下；将反应釜B中剩余的环氧乙烷缓慢滴加到反应釜A中，得到中间体A；将中间体A、磷酸与助溶剂加入洗净的反应釜A中升温至120‑130℃搅拌15‑18h；冷却浓缩清洗即得所述引气剂。本专利的目的在于解决现有技术中引气剂稳泡效果不佳，需要添加较多的引气剂以提高混凝土的和易性的问题。
Preparation method of air entraining agent
The invention relates to the technical field of composite material preparation, and particularly discloses a preparation method of an air entraining agent, and the preparation method of the air entraining agent comprises the following steps: in a stirring state, adding an initiator and sodium hydroxide into a reaction kettle A, conducting heating to 65-75 DEG C, conducting vacuumizing and stirring for 30-90 minutes, putting ethylene oxide into a reaction kettle B, dropwise adding ethylene oxide into the reaction kettle A from the reaction kettle B, heating the reaction kettle A to 120-130 DEG C, and maintaining the system pressure of the reaction kettle A in a medium-pressure environment; slowly dropwise adding the residual ethylene oxide in the reaction kettle B into the reaction kettle A to obtain an intermediate A; adding the intermediate A, phosphoric acid and a cosolvent into a cleaned reaction kettle A, conducting heating to 120-130 DEG C, and conducting stirring for 15-18 hours; and conducting cooling, concentrating and cleaning to obtain the air entraining agent. The invention aims to solve the problems that in the prior art, an air entraining agent is poor in foam stabilizing effect, and more air entraining agents need to be added to improve the workability of concrete.
本申请涉及复合材料制备技术领域，具体公开了一种引气剂的制备方法，份数均为质量份，引气剂制备方法包括以下步骤：在搅拌状态下，于反应釜A中加入引发剂与氢氧化钠，升温至65‑75℃后抽真空搅拌30‑90min，将环氧乙烷放入反应釜B内，从反应釜B中滴加环氧乙烷到A反应釜中，将反应釜A升温至120‑130℃，并将反应釜A体系压力维持在中压环境下；将反应釜B中剩余的环氧乙烷缓慢滴加到反应釜A中，得到中间体A；将中间体A、磷酸与助溶剂加入洗净的反应釜A中升温至120‑130℃搅拌15‑18h；冷却浓缩清洗即得所述引气剂。本专利的目的在于解决现有技术中引气剂稳泡效果不佳，需要添加较多的引气剂以提高混凝土的和易性的问题。
Preparation method of air entraining agent
一种引气剂的制备方法
GAO ZONGHONG (Autor:in) / DENG NI (Autor:in) / CHEN JIE (Autor:in) / FANG SHICHANG (Autor:in) / TIAN YINGBING (Autor:in)
30.07.2021
Patent
Elektronische Ressource
Chinesisch
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