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Polycarboxylate superplasticizer and preparation process thereof
The invention relates to the technical field of polycarboxylate superplasticizers, and particularly discloses a polycarboxylate superplasticizer and a preparation process thereof. The preparation process of the polycarboxylate superplasticizer comprises the following steps: S1, uniformly mixing isopentenyl polyglycol ether, water and an initiator, and heating to 60-80 DEG C to prepare a reaction solution; s2, uniformly mixing acrylic acid, a protective monomer and water to prepare a solution A; uniformly mixing a reducing agent, a chain transfer agent and water to prepare a solution B; and S3, slowly dropwise adding the solution A and the solution B into the reaction solution under continuous stirring, reacting for 3-5 hours, and adjusting the pH value to 5-7, thereby obtaining the product, the protective monomer is composed of acrylate and a thiophene derivative according to a molar ratio of (5-10): (3-3.5). The polycarboxylate superplasticizer provided by the invention has the advantages of high water-reducing rate and stable and slow release.
本申请涉及聚羧酸减水剂技术领域，具体公开了一种聚羧酸减水剂及其制备工艺。一种聚羧酸减水剂的制备工艺，包括如下步骤：S1：将异戊烯基聚乙二醇醚、水、引发剂混合均匀，加热至60‑80℃制得反应液；S2：将丙烯酸、保护单体、水混合均匀制得A液；将还原剂、链转移剂、水混合均匀制得B液；S3：不断搅拌下将A液和B液缓慢滴加至反应液内，反应3‑5h后调节pH值至5‑7即得；所述保护单体由丙烯酸酯、噻吩衍生物按摩尔比(5‑10):(3‑3.5)组成。本申请的聚羧酸减水剂具有高减水率、稳定缓慢释放的优点。
Polycarboxylate superplasticizer and preparation process thereof
The invention relates to the technical field of polycarboxylate superplasticizers, and particularly discloses a polycarboxylate superplasticizer and a preparation process thereof. The preparation process of the polycarboxylate superplasticizer comprises the following steps: S1, uniformly mixing isopentenyl polyglycol ether, water and an initiator, and heating to 60-80 DEG C to prepare a reaction solution; s2, uniformly mixing acrylic acid, a protective monomer and water to prepare a solution A; uniformly mixing a reducing agent, a chain transfer agent and water to prepare a solution B; and S3, slowly dropwise adding the solution A and the solution B into the reaction solution under continuous stirring, reacting for 3-5 hours, and adjusting the pH value to 5-7, thereby obtaining the product, the protective monomer is composed of acrylate and a thiophene derivative according to a molar ratio of (5-10): (3-3.5). The polycarboxylate superplasticizer provided by the invention has the advantages of high water-reducing rate and stable and slow release.
本申请涉及聚羧酸减水剂技术领域，具体公开了一种聚羧酸减水剂及其制备工艺。一种聚羧酸减水剂的制备工艺，包括如下步骤：S1：将异戊烯基聚乙二醇醚、水、引发剂混合均匀，加热至60‑80℃制得反应液；S2：将丙烯酸、保护单体、水混合均匀制得A液；将还原剂、链转移剂、水混合均匀制得B液；S3：不断搅拌下将A液和B液缓慢滴加至反应液内，反应3‑5h后调节pH值至5‑7即得；所述保护单体由丙烯酸酯、噻吩衍生物按摩尔比(5‑10):(3‑3.5)组成。本申请的聚羧酸减水剂具有高减水率、稳定缓慢释放的优点。
Polycarboxylate superplasticizer and preparation process thereof
一种聚羧酸减水剂及其制备工艺
HUANG JUNHUI (author) / CHEN JIFANG (author)
2023-07-07
Patent
Electronic Resource
Chinese
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