A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Sulfonyl functional polycarboxylic acid water reducer
The invention discloses a novel sulfonyl functional polycarboxylic acid water reducing agent, the chemical formula of the water reducing agent is R1-O-(CH2CH2O) m-(CH2CH (COOR2)) n-SO3M, the molecular weight of the water reducing agent is between 10000 and 50000, and the solid content of the water reducing agent is 30%-50%. And the use amount of the cement additive is 0.1%-0.5% of the use amount of cement. The preparation method comprises the following three steps: adding polyethylene glycol, a sulfonic acid compound and a carboxylic acid compound into a reaction kettle for reaction, filtering to obtain a product, and filtering and drying to obtain the sulfonic acid group functional polycarboxylic acid water reducer. Wherein the molar ratio of the propylene sulfonate to the hydroxyethyl acrylate is 1: 2-1: 3, the reaction temperature is 60-90 DEG C, and the molecular weight of the polyethylene glycol is 2000-4000. And after drying treatment, the product is white powder. The development of the water reducing agent is expected to be widely applied to the concrete industry, the performance of concrete is improved, and meanwhile, the water reducing agent has certain economic benefits and social benefits.
本发明公开了一种新型的磺酸基功能型聚羧酸减水剂，其化学式为R1‑O‑(CH2CH2O)m‑(CH2CH(COOR2))n‑SO3M，该减水剂分子量在10000‑50000之间，固含量为30％‑50％。使用时的用量为水泥用量的0.1％‑0.5％。其制备方法包括三个步骤，即将聚乙二醇、磺酸化合物和羧酸化合物加入反应釜中进行反应，过滤得到产物后经过滤干燥即可得到磺酸基功能型聚羧酸减水剂。其中，磺酸丙烯和丙烯酸羟乙酯的摩尔比为1:2至1:3之间，反应温度为60℃至90℃之间，聚乙二醇的分子量为2000至4000之间。经干燥处理后，产物呈白色粉末状。该减水剂的研制有望在混凝土行业中得到广泛应用，提高混凝土的性能，同时具有一定的经济效益和社会效益。
Sulfonyl functional polycarboxylic acid water reducer
The invention discloses a novel sulfonyl functional polycarboxylic acid water reducing agent, the chemical formula of the water reducing agent is R1-O-(CH2CH2O) m-(CH2CH (COOR2)) n-SO3M, the molecular weight of the water reducing agent is between 10000 and 50000, and the solid content of the water reducing agent is 30%-50%. And the use amount of the cement additive is 0.1%-0.5% of the use amount of cement. The preparation method comprises the following three steps: adding polyethylene glycol, a sulfonic acid compound and a carboxylic acid compound into a reaction kettle for reaction, filtering to obtain a product, and filtering and drying to obtain the sulfonic acid group functional polycarboxylic acid water reducer. Wherein the molar ratio of the propylene sulfonate to the hydroxyethyl acrylate is 1: 2-1: 3, the reaction temperature is 60-90 DEG C, and the molecular weight of the polyethylene glycol is 2000-4000. And after drying treatment, the product is white powder. The development of the water reducing agent is expected to be widely applied to the concrete industry, the performance of concrete is improved, and meanwhile, the water reducing agent has certain economic benefits and social benefits.
本发明公开了一种新型的磺酸基功能型聚羧酸减水剂，其化学式为R1‑O‑(CH2CH2O)m‑(CH2CH(COOR2))n‑SO3M，该减水剂分子量在10000‑50000之间，固含量为30％‑50％。使用时的用量为水泥用量的0.1％‑0.5％。其制备方法包括三个步骤，即将聚乙二醇、磺酸化合物和羧酸化合物加入反应釜中进行反应，过滤得到产物后经过滤干燥即可得到磺酸基功能型聚羧酸减水剂。其中，磺酸丙烯和丙烯酸羟乙酯的摩尔比为1:2至1:3之间，反应温度为60℃至90℃之间，聚乙二醇的分子量为2000至4000之间。经干燥处理后，产物呈白色粉末状。该减水剂的研制有望在混凝土行业中得到广泛应用，提高混凝土的性能，同时具有一定的经济效益和社会效益。
Sulfonyl functional polycarboxylic acid water reducer
一种磺酸基功能型聚羧酸减水剂
HUANG QING (author) / WANG YIPING (author) / MENG XIANGRUI (author) / ZHOU GUANGJUN (author) / ZENG ZHENFENG (author)
2023-05-19
Patent
Electronic Resource
Chinese
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