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A platform for research: civil engineering, architecture and urbanism
Preparation method of slow-release six-carbon polycarboxylic acid water reducer
The invention discloses a preparation method of a slow-release six-carbon polycarboxylic acid water reducer, which comprises the following steps: mixing sodium pyrosulfite, formaldehyde and water according to a specific ratio, heating and stirring to obtain an efficient reducing agent; and then, synthesizing the special auxiliary agent by using vinyl benzenesulfonic acid and divinyl benzene under specific conditions. Then mixing acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate according to a certain proportion to form a functional small monomer, and combining the functional small monomer with a chain transfer agent and an efficient reducing agent to form a material A and a material B; and finally, adding a specific six-carbon monomer, a neutralizing agent, an oxidizing agent and a catalyst in the polymerization reaction, and finishing the synthesis of the water reducing agent by controlling the dripping speed of the material A and the material B. The water reducing agent has excellent slow release performance, can be gradually released in the concrete setting process, can remarkably improve the working performance of concrete, has good social and economic benefits, and has wide popularization and application prospects.
本发明公开了一种缓释型六碳聚羧酸减水剂的制备方法，该方法首先通过特定比例混合焦亚硫酸钠、甲醛和水，加热并搅拌制得高效还原剂。接着，利用乙烯基苯磺酸和二乙烯基苯在特定条件下合成专用助剂。然后，将丙烯酸、丙烯酸羟乙酯和丙烯酸羟丙酯按一定比例混合，形成功能小单体，并与链转移剂和高效还原剂结合，形成A料和B料。最后，在聚合反应中加入特定的六碳单体、中和剂、氧化剂和催化剂，通过控制滴加A料和B料的速率，完成减水剂的合成。该减水剂具有优异的缓释性能，能够在混凝土凝结过程中逐步释放，可显著提升混凝土工作性能，具有良好的社会经济效益，推广应用前景广阔。
Preparation method of slow-release six-carbon polycarboxylic acid water reducer
The invention discloses a preparation method of a slow-release six-carbon polycarboxylic acid water reducer, which comprises the following steps: mixing sodium pyrosulfite, formaldehyde and water according to a specific ratio, heating and stirring to obtain an efficient reducing agent; and then, synthesizing the special auxiliary agent by using vinyl benzenesulfonic acid and divinyl benzene under specific conditions. Then mixing acrylic acid, hydroxyethyl acrylate and hydroxypropyl acrylate according to a certain proportion to form a functional small monomer, and combining the functional small monomer with a chain transfer agent and an efficient reducing agent to form a material A and a material B; and finally, adding a specific six-carbon monomer, a neutralizing agent, an oxidizing agent and a catalyst in the polymerization reaction, and finishing the synthesis of the water reducing agent by controlling the dripping speed of the material A and the material B. The water reducing agent has excellent slow release performance, can be gradually released in the concrete setting process, can remarkably improve the working performance of concrete, has good social and economic benefits, and has wide popularization and application prospects.
本发明公开了一种缓释型六碳聚羧酸减水剂的制备方法，该方法首先通过特定比例混合焦亚硫酸钠、甲醛和水，加热并搅拌制得高效还原剂。接着，利用乙烯基苯磺酸和二乙烯基苯在特定条件下合成专用助剂。然后，将丙烯酸、丙烯酸羟乙酯和丙烯酸羟丙酯按一定比例混合，形成功能小单体，并与链转移剂和高效还原剂结合，形成A料和B料。最后，在聚合反应中加入特定的六碳单体、中和剂、氧化剂和催化剂，通过控制滴加A料和B料的速率，完成减水剂的合成。该减水剂具有优异的缓释性能，能够在混凝土凝结过程中逐步释放，可显著提升混凝土工作性能，具有良好的社会经济效益，推广应用前景广阔。
Preparation method of slow-release six-carbon polycarboxylic acid water reducer
一种缓释型六碳聚羧酸减水剂的制备方法
FENG YANG (author) / LI YING (author) / LIU YUAN (author) / LI JUNXING (author) / DU JIANG (author) / WANG YANSHU (author) / CHE JICHENG (author) / HUA XINGXIA (author)
2024-11-12
Patent
Electronic Resource
Chinese
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