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A platform for research: civil engineering, architecture and urbanism
Polycarboxylate superplasticizer with anti-flocculation function and preparation method thereof
The invention discloses a polycarboxylic acid water reducing agent with an anti-flocculation function and a preparation method thereof, and the water reducing agent is mainly prepared by the following steps: esterifying polyethylene glycol monomethyl ether and methacrylic acid to obtain esterified macromonomer polyethylene glycol monomethyl ether methacrylate, and then polymerizing the esterified macromonomer polyethylene glycol monomethyl ether methacrylate with perfluorophenyl acrylate. The polycarboxylate superplasticizer with the anti-flocculation function can effectively achieve the anti-flocculation purpose, is stable in structure and good in water solubility, and does not generate other adverse effects on concrete; the problems that the flowability of the concrete is reduced and the slump loss is too large after the machine-made sand containing the flocculating agent is added into the concrete can be solved; besides, the preparation method is simple to operate, low in cost of main raw materials and suitable for large-scale industrial production, and is an economical preparation method for obtaining the high-quality concrete admixture.
本发明公开了一种具有抗絮凝功能聚羧酸减水剂及其制备方法，所述减水剂主要是由聚乙二醇单甲醚与甲基丙烯酸进行酯化，得到酯化大单体聚乙二醇单甲醚甲基丙烯酸酯，然后再与全氟苯基丙烯酸酯进行聚合所得。本发明提供的具有抗絮凝功能聚羧酸减水剂能够有效实现抗絮凝目的，其结构稳定，水溶性较好，不会对混凝土产生其他不良影响；可以克服因在混凝土中加入含絮凝剂的机制砂后使混凝土流动性降低，坍落度损失过大的问题；此外，其制备方法操作简单，主要原料成本低廉，适合大规模工业化生产，是一种经济的获得高品质的混凝土外加剂的制备方法。
Polycarboxylate superplasticizer with anti-flocculation function and preparation method thereof
The invention discloses a polycarboxylic acid water reducing agent with an anti-flocculation function and a preparation method thereof, and the water reducing agent is mainly prepared by the following steps: esterifying polyethylene glycol monomethyl ether and methacrylic acid to obtain esterified macromonomer polyethylene glycol monomethyl ether methacrylate, and then polymerizing the esterified macromonomer polyethylene glycol monomethyl ether methacrylate with perfluorophenyl acrylate. The polycarboxylate superplasticizer with the anti-flocculation function can effectively achieve the anti-flocculation purpose, is stable in structure and good in water solubility, and does not generate other adverse effects on concrete; the problems that the flowability of the concrete is reduced and the slump loss is too large after the machine-made sand containing the flocculating agent is added into the concrete can be solved; besides, the preparation method is simple to operate, low in cost of main raw materials and suitable for large-scale industrial production, and is an economical preparation method for obtaining the high-quality concrete admixture.
本发明公开了一种具有抗絮凝功能聚羧酸减水剂及其制备方法，所述减水剂主要是由聚乙二醇单甲醚与甲基丙烯酸进行酯化，得到酯化大单体聚乙二醇单甲醚甲基丙烯酸酯，然后再与全氟苯基丙烯酸酯进行聚合所得。本发明提供的具有抗絮凝功能聚羧酸减水剂能够有效实现抗絮凝目的，其结构稳定，水溶性较好，不会对混凝土产生其他不良影响；可以克服因在混凝土中加入含絮凝剂的机制砂后使混凝土流动性降低，坍落度损失过大的问题；此外，其制备方法操作简单，主要原料成本低廉，适合大规模工业化生产，是一种经济的获得高品质的混凝土外加剂的制备方法。
Polycarboxylate superplasticizer with anti-flocculation function and preparation method thereof
一种具有抗絮凝功能聚羧酸减水剂及其制备方法
YU HAO (author) / YANG WEIBEN (author) / JIAN KAI (author) / HU KAIWEI (author) / XING YABING (author) / LIU ZIYI (author)
2024-08-27
Patent
Electronic Resource
Chinese
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