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A platform for research: civil engineering, architecture and urbanism
Anti-mud polycarboxylate superplasticizer and preparation method thereof
The invention discloses an anti-mud polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of concrete admixtures. The superplasticizer is prepared from the following raw materials in percentage by mass: 25 to 30 percent of an unsaturated polyether macromonomer, 2 to 5 percent of unsaturated carboxylic acid, 1 to 5 percent of a mud-resistant monomer, 0.15 to 0.35 percent of an initiator, 0.01 to 1 percent of a chain transfer agent, 1 to 1.2 percent of a neutralizer and the balance of water. The prepared novel anti-mud polycarboxylate superplasticizer is high in water reducing rate, good in slump retaining performance and good in anti-mud effect, solves the problem of adaptability of the polycarboxylate superplasticizer and concrete raw materials, and can obviously improve the initial slump and slump gradual loss of concrete especially under the condition that the mud content of gravel materials is large. Meanwhile, the preparation process is simple, the production process is environment-friendly, and the cost is low.
本发明公开一种抗泥型聚羧酸减水剂及其制备方法，属于混凝土外加剂技术领域。本发明减水剂按质量百分比计，包括以下原料制备而成：不饱和聚醚大单体25‑30％、不饱和羧酸2‑5％、抗泥性单体1‑5％、引发剂0.15‑0.35％、链转移剂0.01‑1％、中和剂1‑1.2％，余量为水。本发明制备的新型抗泥型聚羧酸减水剂，减水率高，保坍性能好，抗泥效果好，解决了聚羧酸减水剂与混凝土原材料的适应性问题，特别是在砂石料含泥量较大的情况下，可明显改善混凝土初始坍落度和坍落度经时损失，同时制备工艺简单，生产过程绿色环保，成本低。
Anti-mud polycarboxylate superplasticizer and preparation method thereof
The invention discloses an anti-mud polycarboxylate superplasticizer and a preparation method thereof, and belongs to the technical field of concrete admixtures. The superplasticizer is prepared from the following raw materials in percentage by mass: 25 to 30 percent of an unsaturated polyether macromonomer, 2 to 5 percent of unsaturated carboxylic acid, 1 to 5 percent of a mud-resistant monomer, 0.15 to 0.35 percent of an initiator, 0.01 to 1 percent of a chain transfer agent, 1 to 1.2 percent of a neutralizer and the balance of water. The prepared novel anti-mud polycarboxylate superplasticizer is high in water reducing rate, good in slump retaining performance and good in anti-mud effect, solves the problem of adaptability of the polycarboxylate superplasticizer and concrete raw materials, and can obviously improve the initial slump and slump gradual loss of concrete especially under the condition that the mud content of gravel materials is large. Meanwhile, the preparation process is simple, the production process is environment-friendly, and the cost is low.
本发明公开一种抗泥型聚羧酸减水剂及其制备方法，属于混凝土外加剂技术领域。本发明减水剂按质量百分比计，包括以下原料制备而成：不饱和聚醚大单体25‑30％、不饱和羧酸2‑5％、抗泥性单体1‑5％、引发剂0.15‑0.35％、链转移剂0.01‑1％、中和剂1‑1.2％，余量为水。本发明制备的新型抗泥型聚羧酸减水剂，减水率高，保坍性能好，抗泥效果好，解决了聚羧酸减水剂与混凝土原材料的适应性问题，特别是在砂石料含泥量较大的情况下，可明显改善混凝土初始坍落度和坍落度经时损失，同时制备工艺简单，生产过程绿色环保，成本低。
Anti-mud polycarboxylate superplasticizer and preparation method thereof
一种抗泥型聚羧酸减水剂及其制备方法
YAN XINHUA (author) / SHE PEIFENG (author) / LI XINGUO (author) / LIU GUIQIANG (author) / LI YUNWEI (author)
2022-01-21
Patent
Electronic Resource
Chinese
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