A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-performance polycarboxylate superplasticizer
The invention relates to the field of concrete admixtures, in particular to a high-performance polycarboxylate superplasticizer. The high-performance polycarboxylate superplasticizer comprises a mainwater reducing agent and an auxiliary agent; the main water reducing agent is prepared from, by mass, 10-25 parts of allyl polyoxyethylene ether with a molecular weight of 2000-5000, 30-75 parts of 2-acrylamido-2-methacrylic acid, 2.3-4.9 parts of an initiator, 1.5-2.5 parts of ascorbic acid, 2-3 parts of a chain transfer agent and the balance water; and the auxiliary agent is sodium polyacrylatewith a molecular weight of 1000-2000. The high-performance polycarboxylate superplasticizer provided by the invention is good in dispersity to cement and has good water reducing and dispersing capacity.
本发明涉及混凝土外加剂领域，具体涉及一种高性能聚羧酸减水剂。高性能聚羧酸减水剂，包括主减水剂以及助剂；以所述主减水剂的质量份数计，所述主减水剂包括以下原料：分子量为2000‑5000的烯丙基聚氧乙烯醚10‑25份、2‑丙烯酰胺基‑2‑甲基丙烯酸30‑75份、引发剂2.3‑4.9份、抗坏血酸1.5‑2.5份、链转移剂2‑3份，余量为水；所述助剂为分子量为1000‑2000的聚丙烯酸钠。本发明提供的高性能聚羧酸减水剂对水泥分散性好，具有良好的减水分散能力。
High-performance polycarboxylate superplasticizer
The invention relates to the field of concrete admixtures, in particular to a high-performance polycarboxylate superplasticizer. The high-performance polycarboxylate superplasticizer comprises a mainwater reducing agent and an auxiliary agent; the main water reducing agent is prepared from, by mass, 10-25 parts of allyl polyoxyethylene ether with a molecular weight of 2000-5000, 30-75 parts of 2-acrylamido-2-methacrylic acid, 2.3-4.9 parts of an initiator, 1.5-2.5 parts of ascorbic acid, 2-3 parts of a chain transfer agent and the balance water; and the auxiliary agent is sodium polyacrylatewith a molecular weight of 1000-2000. The high-performance polycarboxylate superplasticizer provided by the invention is good in dispersity to cement and has good water reducing and dispersing capacity.
本发明涉及混凝土外加剂领域，具体涉及一种高性能聚羧酸减水剂。高性能聚羧酸减水剂，包括主减水剂以及助剂；以所述主减水剂的质量份数计，所述主减水剂包括以下原料：分子量为2000‑5000的烯丙基聚氧乙烯醚10‑25份、2‑丙烯酰胺基‑2‑甲基丙烯酸30‑75份、引发剂2.3‑4.9份、抗坏血酸1.5‑2.5份、链转移剂2‑3份，余量为水；所述助剂为分子量为1000‑2000的聚丙烯酸钠。本发明提供的高性能聚羧酸减水剂对水泥分散性好，具有良好的减水分散能力。
High-performance polycarboxylate superplasticizer
一种高性能聚羧酸减水剂
TENG HONGJUN (author) / MEI DONGLIN (author)
2020-10-16
Patent
Electronic Resource
Chinese
| European Patent Office | 2023