A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Stable pumping type slump retaining agent and preparation method thereof
The invention discloses a stable pumping type slump retaining agent and a preparation method thereof, and belongs to the technical field of concrete. The slump retaining agent is mainly prepared by polymerizing the following components in parts by mass: 18.6 to 20.1 parts of polyether alcohol, 301.8 to 310.0 parts of cyclic monomer, 0.3 to 0.9 part of catalyst, 42.5 to 43.6 parts of ester substance, 2.1 to 5.4 parts of reducing agent, 2.5 to 4.4 parts of initiator, 0.8 to 2.6 parts of chain transfer agent, 5.3 to 7.9 parts of neutralizing agent and the balance of water, wherein the total mass of the raw materials is 1000 parts. The polyether monomer is firstly prepared, the acid-ether ratio of the prepared slump retaining agent is determined according to the molecular weight of the prepared polyether, and the coating performance of the molecules of the slump retaining agent is improved. The molecular branch chain of the slump retaining agent is a polyether branch chain which has good flexibility and hydrophilicity and shows the coating performance and high slump retaining performance of the slump retaining agent.
本发明公开了一种稳定泵送型保坍剂及其制备方法，属于混凝土技术领域。本发明的保坍剂原料总质量按1000份计，其主要由下述各组分聚合而成：聚醚醇头18.6‑20.1份，环状单体301.8‑310.0份，催化剂0.3‑0.9份，酯类物质42.5‑43.6份，还原剂2.1‑5.4份，引发剂2.5‑4.4份，链转移剂0.8‑2.6份，中和剂5.3‑7.9份，余量为水。本发明首先制备聚醚单体，根据制备的聚醚分子量决定制备保坍剂的酸醚比，提升保坍剂分子的包覆性能。本发明保坍剂分子支链为聚醚支链，有着很好的柔顺性、亲水性，表现为保坍剂的包覆性能与高保坍性。
Stable pumping type slump retaining agent and preparation method thereof
The invention discloses a stable pumping type slump retaining agent and a preparation method thereof, and belongs to the technical field of concrete. The slump retaining agent is mainly prepared by polymerizing the following components in parts by mass: 18.6 to 20.1 parts of polyether alcohol, 301.8 to 310.0 parts of cyclic monomer, 0.3 to 0.9 part of catalyst, 42.5 to 43.6 parts of ester substance, 2.1 to 5.4 parts of reducing agent, 2.5 to 4.4 parts of initiator, 0.8 to 2.6 parts of chain transfer agent, 5.3 to 7.9 parts of neutralizing agent and the balance of water, wherein the total mass of the raw materials is 1000 parts. The polyether monomer is firstly prepared, the acid-ether ratio of the prepared slump retaining agent is determined according to the molecular weight of the prepared polyether, and the coating performance of the molecules of the slump retaining agent is improved. The molecular branch chain of the slump retaining agent is a polyether branch chain which has good flexibility and hydrophilicity and shows the coating performance and high slump retaining performance of the slump retaining agent.
本发明公开了一种稳定泵送型保坍剂及其制备方法，属于混凝土技术领域。本发明的保坍剂原料总质量按1000份计，其主要由下述各组分聚合而成：聚醚醇头18.6‑20.1份，环状单体301.8‑310.0份，催化剂0.3‑0.9份，酯类物质42.5‑43.6份，还原剂2.1‑5.4份，引发剂2.5‑4.4份，链转移剂0.8‑2.6份，中和剂5.3‑7.9份，余量为水。本发明首先制备聚醚单体，根据制备的聚醚分子量决定制备保坍剂的酸醚比，提升保坍剂分子的包覆性能。本发明保坍剂分子支链为聚醚支链，有着很好的柔顺性、亲水性，表现为保坍剂的包覆性能与高保坍性。
Stable pumping type slump retaining agent and preparation method thereof
一种稳定泵送型保坍剂及其制备方法
KE KAI (author) / XIE YONGNING (author) / LI XIANGGUO (author) / LYU YANG (author) / JIANG BO (author)
2021-06-08
Patent
Electronic Resource
Chinese
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