A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Slow-release slump retaining agent and preparation method thereof
The invention relates to a slow-release slump retaining agent and a preparation method thereof. The slow-release slump retaining agent is prepared from the following raw materials: 2000-3000 parts of unsaturated polyether macromonomer; 5-15 parts of an initiator; 40 to 120 parts of unsaturated acid; 150 to 300 parts of an unsaturated functional monomer; and 1500 to 2000 parts of water. Wherein the unsaturated functional monomer contains a hydroxyl group, a sulfonic acid group and an ester group. According to the slow-release slump retaining agent prepared by the invention, unsaturated functional monomers containing hydroxyl, sulfonic acid groups and ester groups are introduced, hydration of cement in concrete is hindered, so that a slow-release effect is achieved, when the slow-release slump retaining agent prepared by the invention is matched with a common water reducing agent for use, the dosage of the water reducing agent can be properly reduced, and the cost performance is higher; meanwhile, the dosage of the slow-release slump retaining agent can be increased, and the long-time slump retaining requirement of construction is met.
本发明涉及一种缓释型保坍剂及其制备方法，缓释型保坍剂的制备原料包括：不饱和聚醚大单体2000～3000份；引发剂5～15份；不饱和酸40～120份；不饱和功能单体150～300份；以及水1500～2000份；其中，不饱和功能单体中含有羟基、磺酸基和酯基。本发明制得缓释型保坍剂引入了含有羟基、磺酸基和酯基的不饱和功能单体，阻碍了混凝土中水泥的水化，从而起到缓释作用，本发明制得的缓释型保坍剂与普通减水剂配合使用时，可适当减少减水剂用量，性价比更高；同时可以增加缓释型保坍剂用量，满足施工长时间保坍要求。
Slow-release slump retaining agent and preparation method thereof
The invention relates to a slow-release slump retaining agent and a preparation method thereof. The slow-release slump retaining agent is prepared from the following raw materials: 2000-3000 parts of unsaturated polyether macromonomer; 5-15 parts of an initiator; 40 to 120 parts of unsaturated acid; 150 to 300 parts of an unsaturated functional monomer; and 1500 to 2000 parts of water. Wherein the unsaturated functional monomer contains a hydroxyl group, a sulfonic acid group and an ester group. According to the slow-release slump retaining agent prepared by the invention, unsaturated functional monomers containing hydroxyl, sulfonic acid groups and ester groups are introduced, hydration of cement in concrete is hindered, so that a slow-release effect is achieved, when the slow-release slump retaining agent prepared by the invention is matched with a common water reducing agent for use, the dosage of the water reducing agent can be properly reduced, and the cost performance is higher; meanwhile, the dosage of the slow-release slump retaining agent can be increased, and the long-time slump retaining requirement of construction is met.
本发明涉及一种缓释型保坍剂及其制备方法，缓释型保坍剂的制备原料包括：不饱和聚醚大单体2000～3000份；引发剂5～15份；不饱和酸40～120份；不饱和功能单体150～300份；以及水1500～2000份；其中，不饱和功能单体中含有羟基、磺酸基和酯基。本发明制得缓释型保坍剂引入了含有羟基、磺酸基和酯基的不饱和功能单体，阻碍了混凝土中水泥的水化，从而起到缓释作用，本发明制得的缓释型保坍剂与普通减水剂配合使用时，可适当减少减水剂用量，性价比更高；同时可以增加缓释型保坍剂用量，满足施工长时间保坍要求。
Slow-release slump retaining agent and preparation method thereof
一种缓释型保坍剂及其制备方法
QIU NIANLI (author) / XIONG QIUMIN (author) / ZHAO YUWEI (author) / CHEN XIAOBIN (author) / HUANG DEDONG (author)
2022-04-29
Patent
Electronic Resource
Chinese
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