A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Viscosity and water reducing agent as well as preparation method and application thereof
The invention relates to a viscosity and water reducing agent as well as a preparation method and application thereof. The viscosity and water reducing agent comprises a structural unit A derived from a polyether monomer, a structural unit B derived from an acrylic acid monomer, a structural unit C derived from a methyl methacrylate monomer, a structural unit D derived from a 2-acrylamido-2-methylpropanesulfonic acid monomer and a structural unit E derived from a polyether amine monomer, the molar ratio of the structural unit B to the structural unit A is (2.0-4.0): 1, the molar ratio of the structural unit C to the structural unit A is (0.07-0.10): 1, and the molar ratio of the structural unit D to the structural unit A is (0.50-0.70): 1. Functionalization of the polycarboxylate superplasticizer is realized by introducing functional groups with different functions and controlling the polymerization degree of a main chain and the length of a side chain, high strength of concrete is realized, the viscosity of the concrete is reduced, the expansion degree of the concrete is improved, and the flow velocity of the concrete is accelerated, so that the working performance of the concrete is improved, and the service life of the concrete is prolonged. And construction requirements are met.
本发明涉及一种降粘减水剂及其制备方法与应用，所述降粘减水剂包括衍生自聚醚类单体的结构单元A、衍生自丙烯酸类单体的结构单元B、衍生自甲基丙烯酸甲酯类单体的结构单元C、衍生自2‑丙烯酰胺基‑2‑甲基丙磺酸类单体的结构单元D和衍生自聚醚胺类单体的结构单元E，其中，所述结构单元B和结构单元A的摩尔比为2.0‑4.0:1，所述结构单元C和结构单元A的摩尔比为0.07‑0.10:1，所述结构单元D和结构单元A的摩尔比为0.50‑0.70:1。本发明的降粘减水剂通过引入不同功能的官能团、控制主链聚合度以及侧链长度等条件来实现聚羧酸减水剂的功能化，实现了混凝土高强度的同时，降低混凝土粘度，提升混凝土扩展度，加快混凝土流速，从而改善混凝土工作性能，满足施工要求。
Viscosity and water reducing agent as well as preparation method and application thereof
The invention relates to a viscosity and water reducing agent as well as a preparation method and application thereof. The viscosity and water reducing agent comprises a structural unit A derived from a polyether monomer, a structural unit B derived from an acrylic acid monomer, a structural unit C derived from a methyl methacrylate monomer, a structural unit D derived from a 2-acrylamido-2-methylpropanesulfonic acid monomer and a structural unit E derived from a polyether amine monomer, the molar ratio of the structural unit B to the structural unit A is (2.0-4.0): 1, the molar ratio of the structural unit C to the structural unit A is (0.07-0.10): 1, and the molar ratio of the structural unit D to the structural unit A is (0.50-0.70): 1. Functionalization of the polycarboxylate superplasticizer is realized by introducing functional groups with different functions and controlling the polymerization degree of a main chain and the length of a side chain, high strength of concrete is realized, the viscosity of the concrete is reduced, the expansion degree of the concrete is improved, and the flow velocity of the concrete is accelerated, so that the working performance of the concrete is improved, and the service life of the concrete is prolonged. And construction requirements are met.
本发明涉及一种降粘减水剂及其制备方法与应用，所述降粘减水剂包括衍生自聚醚类单体的结构单元A、衍生自丙烯酸类单体的结构单元B、衍生自甲基丙烯酸甲酯类单体的结构单元C、衍生自2‑丙烯酰胺基‑2‑甲基丙磺酸类单体的结构单元D和衍生自聚醚胺类单体的结构单元E，其中，所述结构单元B和结构单元A的摩尔比为2.0‑4.0:1，所述结构单元C和结构单元A的摩尔比为0.07‑0.10:1，所述结构单元D和结构单元A的摩尔比为0.50‑0.70:1。本发明的降粘减水剂通过引入不同功能的官能团、控制主链聚合度以及侧链长度等条件来实现聚羧酸减水剂的功能化，实现了混凝土高强度的同时，降低混凝土粘度，提升混凝土扩展度，加快混凝土流速，从而改善混凝土工作性能，满足施工要求。
Viscosity and water reducing agent as well as preparation method and application thereof
一种降粘减水剂及其制备方法与应用
MA XUEYING (author) / WANG HONGWEI (author)
2022-03-11
Patent
Electronic Resource
Chinese
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