Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention belongs to the technical field of high polymer materials, and particularly relates to a viscosity reduction type water reducer and a preparation method thereof. A high-molecular polymer with a comb-shaped structure is prepared in a polycondensation mode, and compared with a common naphthalene water reducer, the polymer has the advantage of side chain steric hindrance, and the water reducing rate is higher; and compared with a common polycarboxylate-type water reducer, the water reducer of the invention has the advantages that the polymerization molecular weight is easier to control, the comb-structure high-molecular polymer with smaller molecular weight is obtained, the dispersing capacity of water reducer molecules is improved, the viscosity of concrete is reduced, a higher polyether conversion rate can be achieved, and the gas content of the concrete under the high mixing amount of the water reducer is reduced.
本发明属于高分子材料技术领域，具体涉及一种降粘型减水剂及其制备方法。本发明通过缩聚的方式制得梳状结构高分子聚合物，对比普通萘系减水剂有侧链空间位阻的优势，减水率更高；对比普通聚羧酸系减水剂更容易控制聚合分子量，得到较小分子量的梳状结构高分子聚合物，提高减水剂分子的分散能力、降低混凝土粘度，还可以达到更高的聚醚转化率，降低减水剂高掺量下的混凝土含气量。
The invention belongs to the technical field of high polymer materials, and particularly relates to a viscosity reduction type water reducer and a preparation method thereof. A high-molecular polymer with a comb-shaped structure is prepared in a polycondensation mode, and compared with a common naphthalene water reducer, the polymer has the advantage of side chain steric hindrance, and the water reducing rate is higher; and compared with a common polycarboxylate-type water reducer, the water reducer of the invention has the advantages that the polymerization molecular weight is easier to control, the comb-structure high-molecular polymer with smaller molecular weight is obtained, the dispersing capacity of water reducer molecules is improved, the viscosity of concrete is reduced, a higher polyether conversion rate can be achieved, and the gas content of the concrete under the high mixing amount of the water reducer is reduced.
本发明属于高分子材料技术领域，具体涉及一种降粘型减水剂及其制备方法。本发明通过缩聚的方式制得梳状结构高分子聚合物，对比普通萘系减水剂有侧链空间位阻的优势，减水率更高；对比普通聚羧酸系减水剂更容易控制聚合分子量，得到较小分子量的梳状结构高分子聚合物，提高减水剂分子的分散能力、降低混凝土粘度，还可以达到更高的聚醚转化率，降低减水剂高掺量下的混凝土含气量。
Viscosity reduction type water reducer and preparation method thereof
一种降粘型减水剂及其制备方法
10.09.2021
Patent
Elektronische Ressource
Chinesisch
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