A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
The invention discloses a viscosity reduction type polycarboxylate superplasticizer and a preparation method thereof. The viscosity reduction type polycarboxylate superplasticizer has a pH value of 5.5-6, and is prepared from the following raw materials: HPEG, unsaturated carboxylic acid and derivatives thereof, unsaturated carboxylic acid alkyl ester, quaternary ammonium salt monomers, a cross-linking agent, an initiator, a reducing agent, a chain transfer agent, liquid caustic soda and deionized water. According to the invention, the HPEG, the specific unsaturated carboxylic acid and derivatives thereof and the specific quaternary ammonium salt monomers are used as basic raw materials, through the molecular structure design of main and side chain groups and the like, the workability of concrete can be improved under the condition of keeping the fluidity of cement paste, the viscosity value is effectively reduced, the fluidity is improved, and adverse effects on the mechanical properties of the concrete are avoided.
本发明公开了一种降粘型聚羧酸减水剂及其制备方法，其pH＝5.5‑6，由如下原料制成：HPEG、不饱和羧酸及其衍生物、不饱和羧酸烷基酯、季铵盐类单体、交联剂、引发剂、还原剂、链转移剂、液碱和去离子水。本发明以HPEG、特定的不饱和羧酸及其衍生物和特定的季铵盐类单体为基本原料，通过主、侧链基团等分子结构设计，在保持水泥净浆流动度的条件下，能够改善混凝土的和易性，有效的降低了粘度值，改善流动性的效果，且对混凝土的力学性能不产生不良影响。
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
The invention discloses a viscosity reduction type polycarboxylate superplasticizer and a preparation method thereof. The viscosity reduction type polycarboxylate superplasticizer has a pH value of 5.5-6, and is prepared from the following raw materials: HPEG, unsaturated carboxylic acid and derivatives thereof, unsaturated carboxylic acid alkyl ester, quaternary ammonium salt monomers, a cross-linking agent, an initiator, a reducing agent, a chain transfer agent, liquid caustic soda and deionized water. According to the invention, the HPEG, the specific unsaturated carboxylic acid and derivatives thereof and the specific quaternary ammonium salt monomers are used as basic raw materials, through the molecular structure design of main and side chain groups and the like, the workability of concrete can be improved under the condition of keeping the fluidity of cement paste, the viscosity value is effectively reduced, the fluidity is improved, and adverse effects on the mechanical properties of the concrete are avoided.
本发明公开了一种降粘型聚羧酸减水剂及其制备方法，其pH＝5.5‑6，由如下原料制成：HPEG、不饱和羧酸及其衍生物、不饱和羧酸烷基酯、季铵盐类单体、交联剂、引发剂、还原剂、链转移剂、液碱和去离子水。本发明以HPEG、特定的不饱和羧酸及其衍生物和特定的季铵盐类单体为基本原料，通过主、侧链基团等分子结构设计，在保持水泥净浆流动度的条件下，能够改善混凝土的和易性，有效的降低了粘度值，改善流动性的效果，且对混凝土的力学性能不产生不良影响。
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
一种降粘型聚羧酸减水剂及其制备方法
KANG JINGXIN (author) / YANG XIUFANG (author) / CHEN XIAMIN (author) / YU YANHUA (author) / XU ZECHENG (author)
2020-08-04
Patent
Electronic Resource
Chinese
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
| European Patent Office | 2021
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
| European Patent Office | 2021
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
| European Patent Office | 2023
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
| European Patent Office | 2022
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
| European Patent Office | 2020