Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Concrete anti-sensitive polycarboxylate superplasticizer and preparation method thereof
The invention provides a concrete anti-sensitive polycarboxylate superplasticizer and a preparation method thereof. The concrete anti-sensitive polycarboxylate superplasticizer is prepared from the following materials: deionized water, block modified unsaturated polyoxyethylene ether, isopentenol polyoxyethylene ether, unsaturated carboxylic acid, an ester functional monomer, a sulfonic acid functional monomer, a chain transfer agent, an oxidizing agent, an emulsifying agent and a reducing agent. According to the invention, the molecular side chains of a plurality of polyethers including the block unsaturated polyoxyethylene ether and the isopentenol polyoxyethylene ether are combined, so that the characteristics of different side chain molecules can be fully exerted, the sensitivity is low, the mixing amount range is large, the cement workability is good, and the use cost is low; emulsion polymerization is adopted, so that the reaction efficiency of ester functional monomers is effectively improved, and the performance of the superplasticizer is improved; and the superplasticizer is green and environment-friendly, the production process is simple, and the product does not containchloride ions and heavy metal components and has no corrosion harm to concrete reinforcing steel bars.
本发明提供了一种混凝土抗敏感型聚羧酸减水剂及其制备方法，该混凝土抗敏感型聚羧酸减水剂采用包括如下材料制成：去离子水、嵌段改性不饱和聚氧乙烯醚、异戊烯醇聚氧乙烯醚、不饱和羧酸、酯类功能性单体、磺酸类功能性单体、链转移剂、氧化剂、乳化剂、还原剂；本发明采用嵌段不饱和聚氧乙烯醚、异戊烯醇聚氧乙烯醚分子侧链多种聚醚相结合，可以充分发挥不同侧链分子的特点，敏感度低，掺量范围大，水泥和易性好，使用成本低；采用乳液聚合，有效提高酯类功能性单体的反应效率，提高减水剂的性能；绿色环保，生产过程简单，产品中不含氯离子及重金属成分，对混凝土钢筋无腐蚀危害。
Concrete anti-sensitive polycarboxylate superplasticizer and preparation method thereof
The invention provides a concrete anti-sensitive polycarboxylate superplasticizer and a preparation method thereof. The concrete anti-sensitive polycarboxylate superplasticizer is prepared from the following materials: deionized water, block modified unsaturated polyoxyethylene ether, isopentenol polyoxyethylene ether, unsaturated carboxylic acid, an ester functional monomer, a sulfonic acid functional monomer, a chain transfer agent, an oxidizing agent, an emulsifying agent and a reducing agent. According to the invention, the molecular side chains of a plurality of polyethers including the block unsaturated polyoxyethylene ether and the isopentenol polyoxyethylene ether are combined, so that the characteristics of different side chain molecules can be fully exerted, the sensitivity is low, the mixing amount range is large, the cement workability is good, and the use cost is low; emulsion polymerization is adopted, so that the reaction efficiency of ester functional monomers is effectively improved, and the performance of the superplasticizer is improved; and the superplasticizer is green and environment-friendly, the production process is simple, and the product does not containchloride ions and heavy metal components and has no corrosion harm to concrete reinforcing steel bars.
本发明提供了一种混凝土抗敏感型聚羧酸减水剂及其制备方法，该混凝土抗敏感型聚羧酸减水剂采用包括如下材料制成：去离子水、嵌段改性不饱和聚氧乙烯醚、异戊烯醇聚氧乙烯醚、不饱和羧酸、酯类功能性单体、磺酸类功能性单体、链转移剂、氧化剂、乳化剂、还原剂；本发明采用嵌段不饱和聚氧乙烯醚、异戊烯醇聚氧乙烯醚分子侧链多种聚醚相结合，可以充分发挥不同侧链分子的特点，敏感度低，掺量范围大，水泥和易性好，使用成本低；采用乳液聚合，有效提高酯类功能性单体的反应效率，提高减水剂的性能；绿色环保，生产过程简单，产品中不含氯离子及重金属成分，对混凝土钢筋无腐蚀危害。
Concrete anti-sensitive polycarboxylate superplasticizer and preparation method thereof
一种混凝土抗敏感型聚羧酸减水剂及其制备方法
LIN CHUNDONG (Autor:in) / ZHENG JIANMIN (Autor:in) / BAO FENGLI (Autor:in) / YU XIAORONG (Autor:in) / WU ZHULIANG (Autor:in) / XIE ZHONGHUI (Autor:in) / HUI YONGPAN (Autor:in)
05.05.2020
Patent
Elektronische Ressource
Chinesisch
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