Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-molecular-weight viscosity reduction type polycarboxylic acid water reducer and preparation method thereof
According to the high-molecular-weight viscosity reduction type polycarboxylic acid water reducer and the preparation method thereof, vinyl trimethoxy silane with lower price is used as a functional monomer, ethylene glycol monovinyl polyethenoxy ether or 4-hydroxybutyl vinyl polyethenoxy ether with higher reaction activity is used as a long-side-chain monomer, and the high-molecular-weight viscosity reduction type polycarboxylic acid water reducer and the preparation method thereof have the advantages that the high-molecular-weight viscosity reduction type polycarboxylic acid water reducer is prepared; meanwhile, a part of low-activity methyl allyl polyoxyethylene ether or isopentene polyoxyethylene ether is added to adjust the reaction rate, the weight-average molecular weight of the polycarboxylate superplasticizer is controlled to be 60000-120000, and the polycarboxylate superplasticizer with the viscosity reduction function and high cost performance is synthesized. Compared with the prior art, the polycarboxylate superplasticizer provided by the invention has higher water reducing performance and viscosity reducing function, and can effectively reduce the viscosity of a concrete system, increase the pumpability and reduce the construction difficulty. The used raw materials are simple, easy to obtain and low in price, the synthesis process is simple, the cost performance of the synthesized product is high, and the market application space is good.
本发明提供了一种大分子量降粘型聚羧酸减水剂及其制备方法，本发明使用价格更低的乙烯基三甲氧基硅烷作为功能单体，使用反应活性更高的乙二醇单乙烯基聚环氧乙烯醚或4‑羟丁基乙烯基聚氧乙烯醚为长侧链单体，同时加入部分低活性的甲基烯丙基聚氧乙烯醚或异戊烯聚环氧乙烯醚调节反应速率，将聚羧酸减水剂重均分子量控制在60000～120000，合成了高性价比的带有降粘功能的聚羧酸减水剂。与现有技术相比，本发明提供的聚羧酸减水剂具有较高的减水性能，同时兼具降粘功能，能够有效降低混凝土体系的粘度，增加泵送性，降低施工难度。使用原材料简单易得，价格便宜，合成工艺简单，合成产物性价比高，具有较好的市场应用空间。
High-molecular-weight viscosity reduction type polycarboxylic acid water reducer and preparation method thereof
According to the high-molecular-weight viscosity reduction type polycarboxylic acid water reducer and the preparation method thereof, vinyl trimethoxy silane with lower price is used as a functional monomer, ethylene glycol monovinyl polyethenoxy ether or 4-hydroxybutyl vinyl polyethenoxy ether with higher reaction activity is used as a long-side-chain monomer, and the high-molecular-weight viscosity reduction type polycarboxylic acid water reducer and the preparation method thereof have the advantages that the high-molecular-weight viscosity reduction type polycarboxylic acid water reducer is prepared; meanwhile, a part of low-activity methyl allyl polyoxyethylene ether or isopentene polyoxyethylene ether is added to adjust the reaction rate, the weight-average molecular weight of the polycarboxylate superplasticizer is controlled to be 60000-120000, and the polycarboxylate superplasticizer with the viscosity reduction function and high cost performance is synthesized. Compared with the prior art, the polycarboxylate superplasticizer provided by the invention has higher water reducing performance and viscosity reducing function, and can effectively reduce the viscosity of a concrete system, increase the pumpability and reduce the construction difficulty. The used raw materials are simple, easy to obtain and low in price, the synthesis process is simple, the cost performance of the synthesized product is high, and the market application space is good.
本发明提供了一种大分子量降粘型聚羧酸减水剂及其制备方法，本发明使用价格更低的乙烯基三甲氧基硅烷作为功能单体，使用反应活性更高的乙二醇单乙烯基聚环氧乙烯醚或4‑羟丁基乙烯基聚氧乙烯醚为长侧链单体，同时加入部分低活性的甲基烯丙基聚氧乙烯醚或异戊烯聚环氧乙烯醚调节反应速率，将聚羧酸减水剂重均分子量控制在60000～120000，合成了高性价比的带有降粘功能的聚羧酸减水剂。与现有技术相比，本发明提供的聚羧酸减水剂具有较高的减水性能，同时兼具降粘功能，能够有效降低混凝土体系的粘度，增加泵送性，降低施工难度。使用原材料简单易得，价格便宜，合成工艺简单，合成产物性价比高，具有较好的市场应用空间。
High-molecular-weight viscosity reduction type polycarboxylic acid water reducer and preparation method thereof
一种大分子量降粘型聚羧酸减水剂及其制备方法
QIN SHI (Autor:in) / HAN LI (Autor:in) / XIONG YULAN (Autor:in) / LI XUAN (Autor:in) / XU HONGTIAN (Autor:in) / LIU SIYANG (Autor:in) / CHEN HUAN (Autor:in)
07.03.2023
Patent
Elektronische Ressource
Chinesisch
Viscosity reduction type polycarboxylic acid water reducer and preparation method thereof
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2023
| Europäisches Patentamt | 2022
| Europäisches Patentamt | 2024
High-water-reduction type EPEG polycarboxylic acid water reducer and preparation method thereof
| Europäisches Patentamt | 2022