A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Air-entraining and viscosity-reducing type water reducing agent and synthesis method thereof
The invention relates to the technical field of water reducing agents, and discloses an air-entraining and viscosity-reducing type water reducing agent and a synthesis method thereof in order to solve the problems of heavy production burden and unstable functional effect caused by multiple types of auxiliaries and large dosage, the air-entraining and viscosity-reducing type water reducing agent comprises a water reducing main chain and a modified side chain grafted to the water reducing main chain; the modified side chain comprises a short chain and a long chain, the end part, far away from the main chain, of the long chain is combined with the end part, far away from the main chain, of the short chain through a non-covalent bond, the short chain can be obtained by grafting phenyl octanol to the water-reducing main chain, and the long chain can be obtained by grafting monooctyl phenol polyethylene glycol to the water-reducing main chain. According to the air-entraining and viscosity-reducing type water reducing agent disclosed by the invention, through specific improvement on a molecular chain structure, free water in gaps in a concrete system can be remarkably improved, the viscosity of concrete is reduced, namely, the water reducing effect is improved, and an air-entraining effect can be exerted by constructing a bubble hydrophobic phase at the end part of a side chain.
本发明涉及减水剂技术领域，针对助剂种类多、用量大而造成生产负担重，且功能效果不稳定的问题，公开了一种引气降黏型减水剂及其合成方法，所述引气降黏型减水剂包括减水主链以及接枝于减水主链的改性侧链；改性侧链包括短链和长链，且长链远离主链的端部与短链远离主链的端部通过非共价键结合，其中，短链可由苯基辛醇接枝于减水主链得到，长链可由单辛基酚聚乙二醇接枝于减水主链得到。本发明的引气降黏型减水剂，通过对分子链结构的特定改进，可显著提升混凝土体系中间隙自由水，降低混凝土黏性，即提升减水效果，还能通过侧链端部构建气泡疏水相而发挥引气效果。
Air-entraining and viscosity-reducing type water reducing agent and synthesis method thereof
The invention relates to the technical field of water reducing agents, and discloses an air-entraining and viscosity-reducing type water reducing agent and a synthesis method thereof in order to solve the problems of heavy production burden and unstable functional effect caused by multiple types of auxiliaries and large dosage, the air-entraining and viscosity-reducing type water reducing agent comprises a water reducing main chain and a modified side chain grafted to the water reducing main chain; the modified side chain comprises a short chain and a long chain, the end part, far away from the main chain, of the long chain is combined with the end part, far away from the main chain, of the short chain through a non-covalent bond, the short chain can be obtained by grafting phenyl octanol to the water-reducing main chain, and the long chain can be obtained by grafting monooctyl phenol polyethylene glycol to the water-reducing main chain. According to the air-entraining and viscosity-reducing type water reducing agent disclosed by the invention, through specific improvement on a molecular chain structure, free water in gaps in a concrete system can be remarkably improved, the viscosity of concrete is reduced, namely, the water reducing effect is improved, and an air-entraining effect can be exerted by constructing a bubble hydrophobic phase at the end part of a side chain.
本发明涉及减水剂技术领域，针对助剂种类多、用量大而造成生产负担重，且功能效果不稳定的问题，公开了一种引气降黏型减水剂及其合成方法，所述引气降黏型减水剂包括减水主链以及接枝于减水主链的改性侧链；改性侧链包括短链和长链，且长链远离主链的端部与短链远离主链的端部通过非共价键结合，其中，短链可由苯基辛醇接枝于减水主链得到，长链可由单辛基酚聚乙二醇接枝于减水主链得到。本发明的引气降黏型减水剂，通过对分子链结构的特定改进，可显著提升混凝土体系中间隙自由水，降低混凝土黏性，即提升减水效果，还能通过侧链端部构建气泡疏水相而发挥引气效果。
Air-entraining and viscosity-reducing type water reducing agent and synthesis method thereof
一种引气降黏型减水剂及其合成方法
HUANG SONG (author)
2024-11-08
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
| European Patent Office | 2015
Viscosity reduction type water reducing agent and preparation method thereof
| European Patent Office | 2020
Viscosity-reducing water reducing agent and preparation method and application thereof
| European Patent Office | 2021