Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylic acid high-performance water reducing agent with high water reducing performance and low collapse loss and preparation method of polycarboxylic acid high-performance water reducing agent
The invention relates to a polycarboxylic acid high-performance water reducing agent with high water reduction and low collapse loss. The polycarboxylic acid high-performance water reducing agent is prepared from the synthetic raw materials: a methallyl alcohol polyoxyethylene ether comonomer with large molecular weight, completely esterified isomeric ester, an unsaturated carboxylic acid comonomer, a reactive initiator, an oxidizing agent, liquid caustic soda and water. The water reducing agent can integrate the advantages of two water reducing agents, namely an ester water reducing agent andan ether water reducing agent, and make up the respective defects. The reactivity of the completely esterified isomeric ester is high; the reaction of the methyl allyl alcohol polyoxyethylene ether comonomer with large molecular weight and the unsaturated carboxylic acid comonomer can be promoted; the alcohol head has the adjustable hydrophobic chain segment, and the molecular weight and the hydrophilic-hydrophobic ratio can be adjusted according to different ground materials, so that the prepared water reducing agent has wide adaptability, and good workability and good collapse resistance can be ensured. Meanwhile, the polycarboxylic acid high-performance water reducing agent prepared from the raw materials is high in steric hindrance effect, so that cement particles are more dispersed,and a better water reducing effect is achieved.
本发明的一种高减水、低塌损聚羧酸高性能减水剂，合成原料为大分子量的甲基烯丙醇聚氧乙烯醚共聚单体、完全酯化的异构酯、不饱和羧酸共聚单体、反应性引发剂、氧化剂、液碱和水。该减水剂能够综合酯类减水剂和醚类减水剂两种减水剂的优点，互相弥补各自缺点。完全酯化的异构酯反应性高，可促进大分子量的甲基烯丙醇聚氧乙烯醚共聚单体和不饱和羧酸共聚单体的反应，具有协同增效的效果，其醇头具有可调整的疏水链段能够根据不同地材调整分子量和亲疏水比例，使得制备的减水剂适应性更广，且能保证良好的和易性和保塌性。同时，利用本发明中原料制成的聚羧酸减水剂立体位阻效应强，使得水泥颗粒更加分散而获得更好的减水效果。
Polycarboxylic acid high-performance water reducing agent with high water reducing performance and low collapse loss and preparation method of polycarboxylic acid high-performance water reducing agent
The invention relates to a polycarboxylic acid high-performance water reducing agent with high water reduction and low collapse loss. The polycarboxylic acid high-performance water reducing agent is prepared from the synthetic raw materials: a methallyl alcohol polyoxyethylene ether comonomer with large molecular weight, completely esterified isomeric ester, an unsaturated carboxylic acid comonomer, a reactive initiator, an oxidizing agent, liquid caustic soda and water. The water reducing agent can integrate the advantages of two water reducing agents, namely an ester water reducing agent andan ether water reducing agent, and make up the respective defects. The reactivity of the completely esterified isomeric ester is high; the reaction of the methyl allyl alcohol polyoxyethylene ether comonomer with large molecular weight and the unsaturated carboxylic acid comonomer can be promoted; the alcohol head has the adjustable hydrophobic chain segment, and the molecular weight and the hydrophilic-hydrophobic ratio can be adjusted according to different ground materials, so that the prepared water reducing agent has wide adaptability, and good workability and good collapse resistance can be ensured. Meanwhile, the polycarboxylic acid high-performance water reducing agent prepared from the raw materials is high in steric hindrance effect, so that cement particles are more dispersed,and a better water reducing effect is achieved.
本发明的一种高减水、低塌损聚羧酸高性能减水剂，合成原料为大分子量的甲基烯丙醇聚氧乙烯醚共聚单体、完全酯化的异构酯、不饱和羧酸共聚单体、反应性引发剂、氧化剂、液碱和水。该减水剂能够综合酯类减水剂和醚类减水剂两种减水剂的优点，互相弥补各自缺点。完全酯化的异构酯反应性高，可促进大分子量的甲基烯丙醇聚氧乙烯醚共聚单体和不饱和羧酸共聚单体的反应，具有协同增效的效果，其醇头具有可调整的疏水链段能够根据不同地材调整分子量和亲疏水比例，使得制备的减水剂适应性更广，且能保证良好的和易性和保塌性。同时，利用本发明中原料制成的聚羧酸减水剂立体位阻效应强，使得水泥颗粒更加分散而获得更好的减水效果。
Polycarboxylic acid high-performance water reducing agent with high water reducing performance and low collapse loss and preparation method of polycarboxylic acid high-performance water reducing agent
一种高减水、低塌损聚羧酸高性能减水剂及其制备方法
ZHONG YILIN (Autor:in) / LU ZHIMING (Autor:in) / PAN RUIXIAN (Autor:in) / FU HUILING (Autor:in) / ZENG SHIJIAO (Autor:in)
17.04.2020
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2021
Preparation method of polycarboxylic acid high-performance water reducing agent
| Europäisches Patentamt | 2023
Polycarboxylic acid high-performance water reducing agent and preparation method thereof
| Europäisches Patentamt | 2016
Preparation method of powdery polycarboxylic acid high-performance water reducing agent
| Europäisches Patentamt | 2015
Polycarboxylic acid high-performance water reducing agent and preparation method thereof
| Europäisches Patentamt | 2024