A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
High-adaptability polycondensation type carboxylate water reducing agent as well as preparation method and application thereof
The invention belongs to the technical field of concrete admixtures, and particularly relates to a high-adaptability polycondensation type carboxylate water reducer as well as a preparation method and application thereof. The high-adaptability polycondensation type carboxylate water reducing agent is formed by polycondensation of a monomer A, a monomer B and a monomer C, the monomer A is a phenyl isocyanate compound with carboxyl, and is prepared by reacting a phenyl isocyanate monomer with a carboxyl monomer with hydroxyl or amino; the monomer B is a phenyl isocyanate compound with long-chain polyether and is prepared by reacting a phenyl isocyanate monomer with a methoxy polyoxyethylene ether monomer; the monomer C is an aldehyde monomer and is selected from formaldehyde, acetaldehyde, glyoxylic acid and benzaldehyde. According to the water reducing agent, a benzene ring structure is introduced into a main chain, so that the water reducing agent has better air entraining performance, and compared with a traditional polycarboxylic acid water reducing agent, the workability, the workability and the adaptability to cement of concrete can be improved.
本发明属于混凝土外加剂技术领域，具体涉及一种高适应性缩聚型羧酸盐减水剂、制备方法及其应用。所述高适应性缩聚型羧酸盐减水剂由单体A、单体B和单体C缩聚而成；所述单体A为带羧基的苯基异氰酸酯类化合物，由苯基异氰酸酯类单体与带羟基或胺基的羧基单体反应而成；所述单体B为带长链聚醚的苯基异氰酸酯类化合物，由苯基异氰酸酯类单体与甲氧基聚氧乙烯醚单体反应而成；所述单体C为醛类单体，选自甲醛、乙醛、乙醛酸、苯甲醛。该减水剂是在主链中引入苯环结构，使其具有更好的引气性能，与传统聚羧酸减水剂相比能提高混凝土的工作性、和易性及对水泥的适应性能。
High-adaptability polycondensation type carboxylate water reducing agent as well as preparation method and application thereof
The invention belongs to the technical field of concrete admixtures, and particularly relates to a high-adaptability polycondensation type carboxylate water reducer as well as a preparation method and application thereof. The high-adaptability polycondensation type carboxylate water reducing agent is formed by polycondensation of a monomer A, a monomer B and a monomer C, the monomer A is a phenyl isocyanate compound with carboxyl, and is prepared by reacting a phenyl isocyanate monomer with a carboxyl monomer with hydroxyl or amino; the monomer B is a phenyl isocyanate compound with long-chain polyether and is prepared by reacting a phenyl isocyanate monomer with a methoxy polyoxyethylene ether monomer; the monomer C is an aldehyde monomer and is selected from formaldehyde, acetaldehyde, glyoxylic acid and benzaldehyde. According to the water reducing agent, a benzene ring structure is introduced into a main chain, so that the water reducing agent has better air entraining performance, and compared with a traditional polycarboxylic acid water reducing agent, the workability, the workability and the adaptability to cement of concrete can be improved.
本发明属于混凝土外加剂技术领域，具体涉及一种高适应性缩聚型羧酸盐减水剂、制备方法及其应用。所述高适应性缩聚型羧酸盐减水剂由单体A、单体B和单体C缩聚而成；所述单体A为带羧基的苯基异氰酸酯类化合物，由苯基异氰酸酯类单体与带羟基或胺基的羧基单体反应而成；所述单体B为带长链聚醚的苯基异氰酸酯类化合物，由苯基异氰酸酯类单体与甲氧基聚氧乙烯醚单体反应而成；所述单体C为醛类单体，选自甲醛、乙醛、乙醛酸、苯甲醛。该减水剂是在主链中引入苯环结构，使其具有更好的引气性能，与传统聚羧酸减水剂相比能提高混凝土的工作性、和易性及对水泥的适应性能。
High-adaptability polycondensation type carboxylate water reducing agent as well as preparation method and application thereof
一种高适应性缩聚型羧酸盐减水剂、制备方法及其应用
YANG YONG (author) / WANG BING (author) / RAN QIANPING (author) / WANG TAO (author) / SHU XIN (author) / YAN HAN (author) / HONG JINXIANG (author) / LU JIAYUE (author)
2023-03-14
Patent
Electronic Resource
Chinese
| European Patent Office | 2024
| European Patent Office | 2024
| European Patent Office | 2020
| European Patent Office | 2024
| European Patent Office | 2015