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Super early strength polycarboxylate superplasticizer and preparation method thereof
The invention belongs to the technical field of superplasticizers and preparation thereof, and provides a super early strength polycarboxylate superplasticizer and a preparation method thereof. The super early strength polycarboxylate superplasticizer is prepared by mixing isopentenol polyoxyethylene ether, super-early-strength functional monomer ester, acrylic acid, acrylamide, a chain transfer agent, a hydrogen peroxide solution, ascorbic acid and a sodium hydroxide solution. The super early strength functional monomer ester is introduced into the formula system, so that the early strength of concrete can be improved; early strength groups in the polycarboxylate superplasticizer can adsorb a large amount of water through hydrogen bonds in a cement system to form an adsorption hydration film, so that agglomeration of cement particles is effectively prevented, the content of fine particles in cement paste is increased, the water loss is effectively reduced, and the strength of concrete is remarkably improved.
本发明属于本发明涉及减水剂及其制备技术领域，提供了一种超级早强聚羧酸减水剂及其制备方法，该超级早强聚羧酸减水剂由异戊烯醇聚氧乙烯醚、超早强功能单体酯、丙烯酸、丙烯酰胺、链转移剂、双氧水溶液、抗坏血酸、氢氧化钠溶液混合制备而成，本发明配方体系中引入超早强功能单体酯能够提高混凝土的早期强度，因为聚羧酸减水剂中的早强基团在水泥体系中，能够通过的氢键吸附大量的水，形成吸附水化膜，有效防止水泥颗粒的凝聚，增加水泥浆中细颗粒的含量，有效地降低失水量，使得混凝土强度得到显著提高。
Super early strength polycarboxylate superplasticizer and preparation method thereof
The invention belongs to the technical field of superplasticizers and preparation thereof, and provides a super early strength polycarboxylate superplasticizer and a preparation method thereof. The super early strength polycarboxylate superplasticizer is prepared by mixing isopentenol polyoxyethylene ether, super-early-strength functional monomer ester, acrylic acid, acrylamide, a chain transfer agent, a hydrogen peroxide solution, ascorbic acid and a sodium hydroxide solution. The super early strength functional monomer ester is introduced into the formula system, so that the early strength of concrete can be improved; early strength groups in the polycarboxylate superplasticizer can adsorb a large amount of water through hydrogen bonds in a cement system to form an adsorption hydration film, so that agglomeration of cement particles is effectively prevented, the content of fine particles in cement paste is increased, the water loss is effectively reduced, and the strength of concrete is remarkably improved.
本发明属于本发明涉及减水剂及其制备技术领域，提供了一种超级早强聚羧酸减水剂及其制备方法，该超级早强聚羧酸减水剂由异戊烯醇聚氧乙烯醚、超早强功能单体酯、丙烯酸、丙烯酰胺、链转移剂、双氧水溶液、抗坏血酸、氢氧化钠溶液混合制备而成，本发明配方体系中引入超早强功能单体酯能够提高混凝土的早期强度，因为聚羧酸减水剂中的早强基团在水泥体系中，能够通过的氢键吸附大量的水，形成吸附水化膜，有效防止水泥颗粒的凝聚，增加水泥浆中细颗粒的含量，有效地降低失水量，使得混凝土强度得到显著提高。
Super early strength polycarboxylate superplasticizer and preparation method thereof
一种超级早强聚羧酸减水剂及其制备方法
SHAO YUAN (author) / XU DAIPENG (author) / CHEN LONGHUA (author)
2021-04-13
Patent
Electronic Resource
Chinese
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