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Amphoteric polycarboxylate superplasticizer and preparation method thereof
The invention relates to the field of concrete admixtures, and discloses an amphoteric polycarboxylate superplasticizer and a synthesis method thereof.The amphoteric polycarboxylate superplasticizer comprises, by weight, 240-300 parts of polyether monomers, 15-20 parts of unsaturated acid, 5-8 parts of self-made amphoteric functional monomers, 0.3-0.5 part of reducing agents, 1-2 parts of hydrogenperoxide, 0.9-1.2 parts of molecular weight regulators, 0.006-0.008 part of metal accelerators and 180-240 parts of water. The amphoteric polycarboxylate superplasticizer is synthesized through freeradical polymerization at room temperature, is short in reaction time, energy-saving and environment-friendly, and has a viscosity reduction function in concrete due to the fact that the molecular structure of the amphoteric polycarboxylate superplasticizer contains amphoteric functional monomers; anions and cation groups in the structure can resist bacterial adhesion, prevent the formation of a biological mycoderm and inhibit bacterial reproduction, so that the antibacterial effect is achieved. The amphoteric polycarboxylate superplasticizer synthesized by the method is high in water reducingrate and good in slump loss resistance, and the early strength can also be improved.
本发明涉及混凝土外加剂领域，公开一种两性型聚羧酸减水及其合成方法，以重量份计，本发明的两性型聚羧酸减水剂包括聚醚单体240～300份、不饱和酸15～20份、自制两性功能单体5～8份、还原剂0.3～0.5份、双氧水1～2份、分子量调节剂0.9～1.2份、金属促进剂0.006～0.008份、水180～240份。在室温下通过自由基聚合合成，本发明反应时间短，节能环保，同时由于两性型聚羧酸减水剂分子结构中含有两性功能单体，在混凝土中具备降粘功能；结构中的阴离子和阳离子基团能够抵抗细菌黏附，防止生物菌膜的形成，抑制细菌繁殖，使其具有抗菌的功效。本发明合成的两性型聚羧酸减水剂减水率高，保坍性能好，还能提高早期强度。
Amphoteric polycarboxylate superplasticizer and preparation method thereof
The invention relates to the field of concrete admixtures, and discloses an amphoteric polycarboxylate superplasticizer and a synthesis method thereof.The amphoteric polycarboxylate superplasticizer comprises, by weight, 240-300 parts of polyether monomers, 15-20 parts of unsaturated acid, 5-8 parts of self-made amphoteric functional monomers, 0.3-0.5 part of reducing agents, 1-2 parts of hydrogenperoxide, 0.9-1.2 parts of molecular weight regulators, 0.006-0.008 part of metal accelerators and 180-240 parts of water. The amphoteric polycarboxylate superplasticizer is synthesized through freeradical polymerization at room temperature, is short in reaction time, energy-saving and environment-friendly, and has a viscosity reduction function in concrete due to the fact that the molecular structure of the amphoteric polycarboxylate superplasticizer contains amphoteric functional monomers; anions and cation groups in the structure can resist bacterial adhesion, prevent the formation of a biological mycoderm and inhibit bacterial reproduction, so that the antibacterial effect is achieved. The amphoteric polycarboxylate superplasticizer synthesized by the method is high in water reducingrate and good in slump loss resistance, and the early strength can also be improved.
本发明涉及混凝土外加剂领域，公开一种两性型聚羧酸减水及其合成方法，以重量份计，本发明的两性型聚羧酸减水剂包括聚醚单体240～300份、不饱和酸15～20份、自制两性功能单体5～8份、还原剂0.3～0.5份、双氧水1～2份、分子量调节剂0.9～1.2份、金属促进剂0.006～0.008份、水180～240份。在室温下通过自由基聚合合成，本发明反应时间短，节能环保，同时由于两性型聚羧酸减水剂分子结构中含有两性功能单体，在混凝土中具备降粘功能；结构中的阴离子和阳离子基团能够抵抗细菌黏附，防止生物菌膜的形成，抑制细菌繁殖，使其具有抗菌的功效。本发明合成的两性型聚羧酸减水剂减水率高，保坍性能好，还能提高早期强度。
Amphoteric polycarboxylate superplasticizer and preparation method thereof
一种两性型聚羧酸减水剂及其制备方法
SUN YOU (author) / CHEN JIE (author) / DENG NI (author) / FANG SHICHANG (author) / TIAN YINGBING (author)
2021-03-16
Patent
Electronic Resource
Chinese
IPC:
C08F
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
,
Makromolekulare Verbindungen, erhalten durch Reaktionen, an denen nur ungesättigte Kohlenstoff-Kohlenstoff-Bindungen beteiligt sind
/
C04B
Kalk
,
LIME
/
C07C
ACYCLIC OR CARBOCYCLIC COMPOUNDS
,
Acyclische oder carbocyclische Verbindungen
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