Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Amphoteric polycarboxylate superplasticizer and preparation method thereof
The invention provides an amphoteric polycarboxylate superplasticizer and a preparation method thereof. The superplasticizer comprises an unsaturated polyether macromonomer, an acrylamide monomer containing phenylate, diacetone acrylamide, (methyl) acrylic acid, (methyl) propylene sulfonate, an initiator, a reducing agent and a chain transfer agent. The acrylamide monomer containing phenylate is obtained by carrying out amidation reaction on acryloyl chloride and aminophenyl ether, and each benzene ring in the aminophenyl ether structure is provided with at least one amino group. The superplasticizer comprises a long side chain formed by the unsaturated polyether macromonomer and a short side chain formed by other monomers, the long-chain and short-chain comb-shaped structure and functional group matched superplasticizer can give full play to the effect of functional groups to form yin-yang amphoteric property, embedding of the functional groups and entanglement between long side chains are avoided, and the retarding effect can be improved under the condition that dispersity and fluidity are not reduced. The superplasticizer is high in water reducing rate, good in slump loss resistance, simple in synthesis process, low in energy consumption, green and environmentally friendly.
本发明提供了一种两性聚羧酸减水剂及其制备方法，所述减水剂包括不饱和聚醚类大单体，含苯醚丙烯酰胺单体，双丙酮丙烯酰胺，(甲基)丙烯酸，(甲基)丙烯磺酸盐，引发剂，还原剂，链转移剂，所述含苯醚丙烯酰胺单体由丙烯酰氯和氨基苯醚经酰胺化反应得到，所述氨基苯醚结构中每个苯环上至少带有一个氨基。本发明减水剂包括不饱和聚醚类大单体形成的长侧链和其他单体形成的短侧链，这种长短链梳形结构和官能团搭配的减水剂能够充分发挥功能性官能团的作用而成阴阳两性，避免发生官能团的包埋、经时长侧链间发生纠缠，能够在保持分散性、流动性不降低的情况下，同时提高缓凝效果。本发明减水剂减水率高，保坍性好，合成工艺简单，能耗低，绿色环保。
Amphoteric polycarboxylate superplasticizer and preparation method thereof
The invention provides an amphoteric polycarboxylate superplasticizer and a preparation method thereof. The superplasticizer comprises an unsaturated polyether macromonomer, an acrylamide monomer containing phenylate, diacetone acrylamide, (methyl) acrylic acid, (methyl) propylene sulfonate, an initiator, a reducing agent and a chain transfer agent. The acrylamide monomer containing phenylate is obtained by carrying out amidation reaction on acryloyl chloride and aminophenyl ether, and each benzene ring in the aminophenyl ether structure is provided with at least one amino group. The superplasticizer comprises a long side chain formed by the unsaturated polyether macromonomer and a short side chain formed by other monomers, the long-chain and short-chain comb-shaped structure and functional group matched superplasticizer can give full play to the effect of functional groups to form yin-yang amphoteric property, embedding of the functional groups and entanglement between long side chains are avoided, and the retarding effect can be improved under the condition that dispersity and fluidity are not reduced. The superplasticizer is high in water reducing rate, good in slump loss resistance, simple in synthesis process, low in energy consumption, green and environmentally friendly.
本发明提供了一种两性聚羧酸减水剂及其制备方法，所述减水剂包括不饱和聚醚类大单体，含苯醚丙烯酰胺单体，双丙酮丙烯酰胺，(甲基)丙烯酸，(甲基)丙烯磺酸盐，引发剂，还原剂，链转移剂，所述含苯醚丙烯酰胺单体由丙烯酰氯和氨基苯醚经酰胺化反应得到，所述氨基苯醚结构中每个苯环上至少带有一个氨基。本发明减水剂包括不饱和聚醚类大单体形成的长侧链和其他单体形成的短侧链，这种长短链梳形结构和官能团搭配的减水剂能够充分发挥功能性官能团的作用而成阴阳两性，避免发生官能团的包埋、经时长侧链间发生纠缠，能够在保持分散性、流动性不降低的情况下，同时提高缓凝效果。本发明减水剂减水率高，保坍性好，合成工艺简单，能耗低，绿色环保。
Amphoteric polycarboxylate superplasticizer and preparation method thereof
一种两性聚羧酸减水剂及其制备方法
MA QINGHAO (Autor:in)
19.05.2020
Patent
Elektronische Ressource
Chinesisch
Amphoteric polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2021
Amphoteric mud-resistant polycarboxylate superplasticizer
| Europäisches Patentamt | 2021
AMPHOTERIC BETAINE-TYPE POLYCARBOXYLATE SUPERPLASTICIZER AND PREPARATION METHOD THEREOF
| Europäisches Patentamt | 2016
Amphoteric betaine-type polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2017
Preparation method of anti-flocculation amphoteric polycarboxylate superplasticizer
| Europäisches Patentamt | 2023