Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylate superplasticizer with clay tolerance and preparation method thereof
The invention belongs to the technical field of polycarboxylate superplasticizers, and provides a clay-tolerant polycarboxylate superplasticizer and a preparation method thereof, the clay-tolerant polycarboxylate superplasticizer is prepared from the following raw materials by mass: 300-1000 parts of a macromonomer, 500-1000 parts of water, 25-75 parts of unsaturated acid, 1.2-3 parts of a chain transfer agent, 1.8-2.2 parts of a reducing agent, 0.25-6 parts of an oxidizing agent, 5-55 parts of a terminated fatty alcohol-polyoxyethylene ether functional monomer, and 5-10 parts of a neutralizer. According to the invention, fatty alcohol-polyoxyethylene ether has the characteristic of long rigid alkyl chain, and is modified and introduced into the structure of the polycarboxylate superplasticizer, so that the steric hindrance of the polycarboxylate superplasticizer can be increased, the polycarboxylate superplasticizer has good mud resistance, the sensitivity of the polycarboxylate superplasticizer to mud in sand can be reduced, and the stability of the polycarboxylate superplasticizer is improved. And the method has practical significance for widening the application range of the polycarboxylate superplasticizer.
本发明属于聚羧酸减水剂技术领域，提供了一种具有黏土耐受性聚羧酸减水剂及其制备方法，由包含如下质量份数的原料制备得到：大单体300～1000份、水500～1000份、不饱和酸25～75份、链转移剂1.2～3份、还原剂1.8～2.2份、氧化剂0.25～6份、封端脂肪醇聚氧乙烯醚功能单体5～55份、中和剂5～10份。本发明利用脂肪醇聚氧乙烯醚具有长刚性烷基链的特点，将其进行改性后引入到聚羧酸减水剂结构中，能增大聚羧酸减水剂的空间位阻，使聚羧酸减水剂具有良好的抗泥性能，能降低聚羧酸减水剂对砂石含泥敏感性，对拓宽聚羧酸减水剂的应用范围具有现实意义。
Polycarboxylate superplasticizer with clay tolerance and preparation method thereof
The invention belongs to the technical field of polycarboxylate superplasticizers, and provides a clay-tolerant polycarboxylate superplasticizer and a preparation method thereof, the clay-tolerant polycarboxylate superplasticizer is prepared from the following raw materials by mass: 300-1000 parts of a macromonomer, 500-1000 parts of water, 25-75 parts of unsaturated acid, 1.2-3 parts of a chain transfer agent, 1.8-2.2 parts of a reducing agent, 0.25-6 parts of an oxidizing agent, 5-55 parts of a terminated fatty alcohol-polyoxyethylene ether functional monomer, and 5-10 parts of a neutralizer. According to the invention, fatty alcohol-polyoxyethylene ether has the characteristic of long rigid alkyl chain, and is modified and introduced into the structure of the polycarboxylate superplasticizer, so that the steric hindrance of the polycarboxylate superplasticizer can be increased, the polycarboxylate superplasticizer has good mud resistance, the sensitivity of the polycarboxylate superplasticizer to mud in sand can be reduced, and the stability of the polycarboxylate superplasticizer is improved. And the method has practical significance for widening the application range of the polycarboxylate superplasticizer.
本发明属于聚羧酸减水剂技术领域，提供了一种具有黏土耐受性聚羧酸减水剂及其制备方法，由包含如下质量份数的原料制备得到：大单体300～1000份、水500～1000份、不饱和酸25～75份、链转移剂1.2～3份、还原剂1.8～2.2份、氧化剂0.25～6份、封端脂肪醇聚氧乙烯醚功能单体5～55份、中和剂5～10份。本发明利用脂肪醇聚氧乙烯醚具有长刚性烷基链的特点，将其进行改性后引入到聚羧酸减水剂结构中，能增大聚羧酸减水剂的空间位阻，使聚羧酸减水剂具有良好的抗泥性能，能降低聚羧酸减水剂对砂石含泥敏感性，对拓宽聚羧酸减水剂的应用范围具有现实意义。
Polycarboxylate superplasticizer with clay tolerance and preparation method thereof
一种具有黏土耐受性聚羧酸减水剂及其制备方法
XUE BOWEN (Autor:in) / LIU GUANJIE (Autor:in) / ZHOU JINGJIE (Autor:in) / SUN JINYUAN (Autor:in) / LIANG HUIBIN (Autor:in) / LIU YUQI (Autor:in) / ZHANG KE (Autor:in) / WANG CHUNYU (Autor:in)
12.12.2023
Patent
Elektronische Ressource
Chinesisch
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