Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylate superplasticizer as well as preparation method and application thereof
The invention provides a polycarboxylate superplasticizer as well as a preparation method and application thereof, and relates to the technical field of concrete admixtures. Specifically, the preparation method comprises the following steps: (1) sequentially carrying out hydroxylation treatment and silanization treatment on a carbon nanotube to obtain a modified carbon nanotube; (2) mixing and reacting the modified carbon nanotube, an amide compound and a catalyst to obtain a nitrogen-doped modified nanotube; (3) mixing and reacting the nitrogen-doped modified nanotube, a polyether monomer, an unsaturated carboxylic acid small monomer, a molecular weight regulator, a reducing agent and an initiator to obtain the polycarboxylic acid water reducer. The polycarboxylate superplasticizer disclosed by the invention has a relatively strong water reducing effect and dispersing capacity, can effectively improve the mechanical strength of a concrete material, and has a good application prospect.
本发明提供了一种聚羧酸减水剂及其制备方法和应用，涉及混凝土外加剂技术领域。具体而言：所述制备方法包括如下步骤：(1)将碳纳米管依次进行羟基化处理和硅烷化处理，得到改性碳纳米管；(2)将所述改性碳纳米管、酰胺类化合物和催化剂进行混合反应，得到氮掺杂改性纳米管；(3)将所述氮掺杂改性纳米管、聚醚单体、不饱和羧酸小单体、分子量调节剂、还原剂和引发剂进行混合反应，得到聚羧酸减水剂。本发明的聚羧酸减水剂具有较强的减水效果和分散能力，且能够有效提高混凝土材料的力学强度，具有良好的应用前景。
Polycarboxylate superplasticizer as well as preparation method and application thereof
The invention provides a polycarboxylate superplasticizer as well as a preparation method and application thereof, and relates to the technical field of concrete admixtures. Specifically, the preparation method comprises the following steps: (1) sequentially carrying out hydroxylation treatment and silanization treatment on a carbon nanotube to obtain a modified carbon nanotube; (2) mixing and reacting the modified carbon nanotube, an amide compound and a catalyst to obtain a nitrogen-doped modified nanotube; (3) mixing and reacting the nitrogen-doped modified nanotube, a polyether monomer, an unsaturated carboxylic acid small monomer, a molecular weight regulator, a reducing agent and an initiator to obtain the polycarboxylic acid water reducer. The polycarboxylate superplasticizer disclosed by the invention has a relatively strong water reducing effect and dispersing capacity, can effectively improve the mechanical strength of a concrete material, and has a good application prospect.
本发明提供了一种聚羧酸减水剂及其制备方法和应用，涉及混凝土外加剂技术领域。具体而言：所述制备方法包括如下步骤：(1)将碳纳米管依次进行羟基化处理和硅烷化处理，得到改性碳纳米管；(2)将所述改性碳纳米管、酰胺类化合物和催化剂进行混合反应，得到氮掺杂改性纳米管；(3)将所述氮掺杂改性纳米管、聚醚单体、不饱和羧酸小单体、分子量调节剂、还原剂和引发剂进行混合反应，得到聚羧酸减水剂。本发明的聚羧酸减水剂具有较强的减水效果和分散能力，且能够有效提高混凝土材料的力学强度，具有良好的应用前景。
Polycarboxylate superplasticizer as well as preparation method and application thereof
一种聚羧酸减水剂及其制备方法和应用
ZENG XUN (Autor:in) / LU TAO (Autor:in) / CHEN JIE (Autor:in) / FANG SHICHANG (Autor:in) / TIAN YINGBING (Autor:in)
10.10.2023
Patent
Elektronische Ressource
Chinesisch
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