Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Polycarboxylate superplasticizer and preparation method thereof
The invention belongs to concrete admixtures, and particularly relates to a polycarboxylate superplasticizer and a preparation method thereof. The preparation method comprises two main steps. The preparation method comprises the following steps: firstly, preparing modified low-molecular-weight polyether A through transesterification, and secondly, carrying out copolymerization on the obtained polyether A, an allyl polyether macromonomer, an oxidizing agent, a reducing agent and a chain transfer agent to obtain the polycarboxylate superplasticizer. According to the preparation method, the dispersing performance of the water reducing agent is realized by using specific monomers and reaction conditions, the finally obtained water reducing agent can be widely applied to preparation of various types of concrete, the working efficiency is improved, and the performance of the concrete is improved.
本发明属于混凝土外加剂，具体涉及一种聚羧酸减水剂及其制备方法。本发明的制备方法包括两个主要步骤。首先是通过酯交换反应制备改性低分子量聚醚A，其次是将得到的聚醚A与烯丙基聚醚大单体、氧化剂、还原剂、链转移剂进行共聚反应，得到聚羧酸减水剂。该制备方法使用特定的单体和反应条件，以实现减水剂的分散性能，最终得到的减水剂可广泛应用于各种混凝土制备中，提高工作效率并改善混凝土的性能。
Polycarboxylate superplasticizer and preparation method thereof
The invention belongs to concrete admixtures, and particularly relates to a polycarboxylate superplasticizer and a preparation method thereof. The preparation method comprises two main steps. The preparation method comprises the following steps: firstly, preparing modified low-molecular-weight polyether A through transesterification, and secondly, carrying out copolymerization on the obtained polyether A, an allyl polyether macromonomer, an oxidizing agent, a reducing agent and a chain transfer agent to obtain the polycarboxylate superplasticizer. According to the preparation method, the dispersing performance of the water reducing agent is realized by using specific monomers and reaction conditions, the finally obtained water reducing agent can be widely applied to preparation of various types of concrete, the working efficiency is improved, and the performance of the concrete is improved.
本发明属于混凝土外加剂，具体涉及一种聚羧酸减水剂及其制备方法。本发明的制备方法包括两个主要步骤。首先是通过酯交换反应制备改性低分子量聚醚A，其次是将得到的聚醚A与烯丙基聚醚大单体、氧化剂、还原剂、链转移剂进行共聚反应，得到聚羧酸减水剂。该制备方法使用特定的单体和反应条件，以实现减水剂的分散性能，最终得到的减水剂可广泛应用于各种混凝土制备中，提高工作效率并改善混凝土的性能。
Polycarboxylate superplasticizer and preparation method thereof
一种聚羧酸减水剂及其制备方法
FANG YUNHUI (Autor:in) / LIN YANMEI (Autor:in) / CHEN ZHANHUA (Autor:in) / SHEN QIANG (Autor:in) / ZHANG XIAOFANG (Autor:in) / LIN ZHIJUN (Autor:in) / GUO YUANQIANG (Autor:in) / LIN TIANXING (Autor:in) / ZHU QIAOYONG (Autor:in) / YU FEIYU (Autor:in)
15.03.2024
Patent
Elektronische Ressource
Chinesisch
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