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A platform for research: civil engineering, architecture and urbanism
Efficient dispersing type polycarboxylate superplasticizer and preparation method thereof
The invention belongs to concrete admixtures, and particularly relates to an efficient dispersing type polycarboxylate superplasticizer and a preparation method thereof. The preparation method comprises the following two main steps: firstly, preparing multi-adsorption-group-terminated low-molecular-weight polyether A through transesterification, and secondly, carrying out copolymerization on the obtained polyether A, a vinyl polyether macromonomer, an oxidizing agent, a reducing agent and a chain transfer agent to obtain the high-efficiency dispersing type polycarboxylic acid water reducing agent. According to the preparation method, specific monomers and reaction conditions are used to realize high-efficiency dispersion performance of the water reducing agent, 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，具体涉及一种高效分散型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多吸附基团封端的低分子量聚醚A，其次是将得到的聚醚A与乙烯基聚醚大单体、氧化剂、还原剂、链转移剂进行共聚反应，得到高效分散型聚羧酸减水剂。该制备方法使用特定的单体和反应条件，以实现减水剂的高效分散性能，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。
Efficient dispersing type polycarboxylate superplasticizer and preparation method thereof
The invention belongs to concrete admixtures, and particularly relates to an efficient dispersing type polycarboxylate superplasticizer and a preparation method thereof. The preparation method comprises the following two main steps: firstly, preparing multi-adsorption-group-terminated low-molecular-weight polyether A through transesterification, and secondly, carrying out copolymerization on the obtained polyether A, a vinyl polyether macromonomer, an oxidizing agent, a reducing agent and a chain transfer agent to obtain the high-efficiency dispersing type polycarboxylic acid water reducing agent. According to the preparation method, specific monomers and reaction conditions are used to realize high-efficiency dispersion performance of the water reducing agent, 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，具体涉及一种高效分散型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多吸附基团封端的低分子量聚醚A，其次是将得到的聚醚A与乙烯基聚醚大单体、氧化剂、还原剂、链转移剂进行共聚反应，得到高效分散型聚羧酸减水剂。该制备方法使用特定的单体和反应条件，以实现减水剂的高效分散性能，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。
Efficient dispersing type polycarboxylate superplasticizer and preparation method thereof
一种高效分散型聚羧酸减水剂及其制备方法
LIN YANMEI (author) / FANG YUNHUI (author) / SHEN QIANG (author) / CHEN ZHANHUA (author) / GUO YUANQIANG (author) / ZHANG XIAOFANG (author) / LIN ZHIJUN (author) / LIN TIANXING (author) / ZHU QIAOYONG (author) / YU FEIYU (author)
2024-03-15
Patent
Electronic Resource
Chinese
Dispersing type polycarboxylate superplasticizer and preparation method thereof
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