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 discloses a polycarboxylate superplasticizer and a preparation method thereof. The polycarboxylate superplasticizer disclosed by the invention is synthesized by reacting ethylene glycol monovinyl polyglycol ether, modified acrylic microspheres, hydrogen peroxide, sodium hypophosphite and modified reducing agent microspheres; the modified acrylic acid microsphere is prepared by taking a porous inner core sphere as a carrier, taking acrylic acid as a main adsorption substance in the carrier and taking PNIPAM as a carrier outer layer, the modified reducing agent microsphere is prepared by taking a porous inner core sphere as a carrier, taking a reducing agent as a main adsorption substance in the carrier and taking PNIPAM as a carrier outer layer. According to the preparation method, the modified acrylic acid microspheres and the modified reducing agent microspheres are prepared, the polycarboxylate superplasticizer is added at the same time in the compounding process, the sustained release effect of the microspheres in the modification process and control of PNIPAM on a sustained release channel are utilized, and stable and continuous release of acrylic acid and a reducing agent is achieved; the water reducing agent with stable and excellent performance is prepared from acrylic acid and EPEG under proper synthesis conditions.
本发明公开了一种聚羧酸减水剂及其制备方法。本发明所述聚羧酸减水剂由乙二醇单乙烯基聚乙二醇醚、改性丙烯酸微球、双氧水、次亚磷酸钠及改性还原剂微球反应合成；所述改性丙烯酸微球以多孔内核球为载体，以丙烯酸为载体内主要吸附物质，以PNIPAM为载体外层制成；所述改性还原剂微球以多孔内核球为载体，以还原剂为载体内主要吸附物质，以PNIPAM为载体外层制成。本发明通过改性丙烯酸微球和改性还原剂微球制备，实现聚羧酸减水剂复配过程中的同时加入，利用改性过程中微球的缓释效应以及PNIPAM对缓释通道的控制，实现了丙烯酸和还原剂的稳定持续释放，实现了丙烯酸与EPEG处于适宜的合成条件下制备出性能稳定优异的减水剂。
Polycarboxylate superplasticizer and preparation method thereof
The invention discloses a polycarboxylate superplasticizer and a preparation method thereof. The polycarboxylate superplasticizer disclosed by the invention is synthesized by reacting ethylene glycol monovinyl polyglycol ether, modified acrylic microspheres, hydrogen peroxide, sodium hypophosphite and modified reducing agent microspheres; the modified acrylic acid microsphere is prepared by taking a porous inner core sphere as a carrier, taking acrylic acid as a main adsorption substance in the carrier and taking PNIPAM as a carrier outer layer, the modified reducing agent microsphere is prepared by taking a porous inner core sphere as a carrier, taking a reducing agent as a main adsorption substance in the carrier and taking PNIPAM as a carrier outer layer. According to the preparation method, the modified acrylic acid microspheres and the modified reducing agent microspheres are prepared, the polycarboxylate superplasticizer is added at the same time in the compounding process, the sustained release effect of the microspheres in the modification process and control of PNIPAM on a sustained release channel are utilized, and stable and continuous release of acrylic acid and a reducing agent is achieved; the water reducing agent with stable and excellent performance is prepared from acrylic acid and EPEG under proper synthesis conditions.
本发明公开了一种聚羧酸减水剂及其制备方法。本发明所述聚羧酸减水剂由乙二醇单乙烯基聚乙二醇醚、改性丙烯酸微球、双氧水、次亚磷酸钠及改性还原剂微球反应合成；所述改性丙烯酸微球以多孔内核球为载体，以丙烯酸为载体内主要吸附物质，以PNIPAM为载体外层制成；所述改性还原剂微球以多孔内核球为载体，以还原剂为载体内主要吸附物质，以PNIPAM为载体外层制成。本发明通过改性丙烯酸微球和改性还原剂微球制备，实现聚羧酸减水剂复配过程中的同时加入，利用改性过程中微球的缓释效应以及PNIPAM对缓释通道的控制，实现了丙烯酸和还原剂的稳定持续释放，实现了丙烯酸与EPEG处于适宜的合成条件下制备出性能稳定优异的减水剂。
Polycarboxylate superplasticizer and preparation method thereof
一种聚羧酸减水剂及其制备方法
SUN HAO (Autor:in) / LI LIANG (Autor:in) / YAN JIAJIANG (Autor:in) / LIANG JINPENG (Autor:in) / WANG RENXIAO (Autor:in) / LU HAO (Autor:in) / LIU WANGANG (Autor:in) / YU LINYU (Autor:in)
27.12.2024
Patent
Elektronische Ressource
Chinesisch
| Europäisches Patentamt | 2023
Polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2024
Polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2020
Polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2024