A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Concrete slump retaining agent and preparation method thereof
The present invention relates to the technical field of building additives, particularly to a concrete slump retaining agent and a preparation method thereof. The slump retaining agent comprises: a photopolymerizable monomer and a photoinitiator; the photopolymerizable monomer at least comprises one of a polyether monomer, an alkene monomer and an ester monomer; and the photoinitiator is benzoin. By adopting the concrete slump retaining agent and the preparation method thereof provided by the invention, the reaction can be carried out at normal temperature or low temperature, the monomer prepolymerization is directly initiated through light irradiation, the polymerization rate is greatly improved, the synthesis conversion rate is improved, meanwhile, sulfonic acid groups can stably adsorb the surfaces of cement particles, and the hydration reaction can be effectively delayed; and the dispersing and slump retaining effects in the concrete with medium and low strength grades are enhanced, and the concrete has an extremely wide market application prospect.
本发明涉及建筑外加剂技术领域，特别涉及一种混凝土保坍剂及其制备方法，其中，所述保坍剂包含：可光聚合单体，所述可光聚合单体至少包括聚醚单体、烯类单体、酯类单体中的一种；光引发剂，所述光引发剂为二苯乙醇酮。采用本发明提供的混凝土保坍剂及其制备方法，使得反应可在常温或低温下进行，通过光照射直接引发单体预聚合，大幅提高聚合速率，提高合成转化率，同时，磺酸基团能稳定吸附胶水泥颗粒表面，可有效延缓水化反应，增强中低强度等级的混凝土中的分散保坍效果，具有极为广泛的市场应用前景。
Concrete slump retaining agent and preparation method thereof
The present invention relates to the technical field of building additives, particularly to a concrete slump retaining agent and a preparation method thereof. The slump retaining agent comprises: a photopolymerizable monomer and a photoinitiator; the photopolymerizable monomer at least comprises one of a polyether monomer, an alkene monomer and an ester monomer; and the photoinitiator is benzoin. By adopting the concrete slump retaining agent and the preparation method thereof provided by the invention, the reaction can be carried out at normal temperature or low temperature, the monomer prepolymerization is directly initiated through light irradiation, the polymerization rate is greatly improved, the synthesis conversion rate is improved, meanwhile, sulfonic acid groups can stably adsorb the surfaces of cement particles, and the hydration reaction can be effectively delayed; and the dispersing and slump retaining effects in the concrete with medium and low strength grades are enhanced, and the concrete has an extremely wide market application prospect.
本发明涉及建筑外加剂技术领域，特别涉及一种混凝土保坍剂及其制备方法，其中，所述保坍剂包含：可光聚合单体，所述可光聚合单体至少包括聚醚单体、烯类单体、酯类单体中的一种；光引发剂，所述光引发剂为二苯乙醇酮。采用本发明提供的混凝土保坍剂及其制备方法，使得反应可在常温或低温下进行，通过光照射直接引发单体预聚合，大幅提高聚合速率，提高合成转化率，同时，磺酸基团能稳定吸附胶水泥颗粒表面，可有效延缓水化反应，增强中低强度等级的混凝土中的分散保坍效果，具有极为广泛的市场应用前景。
Concrete slump retaining agent and preparation method thereof
一种混凝土保坍剂及其制备方法
LI WEI (author) / ZHANG SHENGBIAO (author) / HUANG XIAOWEN (author) / MENG XIANGJIE (author)
2021-04-27
Patent
Electronic Resource
Chinese
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