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A platform for research: civil engineering, architecture and urbanism
Defoaming type polycarboxylate superplasticizer for cement concrete and preparation method of defoaming type polycarboxylate superplasticizer
The invention relates to the technical field of concrete admixtures, in particular to a defoaming type polycarboxylate superplasticizer for cement concrete and a preparation method of the defoaming polycarboxylate superplasticizer. The defoaming polycarboxylate superplasticizer for cement concrete is prepared from a first polymer and hydrogen-containing silicone oil through a hydrosilylation reaction, and the first polymer is prepared from polyacrylic acid and a polyether macromonomer through esterification reaction. The defoaming polycarboxylate superplasticizer for cement concrete provided by the invention has the functions of defoaming and foam inhibition while having a high water reducing effect, is strong in defoaming capability and high in stability, and effectively overcomes the problem of poor gas content control effect caused by poor compatibility and poor placement stability due to compounding of the polycarboxylate superplasticizer and a defoaming agent.
本发明涉及混凝土外加剂技术领域，特别涉及一种水泥混凝土用消泡型聚羧酸减水剂及其制备方法。所述水泥混凝土用消泡型聚羧酸减水剂由第一聚合物和含氢硅油经硅氢化反应制得；所述第一聚合物由聚丙烯酸、聚醚大单体经酯化反应制得。本发明提供的水泥混凝土用消泡型聚羧酸减水剂在具有高减水效果的同时，还具有消泡和抑泡的功能，其消泡能力强、稳定性好，有效避免了聚羧酸减水剂与消泡剂二者复配带来的相容性差、放置稳定性差导致控制含气量效果不佳的问题。
Defoaming type polycarboxylate superplasticizer for cement concrete and preparation method of defoaming type polycarboxylate superplasticizer
The invention relates to the technical field of concrete admixtures, in particular to a defoaming type polycarboxylate superplasticizer for cement concrete and a preparation method of the defoaming polycarboxylate superplasticizer. The defoaming polycarboxylate superplasticizer for cement concrete is prepared from a first polymer and hydrogen-containing silicone oil through a hydrosilylation reaction, and the first polymer is prepared from polyacrylic acid and a polyether macromonomer through esterification reaction. The defoaming polycarboxylate superplasticizer for cement concrete provided by the invention has the functions of defoaming and foam inhibition while having a high water reducing effect, is strong in defoaming capability and high in stability, and effectively overcomes the problem of poor gas content control effect caused by poor compatibility and poor placement stability due to compounding of the polycarboxylate superplasticizer and a defoaming agent.
本发明涉及混凝土外加剂技术领域，特别涉及一种水泥混凝土用消泡型聚羧酸减水剂及其制备方法。所述水泥混凝土用消泡型聚羧酸减水剂由第一聚合物和含氢硅油经硅氢化反应制得；所述第一聚合物由聚丙烯酸、聚醚大单体经酯化反应制得。本发明提供的水泥混凝土用消泡型聚羧酸减水剂在具有高减水效果的同时，还具有消泡和抑泡的功能，其消泡能力强、稳定性好，有效避免了聚羧酸减水剂与消泡剂二者复配带来的相容性差、放置稳定性差导致控制含气量效果不佳的问题。
Defoaming type polycarboxylate superplasticizer for cement concrete and preparation method of defoaming type polycarboxylate superplasticizer
一种水泥混凝土用消泡型聚羧酸减水剂及其制备方法
SHAO YOUZHE (author) / WU CHUANDENG (author) / LI GELI (author) / FANG YUNHUI (author) / ZHONG LINA (author)
2021-06-04
Patent
Electronic Resource
Chinese
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