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Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
The invention discloses a viscosity reduction type polycarboxylate superplasticizer and a preparation method thereof. The viscosity reduction type polycarboxylate superplasticizer is obtained by carrying out an amide/imidization reaction on a compound A and a compound B to obtain an intermediate C, and then carrying out a copolymerization reaction on the intermediate C, a monomer D, a monomer E and a monomer F, the compound A is amino polyether, and the compound B is sulfydryl-containing carboxylic acid; the monomer D is unsaturated carboxylic acid, the monomer E is a polymerizable sulfonic acid group monomer, and the monomer F is a polymerizable phosphonic acid group monomer. The viscosity reduction type polycarboxylate superplasticizer product prepared by the invention has the advantages of low mixing amount, high water-reducing rate, small slump loss and the like, and particularly, the viscosity of slurry is obviously reduced when the water-binder ratio is low. The method provided by the invention has the advantages of simple synthesis method, high yield, low process requirement, low production cost and small environmental pollution.
本发明公开了一种降粘型聚羧酸减水剂及其制备方法。本发明所述降粘型聚羧酸减水剂由通过化合物A与化合物B发生酰胺/酰亚胺化反应得到的中间体C，中间体C再与单体D、单体E、单体F共聚反应得到；所述化合物A为氨基聚醚，所述化合物B为含巯基的羧酸；所述单体D为不饱和羧酸，所述单体E为可聚合磺酸基单体，所述单体F为可聚合膦酸基单体。本发明制备的降粘型聚羧酸减水剂产品具有掺量低、减水率高、坍落度损失小、尤其是低水胶比时显著降低浆体粘度等优点。采用本发明的方法具有合成方法简单，收率高，工艺要求低，生产成本小，环境污染小的优点。
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
The invention discloses a viscosity reduction type polycarboxylate superplasticizer and a preparation method thereof. The viscosity reduction type polycarboxylate superplasticizer is obtained by carrying out an amide/imidization reaction on a compound A and a compound B to obtain an intermediate C, and then carrying out a copolymerization reaction on the intermediate C, a monomer D, a monomer E and a monomer F, the compound A is amino polyether, and the compound B is sulfydryl-containing carboxylic acid; the monomer D is unsaturated carboxylic acid, the monomer E is a polymerizable sulfonic acid group monomer, and the monomer F is a polymerizable phosphonic acid group monomer. The viscosity reduction type polycarboxylate superplasticizer product prepared by the invention has the advantages of low mixing amount, high water-reducing rate, small slump loss and the like, and particularly, the viscosity of slurry is obviously reduced when the water-binder ratio is low. The method provided by the invention has the advantages of simple synthesis method, high yield, low process requirement, low production cost and small environmental pollution.
本发明公开了一种降粘型聚羧酸减水剂及其制备方法。本发明所述降粘型聚羧酸减水剂由通过化合物A与化合物B发生酰胺/酰亚胺化反应得到的中间体C，中间体C再与单体D、单体E、单体F共聚反应得到；所述化合物A为氨基聚醚，所述化合物B为含巯基的羧酸；所述单体D为不饱和羧酸，所述单体E为可聚合磺酸基单体，所述单体F为可聚合膦酸基单体。本发明制备的降粘型聚羧酸减水剂产品具有掺量低、减水率高、坍落度损失小、尤其是低水胶比时显著降低浆体粘度等优点。采用本发明的方法具有合成方法简单，收率高，工艺要求低，生产成本小，环境污染小的优点。
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
一种降粘型聚羧酸减水剂及其制备方法
YANG YONG (author) / WANG XIUMEI (author) / SHU XIN (author) / ZHOU DONGLIANG (author) / YAN HAN (author) / LI SHENZHEN (author) / HU CONG (author)
2023-06-20
Patent
Electronic Resource
Chinese
Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
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