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Viscosity reduction type polycarboxylate superplasticizer and preparation method thereof
The invention provides a viscosity reduction type polycarboxylate superplasticizer and a preparation method thereof, the viscosity reduction type polycarboxylate superplasticizer is prepared by the following steps: carrying out an amide/imidization reaction on polymerizable amide to obtain an unsaturated substance containing two double bonds, and then carrying out a copolymerization reaction on the unsaturated substance and an active monomer to prepare the polycarboxylate superplasticizer. The produced product has the advantages of low mixing amount, high water-reducing rate, small slump loss, substantial reduction of the slurry viscosity at a low water-binder ratio, wide application range of the silt content of the sand-gravel material, and the like. The method provided by the invention has the advantages of easily available raw material sources, simple synthesis method, low process requirements, low production cost and small environmental pollution.
本发明提供一种降粘型聚羧酸减水剂及其制备方法，所述降粘型聚羧酸减水剂是通过可聚合的酰胺发生酰胺/酰亚胺化反应得到含两个双键的不饱和物，再与活性单体共聚反应制备所述聚羧酸减水剂。生产出的产品具有掺量低、减水率高、坍落度损失小、低水胶比时显著降低浆体粘度、砂石料含泥量适应范围广等优点。采用本发明的方法具有原料来源易得，合成方法简单，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 provides a viscosity reduction type polycarboxylate superplasticizer and a preparation method thereof, the viscosity reduction type polycarboxylate superplasticizer is prepared by the following steps: carrying out an amide/imidization reaction on polymerizable amide to obtain an unsaturated substance containing two double bonds, and then carrying out a copolymerization reaction on the unsaturated substance and an active monomer to prepare the polycarboxylate superplasticizer. The produced product has the advantages of low mixing amount, high water-reducing rate, small slump loss, substantial reduction of the slurry viscosity at a low water-binder ratio, wide application range of the silt content of the sand-gravel material, and the like. The method provided by the invention has the advantages of easily available raw material sources, simple synthesis method, low process requirements, low production cost and small environmental pollution.
本发明提供一种降粘型聚羧酸减水剂及其制备方法，所述降粘型聚羧酸减水剂是通过可聚合的酰胺发生酰胺/酰亚胺化反应得到含两个双键的不饱和物，再与活性单体共聚反应制备所述聚羧酸减水剂。生产出的产品具有掺量低、减水率高、坍落度损失小、低水胶比时显著降低浆体粘度、砂石料含泥量适应范围广等优点。采用本发明的方法具有原料来源易得，合成方法简单，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
WANG XIUMEI (author) / SHU XIN (author) / RAN QIANPING (author) / HUANG ZHEN (author) / ZHANG QIANQIAN (author) / ZHAO HONGXIA (author) / YAN HAN (author) / YANG YONG (author)
2021-07-16
Patent
Electronic Resource
Chinese
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