A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method for preparing liquid alkali-free accelerator through ring opening of cyclic amide monomer
The invention relates to a method for preparing a liquid alkali-free accelerator by ring opening of a cyclic amide monomer, which comprises the following steps of: performing ring opening polymerization, performing amidation reaction to synthesize a comb-shaped organic complexing agent, and compounding multiple components to prepare the liquid alkali-free accelerator, namely performing ring opening polymerization on the cyclic amide monomer to prepare a polymer main chain; then carrying out amidation reaction with small molecule polypeptide to obtain a comb-shaped organic complexing agent, and compounding the comb-shaped organic complexing agent with aluminum sulfate, montmorillonite powder, alcohol amine and the like to obtain the liquid alkali-free accelerator. According to the method, the self-made comb-shaped organic complexing agent is adopted and can be widely applied to preparation of the liquid alkali-free accelerator, the stability of the accelerator is greatly improved, the problems of precipitation and layering of the accelerator and the like are well solved, the self-made comb-shaped organic complexing agent is applied to a cement-based material, the setting rate of the cement-based material can be effectively increased, and the early strength is improved; compared with the conventional liquid alkali-free setting accelerator, the liquid alkali-free setting accelerator has the advantages of high later strength retention rate, no shrinkage, better action effect and application adaptability, and wide market prospect.
本发明涉及环酰胺单体开环制备液体无碱速凝剂的方法，通过先开环聚合再酰胺化反应合成梳状有机络合剂而后复合多组分的方法制备一种液体无碱速凝剂，即环酰胺单体开环聚合制备多聚体主链，然后与小分子多肽发生酰胺化反应得到梳状有机络合剂，再与硫酸铝、蒙脱石散、醇胺等复合得到液体无碱速凝剂。本发明方法采用自制梳状有机络合剂，可广泛应用于液体无碱速凝剂的制备中，大幅提升速凝剂的稳定性，很好地解决了速凝剂沉淀分层等问题，并且应用于水泥基材料中，可有效加快水泥基材料的凝结速率，提高早期强度，后期强度保留率高、不倒缩，表现出比常规液体无碱速凝剂更为优异的作用效果和应用适应性，市场前景广阔。
Method for preparing liquid alkali-free accelerator through ring opening of cyclic amide monomer
The invention relates to a method for preparing a liquid alkali-free accelerator by ring opening of a cyclic amide monomer, which comprises the following steps of: performing ring opening polymerization, performing amidation reaction to synthesize a comb-shaped organic complexing agent, and compounding multiple components to prepare the liquid alkali-free accelerator, namely performing ring opening polymerization on the cyclic amide monomer to prepare a polymer main chain; then carrying out amidation reaction with small molecule polypeptide to obtain a comb-shaped organic complexing agent, and compounding the comb-shaped organic complexing agent with aluminum sulfate, montmorillonite powder, alcohol amine and the like to obtain the liquid alkali-free accelerator. According to the method, the self-made comb-shaped organic complexing agent is adopted and can be widely applied to preparation of the liquid alkali-free accelerator, the stability of the accelerator is greatly improved, the problems of precipitation and layering of the accelerator and the like are well solved, the self-made comb-shaped organic complexing agent is applied to a cement-based material, the setting rate of the cement-based material can be effectively increased, and the early strength is improved; compared with the conventional liquid alkali-free setting accelerator, the liquid alkali-free setting accelerator has the advantages of high later strength retention rate, no shrinkage, better action effect and application adaptability, and wide market prospect.
本发明涉及环酰胺单体开环制备液体无碱速凝剂的方法，通过先开环聚合再酰胺化反应合成梳状有机络合剂而后复合多组分的方法制备一种液体无碱速凝剂，即环酰胺单体开环聚合制备多聚体主链，然后与小分子多肽发生酰胺化反应得到梳状有机络合剂，再与硫酸铝、蒙脱石散、醇胺等复合得到液体无碱速凝剂。本发明方法采用自制梳状有机络合剂，可广泛应用于液体无碱速凝剂的制备中，大幅提升速凝剂的稳定性，很好地解决了速凝剂沉淀分层等问题，并且应用于水泥基材料中，可有效加快水泥基材料的凝结速率，提高早期强度，后期强度保留率高、不倒缩，表现出比常规液体无碱速凝剂更为优异的作用效果和应用适应性，市场前景广阔。
Method for preparing liquid alkali-free accelerator through ring opening of cyclic amide monomer
环酰胺单体开环制备液体无碱速凝剂的方法
LIU XIAO (author) / XIE HUI (author) / ZHANG YUNING (author) / YANG WEIGANG (author) / YANG JIAN (author) / WANG ZIMING (author) / LUO QIFENG (author) / ZHAO YILIN (author) / ZHENG XU (author)
2022-05-06
Patent
Electronic Resource
Chinese
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