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Slow-release polycarboxylate superplasticizer and preparation method thereof
The invention discloses a slow-release polycarboxylate superplasticizer and a preparation method thereof.The slow-release polycarboxylate superplasticizer is prepared from, by weight, 200-375 parts of modified starch solution, 100-180 parts of polyether macromonomer, 57-70 parts of first mixture and 39-44 parts of second mixture, the first mixture comprises unsaturated ester small monomer and unsaturated acid small monomer, the second mixture comprises unsaturated ester small monomer and unsaturated acid small monomer, and the third mixture comprises unsaturated ester small monomer and unsaturated acid small monomer. The second mixture includes a reducing agent and a chain transfer agent. The slow-release polycarboxylate superplasticizer has the characteristics of high slump loss resistance and good material adaptability. The main raw material of the slow-release polycarboxylate superplasticizer is the modified starch solution, the modified starch solution is obtained by modifying starch, the starch is renewable, wide in source and low in price, and does not depend on petroleum as a raw material, so that the use amount of the petroleum is greatly reduced.
本发明公开一种缓释型聚羧酸减水剂及其制备方法，其中，一种缓释型聚羧酸减水剂，按重量份数计，包括改性淀粉溶液200份～375份、聚醚大单体100份～180份、第一混合物57份～70份和第二混合物39份～44份，其中，第一混合物包括不饱和酯类小单体和不饱和酸类小单体，第二混合物包括还原剂和链转移剂。该缓释型聚羧酸减水剂具有高保坍、材料适应性好的特性。该缓释型聚羧酸减水剂主要的原材料是改性淀粉溶液，改性淀粉溶液是通过淀粉改性得到的，淀粉是可再生的，来源广泛且价格低廉，不用再依赖石油为原料，大幅度的减少石油的用量。
Slow-release polycarboxylate superplasticizer and preparation method thereof
The invention discloses a slow-release polycarboxylate superplasticizer and a preparation method thereof.The slow-release polycarboxylate superplasticizer is prepared from, by weight, 200-375 parts of modified starch solution, 100-180 parts of polyether macromonomer, 57-70 parts of first mixture and 39-44 parts of second mixture, the first mixture comprises unsaturated ester small monomer and unsaturated acid small monomer, the second mixture comprises unsaturated ester small monomer and unsaturated acid small monomer, and the third mixture comprises unsaturated ester small monomer and unsaturated acid small monomer. The second mixture includes a reducing agent and a chain transfer agent. The slow-release polycarboxylate superplasticizer has the characteristics of high slump loss resistance and good material adaptability. The main raw material of the slow-release polycarboxylate superplasticizer is the modified starch solution, the modified starch solution is obtained by modifying starch, the starch is renewable, wide in source and low in price, and does not depend on petroleum as a raw material, so that the use amount of the petroleum is greatly reduced.
本发明公开一种缓释型聚羧酸减水剂及其制备方法，其中，一种缓释型聚羧酸减水剂，按重量份数计，包括改性淀粉溶液200份～375份、聚醚大单体100份～180份、第一混合物57份～70份和第二混合物39份～44份，其中，第一混合物包括不饱和酯类小单体和不饱和酸类小单体，第二混合物包括还原剂和链转移剂。该缓释型聚羧酸减水剂具有高保坍、材料适应性好的特性。该缓释型聚羧酸减水剂主要的原材料是改性淀粉溶液，改性淀粉溶液是通过淀粉改性得到的，淀粉是可再生的，来源广泛且价格低廉，不用再依赖石油为原料，大幅度的减少石油的用量。
Slow-release polycarboxylate superplasticizer and preparation method thereof
一种缓释型聚羧酸减水剂及其制备方法
FANG YUNHUI (author) / LIN ZHIQUN (author) / LI GELI (author) / MENG XIANGJIE (author) / RAO BANGLI (author)
2022-03-01
Patent
Electronic Resource
Chinese
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