Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Low-air-entraining delayed coagulation type polycarboxylate superplasticizer and preparation method thereof
The invention discloses a low-air-entraining delayed coagulation type polycarboxylate superplasticizer. The composition comprises the following components in parts by mass: 0.5-1.2 parts of macromonomer, 0.1-0.3 part of acrylic acid, 0.05-0.2 part of sodium methallyl sulfonate, 0.01-0.035 part of 2-(2-hydroxyethyl) methacrylate phosphate ester, 0.002-0.005 part of silane modified graphene, 0.00015-0.0002 part of ammonium persulfate, 0.0001-0.0002 part of a neutralizer and 3-6 parts of water. The low-air-entraining delayed coagulation type polycarboxylate superplasticizer has advantages of favorable dispersity, favorable plasticity retention, high water reducing rate, effective reduction of gas introduction and favorable delayed coagulation effect under the condition of lower doping amount.The silane modified graphene is added so that the bonding effect among the components is better in the reaction process, gaps among molecules after reaction are smaller and the gas content is lower.
本发明公开了一种低引气缓凝型聚羧酸减水剂，按质量份数组成分别是：大单体0.5～1.2份，丙烯酸0.1～0.3份，甲基丙烯磺酸钠0.05～0.2份，2‑羟乙基甲基丙烯酸酯磷酸酯0.01～0.035份，硅烷改性石墨烯0.002～0.005份，过硫酸铵0.00015～0.0002份，中和剂为0.0001～0.0002份，水3～6份，本低引气缓凝型聚羧酸减水剂，可以在较小的掺量下具有较好的分散性，保塑性好，减水率高，有效的减少气体引入，同时兼具更好的缓凝效果。由于加入了硅烷改性石墨烯，反应过程中，各成分之间的结合效果更好，反应后各分子相互之间的间隙更小，从而使含气量更低。
Low-air-entraining delayed coagulation type polycarboxylate superplasticizer and preparation method thereof
The invention discloses a low-air-entraining delayed coagulation type polycarboxylate superplasticizer. The composition comprises the following components in parts by mass: 0.5-1.2 parts of macromonomer, 0.1-0.3 part of acrylic acid, 0.05-0.2 part of sodium methallyl sulfonate, 0.01-0.035 part of 2-(2-hydroxyethyl) methacrylate phosphate ester, 0.002-0.005 part of silane modified graphene, 0.00015-0.0002 part of ammonium persulfate, 0.0001-0.0002 part of a neutralizer and 3-6 parts of water. The low-air-entraining delayed coagulation type polycarboxylate superplasticizer has advantages of favorable dispersity, favorable plasticity retention, high water reducing rate, effective reduction of gas introduction and favorable delayed coagulation effect under the condition of lower doping amount.The silane modified graphene is added so that the bonding effect among the components is better in the reaction process, gaps among molecules after reaction are smaller and the gas content is lower.
本发明公开了一种低引气缓凝型聚羧酸减水剂，按质量份数组成分别是：大单体0.5～1.2份，丙烯酸0.1～0.3份，甲基丙烯磺酸钠0.05～0.2份，2‑羟乙基甲基丙烯酸酯磷酸酯0.01～0.035份，硅烷改性石墨烯0.002～0.005份，过硫酸铵0.00015～0.0002份，中和剂为0.0001～0.0002份，水3～6份，本低引气缓凝型聚羧酸减水剂，可以在较小的掺量下具有较好的分散性，保塑性好，减水率高，有效的减少气体引入，同时兼具更好的缓凝效果。由于加入了硅烷改性石墨烯，反应过程中，各成分之间的结合效果更好，反应后各分子相互之间的间隙更小，从而使含气量更低。
Low-air-entraining delayed coagulation type polycarboxylate superplasticizer and preparation method thereof
一种低引气缓凝型聚羧酸减水剂及其制备方法
SUN HONGBIN (Autor:in)
24.07.2020
Patent
Elektronische Ressource
Chinesisch
Air-entraining type polycarboxylate superplasticizer and preparation method thereof
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2022
The Performance of Low Air-Entraining Polycarboxylate Superplasticizer
| British Library Conference Proceedings | 2015