Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Melamine-type water reducing agent and preparation method thereof
The invention relates to a melamine-type water reducing agent and preparation method thereof, and belongs to the technical field of chemical synthesis. The used raw material comprises the following components in parts by weight: 15-25.5 parts of melamine, 38-43 parts of 38% formaldehyde aqueous solution, 10-23 parts of sodium thiosulfate, 1-2 parts of citric acid, 5-8 parts of 40% potassium carbonate aqueous solution and 30-45 parts of water. By changing the feeding sequence, the preparation period of the process is shortened. Compared with the existing production process, the preparation method provided by the invention has the advantage that the reaction time is shortened by 4 hours or above. According to the method, the use of highly corrosive chemicals such as concentrated sulfuric acid, sodium hydroxide and the like is avoided, the safety of workers is ensured during production, and the risk of safety accidents is reduced.
本发明涉及一种三聚氰胺类减水剂及其制备方法，属于化学合成的技术领域。所使用原料包括重量份的以下组分：三聚氰胺15～25.5份，38％甲醛水溶液38～43份，硫代硫酸钠10～23份，柠檬酸1～2份，40％碳酸钾水溶液5～8份，水30～45份。本发明通过改变投料顺序，缩短了工艺的制备周期。相较于现有的生产工艺，本发明的制备方法在反应时间上缩短4小时以上。本发明避免使用了如浓硫酸、氢氧化钠等强腐蚀性化学品，在生产的同时保证了工作人员的安全，降低了安全事故发生的风险。
Melamine-type water reducing agent and preparation method thereof
The invention relates to a melamine-type water reducing agent and preparation method thereof, and belongs to the technical field of chemical synthesis. The used raw material comprises the following components in parts by weight: 15-25.5 parts of melamine, 38-43 parts of 38% formaldehyde aqueous solution, 10-23 parts of sodium thiosulfate, 1-2 parts of citric acid, 5-8 parts of 40% potassium carbonate aqueous solution and 30-45 parts of water. By changing the feeding sequence, the preparation period of the process is shortened. Compared with the existing production process, the preparation method provided by the invention has the advantage that the reaction time is shortened by 4 hours or above. According to the method, the use of highly corrosive chemicals such as concentrated sulfuric acid, sodium hydroxide and the like is avoided, the safety of workers is ensured during production, and the risk of safety accidents is reduced.
本发明涉及一种三聚氰胺类减水剂及其制备方法，属于化学合成的技术领域。所使用原料包括重量份的以下组分：三聚氰胺15～25.5份，38％甲醛水溶液38～43份，硫代硫酸钠10～23份，柠檬酸1～2份，40％碳酸钾水溶液5～8份，水30～45份。本发明通过改变投料顺序，缩短了工艺的制备周期。相较于现有的生产工艺，本发明的制备方法在反应时间上缩短4小时以上。本发明避免使用了如浓硫酸、氢氧化钠等强腐蚀性化学品，在生产的同时保证了工作人员的安全，降低了安全事故发生的风险。
Melamine-type water reducing agent and preparation method thereof
一种三聚氰胺类减水剂及其制备方法
ZHOU CHANGPENG (Autor:in) / ZHANG FEN (Autor:in)
24.11.2020
Patent
Elektronische Ressource
Chinesisch
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