Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
High-performance gypsum slurry external additive and preparation method thereof
The invention discloses a high-performance gypsum slurry external additive and a preparation method thereof. The high-performance gypsum slurry external additive is prepared by compounding the following raw materials in percentage by weight: 320-400 parts of polyether macromonomer; 20 to 30 parts of unsaturated acid; 5 to 10 parts of a cationic monomer; 2-4 parts of an oxidant; 400 to 500 parts of deionized water; 0.5 to 2.5 parts of a reducing agent; the polyether macromonomer comprises at least one of ethylene glycol monovinyl polyoxyethylene ether and 4-hydroxybutyl vinyl polyoxyethylene ether, and the unsaturated acid comprises at least one of fumaric acid, glycidyl acrylate and itaconic acid. In the synthesis process of the water reducing agent, the dropwise adding time of the solution has great influence on the conversion rate and the performance of the product, the dropwise adding time is too short, the chemical reaction is violent, the molecular weight is too large, and the performance is reduced; in the prior art, the titration time is too slow, the production cycle is long, and the method is not economical, but the titration time of 2-3 hours is most appropriate.
本发明公开了一种高性能石膏浆体外加剂及其制备方法，由如下原料按照重量百分比复合组成：聚醚大单体320‑400份；不饱和酸20‑30份；阳离子类单体5‑10份；氧化剂2‑4份；去离子水400‑500份；还原剂0.5‑2.5份；链转移剂0.5‑1.5份，聚醚大单体包括乙二醇单乙烯基聚氧乙烯醚、4‑羟丁基乙烯基聚氧乙烯醚中的至少一种，不饱和酸包括富马酸、丙烯酸缩水甘油醚、衣康酸中的至少一种。本发明在减水剂的合成过程中，提出溶液的滴加时间对产品的转化率和性能有很大影响，滴加时间过快，化学反应剧烈，分子量过大，性能下降；滴加时间过慢，生产周期长，不经济，本发明2‑3小时的滴定时间最合适。
High-performance gypsum slurry external additive and preparation method thereof
The invention discloses a high-performance gypsum slurry external additive and a preparation method thereof. The high-performance gypsum slurry external additive is prepared by compounding the following raw materials in percentage by weight: 320-400 parts of polyether macromonomer; 20 to 30 parts of unsaturated acid; 5 to 10 parts of a cationic monomer; 2-4 parts of an oxidant; 400 to 500 parts of deionized water; 0.5 to 2.5 parts of a reducing agent; the polyether macromonomer comprises at least one of ethylene glycol monovinyl polyoxyethylene ether and 4-hydroxybutyl vinyl polyoxyethylene ether, and the unsaturated acid comprises at least one of fumaric acid, glycidyl acrylate and itaconic acid. In the synthesis process of the water reducing agent, the dropwise adding time of the solution has great influence on the conversion rate and the performance of the product, the dropwise adding time is too short, the chemical reaction is violent, the molecular weight is too large, and the performance is reduced; in the prior art, the titration time is too slow, the production cycle is long, and the method is not economical, but the titration time of 2-3 hours is most appropriate.
本发明公开了一种高性能石膏浆体外加剂及其制备方法，由如下原料按照重量百分比复合组成：聚醚大单体320‑400份；不饱和酸20‑30份；阳离子类单体5‑10份；氧化剂2‑4份；去离子水400‑500份；还原剂0.5‑2.5份；链转移剂0.5‑1.5份，聚醚大单体包括乙二醇单乙烯基聚氧乙烯醚、4‑羟丁基乙烯基聚氧乙烯醚中的至少一种，不饱和酸包括富马酸、丙烯酸缩水甘油醚、衣康酸中的至少一种。本发明在减水剂的合成过程中，提出溶液的滴加时间对产品的转化率和性能有很大影响，滴加时间过快，化学反应剧烈，分子量过大，性能下降；滴加时间过慢，生产周期长，不经济，本发明2‑3小时的滴定时间最合适。
High-performance gypsum slurry external additive and preparation method thereof
一种高性能石膏浆体外加剂及其制备方法
GUO ZHENGHUI (Autor:in) / LIN CHENGWEN (Autor:in) / ZENG LULIN (Autor:in) / HUANG QINGQUAN (Autor:in) / LIN ZHIHUI (Autor:in) / CHEN QIWU (Autor:in)
07.11.2023
Patent
Elektronische Ressource
Chinesisch
Gypsum slurry as well as preparation method and application thereof
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2024