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Preparation method of efficient and stable gypsum retarder
The invention discloses a preparation method of an efficient and stable gypsum retarder, the gypsum retarder is obtained by a synthetic reaction of benzene-containing anhydride and an amine substance under the action of a basic catalyst, the retarder obtained by the preparation method is used for a gypsum product, the setting time of gypsum can be effectively prolonged, and compared with other types of gypsum retarders, the gypsum retarder has remarkable low-doping and high-efficiency performance, the retarding time is stable, continuous and controllable to adjust, the retarder has a remarkable low-doping-amount effect, the curve of the retarding time rising along with the increase of the doping amount is stable and continuous, and the problems that most of retarders are low in doping and low in efficiency and easy to be excessive in high doping at present are perfectly solved; and the synthetic process is an organic synthesis process carried out at high temperature and high pressure under the protection of inert gas, so that the stability and adaptability of the gypsum retarder under different conditions are greatly improved, and the synthetic process can be widely applied to the adjustment of the setting time of different gypsum or different gypsum products.
本发明公开一种高效稳定石膏缓凝剂的制备方法，石膏缓凝剂由含苯的酸酐与胺类物质在碱性催化剂作用下合成反应所得，将所述制备方法得到的缓凝剂用于石膏制品，可有效延长石膏的凝结时间，相对其他类型石膏缓凝剂，本发明石膏缓凝剂具有显著的“低掺高效”性能，缓凝时间调节稳定连续可控，该缓凝剂在低掺量效果显著，缓凝时间随掺量提高上升曲线稳定连续，完美解决目前大多数缓凝剂“低掺低效，高掺易过量”这一问题，为建筑石膏凝结时间的调节带来很大便利，此合成工艺在高温高压以及惰性气体保护下进行的有机合成工艺，大大提高了石膏缓凝剂在不同条件下的稳定性与适应性，可广泛应用于不同石膏或者不同石膏产品中凝结时间的调节。
Preparation method of efficient and stable gypsum retarder
The invention discloses a preparation method of an efficient and stable gypsum retarder, the gypsum retarder is obtained by a synthetic reaction of benzene-containing anhydride and an amine substance under the action of a basic catalyst, the retarder obtained by the preparation method is used for a gypsum product, the setting time of gypsum can be effectively prolonged, and compared with other types of gypsum retarders, the gypsum retarder has remarkable low-doping and high-efficiency performance, the retarding time is stable, continuous and controllable to adjust, the retarder has a remarkable low-doping-amount effect, the curve of the retarding time rising along with the increase of the doping amount is stable and continuous, and the problems that most of retarders are low in doping and low in efficiency and easy to be excessive in high doping at present are perfectly solved; and the synthetic process is an organic synthesis process carried out at high temperature and high pressure under the protection of inert gas, so that the stability and adaptability of the gypsum retarder under different conditions are greatly improved, and the synthetic process can be widely applied to the adjustment of the setting time of different gypsum or different gypsum products.
本发明公开一种高效稳定石膏缓凝剂的制备方法，石膏缓凝剂由含苯的酸酐与胺类物质在碱性催化剂作用下合成反应所得，将所述制备方法得到的缓凝剂用于石膏制品，可有效延长石膏的凝结时间，相对其他类型石膏缓凝剂，本发明石膏缓凝剂具有显著的“低掺高效”性能，缓凝时间调节稳定连续可控，该缓凝剂在低掺量效果显著，缓凝时间随掺量提高上升曲线稳定连续，完美解决目前大多数缓凝剂“低掺低效，高掺易过量”这一问题，为建筑石膏凝结时间的调节带来很大便利，此合成工艺在高温高压以及惰性气体保护下进行的有机合成工艺，大大提高了石膏缓凝剂在不同条件下的稳定性与适应性，可广泛应用于不同石膏或者不同石膏产品中凝结时间的调节。
Preparation method of efficient and stable gypsum retarder
一种高效稳定的石膏缓凝剂制备方法
HUANG XIYUE (author) / WANG HUI (author) / RONG ZHONGYI (author) / CHENG SHUZHEN (author)
2021-09-24
Patent
Electronic Resource
Chinese
IPC:
C04B
Kalk
,
LIME
Efficient alkali-resistant gypsum retarder and preparation method thereof
| European Patent Office | 2023