The setting time of gypsum powder generally depends on the grade of gypsum powder, and the one with high grade generally sets fast. Gypsum powder and water reaction speed is very fast, the general operation time is only a few minutes, 1 minute of time to sprinkle gypsum powder into water, 2 minutes of stirring, 3 minutes of mold, will soon harden.

一、 建筑石膏粉：在裝修粉刷過程中，需要延長石膏粉的凝固時間。不過讓石膏凝固速度降慢的方法是在把石膏粉加水的時候使用溫度較低的涼水，水越?jīng)瞿趟俣仍铰粗脽崴畷芸臁Ｈ绻X得這個辦法不行，還可以加入檸檬酸或者先在石膏粉里摻好膩子粉，在水里摻上108膠白乳膠和纖維素，再調(diào)和。

1、 Building gypsum powder: in the process of decoration and painting, it is necessary to extend the solidification time of gypsum powder. However, the way to slow down the solidification rate of gypsum is to use cool water with lower temperature when adding water to gypsum powder. The cooler the water is, the slower the solidification rate will be. On the contrary, hot water will be used quickly. If you think this method is not good, you can also add citric acid, or first mix putty powder in gypsum powder, mix 108 glue white emulsion and cellulose in water, and then mix.

二、 模具石膏粉：如果硬化速度過快，可以往水中加些緩凝劑，如：乙醇(酒精)約占6-8%，可以延長操作時間。一般的模型，使用建筑石膏粉或高度石膏粉。如果鑄模用，那需要專門的石膏鑄粉。另外需要注意石膏粉與水的比例，水的多少直接影響石膏模的質(zhì)量。

2、 Mold gypsum powder: if the hardening speed is too fast, you can add some retarder to the water, such as: ethanol (alcohol) accounts for about 6-8%, which can extend the operation time. General model, using building gypsum powder or high gypsum powder. If the mold is used, it needs special gypsum powder. In addition, we need to pay attention to the proportion of gypsum powder and water, the amount of water directly affects the quality of gypsum mold.

以上就是濟(jì)南石膏粉的凝固時間的介紹，希望可以幫助到大家，更多精彩內(nèi)容請大家關(guān)注：http://www.man5g.cn

The above is the introduction of the setting time of Jinan gypsum powder. I hope it can help you http://www.man5g.cn