The setting time of gypsum powder generally depends on the label of gypsum powder, and the high mark generally coagulates quickly. The reaction speed of gypsum powder and water is very fast, and the general operation time is only a few minutes. In the first minute, the gypsum powder is sprinkled into the water, the second minute is stirred, and the third minute is inverted. It will harden quickly.

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，水越涼凝固速度就越慢，反之用熱水就會很快。如果覺得這個辦法不行，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，再調和。

Building gypsum powder: in the process of decoration and painting, it is necessary to extend the setting time of gypsum powder. However, the way to slow down the setting speed of gypsum is to use cool water with lower temperature when adding water to gypsum powder. The cooler the water is, the slower the setting speed will be. Otherwise, it will be very fast with hot water. If you don't think this method can't work, you can also add citric acid or first mix putty powder in gypsum powder, add 108 glue white latex and cellulose in water, and then mix.

模具石膏粉：如果硬化速度過快，可以往水中加一些緩凝劑，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強度石膏粉。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量。

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

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關鍵詞：濟南石膏粉