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延长石膏粉凝固时间的方法?

来源: 日期:2019-01-30 发布人:admin

  关于延长石膏粉凝固时间的方法是什么?下面由小编先容一下:

  What is the method of prolonging the solidification time of gypsum powder?
  石膏粉的凝固时间一般取决与石膏粉的标号,标号高的一般就凝结的快。石膏粉和水反应的速度是很快的,一般的操作时间只有几分钟,第1分钟的时间将石膏粉撒入水中,第2分钟搅拌,第3分钟倒模,很快就会硬化。
  The setting time of gypsum powder generally depends on the label of gypsum powder, and the higher the label, the faster the setting. The reaction speed between gypsum powder and water is very fast. The general operation time is only a few minutes. The gypsum powder is sprinkled into water in the first minute, stirred in the second minute and reversed in the third minute. It will harden quickly.
  建筑石膏粉:在装修粉刷过程中,需要延长石膏粉的凝固时间。不过让石膏凝固速度降慢的方法是在把石膏粉加水的时候使用温度较低的凉水,水越凉凝固速度就越慢,反之用热水就会很快。如果觉得这个办法不行,还可以加入柠檬酸或者先在石膏粉里掺好腻子粉,在水里掺上108胶白乳胶和纤维素,再调和。
  Building gypsum powder: In the process of decoration and painting, it is necessary to prolong the setting time of gypsum powder. However, the way to slow down the solidification rate of gypsum is to use cooler water 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 this method is not feasible, citric acid can be added or putty powder mixed in gypsum powder, 108 latex and cellulose mixed in water, and then blended.
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  模具石膏粉:如果硬化速度过快,可以往水中加一些缓凝剂,如:乙醇(酒精)约占6-8%,可以延长操作时间。一般的模型,使用建筑石膏粉或高强度石膏粉。如果铸模用,那需要专门的石膏铸粉。另外需要注意石膏粉与水的比例,水的多少直接影响石膏模的质量。
  Mould gypsum powder: If the hardening speed is too fast, some retarders can be added to the water, such as: ethanol (alcohol) accounts for about 6-8%, which can prolong the operation time. General models use building gypsum powder or high strength gypsum powder. If it is used for casting, special gypsum powder is needed. In addition, attention should be paid to the proportion of gypsum powder to water, the amount of water directly affects the quality of gypsum mould.
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