1、石膏粉為什么在加水后越攪就越稀呢？

1. Why does gypsum powder become thinner as it is agitated after adding water?

纖維素作為一種增稠劑保水劑在膩?zhàn)由蠎?yīng)用的，由于纖維素本身的觸變性，石膏粉中纖維素的加入也導(dǎo)致了膩?zhàn)蛹铀螽a(chǎn)生了觸變性。這種觸變性是由于濟(jì)南石膏粉中組分呈松散結(jié)合的結(jié)構(gòu)被破壞引起的。這種結(jié)構(gòu)在靜止時產(chǎn)生，在應(yīng)力作用下拆散。也就是說在攪拌下粘度降低，在靜止時粘度恢復(fù)。

Cellulose is used as a thickener and water-retaining agent on putty. Due to the thixotropy of cellulose itself, the addition of cellulose in gypsum powder also leads to thixotropy of putty after adding water. This thixotropy is caused by the destruction of the loosely combined structure of the components in Jinan gypsum powder. This kind of structure is generated when it is still and is disassembled under the action of stress. That is to say, the viscosity decreases under stirring and recovers at rest.

2、石膏粉在批刮過程中比較沉是怎么回事？

2. What is the reason why gypsum powder is relatively heavy during batch scraping?

出現(xiàn)這種情況一般用的纖維素粘度過高，有的廠家用20萬的來做石膏粉，這樣做出的石膏粉因粘度偏高，所以在批刮時出現(xiàn)發(fā)沉的感覺。內(nèi)墻石膏粉建議添加量為3—5公斤，粘度為8—10萬。

In this case, the viscosity of cellulose used is usually too high. Some factories use 200000 cellulose to make gypsum powder. Because of the high viscosity, the gypsum powder made in this way has a sinking feeling when scraping. The recommended amount of gypsum powder for interior wall is 3-5 kg, and the viscosity is 8-100000.

3、冬天和夏天用同樣的粘度纖維素做出的石膏粉和砂漿為什么感覺粘度不一樣？

3. Why do gypsum powder and mortar made of cellulose with the same viscosity feel different in winter and summer?

由于產(chǎn)品的熱凝膠性，決定了產(chǎn)品的粘度隨溫度的升高會逐漸降低的，當(dāng)溫度超過產(chǎn)品凝膠溫度時，產(chǎn)品將會從水中析出的，從而失去粘度。

Due to the thermal gelling property of the product, the viscosity of the product will gradually decrease with the increase of temperature. When the temperature exceeds the gel temperature of the product, the product will precipitate from the water, thus losing the viscosity.

4、石膏粉容易出現(xiàn)開裂、起泡、脫粉等現(xiàn)象的原因？

4. Why gypsum powder is prone to crack, blister, and desulphurization?

主要原因基層未徹底干透施工、基底過于粗糙，批蕩速度過快、一次施工膩?zhàn)訉舆^厚，大于2.0mm、膩?zhàn)臃蹝伖鈺r間掌握不佳。沒有把握好表面和底層之間的干濕時間和水分揮發(fā)速度，季節(jié)不同基層和表面的干燥時間不同所導(dǎo)致。

The main reasons are that the base course is not completely dry, the base is too rough, the batching speed is too fast, the putty layer is too thick for one-time construction, more than 2.0mm, and the putty powder polishing time is not well controlled. The drying and wetting time and moisture volatilization rate between the surface and the bottom layer are not well controlled, which is caused by the different drying time of the base layer and the surface in different seasons.

有關(guān)石膏粉的四個問答事項(xiàng)就講解到這里了，當(dāng)然建議您在使用該產(chǎn)品之前要對其進(jìn)行仔細(xì)的了解，才能避免大部分問題的出現(xiàn)。關(guān)注我們http://www.sjzmx.cn，了解更多事項(xiàng)！

Here are the four questions and answers about gypsum powder. Of course, it is recommended that you carefully understand the product before using it to avoid most problems. Follow us http://www.sjzmx.cn , learn more!