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 stirred with 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(shí)產(chǎn)生，在應(yīng)力作用下拆散。也就是說(shuō)在攪拌下粘度降低，在靜止時(shí)粘度恢復(fù)。
Cellulose is used on putty as a thickening agent and water retaining agent. Due to the Thixotropy of cellulose itself, the addition of cellulose in gypsum powder also leads to the Thixotropy of putty after adding water. This Thixotropy is caused by the destruction of the loosely bound structure of the components in the gypsum powder. This structure is generated at rest and disintegrates under stress. That is to say, the viscosity decreases under stirring and recovers at rest.
2. What is the reason why Jinan gypsum powder is relatively heavy during the batch scraping process?
出現(xiàn)這種情況一般用的纖維素粘度過(guò)高，有的廠家用20萬(wàn)的來(lái)做石膏粉，這樣做出的石膏粉因粘度偏高，所以在批刮時(shí)出現(xiàn)發(fā)沉的感覺(jué)。內(nèi)墻石膏粉建議添加量為3—5公斤，粘度為8—10萬(wàn)。
In this situation, the viscosity of the cellulose used is generally too high. Some factories use 200000 yuan to make gypsum powder, and the gypsum powder produced in this way has a sinking feeling during batch scraping due to its high viscosity. The recommended amount of gypsum powder for interior walls is 3-5 kilograms, with a viscosity of 80000 to 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(jué)粘度不一樣？
3. Why do gypsum powder and mortar made of the same viscosity cellulose 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(huì)逐漸降低的，當(dāng)溫度超過(guò)產(chǎn)品凝膠溫度時(shí)，產(chǎn)品將會(huì)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(kāi)裂、起泡、脫粉等現(xiàn)象的原因？
4. What are the reasons why gypsum powder is prone to cracking, foaming, and peeling?
主要原因基層未徹底干透施工、基底過(guò)于粗糙，批蕩速度過(guò)快、一次施工膩?zhàn)訉舆^(guò)厚，大于2.0mm、膩?zhàn)臃蹝伖鈺r(shí)間掌握不佳。沒(méi)有把握好表面和底層之間的干濕時(shí)間和水分揮發(fā)速度，季節(jié)不同基層和表面的干燥時(shí)間不同所導(dǎo)致。
The main reasons are that the base layer is not completely dry during construction, the base is too rough, the batch speed is too fast, the putty layer for one-time construction is too thick, larger than 2.0mm, and the putty powder polishing time is not well controlled. The failure to grasp the dry and wet time and moisture evaporation rate between the surface and bottom layer is caused by different seasons and different drying times for the base layer and surface.
石膏粉的4個(gè)常見(jiàn)問(wèn)答相關(guān)事項(xiàng)就講解到這里了，希望能夠給您好的幫助，更多事項(xiàng)就來(lái)我們網(wǎng)站
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