Putty powder is a kind of building decoration materials, the main components are talcum powder and glue. Just bought a layer of white on the surface of the blank room is putty, usually the whiteness of putty is more than 90, fineness is more than 330.

膩子是用來墻面修補的一種基材，為下一步裝飾（刷油漆貼壁紙）打下良好的基礎。

Putty is a kind of base material used for wall repair, which lays a good foundation for the next decoration (painting and wallpaper).

膩子分為內墻和外墻兩種，外墻膩子要抵抗風吹日曬所以膠性大、強度高，環保指數稍低。內墻膩子綜合指數較好，健康環保，所以內墻不外用，外墻不內用。

Putty can be divided into interior wall and exterior wall. Exterior wall putty is resistant to wind and sun, so it has high gel, high strength and low environmental protection index. The composite index of interior wall putty is good, healthy and environmental protection, so the interior wall is not for external use, and the exterior wall is not for internal use.

通常膩子是石膏或者水泥基的，這樣表面粗糙比較容易粘接牢固。但是在施工的時候還是要在基層上涂刷一層界面劑來封固基層同時提高墻面的附著力，讓膩子能夠更好的粘結在基面上。

Usually putty is gypsum or cement-based, so the surface is rough and easy to bond firmly. But in the construction, we should brush a layer of interface agent on the base to seal the base, and improve the adhesion of the wall, so that the putty can be better bonded on the base.

許多膩子粉使用者不得不承認，膩子膠粉脫粉是一個很嚴重的問題，它會引起乳膠漆的脫落，以及膩子層的起鼓，裂縫，進而引起乳膠漆飾面發生裂縫。

Many users of putty powder have to admit that it is a very serious problem for putty powder to come off. It will cause the peeling off of emulsion paint, the bulging and cracking of putty layer, and then the cracking of emulsion paint finish.

膩子粉脫粉掉粉、掉白是目前常見的膩子施工后問題，要了解膩子粉脫粉的原因，首先要了解膩子粉的基本原材料組分與固化原理，然后結合膩子施工時的墻面干燥程度、吸水率，溫度、天氣干燥程度等。

Putty powder off powder, off white is the common putty construction problems, to understand the reasons for putty powder off powder, first to understand the basic raw material components of putty powder and curing principle, and then combined with the putty construction of the wall dry degree, water absorption, temperature, weather dry degree.

今天福華建材小編找出了膩子粉掉粉的主要原因，一起來看看吧！

Today, Fuhua building materials Xiaobian found out the main reason of putty powder off powder, let's have a look!

原因一

Reason one

膩子的粘結強度不夠造成脫粉，生產廠家一味的降低成本，膠粉的粘結強度差，添加量較小，特別是內墻膩子，粘結強度的大小，脫粉不脫粉和膠粉以及膠水的質量和添加量有很大關系。

The adhesive strength of putty is not enough, which leads to powder removal. The manufacturer blindly reduces the cost. The adhesive strength of rubber powder is poor, and the amount of addition is small. Especially for the interior wall putty, the adhesive strength, powder removal without powder removal are closely related to the quality and amount of rubber powder and glue.

原因二

The second reason

設計配方不合理，選材的問題和結構的問題，在膩子配方中很重要。比如羥丙基甲基纖維素（HPMC）做內墻不防水的膩子，HPMC雖然很貴，但對雙飛粉，滑石粉，硅灰石粉等填充料不起作用，如果僅使用HPMC就會引起脫粉，而價格低的CMC、CMS反到不脫粉，但是CMC、CMS不能做防水膩子，也不能做外墻膩子，因為CMC和CMS遇到灰鈣粉、白水泥起反應，這都會引起脫粉，也有把聚丙烯酰胺加入灰鈣粉、白水泥做為防水涂料，也會起化學反應引起脫粉。

Unreasonable design formula, material selection and structure are very important in putty formula. For example, hydroxypropyl methylcellulose (HPMC) is used as non waterproof putty for interior wall. Although HPMC is very expensive, it does not work for filling materials such as Shuangfei powder, talcum powder and wollastonite powder. If only HPMC is used, it will cause powder removal. However, CMC and CMS with low price can not be used as waterproof putty or exterior wall putty, because CMC and CMS meet with lime powder, talcum powder and silica fume powder White cement reacts, which will cause depigmentation. In addition, adding polyacrylamide into lime calcium powder and white cement as waterproof coating will also cause chemical reaction to cause depigmentation.

原因三

The third reason

混合攪拌不均勻，是造成內外墻膩子脫粉的主要原因，全國有的生產廠家生產膩子粉設備簡單，五花八門，不是專用攪拌設備，攪拌不均勻，引起膩子脫粉。

Uneven mixing and mixing is the main reason for the internal and external wall putty powder removal. Some manufacturers in China produce putty powder with simple and varied equipment, which is not a special mixing equipment. Uneven mixing causes putty powder removal.