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.

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、掉白是目前更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。今天膩子粉廠家小編談一談膩子粉掉粉的主要原因，一起來看看吧!

It is the most common problem after the putty construction that the putty powder is removed from the powder and white. To understand the reasons of the putty powder removal, we should first understand the basic raw material components and curing principle of the putty powder, and then combine the dryness of the wall surface, water absorption, temperature and weather dryness during the putty construction. Today, putty powder manufacturers small series to talk about the main reasons for 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 not waterproof putty for interior wall. Although HPMC is very expensive, it doesn't work for filling materials such as Shuangfei powder, talcum powder and wollastonite powder. If HPMC is used only, it will cause powder removal, while CMC and CMS with low price can't do it, but CMC and CMS can't do waterproof putty and exterior wall putty, because CMC and CMS meet lime powder and white cement Reaction, which will cause depigmentation, but also adding polyacrylamide to lime calcium powder, white cement as waterproof coating, will also have a 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.

原因四

Reason four

生產工藝的錯誤造成膩子脫粉，如果混合攪拌機沒有清掃的功能，殘留較多，普通膩子中的CMC就會和防水膩子中的灰鈣粉起反應，內墻膩子中的CMC、CMS和外墻膩子的白水泥起反應而造成脫粉。有的公司專用設備設置了清掃口，可以把機器中的殘留物清掃干凈，不僅保證膩子的質量，還可以一機多用，買一臺設備生產多種膩子。

If the mixing mixer has no cleaning function and there are many residues, the CMC in the ordinary putty will react with the lime powder in the waterproof putty, and the CMC, CMS in the interior wall putty and the white cement in the exterior wall putty will react to cause the powder removal. Some companies set up special equipment cleaning mouth, can clean up the residues in the machine, not only to ensure the quality of putty, but also can be a multi-purpose machine, buy a device to produce a variety of putty.

原因五

Five reasons

填充料的質量的不同也容易造成脫粉，內外墻膩子大量的使用填充料，但各地重鈣粉、滑石粉里面Ca2CO3的含量不同，酸堿度不同也會造成膩子的脫粉，比如重慶和成都的內墻膩子粉用同樣的膠粉，但滑石粉、重鈣粉不同，在重慶不脫粉，在成都就脫粉，在河南、東北不脫粉，而在一些地區就脫粉。

Different quality of fillers can easily lead to depigmentation. A large number of fillers are used for internal and external wall putty. However, the content of ca2co3 in heavy calcium powder and talc powder is different in different places, and the pH value is different. For example, the same rubber powder is used for internal wall putty in Chongqing and Chengdu, but talc powder and heavy calcium powder are different. In Chongqing, the powder is not depigmented, but in Chengdu, and in Henan and East China There is no flour removal in the north, but in some areas.

原因六

Reason 6

夏季外墻膩子的保水不夠，特別是在大樓高層門口、窗口等高溫通風的地方，灰鈣粉和水泥的初凝時間不夠就已失去水份，又沒有養護好，也會嚴重脫粉。

In summer, the water retention of external wall putty is not enough, especially in high-temperature and ventilated places such as high-rise building doors and windows. If the initial setting time of lime, calcium powder and cement is not enough, the water will be lost, and if the maintenance is not good, the powder will be seriously removed.