Putty powder is a kind of building decoration materials, the main components are talcum powder and glue. A layer of white putty on the surface of the blank room just purchased is putty. Generally, the whiteness of putty is above 90 and the fineness is above 330.

許多膩?zhàn)臃凼褂谜卟坏貌怀姓J(rèn)，膩?zhàn)幽z粉脫粉是一個(gè)很嚴(yán)重的問(wèn)題，它會(huì)引起乳膠漆的脫落，以及膩?zhàn)訉拥钠鸸模芽p，進(jìn)而引起乳膠漆飾面發(fā)生裂縫。

Many users of putty powder have to admit that it is a very serious problem to remove the powder from the putty powder, which will cause the latex paint to fall off, and the putty layer to bulge and crack, and then cause the emulsion paint surface to crack.

膩?zhàn)臃勖摲鄣舴?、掉白是目前常?jiàn)的膩?zhàn)邮┕ず髥?wèn)題，要了解膩?zhàn)臃勖摲鄣脑?，首先要了解膩?zhàn)臃鄣幕驹牧辖M分與固化原理，然后結(jié)合膩?zhàn)邮┕r(shí)的墻面干燥程度、吸水率，溫度、天氣干燥程度等。今天膩?zhàn)臃蹚S家小編談一談膩?zhàn)臃鄣舴鄣闹饕?，一起?lái)看看吧!

It is a common problem after the putty construction that the putty powder degrades and whitens. To understand the reasons of the putty powder removing powder, we should first understand the basic raw material composition and curing principle of the putty powder, and then combine the dryness degree of the wall surface, water absorption rate, temperature and weather dryness degree during the putty construction. Today's putty powder manufacturers to talk about the putty powder powder off the main reason, let's have a look!

原因一

Reason one

膩?zhàn)拥恼辰Y(jié)強(qiáng)度不夠造成脫粉，生產(chǎn)廠家一味的降低成本，膠粉的粘結(jié)強(qiáng)度差，添加量較小，特別是內(nèi)墻膩?zhàn)?，粘結(jié)強(qiáng)度的大小，脫粉不脫粉和膠粉以及膠水的質(zhì)量和添加量有很大關(guān)系。

The adhesive strength of putty is not enough, which leads to powder shedding. The manufacturers blindly reduce the cost. The adhesive strength of rubber powder is poor, and the addition amount is small, especially for the putty of interior wall. The size of bonding strength and the quality and amount of glue powder and glue have a great relationship.

原因二

Reason two

設(shè)計(jì)配方不合理，選材的問(wèn)題和結(jié)構(gòu)的問(wèn)題，在膩?zhàn)优浞街泻苤匾?。比如羥丙基甲基纖維素(HPMC)做內(nèi)墻不防水的膩?zhàn)?，HPMC雖然很貴，但對(duì)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(huì)引起脫粉，而價(jià)格低的CMC、CMS反到不脫粉，但是CMC、CMS不能做防水膩?zhàn)?，也不能做外墻膩?zhàn)樱驗(yàn)镃MC和CMS遇到灰鈣粉、白水泥起反應(yīng)，這都會(huì)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(huì)起化學(xué)反應(yīng)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 walls. Although HPMC is very expensive, it does not work on fillers such as Shuangfei powder, talcum powder and wollastonite powder. If only HPMC is used, it will cause de dusting. However, CMC and CMS can not be used as waterproof putty or exterior wall putty, because CMC and CMS encounter lime calcium powder and white cement Reaction, which will lead to de powdering, but also add polyacrylamide to lime calcium powder, white cement as waterproof coating, will also cause chemical reaction.

原因三

Reason 3

混合攪拌不均勻，是造成內(nèi)外墻膩?zhàn)用摲鄣闹饕?，全?guó)有的生產(chǎn)廠家生產(chǎn)膩?zhàn)臃墼O(shè)備簡(jiǎn)單，五花八門，不是專用攪拌設(shè)備，攪拌不均勻，引起膩?zhàn)用摲邸?/div>

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