Such as PVA powder, redispersible powder, other modified starch powder, sodium bentonite waterproof putty powder, etc.

　　2 .產(chǎn)品后壓延粉

　　2. Product post calendering powder

　　原因:缺少水硬性膠凝材料或氣硬性膠凝材料，缺少成膜材料解決:增加白水泥或灰鈣粉膠凝材料，膩?zhàn)右黾幽z量(非纖維)的比例。

　　Cause: lack of hydraulic cementitious material or pneumatic cementitious material, lack of film-forming material solution: increase the cementitious material of white cement or lime calcium powder, and increase the proportion of glue (non fiber) of putty.

　　3.該產(chǎn)品當(dāng)時(shí)不掉粉，但經(jīng)過一段時(shí)間后會(huì)掉粉原因:缺乏成膜材料膩?zhàn)?過多的淀粉粘合劑,很長(zhǎng)一段時(shí)間將在空氣中吸收水分,導(dǎo)致產(chǎn)品粉解決方案:膩?zhàn)犹砑幽z結(jié)材料的比例,如PVA聚乙烯醇粉末,可乳膠粉粉現(xiàn)象主要是產(chǎn)品技術(shù)比例不合理;施工技術(shù)不合理的理由少;底座太干，吸水較大(快)的底座應(yīng)先噴水或覆蓋膠水，否則也會(huì)滴粉(耐水性膩?zhàn)淤|(zhì)量沒問題)耐水性膩?zhàn)臃狐S問題主要原因:

　　3. The product was not powdered at that time, but it will be powdered after a period of time. The reasons are: the lack of film-forming material putty, too much starch adhesive, which will absorb water in the air for a long time, leading to the product powder solution: the proportion of putty added with cementitious materials, such as PVA polyethylene alcohol powder, the phenomenon of latex powder is mainly due to the unreasonable technical proportion of the product; the reasons for the unreasonable construction technology are few; If the base is too dry, the base with large (fast) water absorption shall be sprayed with water or covered with glue first, otherwise the powder will also be dripped (the quality of water-resistant putty is no problem). The main reasons for the Yellow problem of water-resistant putty are as follows:

　　灰白色的鈣粉過久出現(xiàn)發(fā)黃現(xiàn)象

　　Too long yellowing of grey white calcium powder不同地區(qū)、不同原料在同一地區(qū)的不同礦山，浙江、廣西的一些灰質(zhì)鈣品種有泛黃現(xiàn)象，河北灰質(zhì)鈣(鈣輕氧化物)不適合在環(huán)境潮濕或基層不完全干燥后進(jìn)行發(fā)黃膩?zhàn)邮┕ひ恍┗A(chǔ)添加劑與油灰發(fā)生反應(yīng)耐水膩?zhàn)硬僮餍圆頓ifferent areas and different raw materials in different mines in the same area, some varieties of grey calcium in Zhejiang and Guangxi have yellowing phenomenon. Hebei grey calcium (calcium light oxide) is not suitable for yellow putty construction after the environment is humid or the base is not completely dry. Some basic additives react with oil ash, and the operation of water-resistant putty is poor缺乏改善操作性的材料(纖維素、木纖維)

　　Lack of materials to improve operability (cellulose, wood fiber)灰鈣粉等填料的細(xì)度不夠，膠凝材料(PVA粉、改性淀粉)過干，吸水量大。

　　The fineness of filler such as lime and calcium powder is not enough, the cementitious material (PVA powder, modified starch) is too dry, and the water absorption capacity is large.

　　耐水膩?zhàn)拥哪退圆?/div>

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