在墻面裝修中，膩子粉作為基層處理的核心材料，其施工質量直接決定了最終飾面的美觀度與使用壽命。然而，在實際操作中，由于材料配比、施工工藝或環境條件等因素，常會出現各類問題。以下是膩子粉施工中常見問題的成因分析及專業解決方案：

In wall decoration, putty powder is the core material for base treatment, and its construction quality directly determines the aesthetics and service life of the final finish. However, in practical operation, various problems often arise due to factors such as material ratio, construction technology, or environmental conditions. The following is an analysis of the causes of common problems in putty powder construction and professional solutions:

一、 表面起泡與爆裂

1、 Surface blistering and bursting

產生原因：

Cause:

攪拌不均勻，漿體中含有未溶解的粉狀顆粒，施工后顆粒吸水溶脹形成爆裂。

The mixing is uneven, and the slurry contains undissolved powdered particles. After construction, the particles absorb water and swell, causing bursting.

基層過于干燥或孔洞較多，批刮時空氣被擠入膩子層中無法排出。

The base layer is too dry or has many holes, causing air to be squeezed into the putty layer during scraping and unable to be discharged.

單次批刮過厚或施工環境風大、光照強，導致表面失水過快。

A single batch of scraping is too thick or the construction environment is windy and sunny, resulting in rapid surface dehydration.

解決方案：

Solution:

出現大面積起泡時，可用鏟刀壓破小泡口，重新用合適的膩子施刮起泡面層。預防方面，攪拌后需靜置10分鐘左右再次攪拌；對于粗糙或干燥的墻面，施工前可用清水潤濕（待無明水后再刮）；施工時若發現氣泡，應在水印消除前用刮刀進行壓泡破除處理。

When there are large areas of bubbles, a scraper can be used to break through the small bubble opening, and a suitable putty can be applied again to scrape the surface layer. In terms of prevention, after stirring, it is necessary to let it stand for about 10 minutes before stirring again; For rough or dry walls, they can be moistened with clean water before construction (wait until there is no visible water before scraping); If bubbles are found during construction, a scraper should be used to remove them before removing the watermark.

二、 墻面開裂

2、 Wall cracking

產生原因：

Cause:

基層未徹底干透（含水率＞10%）即進行施工。

Construction shall be carried out before the grassroots is completely dried (moisture content>10%).

底層膩子未干透就刮面層，導致內外層干縮程度不一。

Scraping the surface layer before the bottom putty is completely dry causes uneven drying and shrinkage of the inner and outer layers.

單次批刮過厚（超過1.5mm），內部干燥慢而表面干燥快，產生收縮應力。

A single batch scraping that is too thick (over 1.5mm) results in slow internal drying and fast surface drying, leading to shrinkage stress.

解決方案：

Solution:

對于已開裂的膩子，需將開裂部分鏟除，若裂紋較小可采用柔性膩子進行第一道施工。預防開裂必須遵循“薄層多遍”原則，每道施工厚度控制在0.5mm左右，且兩道施工間隔時間需大于4小時，確保前道徹底干透后再進行下一道。

For cracked putty, the cracked part should be removed. If the crack is small, flexible putty can be used for the first construction. Preventing cracking must follow the principle of "thin layer multiple times", with each construction thickness controlled at around 0.5mm, and the interval between two constructions should be greater than 4 hours to ensure that the previous one is completely dry before proceeding to the next one.

三、 起皮、脫落與脫層

3、 Peeling, peeling, and delamination

產生原因：

Cause:

基層表面有灰塵、油污、脫模劑或舊墻過于光滑，導致粘結強度差。

The surface of the base layer may have dust, oil stains, release agents, or old walls that are too smooth, resulting in poor bonding strength.

基層嚴重粉化、吸水率過大，或兩層膩子施工間隔過長（超過15天）。

The base layer is severely powdered, the water absorption rate is too high, or the interval between two layers of putty construction is too long (more than 15 days).

膩子超過保質期，粘結性能下降。

Putty exceeds its shelf life and its bonding performance decreases.

解決方案：

Solution:

出現脫落需徹底鏟除脫落層。針對光滑舊墻面，需打磨增加粗糙度并涂刷界面劑；對于含脫模劑的墻面，需用除油清洗劑清理；嚴重粉化的基層可用10%封閉底漆稀釋液進行封固。此外，務必在膩子保質期內使用，并盡量縮短兩道膩子的施工間隔。

If detachment occurs, the detachment layer must be completely removed. For smooth old walls, it is necessary to polish to increase roughness and apply interface agent; For walls containing release agents, degreasing and cleaning agents are required for cleaning; Severe powdering of the base layer can be sealed with 10% sealing primer diluent. In addition, it is necessary to use the putty within its shelf life and try to shorten the construction interval between two layers of putty as much as possible.

四、 表面變黃

4、 Surface turning yellow

產生原因：

Cause:

主要發生在室內舊墻面翻新時。舊墻膩子若使用了大量PVA膠水，老化分解會產生不飽和酸，與膩子中的鈣離子反應生成黃色的鈣鹽。

Mainly occurs during the renovation of old indoor walls. If a large amount of PVA glue is used for old wall putty, it will produce unsaturated acids during aging and decomposition, which will react with calcium ions in the putty to form yellow calcium salts.

解決方案：

Solution:

在批刮新膩子前，必須用環保膠水滾涂兩遍，或使用封閉底漆滾涂兩道，徹底干透后再行施刮內墻膩子，以有效阻斷堿性物質滲出。

Before applying new putty, it is necessary to apply it twice with environmentally friendly adhesive or with a sealing primer. After it is completely dry, apply the putty to the interior wall to effectively prevent alkaline substances from seeping out.

五、 難打磨與起砂掉粉

5、 Difficult to polish and lose powder due to sanding

產生原因：

Cause:

打磨間隔時間太長（超過48小時），或選用的砂紙過細。

The polishing interval is too long (more than 48 hours), or the selected sandpaper is too fine.

膩子粉本身質量差，或攪拌時加水過多導致粘結劑失效。

The putty powder itself has poor quality, or adding too much water during mixing can cause the adhesive to fail.

解決方案：

Solution:

內墻膩子建議在24小時內進行打磨，最遲不超過48小時。打磨時先用180目粗砂紙交叉打磨去除痕跡，再用240目細砂紙輕磨提升光滑度。若出現嚴重起砂掉粉，說明材料不合格或配比失衡，需鏟除后選用優質耐水膩子重新施工。

It is recommended to polish the interior wall putty within 24 hours, no later than 48 hours. When polishing, first use 180 grit coarse sandpaper to cross polish and remove traces, and then use 240 grit fine sandpaper to lightly polish and improve smoothness. If there is severe sanding and powder loss, it indicates that the material is unqualified or the ratio is unbalanced. It needs to be removed and high-quality water-resistant putty should be used for re construction.

六、 施工環境溫濕度控制建議

6、 Suggestions for temperature and humidity control in construction environment

產生原因：

Cause:

膩子的固化成膜對溫濕度極為敏感。當環境溫度低于5℃時，膩子粉中的聚合物反應會極度緩慢，導致強度無法形成甚至受凍粉化；而溫度高于35℃或空氣濕度低于30%時，水分蒸發過快，極易造成表面結皮、內部未干透，從而引發收縮開裂。反之，當相對濕度大于85%（如梅雨季節）時，水分難以揮發，不僅延長干燥時間，還容易導致墻面起泡、發霉或后期涂料泛黃。

The solidification and film formation of putty are extremely sensitive to temperature and humidity. When the ambient temperature is below 5 ℃, the polymer reaction in the putty powder will be extremely slow, resulting in the inability to form strength and even freezing powder; When the temperature is above 35 ℃ or the air humidity is below 30%, the evaporation of water is too fast, which can easily cause surface crust and internal incomplete drying, leading to shrinkage and cracking. On the contrary, when the relative humidity is greater than 85% (such as during the rainy season), the moisture is difficult to evaporate, which not only prolongs the drying time, but also easily leads to wall bubbles, mold, or yellowing of the paint in the later stage.

解決方案：

Solution:

嚴控溫濕度區間：施工期間及完工后48小時內，室內環境溫度應嚴格保持在5℃-35℃之間，空氣相對濕度控制在30%-85%之間。

Strict temperature and humidity control range: During construction and within 48 hours after completion, the indoor environment temperature should be strictly maintained between 5 ℃ -35 ℃, and the relative humidity of the air should be controlled between 30% -85%.

夏季高溫應對：避開中午11點至下午3點的高溫時段施工，盡量選擇早晚涼爽時進行。若室內過于干燥，可適當灑水增濕；施工后需關閉門窗進行“陰干”，嚴禁強風直吹或陽光暴曬，防止水分急速流失導致開裂。

Summer high temperature response: Avoid construction during the high temperature period from 11 noon to 3 pm, and try to choose cool mornings and evenings. If the indoor environment is too dry, it is advisable to sprinkle water appropriately to increase humidity; After construction, doors and windows should be closed for "shade drying". Strong winds or direct sunlight are strictly prohibited to prevent rapid loss of moisture and cracking.

冬季低溫應對：必須提前開啟暖氣或電暖設備，確保室內及墻面基層溫度在5℃以上。施工時建議使用35℃-40℃的溫水調配膩子，以激發材料活性。同時注意溫和通風，嚴禁冷風直接吹向未干透的墻面。

Winter low temperature response: Heating or electric heating equipment must be turned on in advance to ensure that the indoor and wall base temperatures are above 5 ℃. It is recommended to use warm water at 35 ℃ -40 ℃ to mix putty during construction to stimulate material activity. At the same time, pay attention to gentle ventilation and strictly prohibit cold air from blowing directly onto walls that are not completely dry.

高濕環境應對：在連續陰雨或高濕天氣，應暫停施工。若必須趕工期，需使用工業除濕機或空調輔助抽濕，并將每遍膩子的養護干燥時間延長至正常情況的2-3倍，確保含水率達標后再進行下一道工序。

Response to high humidity environment: Construction should be suspended during continuous rainy or high humidity weather. If it is necessary to meet the deadline, an industrial dehumidifier or air conditioner should be used to assist in dehumidification, and the curing and drying time of each layer of putty should be extended to 2-3 times that of normal conditions to ensure that the moisture content meets the standard before proceeding to the next process.