1, putty bonding strength is not enough, which leads to pulverization, and manufacturers blindly reduce costs. The adhesive strength of rubber powder is poor, and the addition amount is small, especially for interior wall putty. Bonding strength and powder removal are closely related to the quality and addition of rubber powder and glue.

2. Uneven mixing and stirring is also the main reason why the putty powder on the inner and outer walls falls off. Some manufacturers in China have simple and diverse equipment for producing putty powder, which is not a special mixing equipment. Uneven mixing will lead to the removal of putty powder.

3. The quality of fillers is also different, which easily leads to powder removal. Fillers are widely used in interior and exterior wall putty, but the contents of CO2 and CO3 in bicarbonate powder and talcum powder vary from place to place, and different pH values can also cause putty to powder off.

4. The high water absorption at the grass-roots level leads to the putty drying quickly, and there is not enough water for curing.

5. If the polishing time of the putty powder on the interior wall is not mastered, the powder will be removed after the surface is dried and polished;