Shanghai liefan decoration materials Co., Ltd.: what causes most of the problems exposed in the imitation aluminum alloy door and window coatings?
Most of the problems exposed in imitation aluminum alloy door and window coatings are due to the poor quality control of raw materials. In order to further promote the application of imitation door and window coating in exterior wall decoration and avoid coating defects, reasonable selection of raw materials, preparation of special putty and determination of appropriate construction technology are the key points of imitation door and window coating.
Shanghai liefan decoration materials Co., Ltd.: how to strengthen the quality control of raw materials of imitation aluminum alloy door and window coatings?
Quality requirements of coating putty
As a kind of surface pretreatment material, putty can not only play the role of gap filling, leveling and strengthening the bond strength between the coating and the wall, but also greatly enhance the protection and decoration of the coating on the building and prolong the service life of the coating. Putty is a paste made of organic polymer materials and inorganic materials as binder, adding thixotropic agent, defoamer, pigments and fillers.
Cement is an inorganic binder commonly used in putty. The variety and dosage of cement are important factors affecting the bonding strength. Under the same dosage, the bond strength of white cement is lower than that of ordinary cement. With the increase of cement dosage, the bond strength increases. When the cement content increases to a certain extent, the bond strength tends to balance, while the volume shrinkage rate increases, and the cracking degree tends to be serious with the increase of cement dosage. The cement consumption should not exceed 30%.
How to strengthen the quality control of raw materials of imitation aluminum alloy door and window coatings? I think you should understand! If you have any questions, you can consult our online customer service or call our hotline.