How to tell if hydroxypropyl methylcellulose is dry

Hydroxypropyl methylcellulose is generally used as a thickener in the coating industry, which can make the coating bright and delicate, not powdery, and improve the leveling characteristics. Let me introduce to you how to check whether the putty powder is dry. The wall is fully dry. Visually speaking, the color of all the walls is consistent and white, without the gray feeling when it is wet. Gently rubbing with your hands, the touch is very smooth, and it will be slightly dusty.

Or use sandpaper to polish lightly, if a large amount of dust appears, it means that the putty powder of one layer has dried completely, and if there is less dust or no dust at all, it means that the putty powder has not dried completely.

The drying time of the putty powder should be adjusted according to different climate conditions. In a dark and humid climate, it needs to prolong the drying time. Under normal circumstances, the part of the inner corner is not easy to dry out. If the part of the inner corner is completely dry, it is basically possible to tell that all the walls have been completely dry.

When finishing the decoration process on the wall, generally we need to scrape the putty on the wall first, and the main function of the putty powder is to level the top of the wall, so that the wall is clean and smooth, so that the wall can be used later. Therefore, it is necessary to ensure that these processes are terminated smoothly and effectively. At present, the quality of domestic hydroxypropyl methylcellulose varies greatly, and the price varies widely, making it difficult for customers to make the right choice.

The addition of trace substances can improve the construction performance and improve the operability. Of course, some performances will be affected, but overall it is good; while the products of domestic manufacturers add a large amount of certain ingredients, the only purpose is to reduce costs , The water retention and cohesive properties of the product are greatly reduced, resulting in many construction quality problems.