Wall putty is a vital part of the painting process. It is a mixture of binders, fillers, pigments and additives that give the surface a smooth finish. However, during the construction of wall putty, some common problems may appear, such as deburring, foaming, etc. Deburring is the removal of excess material from a surface, while blistering is the formation of small air pockets on the surface. Both of these issues can affect the final appearance of the painted walls. However, there is a solution to these problems – use HPMC in wall putty.
HPMC stands for hydroxypropyl methylcellulose. It is a compound widely used in various industries including construction. HPMC is an ideal additive for wall putties as it improves the workability, cohesion and strength of the mixture. One of the significant benefits of using HPMC is the ability to reduce deburring and blistering. Here’s a breakdown of how HPMC can help eliminate these issues:
Deburring
Deburring is a common problem when applying wall putty. This happens when there is excess material on the surface that needs to be removed. This can lead to uneven surfaces and uneven paint distribution when painting walls. HPMC can be added to wall putty mixtures to prevent flashing from occurring.
HPMC acts as a retarder in wall putty, slowing down the drying time of the mixture. This allows the putty enough time to settle on the surface without excess material forming. With HPMC, the putty mixture can be applied in a single layer without reapplication.
In addition, HPMC increases the overall viscosity of the wall putty mixture. This means the mixture is more stable and less likely to separate or agglomerate. As a result, the wall putty mixture is easier to work with and spreads more easily over the surface, reducing the need for deburring.
bubbling
Blistering is another common problem that occurs during the construction of wall putty. This happens when the putty forms small air pockets on the surface as it dries. These air pockets can cause uneven surfaces and ruin the final look of the wall when it is painted. HPMC can help prevent these bubbles from forming.
HPMC acts as a film former in wall putty. When the putty dries, it forms a thin film on the surface of the putty. This film acts as a barrier, preventing moisture from penetrating deeper into the wall putty and creating air pockets.
In addition, HPMC also increases the bonding strength of the wall putty to the surface. This means the putty adheres better to the surface, reducing the formation of air pockets or gaps between the putty and the surface. With HPMC, the wall putty mixture forms a stronger bond with the surface, preventing blistering from occurring.
in conclusion
Wall putty is an important part of the painting process, and it is vital to ensure that it has a smooth finish. The occurrence of deburring and blistering can affect the final appearance of the painted wall. However, using HPMC as an additive to wall putty can help eliminate these problems. HPMC acts as a set retarder, increasing the viscosity of the mixture and preventing excess material from forming on the surface. At the same time, it helps create a stronger bond between the wall putty and the surface, preventing the formation of air pockets and bubbles. The use of HPMC in wall putty ensures that the final appearance of the painted wall is smooth, even and perfect.
Post time: Aug-05-2023