Hydroxypropyl Methyl Cellulose HPMC Powder for Gypsum Putty
Hydroxypropyl Methyl Cellulose (HPMC) powder is a common additive used in gypsum putty, also known as wall putty. It is a cellulose ether, a modified form of cellulose, the main component of plant cell walls.
Hydroxypropyl Methyl Cellulose (HPMC) powder is a common additive used in gypsum putty, also known as wall putty. It is a cellulose ether, a modified form of cellulose, the main component of plant cell walls.
HPMC offers several benefits to gypsum putty:
- Improved workability: HPMC acts as a thickener, increasing the viscosity of the putty and making it easier to apply smoothly. This reduces the risk of sagging or dripping, especially for applications on ceilings or overhead surfaces.
- Enhanced water retention: HPMC helps the putty retain moisture, preventing it from drying out too quickly. This allows for a longer working time, giving applicators more time to spread and finish the putty before it sets. Reduced moisture evaporation also helps prevent cracking and shrinkage of the putty as it dries.
- Better adhesion: HPMC can improve the adhesion of the putty to the substrate, creating a stronger bond. This is important for ensuring a durable and long-lasting finish.
- Smoother finish: HPMC helps to create a smoother surface on the applied putty, minimizing the need for extensive sanding after application.
