One, What is putty powder?
Putty powder is a type of building decoration material, primarily composed of talc and glue. Putty is a base material used for repairing and leveling walls, providing a solid foundation for subsequent decoration (such as painting or wallpapering). Putty is typically made of gypsum or cement, which creates a rough surface that is easy to bond and provides a secure hold. However, it is still necessary to apply an interface treatment agent to the substrate during construction to seal the surface and improve the wall's adhesion, allowing the putty to better bond to the substrate.
II. Functions and Benefits of Putty Powder
Putty powder is used for repairing and leveling walls. Its main functions are to provide a strong, smooth, and glossy surface. Putty powder is the foundation for the entire wall finishing process. Subsequently, the surface material primarily serves to color the surface, providing aesthetic and decorative effects. Putty is available in two types: interior and exterior.
1、Exterior wall putty powder is resistant to wind and sunlight, resulting in high adhesion and strength, but with a slightly lower environmental rating. Interior wall putty powder has a better overall rating and is healthier and more environmentally friendly, so it is recommended for interior use only. Typically, putty powder is made from gypsum or cement. Even with rough surfaces, proper adhesion is achieved by applying a layer of interface treatment agent to the substrate before applying the putty powder, which seals the substrate and improves the wall's adhesion.
2. To ensure the putty powder adheres effectively to the substrate, the putty powder typically consists of base materials, fillers, water, and additives. The base material is the most crucial component, primarily responsible for bonding and other functions. Common bonding agents for putty powder include cement and organic polymers, which are available as emulsions and powders. Cement is a good bonding agent with good adhesion, durability, and cost-effectiveness, but it has relatively low tensile strength and crack resistance.
3. Organic polymers can be modified and strengthened, thereby improving the performance of the putty. The filler mainly serves to fill, with commonly used materials such as calcium carbonate, talc, and silica sand. It is important to match the filler particle size. Additives include thickeners and water retention agents, which help to retain moisture and improve storage and construction performance. Commonly used materials include cellulose. Anti-freezing agents mainly improve the storage stability of the putty at low temperatures.