## Redispersible Polymer Powder: What is it and how does it work?
1. **What is Redispersible Polymer Powder?**.
Redispersible Polymer Powder is a free-flowing, white powder made from polymer emulsion by spray drying. It contains many kinds of polymer latex, such as ethylene/vinyl acetate copolymer, vinyl acetate-ethylene copolymer, acrylic resin, and so on. It is widely used in construction and building materials.
2. **How does Redispersible Polymer Powder work in applications?**.
When Redispersible Polymer Powder is mixed with water, the polymer particles will absorb water and undergo a reversible coagulation. The polymer particles will form a membrane film in the substrate surface after the water evaporates. This film can improve the adhesion, cohesion, flexibility, and weather resistance of the substrate. The film also helps to distribute stress evenly, decreasing cracking and improving durability of the final product.
3. **What are the main functions of Redispersible Polymer Powder in construction materials?**.
Some main functions of Redispersible Polymer Powder in construction materials are improving adhesion, water resistance, abrasion resistance, and flexibility. It can also increase the workability and mechanical properties of materials. Additionally, it can reduce shrinkage and cracking, improve the durability and weather resistance of the final product.
4. **In which applications is Redispersible Polymer Powder commonly used?**.
Redispersible Polymer Powder is commonly used in mortar, tile adhesives, self-leveling compounds, external wall insulation systems, putty, and other building materials. It is particularly useful in construction materials that require high adhesion, flexibility, and durability.
5. **How should Redispersible Polymer Powder be stored and handled?**.
Redispersible Polymer Powder should be stored in a cool, dry place away from direct sunlight, moisture, and heat sources. It should be handled carefully to avoid inhaling dust or getting it in contact with skin or eyes. Proper protective equipment should be used when handling the powder.
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