What types of RDP latex powder are there?

RDP (Redispersible Polymer Powder) is an important polymer material widely used in the fields of construction, coatings and adhesives. According to its chemical composition and functional properties, RDP latex powder can be divided into many types. The following discusses the main types of RDP latex powder, its characteristics and applications in detail.

I. Ethylene-vinyl acetate copolymer (EVA) latex powder

1. **Composition and characteristics**:

- Ethylene-vinyl acetate copolymer latex powder is copolymerized by ethylene and vinyl acetate (VAE) and has good flexibility and adhesion.

- EVA latex powder has excellent water resistance, crack resistance and aging resistance, and can enhance the adhesion and flexibility of mortar and coating.

2. **Application**:

- Widely used in cement-based and gypsum-based mortars to improve the flexibility and crack resistance of mortars.

- Suitable for tile adhesives, external thermal insulation systems (ETICS), self-leveling mortars and other fields.

### 2. Ethylene-vinyl acetate-acrylic acid copolymer (VA/VEA) latex powder

1. **Composition and characteristics**:

- It is copolymerized by ethylene, vinyl acetate and acrylate (such as butyl acrylate), and has better flexibility and weather resistance.

- VA/VEA latex powder enhances water resistance and alkali resistance while maintaining excellent bonding strength.

2. **Application**:

- It is commonly used in flexible waterproof coatings, interior and exterior wall putties and decorative mortars.

- It is suitable for building materials that require high flexibility and weather resistance, such as waterproof membranes, floor glue, etc.

### 3. Ethylene-vinyl acetate-styrene copolymer (VAE-S) latex powder

1. **Composition and characteristics**:

- It is copolymerized by ethylene, vinyl acetate and styrene, and has excellent water resistance and aging resistance.

- VAE-S latex powder has high bonding strength and impact resistance.

2. **Application**:

- Suitable for high-performance mortar, tile adhesive, reinforced mortar and repair mortar.

- Commonly used in high-demand application scenarios such as external thermal insulation system (ETICS) and tile grout.

### IV. Acrylic copolymer (Acrylic) latex powder

1. **Composition and characteristics**:

- It is copolymerized with acrylic acid and its esters as the main monomers, and has excellent UV resistance and weather resistance.

- Acrylic latex powder has good flexibility, water resistance and alkali resistance.

2. **Application**:

- It is widely used in decorative mortar, exterior wall coatings and waterproof coatings.

- It is suitable for building materials that require high weather resistance and anti-pollution performance, such as exterior wall coatings and high-end decorative mortars.

### V. Styrene-acrylate copolymer (SA) latex powder

1. **Composition and characteristics**:

- It is copolymerized with styrene and acrylate, and has excellent water resistance, alkali resistance and weather resistance.

- SA latex powder has high strength, high adhesion and good flexibility.

2. **Application**:

- Suitable for high-performance adhesives, flexible waterproof coatings and high-demand mortars.

- Commonly used in high-demand scenarios such as tile adhesives, insulation system bonding mortars and repair mortars.

### Conclusion

RDP latex powder can be divided into many types according to its chemical composition and characteristics, including ethylene-vinyl acetate copolymer (EVA), ethylene-vinyl acetate-acrylic acid copolymer (VA/VEA), ethylene-vinyl acetate-styrene copolymer (VAE-S), acrylate copolymer (Acrylic) and styrene-acrylate copolymer (SA). These different types of RDP latex powder have their own advantages in the fields of construction, coatings and adhesives, and have a wide range of applications. Choosing the right type of RDP latex powder can achieve the best use effect according to specific application needs and performance requirements.