Functional Additive (MBS) Resin M-531
I. Technical Description
M-531 impact-resistant MBS is a new type of PVC impact modifier developed by our company. It is a core-shell structured polymer belonging to the rubber elastomer family, designed to improve the impact strength of PVC products. Its outer shell consists of a methyl methacrylate-styrene copolymer, which offers excellent compatibility with PVC. It also enhances the melt strength and surface gloss of PVC materials.
II. Performance Specifications
Item | M-531 |
Resin Powder Specifications | Appearance | White Powder |
Density (g/cm³) | ≥0.30 |
Volatile Matter (%) | ≤1.0 |
Particle Size (Passing Rate Through 20-Mesh Sieve, %) | ≥98.0 |
PVC Blend Specifications | Notched Izod Impact Strength (kJ/m²) | ≥12.5 |
III. Performance Characteristics
1. High Impact Strength: Achieves the required impact strength of finished products with a relatively low addition level.
2. Low Die Swell: Helps ensure dimensional stability of finished products.
3. Excellent Processability: Provides a wider processing window while ensuring the required impact performance and delivering an excellent surface appearance.
IV. Applications
This product series is suitable for PVC pipes, pipe fittings, boards, sheets, and other PVC products to improve impact strength. The dosage depends on the specific product requirements and desired impact performance. The typical recommended dosage is 3–8 phr.