Acrylic Functional Impact Modifier
HM-50A HM-60
I. Introduction to Acrylic Functional Impact Modifiers
HM-50A and HM-60 are acrylic functional impact modifiers featuring a typical core-shell structure. They are polymer materials consisting of a cross-linked poly(butyl acrylate) core and an outer shell of polymethyl methacrylate (PMMA), which offers excellent compatibility with PVC. This structure enables the modifiers to effectively absorb and dissipate impact energy applied to rigid PVC products, making them particularly suitable for PVC applications requiring high impact resistance and weatherability.
These products are manufactured from acrylate monomers through a multi-stage emulsion polymerization process. They are free-flowing, white amorphous powders with excellent compatibility with PVC. Their granular form and uniform particle size help minimize dust pollution during production. As high-performance impact modifiers for PVC products, they provide outstanding impact resistance and low-temperature weatherability, making them particularly suitable for rigid and semi-rigid outdoor PVC applications. The products also offer good chemical stability, thermoplastic properties, and dispersion performance.
II. Product Advantages
● Excellent impact strength and tensile strength.
● Excellent processing performance.
● Increased rigidity of finished products.
● Excellent surface gloss for finished products.
● Good powder flowability.
● Excellent weather resistance.
III. Technical Specifications
Item | Test Standard | HM-50A | HM-60 |
Appearance | Visual Inspection | White Powder | White Powder |
Apparent Density (g/cm³) | GB/T 1636 | ≥0.3 | ≥0.3 |
Residue on 20-Mesh Sieve (%) | GB/T 21843 | ≤2.0 | ≤2.0 |
Volatile Matter (%) | GB/T 2914 | ≤1.5 | ≤1.5 |
Notched Izod Impact Strength (kJ/m²) | GB/T 1843 | ≥11.0 | ≥10.0 |
IV. Application Areas
This product is widely used in various PVC products, including PVC pipe fittings, pipes, PVC door and window profiles, PVC wall panels, PVC fences, and other applications.
Recommended Dosage: 4–10 parts per 100 parts of PVC resin powder. For detailed application guidance, please consult our technical service engineers.
V. Packaging and Storage
Available in 25 kg or 500 kg PP woven bags. Customized packaging is also available upon request.
Store in a cool and dry environment. The shelf life is 1 year. After this period, the product may still be used if it passes quality inspection.