ACR Impact Modifier Product Overview

📝 Product Overview

ACR Impact Modifier (Acrylic Impact Modifier) is a high-performance core-shell copolymer designed to significantly enhance the impact strength and processing characteristics of rigid Polyvinyl Chloride (PVC) products. It is typically based on an acrylate polymer core and a methyl methacrylate shell.

As a premium modifier, ACR is superior to traditional CPE in providing excellent weather resistance, high surface gloss, and exceptional impact strength at both room and low temperatures. Its core-shell structure allows for uniform dispersion in the PVC matrix, ensuring that the finished products can withstand heavy mechanical stress and environmental exposure without becoming brittle.

🔬 Key Specifications

• Appearance: White, free-flowing powder
• Sieve Residue (30 mesh): $\le 2.0\mathrm{\%}$
• Volatiles: $\le 1.0\mathrm{\%}$
• Apparent Density: $0.40-0.55{\text{ g/cm}}^3$
• Viscosity-average Molecular Weight: High
• Glass Transition Temperature ($T_g$): Optimized for impact performance
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🚀 Application Areas

ACR is the industry standard for high-end rigid PVC products where aesthetic quality and durability are non-negotiable.

① PVC Window Profiles and Doors: ACR is essential for producing high-quality window frames and door profiles. It ensures that the profiles remain impact-resistant and white (anti-yellowing) even after decades of exposure to intense UV light and fluctuating temperatures.

② Rigid PVC Pipes and Fittings: In the manufacturing of pressure pipes, drainage pipes, and fittings, ACR improves the fracture toughness of the material. This prevents cracking during transportation, installation, and long-term underground use.

③ PVC Sheets and Foam Boards: Used in architectural decorative boards and foam sheets to provide a smooth surface finish and better mechanical properties, making the boards easier to cut and process without chipping.

④ Outdoor Siding and Fencing: ACR is used in residential siding and fencing to provide long-term weatherability and color stability, ensuring the products look new for many years despite outdoor exposure.

⑤ Injection Molded Parts: Applied in various high-impact PVC injection molded components such as electrical junction boxes and industrial parts, providing a balance of rigidity and toughness.

📦 Packaging and Storage

• Packaging: Typically supplied in 25 kg plastic woven bags or craft paper bags with a moisture-proof inner PE liner.
• Storage: Store in a cool, dry, and well-ventilated warehouse. Keep away from heat sources and direct sunlight. To prevent caking, avoid stacking pallets too high under high-temperature conditions.
• Shelf Life: 24 months under standard storage conditions.