SK Chemicals 881 Impact Modifier

Features Of SK Chemicals 881 Impact Modifier

1. Excellent mechanical properties, good elastic modulus and tensile strength, maintaining stable elasticity under dynamic stress with outstanding structural toughness

2. Superior weather and aging resistance, resistant to UV, oxygen and humidity erosion, with long-term stable performance in outdoor and complex environments

3. High thermal stability, retaining good mechanical properties at high temperatures, suitable for various high-temperature processing technologies

4. Excellent processability, good melt fluidity and mold fillability, enabling easy molding of complex-shaped products with high production efficiency

5. Significant toughening effect, greatly improving toughness and wear resistance without affecting other properties of substrates, extending product service life

6. Wide adaptability, blendable with various rubber and plastic materials, eco-friendly without harmful substances, suitable for civil and industrial scenarios

Typical Applications Of SK Chemicals 881 Impact Modifier

1. Wires & Cables: Insulation and sheathing materials, with good electrical insulation and heat resistance, ensuring wiring safety and durability

2. Shoe Manufacturing: Soles and insoles, excellent elasticity and wear resistance, providing comfortable wearing experience and good support

3. PP Modification: Special toughener, improving the high/low temperature impact strength of PP, suitable for automotive bumpers, home appliance shells after modification

4. Foamed Products: Foamed with EVA to produce lightweight, high-resilience and good-touch foamed products such as beach shoes, slippers and sports shoe midsoles

Specifications Of SK Chemicals 881 Impact Modifier

SK Chemicals 881 Impact Modifier – Frequently Asked Questions (FAQ)

Q1: What is the primary polymer matrix compatibility of SK Chemicals 881?

A: SK Chemicals 881 is specifically engineered for use in rigid PVC formulations, where it enhances impact resistance without compromising stiffness or thermal stability. It demonstrates good compatibility with standard PVC resins and common stabilizer systems used in extrusion and injection molding applications.

Q2: How does SK Chemicals 881 affect processing behavior during extrusion or calendering?

A: SK Chemicals 881 typically supports smooth melt flow and contributes to stable extrusion performance in rigid PVC profiles and sheets. It does not significantly increase melt viscosity and generally maintains good die swell control and surface finish when incorporated at recommended dosage levels.

Q3: Is SK Chemicals 881 suitable for applications requiring weather resistance or long-term outdoor exposure?

A: Yes — SK Chemicals 881 is formulated to support excellent retention of impact strength after UV exposure and thermal aging in rigid PVC compounds. Its structure helps maintain toughness in window profiles, siding, and other exterior building products exposed to cyclic environmental stress.

Q4: What is the typical dosage range for optimal impact modification in rigid PVC?

A: SK Chemicals 881 is typically used at low concentrations, generally ranging from 0.1% to 2% by weight relative to the PVC resin, depending on the desired balance between impact performance, rigidity, and processability. Optimal dosage should be determined through application-specific formulation trials.