ACR (Acrylic Copolymer) is an indispensable high-efficiency processing aid in PVC manufacturing, primarily functioning through the following mechanisms:

1. Promoting Plasticization

• Enhances melt strength through intermolecular entanglement, preventing melt fracture

• Accelerates plasticization process (reduces time by 30-50% and temperature by 5-15°C)

• Improves melt homogeneity by facilitating dispersion and fusion of components

2. Improving Processing Performance

• Increases extrusion stability (reduces torque fluctuations and allows 20-40% higher speed)

• Enhances melt elasticity for better die swell control and dimensional stability

• Reduces exudation tendency of additives

3. Enhancing Product Quality

• Improves surface gloss (eliminates defects like shark skin, increases gloss by 20-50%)

• Boosts mechanical properties (enhances impact strength, especially low-temperature toughness)

• Optimizes appearance (reduces flow marks and bubbles)

4. Application Advantages

• Excellent compatibility with PVC without affecting transparency

• Dual functions as both processing aid and impact modifier

• Environmentally friendly and compliant with food contact requirements

5. Usage Recommendations

• Typical dosage: 1-3 phr (adjustable based on product requirements)

• Exhibits good synergy with lubricants and stabilizers

• Particularly suitable for rigid PVC profiles, pipes, and similar products

Through its unique molecular design, ACR plays an irreplaceable role in improving PVC processing performance and product quality, making it one of the most critical additives in modern PVC processing.

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