PVC Foaming Regulator is a type of acrylic-based processing aid specifically designed to enhance the melt strength and foaming quality in foamed PVC products. It plays a key role in cell structure control, surface finish, and dimensional stability in lightweight PVC formulations.
| Property | Typical Value |
|---|---|
| Appearance | White free-flowing powder |
| Bulk Density | 0.45 – 0.55 g/cm³ |
| Volatile Matter | ≤ 1.5% |
| Intrinsic Viscosity | 10 – 14 |
| Particle Size | ≥ 98% through 30 mesh |
| Issue | Foaming Regulator Solution |
|---|---|
| Unstable foam structure | Provides stronger melt strength and uniform foam |
| Rough surface finish | Enhances smoothness and gloss |
| Low output in extrusion | Improves processability and reduces friction |
| Collapsing during cooling | Maintains dimensional stability in cooling phase |
Q1: What is the recommended dosage?
Typical dosage is 1.0 – 2.5 phr depending on foam density and line speed.
Q2: Can it be used together with blowing agents?
Yes, it works in synergy with AC or OBSH-based chemical blowing agents.
Q3: Will it affect the final color?
No, it is colorless and does not impact pigmentation or brightness.
