Lead salt stabilizers: Cost-effective traditional heat stabilizers for PVC, preventing high-temperature degradation.
Core Function:
Prevent PVC degradation during high-temperature processing
Neutralize harmful byproducts of PVC decomposition
Key Advantages:
High cost-effectiveness
Strong long-term thermal stability
Good compatibility with PVC
Lead salt stabilizers are traditional, cost-effective heat stabilizers widely used in PVC processing (primarily for rigid PVC products). They excel at preventing PVC degradation during high-temperature processes (e.g., extrusion, injection molding) by neutralizing harmful byproducts of PVC decomposition. Key benefits include strong long-term thermal stability, low cost, and good compatibility with PVC formulations. Note: Due to environmental and regulatory restrictions (e.g., in the EU and North America), their use is limited in some regions, but they remain a practical choice in areas where they are compliant.
| Parameter/Characteristic | Description |
|---|---|
| Product Category | Lead Salt Stabilizers (PVC Heat Stabilizers) |
| Common Models | 1. Tribasic Lead Sulfate (TLS)2. Dibasic Lead Stearate (DLS)3. Tribasic Lead Phthalate (TLP) |
| Applicable PVC Type | Mainly rigid PVC; semi-rigid PVC (limited applications) |
| Applicable Processes | Extrusion, Injection Molding, Calendering (PVC processing) |
| Appearance | White/yellowish fine powder/granules |
| Typical Thermal Stability Temp | 180–200°C (compatible with high-temperature PVC processing) |
| Recommended Addition Level | 2–5% (based on PVC resin weight; varies by model and application) |
| Key Advantages | – High cost-effectiveness (low material cost)- Excellent long-term thermal stability- Good compatibility with PVC formulations- Enhances PVC processing fluidity |
| Regulatory Notes | Restricted in regions with strict environmental standards (e.g., EU, North America) |
| Typical Applications | – Rigid PVC building profiles (windows/doors)- PVC drainage/water supply pipes- Rigid PVC industrial sheets- PVC cable jacketing (in compliant regions) |
| Packaging | 25 kg/bag (moisture-proof kraft paper bag with inner liner) |
| Storage Conditions | Store in a cool, dry, well-ventilated area; avoid moisture and direct sunlight |
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