Pour Point Depressant
Pour Point Depressant
Pour point depressant (PPD) is critical additives that improve low-temperature fluidity by modifying wax crystal structures. Key functions include:
- Significant Pour Point Reduction: Lowers the pour point of 0# diesel to -35°C (ASTM D97).
- Optimized Low-Temperature Pumpability: Ensures -40°C MRV viscosity ≤20,000 cP (ASTM D4684).
- Wax Crystal Inhibition: Restricts wax crystal size to ≤5 μm (observed via polarized light microscopy).
- Synergistic Effects: Collaborates with viscosity modifiers to maintain viscosity-temperature characteristics.
Included Products
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Wind Farms in Wales
Classification:
- Specifications
Product | Application |
Fumarate Ester PPD (T818A, T818C, T818H) | Multi-grade engine oils, gear oils, hydraulic fluids, industrial lubricants, Arctic expedition equipment oils. |
Polymethacrylate PPD (T819/T848) |
- Application Fields
NEV Cold Starts: Maintains fluidity of battery coolants at -40°C (Tesla TSL-015 certification).
Wind Turbine Gearboxes: Ensures operation in -45°C extreme cold (GL certification).
Aircraft Hydraulic Fluids: Guarantees stability at high-altitude low temperatures (MIL-PRF-5606H standard).
Biodiesel: Prevents crystallization of fatty acid methyl esters (EN 14214 certification).
- Key Performance Parameters
Parameter | Specification Range | Test Method |
Pour Point Reduction (°C) | ≥25 | GB/T 3535 |
Cold Filter Plugging Point (°C) | ≤-30 | SH/T 0248 |
Low-Temperature Kinematic Viscosity (-35°C, cP) | ≤15,000 | ASTM D5293 |
Wax Crystal Inhibition Rate (%) | ≥85 | ISO 3016 |
- Scientific Formulation
Golden Ratio Formula for PPD Dosage:
PPD dosage (%) = (Base oil wax content % × 0.2) + (Target pour point difference °C × 0.05)
Operational Guidelines:
Addition Temperature: Must exceed base oil cloud point +10°C.
Timing: Add at least 15 minutes after detergent addition.
Mixing Prohibition: Avoid direct mixing with high-alkaline additives.
Storage: Protect from light and moisture (humidity <40% RH).