
Heavy-duty PTFE grease with enhanced load capacity for 260-290°C environments
TitanHeat combines a perfluoropolyether (PFPE) base oil with a high-concentration PTFE dispersion for environments demanding both extreme temperature resistance and heavy load carrying capacity. The polyurea thickener eliminates metallic soap limitations, offering exceptional shear stability. Designed for steel mill bearings, cement kiln applications, and heavy industrial equipment operating at sustained high temperatures.
Temp Range
260°C — 290°C
PTFE Content
22%
Base Oil
PFPE (Perfluoropolyether)
NLGI Grade
2
Batch size: 1kg — Detailed formulation and step-by-step process
| Ingredient | % | Grams | Role |
|---|---|---|---|
| PFPE Base Oil (Fomblin Y) | 45% | 450g | Base lubricant - fluorinated oil with extreme thermal stability |
| Polyurea Thickener | 12% | 120g | Non-soap thickener - superior thermal and shear stability |
| PTFE Micro-powder (3μm) | 22% | 220g | Solid lubricant - primary friction reducer and load bearer |
| Molybdenum Disulfide (MoS2) | 5% | 50g | Backup solid lubricant for extreme pressure conditions |
| MDI (Methylene Diphenyl Diisocyanate) | 6% | 60g | Polyurea precursor - reacts with amines to form thickener |
| Octadecylamine | 4% | 40g | Polyurea precursor - forms urea linkage with MDI |
| Phenolic Anti-oxidant (BHT) | 2% | 20g | Primary antioxidant - radical scavenger |
| Sulfurized EP Additive | 2.5% | 25g | Extreme pressure protection under shock loads |
| Benzotriazole Copper Passivator | 0.5% | 5g | Prevents copper corrosion in bronze bearings |
| Anti-foam Agent | 1% | 10g | Controls air entrainment |
Heat PFPE base oil (Fomblin Y or equivalent) in a chemically inert vessel (PTFE-lined or glass). PFPE oils require careful handling - use only fluoropolymer-compatible seals and gaskets.
Dissolve octadecylamine in half the PFPE oil at 70°C. Separately, dissolve MDI in the remaining PFPE oil at 50°C. Slowly combine the two solutions under vigorous agitation (1200 RPM). Exothermic reaction will occur - monitor temperature carefully.
Heat the polyurea-PFPE mixture to drive the reaction to completion and develop the thickener structure. Maintain constant stirring. The mixture should develop a smooth, creamy consistency.
Cool to 140°C. Pre-blend PTFE micro-powder with MoS2 in a dry container. Add the dry blend slowly to the grease while agitating at 1500+ RPM. Continue mixing until fully homogeneous - approximately 15 passes through the high-shear zone.
Cool to 110°C and add phenolic antioxidant, EP additive, copper passivator, and anti-foam agent. Mix each additive thoroughly for 5 minutes before adding the next.
Pass through a three-roll mill at tight clearances (0.02mm final gap) for ultra-smooth texture. Then deaerate under mild vacuum (500 mbar) for 15 minutes to remove trapped air.
Perform full QC testing: penetration, drop point, EP testing, and oxidation stability. Package in steel containers with nitrogen blanket to prevent oxidation during storage.
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