
High-performance PTFE marine grease with superior water displacement and corrosion protection
HydroForce is formulated for marine deck machinery, winches, and exposed outdoor equipment. Its calcium sulfonate complex thickener provides inherent water resistance and corrosion protection, enhanced by hydrophobic fumed silica for superior moisture barrier performance. The PTFE micro-particles create a durable, water-displacing lubrication film that resists washout even under direct saltwater spray. A high-performance aminic/phenolic dual antioxidant package delivers excellent oxidation stability for extended service intervals. Enhanced with zinc-based anti-corrosion agents for maximum protection against galvanic and atmospheric corrosion.
Temp Range
-30°C — 180°C
PTFE Content
18%
Base Oil
PAO/Mineral Oil Blend (Group III)
NLGI Grade
2
Batch size: 1kg — Detailed formulation and step-by-step process
| Ingredient | % | Grams | Role |
|---|---|---|---|
| PAO 6 Synthetic Base Oil | 28% | 280g | Primary base lubricant — high VI synthetic for wide temperature range |
| Group III Mineral Base Oil (150N) | 16% | 160g | Co-base lubricant — improves additive solubility |
| Calcium Sulfonate Complex Thickener | 14% | 140g | Thickener with inherent corrosion protection and water resistance |
| PTFE Micro-powder (3μm) | 18% | 180g | Solid lubricant — maintains lubrication in wet/submerged conditions |
| Hydrophobic Fumed Silica | 4% | 40g | Moisture barrier reinforcement — upgrades water resistance to superior level |
| Calcium Carbonate (calcite) | 4% | 40g | Reinforcing filler and acid neutralizer |
| Polyisobutylene (PIB) Tackifier | 4% | 40g | Adhesion promoter — prevents grease throw-off and migration |
| Zinc Dithiophosphate (ZDDP) | 3% | 30g | Anti-wear and anti-corrosion additive |
| Lanolin-based Water Displacing Agent | 2% | 20g | Actively displaces water from metal surfaces |
| Diphenylamine Antioxidant | 1.5% | 15g | Primary aminic antioxidant — radical scavenger for long-term protection |
| Hindered Phenol Antioxidant (BHT) | 1.5% | 15g | Secondary phenolic antioxidant — synergistic with aminic for excellent oxidation stability |
| Petroleum Sulfonate Emulsifier | 2% | 20g | Enhances water tolerance and emulsion stability |
| Silicone Anti-foam Agent | 2% | 20g | Prevents foam in water-contaminated conditions |
Combine PAO 6 synthetic oil and Group III mineral oil in a clean stainless steel vessel. Heat to 80°C. The PAO/mineral blend provides a wide operating temperature range (-30°C to 180°C) while maintaining good additive solubility.
Add overbased calcium sulfonate slowly while stirring at 600 RPM. Add calcium carbonate to promote complex formation. The calcium sulfonate complex provides the drop point exceeding 310°C.
Heat to conversion temperature. The amorphous calcium carbonate crystallizes into calcite, strengthening the thickener matrix. Add small amount of water (50ml) to promote crystallization. Hold until all water evaporates and structure is established.
Cool to 120°C. Add PTFE micro-powder gradually while increasing mixer speed to 1200 RPM. Once dispersed, add hydrophobic fumed silica — this critical addition elevates water resistance from excellent to superior by creating a hydrophobic barrier throughout the grease matrix.
At 100°C, add diphenylamine and hindered phenol antioxidants (dual system provides excellent oxidation stability through synergistic radical scavenging). Then add ZDDP, lanolin water displacer, emulsifier, and anti-foam. Finally, add PIB tackifier.
Mill through a three-roll mill twice (0.03mm, 0.01mm gaps). Perform water spray test: apply grease to a steel plate, spray with saltwater for 10 minutes — grease should not wash off. Also perform 24-hour immersion test.
Test penetration, drop point (>310°C), water washout (<0.5%), salt spray corrosion (>750 hrs), four-ball wear (<0.45 mm), and oxidation stability. Package in sealed tubes or cartridges suitable for marine environments.