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The choice between oil-based and water-based aluminium paste plays a critical role in coating performance, durability, and formulation stability. Whether used in automotive paints, industrial coatings, or protective finishes, selecting the right type ensures better metallic effect, corrosion resistance, and long-term stability.
This article provides a clear, expert-level comparison suitable for manufacturers, formulators, and end-users.
Aluminium paste is made from metallic aluminum flakes dispersed in a solvent or water medium.
Its behavior, stability, and visual effect differ significantly depending on whether it is formulated for:
Oil-based coatings
Water-based coatings
Understanding these differences ensures better product design and coating performance.
Dispersed in mineral oil, solvent, or hydrocarbon carrier
Strong metallic gloss and high reflection
Good compatibility with solvent-based resins
Easier dispersion and formulation
Traditionally used in automotive and industrial metallic coatings
Excellent brightness and mirror effect
Stable in solvent environments
Wide variety of flake shapes (cornflake, silver-dollar, vacuum-metallic)
Cost-effective
Automotive refinish coatings
Wheel paints
Industrial metallic paints
Anti-corrosion coatings
Plastic coatings
Ink formulations
Water-based aluminium paste must be specially processed to avoid chemical reactions between raw aluminum and water.
Flakes are coated using silica (SiO₂), resin, or special polymer film
High resistance to gas generation and corrosion
Designed for stability in neutral and alkaline systems
More environmentally friendly
Excellent resistance to water and humidity
Low VOC and eco-compliant
Suitable for architectural coatings and eco-friendly finishes
Stable metallic effect without hydrogen generation
Water-based industrial metallic coatings
Exterior architectural coatings
Waterborne inks
Low-VOC automotive interior paints
| Feature | Oil-Based Aluminium Paste | Water-Based Aluminium Paste |
|---|---|---|
| Carrier | Solvent, mineral oil | Water system |
| Stability | High in solvent | Needs special coating (SiO₂/resin) |
| Gloss | Strong metallic shine | Softer metallic effect |
| Eco Compliance | Higher VOC | Low VOC / eco-friendly |
| Chemical Reaction Risk | None | Possible without special treatment |
| Best Use | Automotive & industry | Architectural & eco coatings |
Choosing the right aluminium paste depends on system requirements:
Water-based aluminium paste is preferred for low-VOC coatings.
Oil-based pastes deliver stronger brightness and reflective gloss.
Water-based aluminium paste requires surface treatment:
SiO₂ coated aluminium paste
Resin coated aluminium paste
Oil-based aluminium pastes are generally more affordable.
Water-based treated grades cost more but offer higher stability.
No. Untreated aluminum reacts with water and produces hydrogen gas. Only treated water-based aluminium paste can be used.
Oil-based aluminium paste typically provides stronger brightness.
Yes. It has lower VOC, reduced odor, and higher environmental compliance.
Yes, due to additional coating treatments needed for stability.
Selecting the right type of aluminium paste—oil-based or water-based—directly impacts coating performance, environmental compliance, and metallic appearance.
For high-performance aluminium paste solutions, Silver Rocket Metallic Pigment Co., Ltd. offers:
Resin-coated, SiO₂-coated, and standard aluminium pastes
Custom formulations for oil-based and water-based systems
Stable supply chain & competitive wholesale pricing
35+ years of metallic pigment expertise
Email: info@silverocket.com
Website: https://www.silverocket.com/