Pure epoxy primer powder MT Plus -AL117N
WA：+86 132 6275 2056
WEB: std-coatings.com
1. Typical Coating System Recommendation
MT Plus-AL117N is designed as a corrosion-control primer within multi-layer protective coating systems. When applied on properly prepared substrates, it provides a dense, high cross-linked barrier layer that significantly enhances system durability.
Recommended coating system example:
Substrate
Abrasive blast-cleaned carbon steel, or properly pre-treated galvanized steel
Primer
Pure Epoxy Primer Powder MT Plus-AL117N
Dry film thickness:60–80 μm
Intermediate / Topcoat options
Polyester powder coating for general outdoor industrial exposure
Super-durable polyester powder coating for architectural and infrastructure use
Polyurethane liquid topcoat where enhanced chemical resistance or specific aesthetic requirements apply
When correctly applied and combined with suitable topcoats, this coating system can achieve corrosion protection levels up toISO 12944 corrosion categories C3–C4. depending on surface preparation quality, total film build, and service environment.
2. Over-Coating Compatibility & Over-Coating Window
MT Plus-AL117N offers excellent intercoat adhesion and broad compatibility with commonly used topcoat technologies.
Compatible topcoats include:
Epoxy powder coatings
Polyester and super-durable polyester powder coatings
Approved polyurethane liquid topcoats
Recommended over-coating interval:
Up to3 weekswhen stored under clean, dry, indoor conditions
During this period, the primer surface should remain free from dust, grease, moisture, and other contaminants
If the over-coating interval is exceeded, light surface activation (such as gentle sweep blasting or mechanical abrasion) may be required to restore optimal intercoat adhesion.
3. Application Notes from Practical Experience
For consistent performance in industrial production, the following application considerations are recommended:
Film thickness control
Maintain the specified 60–80 μm range to ensure optimal barrier performance and avoid potential defects related to excessive film build
Electrostatic spraying efficiency
Proper grounding of the workpiece improves powder transfer efficiency, edge coverage, and coating uniformity
Zinc-sprayed substrates
Excessive surface roughness should be avoided, as overly coarse profiles can lead to unnecessary powder consumption without improving protection
Curing control
Uniform curing is essential to achieve full cross-linking, ensuring mechanical integrity and long-term corrosion resistance
4. Limitations & Use Boundaries
To ensure correct system design, the following limitations should be considered:
This epoxy primer isnot UV-resistantand isnot intended for direct outdoor exposurewithout a suitable topcoat
It isnot recommended as a single-coat protective system
Long-term performance depends heavily on correct surface preparation, controlled application, and appropriate topcoat selection
5. Typical Industries & Project Applications
MT Plus-AL117N is widely used in corrosion-critical applications where system reliability is prioritized over decorative appearance:
Industrial machinery and equipment frames
Steel structures for warehouses, logistics centers, and manufacturing plants
Infrastructure components requiring duplex coating systems
Aluminium and galvanized steel parts used in architectural assemblies and industrial constructions
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