Custom Polyurethane Coating Formulations
Long-Term Protection
Polyurethane coatings are widely used for exterior protection, delivering durability, corrosion resistance, and long-term gloss retention. They withstand harsh environments, including the intense sun and humidity of South Florida, while maintaining color and flexibility. Though often paired with primers, some polyurethanes are formulated for direct-to-metal (DTM) use.
2K Polyurethanes = Durability
Two-component polyurethanes are available in both water- and solvent-based systems. They combine Part A (an acrylic, polyester, or polycarbonate resin) with Part B (a catalyst or hardener).
The chemical reaction that occurs when components A and B are mixed is called crosslinking, defined as the process of joining two polymer systems to form a strong molecular structure through covalent bonds. This bond is stronger and more durable than in one-component (1K) systems, giving two-component polyurethanes superior strength and performance.
Uses
Carbit’s 2K Polyurethanes are engineered for durability across a wide range of applications, including:
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Metal furniture, lockers, doors, and fasteners
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Computers and electronic enclosures
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Advertising and retail displays
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Medical equipment and devices
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Material handling equipment
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Agricultural, transportation, and construction equipment
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Heavy equipment and machinery
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Gearboxes and actuators
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Hydraulic lifts and cylinders
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Shopping carts and high-use consumer items
Environments
Designed to perform in the toughest conditions, Carbit’s 2K Polyurethanes deliver superior protection in:
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Exterior and severe interior environments
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High-traffic interior areas
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Light industrial settings with mild chemicals or damp conditions
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Harsh environments with high abrasion, impact, intense UV, frequent wet cycles, or thermal fluctuations
Application
2K polyurethanes, once catalyzed, apply like other liquid coatings of normal viscosity. Application is typically done by all methods of air spray, including conventional, airless, and electrostatic. Small quantities can be mixed volumetrically by hand in cup guns or pressure pots. Unused material will gel and become unusable, so only mix what can be applied within the coating’s pot life as specified in its product data sheet (PDS). Higher-volume or continuous applications require plural-component mixing and metering equipment, which precisely combine the A and B components at the spray gun. This accurate mixing not only improves color and coating consistency but also eliminates the issues associated with small-batch mixing, including limited pot life.
Once applied, 2K polyurethanes are often cured in a low-temperature force-dry oven, which accelerates the drying process. For parts too large for an oven, the polyurethane can air dry at normal temperature and still achieve the same performance properties as if it were force-dried.
Carbit Supplies and Serves Industrial Paint Lines:
- Custom Coatings: Specifications, design, formulation, and manufacturing
- Process Improvement: Consulting for paint lines
- Paint Line Support: Audits and painter training
- Lab Services: Testing and reporting, plus surface prep, cleaners, and rust inhibitors
- Technical Field Reps: Training, audits, lab coordination
- Lab Team: Testing, custom formulations, QC, and color matching
- Customer Service & Production: On-time delivery
- Managers & Teams: Continuous improvement and relationship development
FAQs
Choosing the right polyurethane coating often depends on your application, environment, and long-term performance requirements. Our FAQs provide helpful insights to consider when evaluating coating options for your products or finishing process. If you don't find the answer you're looking for, fill out our form or contact one of our coating specialists at (312) 280-2300.
We're happy to discuss your application, durability requirements, and finishing process to help you identify the right polyurethane coating solution.
Yes. Polyurethane coatings are available in both one-component (1K) and two-component (2K) systems. 2K acrylic polyurethanes are widely used as high-performance industrial finishes because they provide excellent durability, chemical resistance, and color retention. Aliphatic polyurethanes are commonly used for exterior applications due to their superior UV stability.
Color changes should follow a written standard operating procedure (SOP) for cleaning equipment and spray systems between colors. Procedures vary depending on whether liquid or powder coatings are used.
To minimize contamination, many finishing operations schedule lighter colors before darker ones and verify color against the standard using the same substrate, film thickness, gloss level, and lighting conditions.
- A one-component (1K) coating cures through oxidation or evaporation and does not require mixing multiple components. While easier to use, 1K coatings generally provide lower chemical and mechanical resistance than 2K systems.
- A two-component (2K) coating is supplied in two parts that are mixed before application. This chemical reaction creates strong crosslinking, producing a very durable coating often used in high-performance environments.
Consult Our Experts
Have Questions?We design and manufacture environmentally friendly liquid coatings tailored to your finishing process and performance requirements. Our Technical Service Team manages your project from start to finish, addressing immediate needs while also focusing on your long-term goals. We demonstrate how our products align with your application and performance standards, then provide on-site training and ongoing support.
Need immediate assistance? Call us at
(312) 280-2300