Polyurethane coating
Polyurethane coating is a type of Conforme coating widely used in electronics to protect printed circuit boards during PCB-assemblage en SMT-assemblage. It is known for its excellent chemical resistance, durability, and strong protective properties, making it ideal for harsh operating environments.
What is polyurethane Conforme coating
Polyurethane Conforme coating (also called urethane coating) is a polymer-based protective layer applied to PCBs. Once cured, it forms a tough, durable film that adheres well to components and circuit surfaces, providing long-lasting protection against environmental stress.
Compared to other coating types, polyurethane offers a balance between flexibility and hardness, allowing it to resist both physical wear and chemical exposure.
Key properties of polyurethane coating
Excellent chemical resistance
Polyurethane Conforme coating provides strong protection against solvents, fuels, oils, and corrosive chemicals. This makes it highly suitable for industrial and automotive PCB-assemblage applications.
High abrasion resistance
The coating forms a tough surface that resists scratches and mechanical wear, helping protect components in environments with vibration or physical stress.
Good moisture protection
It acts as an effective barrier against humidity and water, reducing the risk of corrosion and electrical failure in SMT-assemblage products.
Strong adhesion
Polyurethane coatings bond well to a variety of materials, ensuring reliable coverage and long-term stability.
Advantages in PCB-assemblage en SMT-assemblage
Polyurethane coating is commonly used when durability and environmental resistance are top priorities. Its benefits include:
- Long-lasting protection in harsh environments
- Resistance to chemicals and contaminants
- Improved reliability of electronic assemblies
- Suitability for outdoor and industrial applications
Limitations to consider
Moeilijk te verwijderen
One of the main drawbacks of polyurethane Conforme coating is that it is harder to rework or remove compared to acrylic coatings. Specialized solvents or processes are often required.
Longer curing time
Some polyurethane coatings may require longer curing times, which can affect production efficiency in PCB-assemblage.
Less flexibility than silicone
While durable, polyurethane is not as flexible as silicone coatings, which may be a consideration in applications with extreme temperature cycling.
Typical applications
Polyurethane Conforme coating is widely used in:
- Automobielelektronica
- Industriële besturingssystemen
- Voedingen en converters
- Outdoor electronic equipment
These applications often require high resistance to chemicals, moisture, and mechanical stress.
Conclusie
Polyurethane coating is a high-performance Conforme coating that provides excellent chemical, moisture, and mechanical protection for electronic assemblies. In PCB-assemblage en SMT-assemblage, it is a preferred choice for demanding environments where durability and reliability are critical, despite its more challenging rework process.
Vraag een offerte aan voor conforme coating
Get expert advice and pricing for your conformal coating needs today.
Send us your requirements and get a fast response from our engineering team.
✔ 24-hour response ✔ Engineering support ✔ Small & Mass Production
Shenzhen Tengxinjie Electronics Co, Ltd.
Nederlands 
English 
Deutsch 
Français 
Português do Brasil 
Español 
日本語 
Italiano 
Русский 
한국어 
العربية 
Svenska 
Polski 
Türkçe 
繁體中文