Introduction
ESD safe coatings are materials with low conductivity that effectively prevent the buildup of static charge along surfaces. While not conductive enough for applications like EMI/RFI shielding, grounding or trace repair, these coatings can dissipate charge buildup, preventing sudden discharges like arcing which can damage PCBs. Besides circuits, these coatings can be used on surfaces that need to remain static-free such as tooling, tables, carts and monitors. This guide explains the need for ESD safe coatings, including their main features, applications and instructions for use. To learn more about MG Chemicals’ innovative ESD safe coating solutions, click here.
What are ESD Safe Coatings?
An ESD safe coating is a material whose resistivity falls within the range of 107 to 109 Ω cm, well above that of a conductive material used for EMI/RFI shielding or trace repair but with sufficient conductivity to prevent charge buildup along insulating surfaces such as plastics, glass and composites.
Key Properties:
- Adhesion: Bonds to many surfaces including plastics, glass, composites and ceramics
- Humidity Independent: Maintains static dissipation even in low humidity
- HAPs Free: Does not contain xylene or toluene
Top Applications of ESD Safe Coatings
- Assembly Stations for Electronics – Can be applied onto carts, bins and trays used in electronic assembly. This prevents discharge that can damage electronics.
- Electronic Packaging – ESD safe coatings can be applied to packaging that houses sensitive electronics, preventing buildup of static charge from friction.
- Work Enclosures for Electronic Assembly – Can be applied on highly insulating surfaces such as plexiglass to prevent static buildup.
Advantages of ESD Safe Coatings
- Permanent – These coatings permanently bond to surfaces and do not lose conductivity over time.
- Humidity Independent – Surfaces coated with ESD safe coatings remain conductive regardless of the external humidity.
How to Apply Conductive Epoxy Paints
1. Surface Preparation
- Clean the surface thoroughly to remove dust, oils, or debris.
- Some substrates such as polyolefins may require use a primer to improve adhesion.
2. Application Methods
- Brush-On: Ideal for small areas or detailed work.
- Manual Spray: Provides uniform coverage for larger surfaces with minimal setup or expertise required.
- Automated Spray: Ideal where high throughput is required, negates the need for masking.
3. Drying and Curing
- Please refer to the product technical data sheet for information on how to properly cure the coating.
4. Testing Conductivity
- Use a multimeter to verify electrical performance and ensure the desired conductivity is achieved.
Tips for Optimal Results
- Apply in thin, even layers for consistent conductivity.
- Avoid common mistakes like insufficient surface preparation or applying overly thick coats.
MG Chemicals’ Conductive Paints for Board Level Shielding
MG Chemicals offers an ESD safe coating available in both liquid and aerosol format.
Acrylic
- 844AR – ESD Safe Coating for Plastic – a single-component acrylic ESD safe coating with an off-white finish. The coating is highly durable and bonds well to many plastics. Available in liquid and aerosol packaging.
Why Choose MG Chemicals?
- Industry Leadership: With 70 years of experience, MG Chemicals is a trusted name in the electronics industry, specializing in high-quality chemical products.
- Comprehensive Product Line: A wide range of conductive paints designed to meet diverse application needs, from DIY projects to industrial solutions.
- Global Availability: MG Chemicals products are distributed worldwide, ensuring easy access for customers across North America, Europe, Asia, and beyond.
- Exceptional Support: Dedicated technical and customer service teams offer personalized assistance and expert guidance to ensure successful outcomes.
- Commitment to Innovation: Continuous investment in research and development drives the creation of advanced, reliable solutions tailored to industry needs.
Conclusion
ESD safe coatings are an easy way to ensure electronics do not fail from static charge buildup. Explore MG Chemicals’ ESD safe coatings to find the perfect solution for your project.
Contact us today or visit our ESD safe coatings product page to learn more!
