Composite epoxy material
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Composite epoxy materials (CEM) are a group of composite materials typically made from woven glass fabric surfaces and non-woven glass core combined with epoxy synthetic resin.[1][2] They are typically used in printed circuit boards.[3]
There are different types of CEMs:
- CEM-1 is low-cost, flame-retardant, cellulose-paper-based laminate with only one layer of woven glass fabric.[4]
- CEM-2 has cellulose paper core and woven glass fabric surface.
- CEM-3 is very similar to the most commonly used PCB material, FR-4. Its color is white, and it is flame-retardant.[5]
- CEM-4 quite similar to CEM-3 but not flame-retardant.
- CEM-5 (also called CRM-5) has polyester woven glass core.[6]
See also
[edit]- Micarta – Brand name for a fabric-plastic composite
- Fibre-reinforced plastic – Composite material made of a polymer matrix reinforced with fibres
References
[edit]- ^ Inc, ANSYS. "Characterization of CEM-1 Boards". www.dfrsolutions.com. Retrieved 2022-01-20.
{{cite web}}:|last=has generic name (help) - ^ Andy (2023-05-02). "Composite Epoxy Material | What You Need to Know - FR Fabric". Retrieved 2023-07-20.
- ^ admin. "FR1-FR3, CEM1-CEM3,FR4, Aluminum Flex CCL introductions | PCB Blog". Retrieved 2022-01-20.
- ^ "Why Is Cem-1 PCB Material still Popular in the Circuit Board Market ?". Printed Circuit Board Manufacturing & PCB Assembly - KingShengPCBA. 2018-03-14. Retrieved 2022-01-20.
- ^ "CEM-1 PCB". Venture Electronics. Retrieved 2022-01-20.
- ^ PCB Directory Editorial Team (12 July 2019). "What are Composite Epoxy Materials (CEMs)?". PCB Directory. Archived from the original on 2022-01-20. Retrieved 20 January 2022.
{{cite web}}:|last=has generic name (help)
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