Английская Википедия:Composite epoxy material

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Шаблон:More citations needed 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 as CEM-3 but not flame-retardant.
  • CEM-5 (also called CRM-5) has polyester woven glass core.[6]

See also

References

Шаблон:Reflist


Шаблон:Material-stub