Sandvik Coromant Machining carbon fibre materials - Manual (Page 18)

Resin identification
Resin
Surface
Fibres
Colour
Epoxy resins •
- amber-brownish
Thermoplastics •
- in some cases blue
Shiny •
- Thermosetting (Epoxy)
Dull •
- Thermoplastic, BMI
Note: that carbon fibre composites can be layered with •
various type of fibres and glass layers, which can change
the apperance.
Geometry
Typically, most common composite materials, including fiberglass, carbon fiber, and kevlar,
include at least two parts, the substrate and the resin. Epoxy resin is almost totally transparent
when cured. In the aerospace industry, epoxy is used as a structural matrix material or as a
structural glue.
SANDVIK COROMANT USER’S GUIDE - COMPOSITE SOLUTIONS 18