Originally Posted by
Eric F
I missed what Marrow said because I didn't look. I'm still pretty sure that crabon fibur won't rust.
”Rust” is just another name for degradation. Or, more technically, a change in state of a material. All of the materials discussed above can undergo changes in state that causes a change in properties. Those changes are
usually for the worse. No, carbon fiber can’t form iron oxide. But the epoxy resin in the carbon fiber matrix can undergo changes that are just as devastating to the properties of the material as rust is to iron.
EDIT: I finally got a chance to watch the video. It seems that Morrow's short comments about paint were related to clear coat over raw CF, not pigmented paint.
Pigment won’t make much difference. It doesn’t matter if the paint is red, black, yellow, or colorless*, it is the polymer that makes up the paint, not what was put in it, that provides the protection. And that polymer is just as susceptible to degradation with or without the pigment.
*”Colorless” is the proper term, not “clear”. Colorless is lacking in color. A substance can be clear…lacking in particles that cause light scattering…and colorless…lacking in color…or it could be brown and clear…i.e. lacking in particles that scatter light. Tea (without milk) is an example of a clear, colored solution. Water is an example of a clear and colorless liquid and milk is an example of a colorless but cloudy liquid.