Talk Composites - The Forum for Advanced Composites

Oil & Fuel resistance

http://www.talkcomposites.com/Topic22675.aspx

By Flowboy - 1/27/2017 8:03:53 PM

Hi folks, 
new to the forum & have a couple of small projects in mind. One using Carbon Fibre & the other a resin casting

Re. the casting, I searched the forum for an answer without any luck...  How fuel & oil resistant are the various resins?. By that I mean pump petrol & mineral engine oil.

The casting would not be directly soaked in fuel or oil but could potentially be spattered with small amounts of fuel or handled by oily hands / gloves; 

Or perhaps the question should be; which resin would you not use in such circumstances?

The casting is a steering damper knob for a vintage motorcycle so the resin will have to take some firm hand tightening force on it but not a massive amount & perhaps be resistant to the occasional light knock without cracking  or shattering chunks off.
There will be a brass/bronze threaded insert cast in.

I'd be interested to hear any thoughts / advice on this

Cheers
By Dravis - 1/30/2017 8:42:15 AM

I take it that you will have to colour the casting resin for the knob?  I would use epoxy and add some sort of fibre filler to the resin.

That would make the knob very strong and using Epoxy would make it resistant,