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Old 07-02-2009, 05:29 PM   #1
Fastrr

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I'm looking for a good light color or clear laminating epoxy that after oven cure of a few hours will have a tg of 250F. Also I am hoping for an inexpensive brand that can be purchased by quarts or gallon.

I also need a high temp tooling epoxy and surface coat.

Any advice?

Also I prefer doing a vacuum bag wet lay up as opposed to vacuum infusion.
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Old 07-03-2009, 12:08 AM   #2
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For most of our tooling, I use epoxies from PTM&W. Their high temp resins are very good.
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Old 07-03-2009, 07:08 AM   #3
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Quote:
Originally Posted by Fastrr View Post
I'm looking for a good light color or clear laminating epoxy that after oven cure of a few hours will have a tg of 250F. Also I am hoping for an inexpensive brand that can be purchased by quarts or gallon.

I also need a high temp tooling epoxy and surface coat.

Any advice?

Also I prefer doing a vacuum bag wet lay up as opposed to vacuum infusion.
I want to say Huntsman has a hightemp tooling resin system (and gelcoat). It was black. I remember that
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Old 07-03-2009, 10:16 PM   #4
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Quote:
Originally Posted by riff42 View Post
I want to say Huntsman has a hightemp tooling resin system (and gelcoat). It was black. I remember that
The Huntsman 8105 epoxy is a nice high temp epoxy. can go to 300F.
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Old 07-03-2009, 11:17 PM   #5
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But IMO it's asking for too much to want something that's also clear and inexpensive. Those characteristics don't generally go with high temp resins. The decision needs to be made if these are poseur "cool" parts, or high quality strong composites.
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Old 07-06-2009, 04:48 PM   #6
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i used a hardener on my latest bonnet that after it's been post cured for 10hours at 60C , it has heat resistance 140C (284f)

but its from the german company i buy stuff from (r-g.de) so if you re in america, i dont think it will interest you...

the hardener is only slightly yellow,and the resin water-clear, its perfect for laminating carbon...
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Old 07-07-2009, 01:43 PM   #7
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A slight blue or amber is ok. Like the reninfusion it is slightly blue then turns amber after curing (weird), it still leaves the blackness of the c/f showing. Some polyesters turn the carbon fiber a brownish color. This is what I'm trying to avoid.

Aga that sounds like an awesome resin if the final tg is higher than the oven post cure temp.

I was looking at the specs on the Huntsman 8105 and they look good, but you say the resin is black in color?
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Old 07-08-2009, 05:52 AM   #8
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Quote:
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I was looking at the specs on the Huntsman 8105 and they look good, but you say the resin is black in color?
Yup. Both the tooling coat and the laminating resin.
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Old 07-08-2009, 09:54 AM   #9
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I'm using HTR212/ 386-99 from Resin Services. The rep said it's good to 325F. It's very clear.
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Old 07-08-2009, 04:21 PM   #10
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Quote:
Originally Posted by Fastrr View Post
A slight blue or amber is ok. Like the reninfusion it is slightly blue then turns amber after curing (weird), it still leaves the blackness of the c/f showing. Some polyesters turn the carbon fiber a brownish color. This is what I'm trying to avoid.

Aga that sounds like an awesome resin if the final tg is higher than the oven post cure temp.

I was looking at the specs on the Huntsman 8105 and they look good, but you say the resin is black in color?
the 8105 is amber not black. I really doubt you will be able to see a color variance by using a amber epoxy vs. clear. you shouldn't have enough resin on the surface to matter.
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