Good epoxy

General Composites Discussions Products Talk
#1

Hey guys,
I want to buy an epoxy that can handle high end use temperatures to like 250 - 300F and have a room temp cure. I would also like to keep the cost below $85 a mixed gallon if possible. The cured epoxy needs to not be blue, gray, orange, or yellow tint once cured on the laminate - need clear other wise my customers will complain if they see a hint of color. It also needs to remain hard/stiff when the cured part is heated up to 200-250F. Also this is for infusion and needs to be 600cps or less.

I know, lots of demands from an epoxy :o

#2

I emailed Northern Fiberglass Sales to see what they think would be the best Huntsman resin & hardener to use for the job.

Is Huntsman expensive? how much for their infusion resin cost?

#3

All of Huntsmans products are as high quality as you can get. Dont expect them to be cheap. A lot of car manufacturers use there tooling boards for prototyping new models.

#4

Plan on spending about $1,000 for the 10 gallon kit. They don’t sell in smaller quantities.

#5

Freemansupply sells 6 gallon kits (5 epoxy 1 hardner), look under the RenInfusion Resins.

#6

Wow, yeah $1000 or even $300 is out of my budget for now. Plus i just want to test one gallon before i go buying more volume.

Actually $100 a gallon ain’t bad for good premium epoxy. I just have to find a seller that has one gallon with hardener or even half gallon + hardener.

#7

Call Carl Bergstrom at White Pine Lumber 708-846-0300, they’re my Huntsman product dealer. They might get you a smaller sample or something.The 8601 is just under $300 for 5 galls.

#8

youll have a hard time finding a epoxy system with a Tg that high without needing a post cure, I personally have never seen a epoxy that high from just room temp. you can buy huntsman resin from northern for about ~$500 for a 5 gallon system with 1 gallon hardener which is about $85/gallon, but i know all the huntsman hightemp epoxies require a post cure for the higher Tg systems

#9

Hojo, how about a renfusion epoxy that has a TG of 225 to 250F ?

#10

the 8604 is the last of the infusion resin that will cure room temp. the 8605 is probally what you would want. Heres the data sheet off northern fiberglass’s site: http://www.nfgsales.com/files/active/0/RENINFUSION%208605-Ren%208605.pdf . It requires a post cure, if you didnt post cure it , it would probally take atleasat a month to fully cure

#11

How about 8604, what is the TG? For now I don’t have an oven for post cure.

#12

the 8604 system is a nice, good cosmetics tough resin infusion system, but the Tg is only 164F, the 8605 Tg is 307F but requires that post cure. your going to have a hard time finding what you want without a post cure. I have never seen a epoxy resin system with a Tg over 200F that didnt require a post cure. you may be able to find a vinylester with a high Tg that your looking for without requiring a post cure

#13

Correction my friend … reninfusion 8604 has a TG of 176 if using the infusion process :slight_smile: All the other numbers for this epoxy is off the chart, good stuff.

I bet my epoxy has a TG of 110 haha. That sucks because i like the epoxy i use … only problem is the tg and being 600cps it infuses more slowly than i would like.

I’m gonna check out what the post cure procedure is for the RenInfusion 8605. If it’s under 150F i may use it if i can build a tent oven.

#14

Most of the time the post cure temperature is higher than the TG value. So 300F tg means the post cure temp will more than likely be higher than 300F.

#15

http://www.nfgsales.com/partners/huntsman_advanced_materials/infusion_resins , this is all the reninfusion data sheets, the 8604 Tg is 164F, the 8605 will require a post cure of atleast 300F. you should just consider building a small oven. you could build one for pretty cheap if you do it your self