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Posted: 1/19/2015 12:37:20 PM EDT
[#1]
87x the melting point of plastic.
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Posted: 1/19/2015 12:39:15 PM EDT
[#2]
The melting point of the fiber is far above the burning point of the resin .
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Posted: 1/19/2015 12:39:32 PM EDT
[#3]
Probably depends on the resin. (Not in response to the above post)
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Posted: 1/19/2015 12:39:41 PM EDT
[#4]
Wait, CF doesn't melt it burns like fiberglass.
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Posted: 1/19/2015 12:40:53 PM EDT
[#5]
Quote HistoryQuoted: The melting point of the fiber is far above the burning point of the resin . |
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Posted: 1/19/2015 12:40:55 PM EDT
[#6]
Is this becoming a conspiracy thread?
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Posted: 1/19/2015 12:41:01 PM EDT
[#7]
depends on the makeup of the fiber mat and the resins, I'd guess.
I've seen composite pieces meant for use in aircraft engines bays that were cured at a peak temp of 600 F. it won't really "melt" either, like candle wax. |
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Posted: 1/19/2015 12:41:11 PM EDT
[#8]
It depends on the make up.
They use carbon fiber for missile nose cones and brake rotors. 
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Posted: 1/19/2015 12:41:31 PM EDT
[#9]
Bout tree fiddy
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Posted: 1/19/2015 12:42:14 PM EDT
[#10]
I would think the resin used would be the limiting factor for heat. The carbon itself is gonna hold up to anything that you wouldn't melt you first. All carbon fiber stuff is not created equal.
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Posted: 1/19/2015 12:43:59 PM EDT
[#11]
The fiber has no defined melting point. In fact its slightly higher form, graphite, has a temperature range appropriate for the re-entry of the space shuttle.
That said, its weak point is the resin matrix that encapsulates the fiber. Higher-end carbon composites use better epoxies but several commercial composites use cheaper alternatives like Polyester resins whichhave much lower temperature ranges and thermal resistance. |
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Posted: 1/19/2015 12:44:42 PM EDT
[#12]
Carbon has no melting point. It sublimes.
A carbon fiber reinforced polymer is limited by the properties of the polymer. |
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Posted: 1/19/2015 12:46:03 PM EDT
[#13]
Doesn't matter. The resin will melt
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Posted: 1/19/2015 12:53:48 PM EDT
[#14]
Engineer checking in, I design and sell repairs into heavy industry using composites, typically carbon fiber. The carbon fiber itself will withstand incredibly high temps. The weak point will be the epoxies. Ambient-cured epoxies will typically begin breaking down around 180-200 deg F. We have one ambient cure that will go as high as 300 deg F, and heat-cured epoxies that will go up to around 500 F. As you get into the high temp ratings, the epoxies get trickier to handle, install, cure. Typically you will see discoloration in the epoxies once you have exceeded thier Tg. This is a sign that you have lost integrity. |
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Posted: 1/19/2015 1:02:52 PM EDT
[#15]
Phenolic resin would get you to 220 C.
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Posted: 1/19/2015 1:03:25 PM EDT
[#16]
Quote HistoryQuoted:
Engineer checking in, I design and sell repairs into heavy industry using composites, typically carbon fiber. The carbon fiber itself will withstand incredibly high temps. The weak point will be the epoxies. Ambient-cured epoxies will typically begin breaking down around 180-200 deg F. We have one ambient cure that will go as high as 300 deg F, and heat-cured epoxies that will go up to around 500 F. As you get into the high temp ratings, the epoxies get trickier to handle, install, cure. Typically you will see discoloration in the epoxies once you have exceeded thier Tg. This is a sign that you have lost integrity. Best answer yet. I knew the epoxies/resin would be what melted or failed vs the actual carbon fiber. Hmm - well someone get one of these idiots with more money than brains and see how long a PRI carbon fiber free float tube will last 
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Posted: 1/19/2015 1:07:44 PM EDT
[#17]
Quote HistoryQuoted:
Best answer yet. I knew the epoxies/resin would be what melted or failed vs the actual carbon fiber. Hmm - well someone get one of these idiots with more money than brains and see how long a PRI carbon fiber free float tube will last
Quote HistoryQuoted:
Quoted:
Engineer checking in, I design and sell repairs into heavy industry using composites, typically carbon fiber. The carbon fiber itself will withstand incredibly high temps. The weak point will be the epoxies. Ambient-cured epoxies will typically begin breaking down around 180-200 deg F. We have one ambient cure that will go as high as 300 deg F, and heat-cured epoxies that will go up to around 500 F. As you get into the high temp ratings, the epoxies get trickier to handle, install, cure. Typically you will see discoloration in the epoxies once you have exceeded thier Tg. This is a sign that you have lost integrity. Best answer yet. I knew the epoxies/resin would be what melted or failed vs the actual carbon fiber. Hmm - well someone get one of these idiots with more money than brains and see how long a PRI carbon fiber free float tube will last
Send me 2 and I'll destroy one for you. I want one for a build.
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Posted: 1/19/2015 1:19:47 PM EDT
[#18]
Quote HistoryQuoted:
Send me 2 and I'll destroy one for you. I want one for a build. Quote HistoryQuoted:
Quoted:
Quoted:
Engineer checking in, I design and sell repairs into heavy industry using composites, typically carbon fiber. The carbon fiber itself will withstand incredibly high temps. The weak point will be the epoxies. Ambient-cured epoxies will typically begin breaking down around 180-200 deg F. We have one ambient cure that will go as high as 300 deg F, and heat-cured epoxies that will go up to around 500 F. As you get into the high temp ratings, the epoxies get trickier to handle, install, cure. Typically you will see discoloration in the epoxies once you have exceeded thier Tg. This is a sign that you have lost integrity. Best answer yet. I knew the epoxies/resin would be what melted or failed vs the actual carbon fiber. Hmm - well someone get one of these idiots with more money than brains and see how long a PRI carbon fiber free float tube will last
Send me 2 and I'll destroy one for you. I want one for a build. Haha - no you have me confused with someone with extra money to burn. Best I can do is show a pic... 
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Posted: 1/19/2015 5:17:46 PM EDT
[#19]
The melting point of carbon is 3652 C.
Under ordinary conditions, it ain't going to melt, but in an oxygen atmosphere, it will ignite, and burn to carbon dioxide. |
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