What is the black material on composite craft chassis

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JosephS
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What is the black material on composite craft chassis

Post by JosephS »

Hello all.
What is the black top and bottom layer of a composite craft chassis made of? It seems to be a black fiberglass, but I haven't found any black fiberglass fabric nor have I seen any kind of carbon fiber with that type of canvas weave.

It also appears that the center is a non-fiberglass polyester fill layer.
Does anyone know?

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RC10resto
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Re: What is the black material on composite craft chassis

Post by RC10resto »

Not sure, but I thought they were Graphite?

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Re: What is the black material on composite craft chassis

Post by JosephS »

RC10resto wrote: Fri Jun 16, 2023 5:32 pm Not sure, but I thought they were Graphite?
Thanks. That is leading me in a good direction
https://www.pccomposites.com/category/dry-fabrics/graphite-dry-fabric/

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Re: What is the black material on composite craft chassis

Post by jwscab »

Graphite, just carbon fiber. Usually a super fine weave but could also be isotropic.

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Re: What is the black material on composite craft chassis

Post by Phin »

Black CF, without a weave pattern, is usually sold as unidirectional. Isotropic is the fab process where each ply of CF is laid at a 45 or 90 degree angle to the previous one.

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Re: What is the black material on composite craft chassis

Post by JosephS »

Phin wrote: Sat Jun 17, 2023 8:37 am Black CF, without a weave pattern, is usually sold as unidirectional. Isotropic is the fab process where each ply of CF is laid at a 45 or 90 degree angle to the previous one.
Thanks.

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Re: What is the black material on composite craft chassis

Post by jwscab »

Yes sorry, my mistake. Unidirectional is often layed out in isotropic patterns for strength, as Phin said.

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