Expanding silicone core

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Expanding silicone core

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Matthieu Libeert	Matthieu Libeert posted 12 Years Ago HOT Topic Details
Group: Forum Members Posts: 955, Visits: 3.4K	Hi, I have a question, I've been thinking about it for a long time and it has been on the forum yet, but not with the best results of information. So I'm planning to make some tests with some silicone as an expanding core to get a nice outer finish with carbonfiber. I plan to make a testsample of a tube made out of Carbonfiber: - I plan to use an existing tube of metal - Cut it in halve - add some thickness (thickness of the carbonfiber, so not much) on the inside - Put halves back together - Fill the tube with silicone - remove the silicone from the mould and remove thickness added before - wrap wetted out carbon around the silicone - Put it in an oven and hope for it to expand. My question is, which silicone is expanding? mostly they make silicones that DONT expand because you dont want it to expand in most applications. is it 1K silicone you'd better use or 2K silicone? anyone has some experience with this? I know about the blatter technique and so on, and thats not really what i'm looking for. Matthieu Libeert Founder MAT2 Composites X Sports website: www.mat2composites.com
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Expanding silicone core

matthieutje65 - 12 Years Ago

Really interested in seeing how this goes Matthieu. Keep the thread updated.

Jack.Strong - 12 Years Ago

I will, but first I need to know which silicone to use and how much it will expand :)

matthieutje65 - 12 Years Ago

Ive had a look as I am thinking of using the silicone mould for a plug. Would the silicone stick...

Jack.Strong - 12 Years Ago

I guess not...Silicone is normaly selfreleasing on most types of resins... I it would be a problem I...

matthieutje65 - 12 Years Ago

i had a quick look on google and found a few but the temps at which it expanded at were quite high

neilb - 12 Years Ago

Matthieu, I am looking in to this here in Sweden, hope to get back to you in a few days. I also...

prsw - 12 Years Ago

thanks prsw, would be great!

matthieutje65 - 12 Years Ago

[quote][b]matthieutje65 (05/02/2013)[/b][hr]thanks prsw, would be great![/quote] update, nothing...

prsw - 12 Years Ago

...

neilb - 12 Years Ago

The company I talked to had similar products, but they all react at temperatures higher then we...

prsw - 12 Years Ago

300degrees is indeed a very high temperature. Nice to see we are a lot on here trying to find an...

matthieutje65 - 12 Years Ago

Here is scanned article about south African motorcycle carbon wheel manufacturer BST. Images turn...

prsw - 12 Years Ago

thanks prsw, interesting article, saved it on my computer :rolleyes: found this patent in...

matthieutje65 - 12 Years Ago

just came up with a new theory, what if you would work with some type of blatter filled with some...

matthieutje65 - 12 Years Ago

yes maybe, but will the pressure be high enough? The silicone gives a mechanical pressure, not like...

prsw - 12 Years Ago

Hi Matt I came across an article in (I think it was called) Composite World. There was an article...

fgayford - 12 Years Ago

Update I have called a company who told me to call another company who told me to call another...

prsw - 12 Years Ago

Here is the link to the article I spoke of. Its awesome and so high tech....

fgayford - 12 Years Ago

Thanks for the updates! Fred, they don't really talk about the silicone expanding but more as a core...

matthieutje65 - 12 Years Ago

Hi Matt I know they went into great detail about the silicon expanding exerting tremendous...

fgayford - 12 Years Ago

Found something new [YouTube]http://www.youtube.com/watch?v=YexcOfBv8B8[/YouTube]

matthieutje65 - 12 Years Ago

Fred Thats great, thank you. I sent an email to their supplier now, lets see if the product is...

prsw - 12 Years Ago

I got a reply that they dont have reseller in Europe, and they asked how much they should send by...

prsw - 12 Years Ago

I guess they wont ship a few Kg :p their should probably be a suplier in europe...

matthieutje65 - 12 Years Ago

For extensive knowledge on silicones, contact the Wacker distributor, in your case, MC Technics in...

Herman - 12 Years Ago

Is there an issue with "silicone migration"? My parts need to have a secondary bond after they are...

dy123 - 11 Years Ago

Thermal coefficient of expansion for aluminium is 22.2 (10E-6/K), unfilled epoxy resins are 45-65,...

brainfart - 11 Years Ago

Agreed with brainfart - I think the idea here is that even with widely different coefficients of...

Drew Diller - 11 Years Ago

> Is there an issue with "silicone migration"? Don't know, but certainly not if you wrap the...

brainfart - 11 Years Ago

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