[tccrockets] Re: Bonding Aluminum to Fiberglass
- From: James Dougherty <jafrado@xxxxxxxxx>
- To: tccrockets@xxxxxxxxxxxxx
- Date: Thu, 29 Nov 2012 20:49:23 -0800
Sorry, 1/32" thick G-10 Garolite
http://dragonplate.com/ecart/product.asp?pID=3925&cID=93
Ouch, pricy, I know ...
But If you could design the fins to fit those sheets... man oh man.
On Thu, Nov 29, 2012 at 8:46 PM, James Dougherty <jafrado@xxxxxxxxx> wrote:
> Richard,
> What laminates are you using?
> I have a vacuum setup I am not using if you want to borrow it.
> -james
>
>
> On Thu, Nov 29, 2012 at 8:36 PM, James Dougherty <jafrado@xxxxxxxxx>wrote:
>
>> Actually, Richard, disregard, Cotronics is not what you need for this - I
>> see what you are doing.
>> http://www.jamestowndistributors.com/userportal/show_product.do?pid=12214
>>
>> It's an acid wash which chemically alters the surface as you've described.
>>
>> Very cool! Can you send us a full report?
>>
>>
>> On Thu, Nov 29, 2012 at 8:30 PM, James Dougherty <jafrado@xxxxxxxxx>wrote:
>>
>>> That's exactly what it is, like an etching primer you use for metal.
>>>
>>> Get some Cotronics 4540 Machinable aluminum or 4525. I have some
>>> I can give you one at the next launch if you need like pre-kitted 2 oz
>>> batches ;-)
>>>
>>>
>>> On Thu, Nov 29, 2012 at 6:09 PM, R Dierking
>>> <applerocketry@xxxxxxxxxxx>wrote:
>>>
>>>> I'm thinking it's acid based to chemically etch the material and also
>>>> a film so the aluminum will not oxidize immediately when exposed again to
>>>> the air. Some people use wet sanding of the aluminum to prevent the
>>>> oxidation layer that prevents good bonding. For this technique, slow cure
>>>> epoxy (30 minute) is used and the aluminum surface is wet sanded with the
>>>> epoxy. I know, it sounds like a big mess, but it works!
>>>>
>>>> For my application, I'm looking to bond 1/8" thick aluminum between
>>>> sheets of 1/32" thick G-10 Garolite for fins. The attached photo shows the
>>>> aluminum test peice.
>>>>
>>>> Anyway, I'm probably going to try the West Systems Aluminum Etch on
>>>> some test pieces and see if I can pull the layers apart.
>>>>
>>>> Richard Dierking
>>>> ------------------------------
>>>> Subject: [tccrockets] Re: Bonding Aluminum to Fiberglass
>>>> From: bandman444@xxxxxxxxx
>>>> Date: Thu, 29 Nov 2012 17:31:47 -0800
>>>> To: tccrockets@xxxxxxxxxxxxx
>>>>
>>>>
>>>> I don't, when we bonded the aluminum fins to our N5800 rocket we used
>>>> LOCtite Hysol 9430 and used a sanding while epoxy on approach. It held to
>>>> Mach 3 so I guess it was ok.
>>>>
>>>> The West Systems kit looks interesting.
>>>>
>>>> Bryce Chanes
>>>>
>>>> Sent from my iPhone
>>>>
>>>> On Nov 29, 2012, at 4:51 PM, R Dierking <applerocketry@xxxxxxxxxxx>
>>>> wrote:
>>>>
>>>> Does anyone have experience using the West Systems 860-8 aluminum etch
>>>> kit for bonding aluminum to fiberglass?
>>>>
>>>> Richard Dierking
>>>>
>>>>
>>>
>>
>
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