[tccrockets] Re: Bonding Aluminum to Fiberglass
- From: James Dougherty <jafrado@xxxxxxxxx>
- To: tccrockets@xxxxxxxxxxxxx
- Date: Thu, 29 Nov 2012 20:46:59 -0800
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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