Yes, this seems to be similar to what I have used with success.
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On Wed, Dec 30, 2020 at 4:18 AM Nikolai Nielsen <nielsen.nikolai86@xxxxxxxxx>
wrote:
Richard, is this possibly akin to what you used?
https://www.amtcomposites.co.za/product/woodcast-30/
Nikolai Nielsen
On Tue, 29 Dec 2020 at 18:18, Richard Nakka <richard.rocketry@xxxxxxxxx>
wrote:
Nikolai, I do *not *recommend using West epoxy, it reacts with the AP
during cure and makes the grain very porous and otherwise unsuitable. I had
a particularly nasty cato with the one grain I test fired. The epoxy that I
did have success with is the kind used for putting a hard coating on
tabletops. This kind used two *equal parts* epoxy/hardener. There should
be no ammonia smell (or very little) during mixing, this is a good
indicator. The brand I used was NuLustre, but there seems to be many brands
available.
Richard
On Tue, Dec 29, 2020 at 2:45 AM Nikolai Nielsen <
nielsen.nikolai86@xxxxxxxxx> wrote:
I see the one you suggested is a bisphenol A (BPA) based epoxy and so
is what Richard used in his RNX fuel. Should that be what I look out for?
Nikolai Nielsen
On Tue, 29 Dec 2020 at 10:15, Nikolai Nielsen <
nielsen.nikolai86@xxxxxxxxx> wrote:
The problem with epoxy recipes is I have no idea what my local
equivalent is. All these epoxys that are mentioned are branded items.
On Tue, 29 Dec 2020, 6:10 AM akazilla, <dmarc-noreply@xxxxxxxxxxxxx>
wrote:
Hello Nikolai,
Have you considered using EPON 828 epoxy? it is an older epoxy resin
but available pretty easily. Shell chemical makes the stuff so start with
them.
Best of luck,
Larry
Sent via the Samsung Galaxy S8+, an AT&T 5G Evolution capable
smartphone
-------- Original message --------
From: Nikolai Nielsen <nielsen.nikolai86@xxxxxxxxx>
Date: 12/28/20 18:05 (GMT-06:00)
To: sugpro@xxxxxxxxxxxxx
Subject: [sugpro] AP fuels
does anybody have the burn rate data for Ammonium perchlorate based
propellants that can be made without specialist resins? Are there any
recipes for silicone or polyurethane resin?
Nikolai Nielsen
