PPG stands for a paint and glass company, Pittsburgh Paint and Glass. For
those looking for a binder material, try polypropylene glycol.Barry Sent from
my Sprint Tablet.
-------- Original message --------From: Troy Prideaux
<troy@xxxxxxxxxxxxxxxxxxxxx> Date: 7/7/20 23:19 (GMT-05:00) To:
arocket@xxxxxxxxxxxxx Subject: [AR] Re: Making composite APCP in Australia For
anyone else who was only finding the paint company PPG when googling, I'm
guessing that's polypropylene glycol. Wikipedia informs me that it's the
plastic used in paintballs, which is an interesting application. Apologies
there. About 4 times during writing that post I reminded myself I must go back
and include the expanded form … got to the end and got distracted. Yes,
Polypropylene Glycol. Seems like a winner of composite solid propellants,
thanks for posting about it. As I said, it’s an option. An option particularly
for someone who resides in a country with no indigenous manufacturing
capability of HTPB as HTPB is very export controlled – not just from the US,
but from Europe and China also. A true PITA to procure – particularly for an
amateur/experimenter. BUT, the catch is the processing. You need to invest in
the processing kit or get real clever with the chem. Cheers, Troy