HMTD in Al pipes - Archive File

[megalomania]

HNIW
Frequent Poster
Posts: 46
From: Poland
Registered: JAN 2001
posted 06-26-2001 12:46 AM
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I covered the walls of the pipes with varnish and on this a simple paper. I use HMTD mixed with NC, is it sure that HMTD won't react with paper?


ALENGOSVIG1
Moderator
Posts: 766
From: Vancouver, Canada
Registered: NOV 2000
posted 06-26-2001 01:27 AM
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no it shouldnt. RECLYCLED paper can contain sulfur but i dont know how hmtd reacts with S.
[This message has been edited by ALENGOSVIG1 (edited June 26, 2001).]



Anthony
Moderator
Posts: 2306
From: England
Registered: SEP 2000
posted 06-26-2001 07:50 PM
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I think some kinds of paper (cheap, recycled) contain traces of acid from the bleaching process. But it shouldn't be a problem, you could neutralise the paper in a sodium bicarbonate solution if it bothered you.

[Ropik]

Very good technique(in my opinion) for separating HMTD and Al tubes is:
1) Heat wax to point where it is very thin and pourable
2) Using tweeuers, quickly soak piece of paper in wax and roll it ni the tube
3) Because the wax is very hot, it harden in the tube, not during forming
4) When it cools, you should have Al tube with tight fitting insulation waxed paper with sealed seam.

This paper should be unreactive with HMTD besauce it is thoroughly soaked with wax.

I used this techniqu and it performed good.