Re: HDPE

[Tim Whitlatch <whitey@jlab.org>]

Hi Beni,

That would probably be ok. Delrin has a lower coefficient of thermal 
expansion and would probably be better. If the thickness required cannot 
be found, pieces an be glued together. Since we are talking about 
heating, the expansion may be significant (as much as 1 - 2 mm over the 
entire wall). Delrin also has a much larger thermal conductivity.

Cheers,

       Tim

ps.  Delrin is good for use up to 82°C (180°F). This should be adequate

beni zihlmann wrote:
> Hi Tim,
> while looking around to buy some HDPE for the temperature test I 
> stumbled over
> TIVAR H.O.T. This material seems to have similar properties like HDPE 
> belonging
> to the group of UHDPE (ultra high density PE). It is quoted in some 
> spec sheet that
> it can be used up to 135 deg.C (275F). If the cost of this material is 
> not too high we
> might considering using this provided that the temperature test will 
> be ok.
>
> cheers and happy Holidays,
> Beni
>