low Water vapor transmission rate (MVTR) material
low Water vapor transmission rate (MVTR) material
(OP)
hi,
I need to design a box that should be totally sealed from water and water vapor.
Although i know that the best materials for that purpose is metals
(for example aluminum (MVTR=0.001 g/m^2/day)) it can't be a metal.
The solution I was thinking about was Ceramic ?
Or maybe a plastic with very low MVTR?
What material has the lowest MVTR except metals?
Can I build a composite box from fiberglass (that will give the strength) with a sealing laer made of ceramic material?
thanks
I need to design a box that should be totally sealed from water and water vapor.
Although i know that the best materials for that purpose is metals
(for example aluminum (MVTR=0.001 g/m^2/day)) it can't be a metal.
The solution I was thinking about was Ceramic ?
Or maybe a plastic with very low MVTR?
What material has the lowest MVTR except metals?
Can I build a composite box from fiberglass (that will give the strength) with a sealing laer made of ceramic material?
thanks






RE: low Water vapor transmission rate (MVTR) material
Plastics all transmit some water vapour, but co-extruded films with an EvOH barrier layer perform quite well.
As a stand alone plastic PET is quite good.
If a metal layer can be applied to one surface of a film, such as a wine cask bladder, that should give excellent results.
Regards
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RE: low Water vapor transmission rate (MVTR) material