UNI 6542-1969 Glass fibre materials for thermal and acoustical insulation. Resin bonded felts and slabs and pipe coverings. Determination of the inibition due to the capillarity.
This method is used to determine the capillarity imbibition of resin felts, glass fiber panels and cupels for thermal and acoustic insulation. Imbibition by capillarity is defined as the height in millimeters to which a colored solution of fuchsin rises, when a sample of the artefact is partially immersed, for 24 hours, in a tray containing the aforementioned solution, kept at a constant level. The method consists in keeping the sample with one end immersed for 10 mm in a fuchsin solution and in the measuring device, after 24 hours, the height to which the solution has risen in the sample. Equipment. Method.
UNI 6542-1969 history
1969UNI 6542-1969 Glass fibre materials for thermal and acoustical insulation. Resin bonded felts and slabs and pipe coverings. Determination of the inibition due to the capillarity.