fumed silica / fibreglass core + foil barrier
ChemistryPainel a vácuo is specified as fumed silica / fibreglass core + foil barrier. Density band 150–250 kg/m³ panels.
What holds Painel a vácuo together is not the nickname. Formula fumed silica / fibreglass core + foil barrier, density 150–250 kg/m³ panels.
Meters are atlas-relative. Grades are the SKUs buyers write.
Fases
Microstructure
OrderProcessing sets grain, crystallinity or fibre orientation — the reason two lots of Painel a vácuo can test differently.
Interfaces
SurfacesCoatings, oxide films, sizings or paper faces often decide weather and fire behaviour more than the bulk brochure.
Defects
FlawsInclusions, voids, knots, pinholes or residual stress start the failures that mill certificates do not list.
Grades
VariantsPainel a vácuo is a family. Grade names below are the ones buyers actually write on RFQs.
Ageing
TimeMoisture, UV, creep, hydrogen or carbonation shift properties in service. Design to the aged state.
Medidores relativos
Strength14
Strength is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Heat envelope40
Heat envelope is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Fire behaviour44
Fire behaviour is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Insulation99
Insulation is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Workability24
Workability is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Circularity40
Circularity is an editorial 0–100 mark relative to the other 31 materials in this atlas — not a laboratory certificate.
Graus
Fumed-silica core
Longer claimed life.Longer claimed life.
Glass-fibre core
Cheaper, faster ageing risk.Cheaper, faster ageing risk.
Fridge size
High volume, short edges.High volume, short edges.
Building 600×1000
Handle like glass.Handle like glass.
Cryogenic MLI
Not a VIP, related physics.Not a VIP, related physics.
Ligações
Primary bonding
Painel a vácuo holds together by ionic/covalent networks.
Secondary forces
Hydrogen bonds, van der Waals stacks or grain-boundary cohesion set toughness and moisture uptake.
Composites & fills
Fillers, fibres, plasticisers or aggregates are part of the real product, not impurities.
Environment film
Oxides, chars, sizings or paints are the layer the world actually meets.
Change the grade, the coating or the moisture and you have a different material with the same English name.
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