Strength band
varies widely by micron; fine merino is not a rope fibre
Numbers below are bands used by working engineers, not live quotes. Tensile note: varies widely by micron; fine merino is not a rope fibre.
Fire performance in this atlas is editorial. Real projects need the assembly report.
Mécanique
Stiffness
Modulus follows chemistry and orientation — not the marketing nickname.
Toughness
Crack growth, not peak stress, retires most real parts.
Fatigue / creep
Cyclic and time-dependent damage dominate certificates issued on static coupons.
Hardness / hand
Indentation, drape or compressive class — whichever the trade actually measures.
Thermique
Conductivity
low when lofted — Laine is used as insulation.
Service temperature
Melting / softening / decomposition band: chars; does not melt-drip like PE.
Expansion
Joints and clearances must follow the expansion class of Laine, not of steel-by-habit.
Thermal mass
Density ~1.31 g/cm³ sets how fast a section changes temperature.
Ageing of λ
Foams, VIPs and moist batts drift; quote aged values.
Électrique
Conductor or dielectric
Laine is generally a dielectric or semiconductor film, not building wire.
Static / EMI
Fillers and moisture change resistivity more than brochures admit.
Standards language
IACS, volume resistivity or dielectric strength — pick the quantity the job uses.
Feu
Reaction to fire
Typical declared class: better than commodity synthetics in many apparel tests. This is not a universal passport.
Resistance vs reaction
Euroclass is reaction. EI/R ratings are assemblies — boards, coats, cavities.
Melt-drip / char
Laine can burn or drip; do not treat it as A1 without a system test.
Smoke / toxicity
CO, HCN, HF or fibres — the species depend on chemistry. Name the test (ISO 5659, EN 45545, NFPA 1971).
If a salesperson quotes a single “safety score”, ask which standard, which thickness, which year.
Continuer
Plus dans Textiles
🌱
Coton
Cellulose de graine qui a habillé la révolution industrielle.
Global 44 🦋Soie
Filament animal au kilomètre : luxe, sutures, gabarit bio-inspiré.
Global 41 🎽Polyester
Polymère dominant de l’habillement : PET de bouteille filé, sèche vite, microfibres.
Global 49 🪢Nylon
La polyamide de Carothers : bas, câblé pneu, corde d’escalade.
Global 48 🦺Aramide
Polyamide aromatique : packs balistiques, filtration à chaud, substitut d’amiante.
Global 62