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🪨测得物性

矿物棉 · 熔融岩石或玻璃纺成的A1毡——规范里的默认不燃保温。

Numbers below are bands used by working engineers, not live quotes. Tensile note: not structural; binder and facing matter for handling.

Fire performance in this atlas is editorial. Real projects need the assembly report.

力学

Strength band

not structural; binder and facing matter for handling

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.

热学

Conductivity

λ ~0.032–0.040 W/m·K typical batts — 矿物棉 is used as insulation.

Service temperature

Melting / softening / decomposition band: softens ~1000 °C class (stone).

Expansion

Joints and clearances must follow the expansion class of 矿物棉, not of steel-by-habit.

Thermal mass

Density 20–150 kg/m³ products sets how fast a section changes temperature.

Ageing of λ

Foams, VIPs and moist batts drift; quote aged values.

电学

Conductor or dielectric

矿物棉 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.

火灾

Reaction to fire

Typical declared class: A1. This is not a universal passport.

Resistance vs reaction

Euroclass is reaction. EI/R ratings are assemblies — boards, coats, cavities.

Melt-drip / char

矿物棉 tends to char or stay inorganic rather than melt-drip like commodity olefins.

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.

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