Sandwich panel: a self-supporting composite panel consisting of a bimetal surface and an adiabatic core material bonded between the two metal surfaces.
Steel substrate: it is used for coating steel plate or steel strip.
Coating material: it is liquid material coated on the surface of the substrate with functions such as protection, decoration and it has other special functions (such as: antifouling, heat insulation, mildew resistance, insulation, etc.). It is usually made up of four components film - forming substances, solvents, pigments and additives.
Fireproof limit: the time when a building component, fitting, or structure lose stability, integrity, or heat insulation on fire under standard fire resistance test conditions.
Bond strength: maximum load when the metal surface sandwich panel and core material are separated per unit area. The unit is MPa.
Flexural loading capacity: under the condition of standard support spacing, the metal surface sandwich panel is loaded to the specified deflection. The units are KN/m2.
Non-thermal damage: the damage to articles and equipment which is not caused by the heat energy released by combustion in the fire. It is an important item of fire loss, especially in cleanroom fire loss. Common non-thermal damage is the corrosion of valuables and equipment by acid fog combined with fire smoke and fire water.
Smoke damage index (SDI): the product offire propagation index-FPI represents the degree of damage to the clean room environment caused by smoke and dust from fire. The unit is (m/s1/2)/(KW/m) 2/3.