Phenolic insulation board test indicators
single thermal insulation materials, is the main part of the thermal insulation engineering application, in use process need to other materials. Such as: phenolic insulation board, extruded polystyrene board, rock wool board, glass wool board, polyurethane insulation board, etc. , to test before using the following content:
1, the coefficient of thermal conductivity ( W / m· K) : the technique index is the key to the relationship between engineering heat preservation effect index, in general, the laboratory test is in lumber drying to constant weight test, and the applications of the materials is in the air with certain humidity under the conditions of use, therefore, when using should be multiplied by a certain factor; Or, adjust the material directly to the test using the environment conditions.
2, apparent density, Kg/m3) : the apparent density of material in a certain extent affect the coefficient of thermal conductivity and apparent density of the unqualified materials will directly lead to the physical performance, such as strength, dimensional stability, etc.
3, compression strength, MPa) : refers to the specimen deformation under compressive stress at 10%. It is related to the durability and resistance to impact of the surface system.
4, dimension change rate ( mm) : size rate of materials will result in the system of surface cracking.
5, the coefficient of water vapor ng/ ( Pa· m· s) ] : this determines the performance of water vapor through the performance, to a certain extent determines the condensation of metope or not.
6, oxygen index: flame retardant, fire can not up to standard.