Norm

NEN-EN-ISO 75-2:2013 en

Kunststoffen - Bepaling van de vervormingstemperatuur onder belasting - Deel 2: Kunststoffen en eboniet

52,53

Over deze norm

Status Definitief
Aantal pagina's 8
Commissie Kunststoffen
Gepubliceerd op 01-05-2013
Taal Engels
This part of ISO 75 specifies three methods, using different values of constant flexural stress, that can be used for the determination of the temperature of deflection under load of plastics (including filled plastics and fibre-reinforced plastics in which the fibre length, prior to processing, is up to 7,5 mm) and ebonite: - method A, using a flexural stress of 1,80 MPa; - method B, using a flexural stress of 0,45 MPa; - method C, using a flexural stress of 8,00 MPa. The standard deflection, Δs, used to determine the temperature of deflection under load corresponds to a flexural-strain increase, Δef, defined in this part of ISO 75. The initial flexural strain due to the loading of the specimen at room temperature is neither specified nor measured in this part of ISO 75. The ratio of this flexural-strain increase to the initial flexural strain depends on the modulus of elasticity, at room temperature, of the material under test. This method is, therefore, only suitable for comparing the temperatures of deflection of materials with similar room-temperature elastic properties.

Details

ICS-code 83.060
83.080.01
83.080.10
Nederlandse titel Kunststoffen - Bepaling van de vervormingstemperatuur onder belasting - Deel 2: Kunststoffen en eboniet
Engelse titel Plastics - Determination of temperature of deflection under load - Part 2: Plastics and ebonite
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