Each industry has some specialized terminology exclusive to them, but not everyone understands the meaning of the expression. The following describes the concept of the relevant terminology related to the ultraviolet aging test chamber.
Store samples: Store some test materials used to compare the performance changes before and after exposure under stable conditions.
Control material: a material with a similar composition and structure to the test material, used for performance comparison after exposure to the test material at the same time.
Control sample: A portion of the control material used for exposure.
Irradiance: The radiant energy in a certain wavelength or a wavelength band irradiated on a unit time per unit area, the unit of UV aging test box is W / ㎡.
Irradiation: Time integration of irradiance, unit is J / ㎡.
Spectral energy distribution: The absolute or relative radiation energy emitted by a light source or received by an object as a function of wavelength.
Blackboard thermometer: a temperature measuring device, consisting of a metal base plate and a heat-sensitive element, the heat-sensitive element is close to the center of the metal base plate, the light-receiving surface of the entire device is coated with a black coating, which can evenly absorb the full sunlight spectrum radiation .
Fluorescent ultraviolet lamp: a low-pressure mercury arc lamp, the radiation emitted by the mercury arc is converted into a longer wavelength ultraviolet radiation by the phosphor coating, and its spectral energy distribution depends on the emission spectrum of the mercury arc, the phosphor coating, and the glass tube The transmittance of ultraviolet radiation.
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