UV aging test standard for polymer materials

Polymer UV aging test is a common aging test for rubber and plastic products. In addition to UV aging and solar radiation aging, there are also temperature aging and loading aging. The UV aging test, also known as the ultraviolet aging test, uses the ultraviolet light in the simulated sunlight to perform the aging light test on the material.

 

UV refers to ultraviolet light in sunlight. Since its light energy is equivalent to the bond energy of polymer chemical bonds, it can cause the scission of polymer compound chains, which is the main reason for the aging and degradation of polymer materials.

Ultraviolet aging test refers to the test method of placing the polymer material aging test sample under the ultraviolet light field and exposing it to obtain the aging behavior and law of the polymer material. Generally, the ultraviolet aging test will stipulate that the ultraviolet region and irradiation intensity, such as 40W/m2, are in the wavelength range of 300nm-400nm.

The light sources used in the UV aging test generally include xenon lamps, fluorescent lamps, tritium lamps and deuterium lamps, among which xenon lamps can effectively simulate the solar spectrum, and fluorescent lamps can effectively simulate the ultraviolet spectrum in sunlight. Strong, generally used for accelerated aging test.

The main key test components used for UV aging test are UV lamps. Generally, UV lamps can be divided into UVA and UVB.

UVA-340 Lamp: The UVA-340 lamp can well mimic the short-wave ultraviolet light in sunlight, that is, the wavelength range from 365 nanometers to the sunlight cut-off point of 295 nanometers.

 

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