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Plastics weathering test method
 
The effectness from Long-term carrying fever and external environment for the wire in the cable(such as long-term by light, oxygen, heat, etc.), resulting in plastic gradually change color, crisp, fall and eventual failure of the mechanical properties when plastic products in the processing, storage and specially the process of using.

Polymer materials due to a combination of internal and external factors, the performance gradually deteriorated, and finally the loss of use value, this phenomenon is the aging, thermal aging of plastic materials is an irreversible chemical process. Plastics in the natural climate aging rate is very slow, measured from the actual use of the environment in a few years of its life even longer, so the climate can be artificially accelerated aging test to calculate the service life.

There are three major causes of aging materials, climatic factors as: light (solar radiation), water (humidity) and temperature in natural environment.Simulated in laboratory conditions for natural weathering test methods are:

 a) air oven aging;

 b) air bomb aging;

 c) oxygen bomb aging;

 d) ozone aging;

 e) xenon lamp artificial weathering.

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