Posts Tagged ‘Testing’

Methods of testing PEX plastics: Accelerated climatic tests

Many of the data relating to the evaluation of aging of PEX materials obtained by the methods of accelerated environmental tests and in real exposure to the open-air. Accelerated testing can reduce the time needed to obtain the required results, which helps to hold fast enough sampling with various combination of additives and the relations [...]

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Testing PEX plastics: Oxygen, moisture, heat and other environmental factors

In addition to ultraviolet radiation and the action of microorganisms, there are other factors that cause degradation of polymers. Although most polymers are slowly reacts with oxygen, elevated temperatures and ultraviolet radiation can strongly accelerate the oxidation processes. Water has a relatively weak negative effect. Nevertheless, there are three different effects associated with the influence [...]

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