The practice defined in the ASTM D750 standard developed by the American Society for Testing and Materials (ASTM) includes certain variations in test conditions and procedures that would apply when using ASTM G151, ASTM G152, ASTM G153, ASTM G154 or ASTM G155 standards for exposure of vulcanized rubber compounds.
This procedure, whose full name is “ ASTM D750-12 Standard procedure for rubber degradation using artificial weathering apparatus,” also includes the preparation of test specimens and the evaluation of results.
This application involves the use of an open-flame carbon arc light source, a closed carbon arc light source, a xenon arc light source, or a fluorescent UV source combined with heat and humidity, on rubber specimens held in a gage or holder with or without a specified stress. Explain the procedures to be used in determining the effects on The aim is to try to accelerate the effects of light, heat and humidity in the natural environment. Exposures are not intended to simulate degradation caused by local weather events such as atmospheric pollution, biological attack, and exposure to salt water.
The primary criterion for estimating weather resistance is the percent reduction in tensile strength and elongation at break. An additional criterion for estimating weather resistance is the observed extent of surface cracking and cracking.
Results obtained using these test procedures should not be shown to be equivalent to the results of any natural exposure test until the degree of quantitative correlation for the material in question has been determined.
Due to differences in the spectral power distributions of exposure sources, as well as other conditions in different laboratory wear test types, different procedures may not result in the same performance rankings or failure modes of materials.
When performing exposures on instruments using laboratory light sources, it is important to consider how well artificial weathering conditions will reproduce property changes and failure modes on the materials tested, caused by end-use environments.
Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization also provides standard testing services for rubber deterioration using artificial weathering apparatus, within the scope of ASTM D750-12 standard, with its trained and expert staff and advanced technological equipment.
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