The test methods defined in the ASTM D1149 standard developed by the American Society for Testing and Materials (ASTM) are vulcanized rubber, rubber compounds, molded or extruded soft rubber, under conditions of dynamic or static surface tension in an atmosphere containing certain levels of ozone concentration, expressed as partial pressure. and other specified materials or to estimate the effect of exposure on empirically determined materials. The influence of naturally occurring sunlight or light from artificial sources is excluded.
The test methods presented in this standard, whose full name is "ASTM D1149-18 Standard test methods for rubber degradation - Cracking in an ozone controlled environment", are included in the test methods defined in the previously published ASTM D518 and ASTM D3395 standards. For this reason, the ASTM D518 and ASTM D3395 standards were later withdrawn.
The specified conditions of exposure to ozone in controlled environments are more rapid compared to outdoor exposure. However, these accelerated ozone testing methods may not yield results associated with outdoor exposure tests or service performance.
All materials, instruments or equipment used for the determination of mass, force, size, ozone concentration, partial pressure, temperature, velocity and gas exchange rate have direct traceability by other internationally accepted organizations.
Elastomers are a natural or synthetic polymer with elastic properties. Because rubber is flexible, rubber is an example of an elastomer. Rubber can deteriorate over time due to the nature of the material. The most common causes of rubber deterioration include heat, light exposure, and exposure to chemicals and even oxygen. Materials such as rubber gaskets and O-rings are susceptible to degradation due to molecular changes caused by these factors. This can significantly affect the mechanical properties of the rubber seal, resulting in a shortened service life.
Among the numerous test, measurement, analysis and evaluation studies it provides for businesses in various sectors, our organization provides cracking test services in an ozone-controlled environment, among standard test methods for rubber deterioration, within the scope of ASTM D1149-18 standard, with its trained and expert staff and advanced technological equipment. also gives.
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