EUROLAB, together with its state-of-the-art accredited laboratories and expert team, provides precise and rapid testing services within the scope of ISO 11359-1 testing. This standard specifies the general conditions for thermomechanical analysis of thermoplastics and thermoset materials, filled or unfilled, in sheet or molded parts.
Thermomechanical analysis consists of determining the deformations of a test specimen under constant load as a function of temperature and/or time.
For the purposes of this document, the terms and definitions given in ISO 472 and the following apply.
A technique in which a size (or volume) of a substance under negligible constant stress is measured as a function of temperature while the substance is subjected to a controlled temperature program.
A distinction is made between linear thermodilatometry (where a size is measured) and volume thermodilatometry (where volume is measured).
Thermomechanical Analysis (TMA) is one of the most common techniques that measures the dimensional changes of solid or liquid materials as a function of temperature, time and applied force. TMA is generally used to measure the coefficients of thermal expansion (CTE), glass transition temperature (Tg), and modulus of compression of a material by applying constant force at varying temperature. TMA is a sub-discipline of the Thermomechanometry (TM) technique.
The simplest test is zero-force thermomechanical analysis, often referred to as thermodilatometric analysis (TDA). It measures the dimensional change of the sample by heating or cooling it due to active/deactive atomic and molecular vibrations. This measurement gives the coefficient of linear expansion, which is the partial increase in length per unit increase in temperature. Another important test is the creep and creep recovery test in polymeric materials.
In this test, the sample is loaded and unloaded over time to measure creep and creep recovery. The measurement of the glass transition temperature (Tg) is also one of the most important applications. During Tg analysis, the dimensional change of a polymeric material as a function of temperature at constant pressure or as a function of pressure at constant temperature is measured.
EUROLAB assists manufacturers with ISO 11359-1 test compliance. Our test experts, with their professional working mission and principles, provide you, our manufacturers and suppliers, the best service and controlled testing process in our laboratories. Thanks to these services, businesses receive more effective, high-performance and quality testing services and provide safe, fast and uninterrupted service to their customers.
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