Aging


When storing polymers in liquids or at higher temperatures, the external stress is absent. The specimens or construction elements move freely in the liquid. Depending on the experimental setup, the liquid may be changed regularly. The materials can also be stored at higher temperatures. This leads to an accelerated physical or chemical degradation on the one hand and can be a precondition for activating ageing processes on the other hand.

In our storage containers and ovens, we can provide diverse storage possibilities of specimens and small construction elements. In addition, we can offer you the evaluation of changes of surface properties, light microscopy and the documentation of crack initiation and changes of colour and gloss. The change of material properties can also be characterised by appropriate mechanical characteristic values. 


Medium Storing

  • Suds, tensides, oils, greases, fitting lubricants, cleaning agents, chemical products, etc.
  • At room temperature and higher temperatures
  • Regular changing of liquids
  • Constant liquid moving

Thermal Storing

  • At higher temperatures of up to ca. 300 °C
  • At lower temperatures of up to ca. -70 °C
  • Hanging storage of specimens

Storing in Water Vapour

  • Storage over vapour of up to 95 °C
  • Hanging storage of specimens

Storing in Water

  • Up to 95 °C
  • Hanging storage of specimens
  • Distilled water
  • Supply water
  • Constant liquid moving

Alternating Stress

  • From -70 to + 160 °C
  • Humidity adjustable
  • Temperature and humidity are separately programmable and cyclically repeatable
  • Alternating climate tests
  • Recording of temperature and humidity

Storing in Standard Atmosphere

  • 23 °C, 50 % humidity
  • Determination of the water absorption 

Conditioning

  • Express conditioning of polyamide 


Sample Preparation

  • Punching or cutting of specimens
  • Fixing of specimens in the liquid

Testing Conditions

  • Individual adjustment of
    • Liquids
    • Temperature
    • Duration of storage (total time and points of removal)
    • Indicator tests for determination of the property changes
  • Adjustment of specimen geometry and specimen number

Standards

  • DIN EN ISO 62:
    Plastics – Determination of water absorption
  • DIN EN ISO 1110:
    Plastics – Polyamides – Accelerated conditioning of test specimens
  • DIN EN 60068-2-38:
    Environmental testing – Part 2-38: Tests – Test Z/AD: Composite temperature/humidity cyclic test 

Contact

Dipl.-Ing. Heidrun Müller
Telefon: +49 (0)3461 30889-68
heidrun.mueller@psm-merseburg.de

Quickinfo

Standards

  • DIN EN 60068-2-38
  • DIN EN ISO 62
  • DIN EN ISO 1110
  • DIN EN ISO 2440