Search standard for testing available at SKZ
Durable – reliable – safe
Everyday life without plastic products is impossible. Therefore it's important that they fulfill their tasks as good as perspected. We are happy to perform the necessary quality assurance tests for this purpose.
Tested safety
Safety and outstanding quality are good sales arguments for your products. In our accredited test laboratory, we test and certify a wide range of different plastic products using numerous test methods.
Confidence bonus for certified products
Test seals increase confidence in a product and the associated tests for quality assurance. Our accredited test laboratory will also test and certify your products.
Search standard for testing available at SKZ
High pressure autoclave test
Do you want to estimate the service lifetime of your product? Will it last 20, 50 or more than 100 years?
The estimation of service lifetime via high pressure autoclaves can give you answers.
Advantages of the method
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Accelerated thermo-oxidative ageing
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Reduced test duration of weeks to months
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Saving of time and energy
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Leaching of stabilisers by aqueous test liquid
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Adaption of pH-value possible
This accelerated test method is particularly suitable for geosynthetics, geomembranes, nonwovens, woven fabrics, woven tapes, yarns as well as pipes and plastic components.
To check whether the material quality is suitable for the application and to avoid expensive repair and maintenance costs, it is advisable to estimate the service life. In the high-pressure autoclave test, samples are exposed to an aqueous medium at an elevated temperature and increased oxygen overpressure. After certain time intervals, samples are removed and subjected to index tests.
At the same time, the oxygen pressure and thus the oxygen consumption due to the oxidation of the sample is continuously recorded. This can give an indication of the start of the ageing process after the stabilizers have been used up. The greater availability of oxygen leads to accelerated thermo-oxidative ageing and to reasonable test times of weeks to months until the failure criterion is reached. Using 3D or Arrhenius evaluation of the failure times under different test conditions, a service life estimate is obtained under application conditions.
Further details
- Test temperature of 60 °C to 100 °C
- Oxygen overpressure of 0.5 bar to 50 bar
- pH 3 to pH 10
- DIN EN ISO 13438
Geosynthetics - Screening test method for determining the resistance of geotextiles and geotextile-related products to oxidation - HR10.01
Pipes made of polyethylene, PE 100-(RC)Ox with high thermo-oxidative resistance for applications for higher temperatures and long service lives – technical requirements and test - ÖBV-Guideline – Waterproofing
- Polyethylene (PE)
- Polypropylene (PP)
- Polyvinyl alcohol (PVA)
- Ethylene propylene diene monomer (EPDM)
- etc.
- Mechanical tests, e.g. tensile test
- Oxidation-induction-time (OIT)
- Oxidation-onset-temperature (OOT)
- Infrared spectroscopy (IR)
- Viscosity number (VZ)
- Melt flow rate, melt volume rate (MFR, MVR)
- etc.
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SKZ – Testing GmbH
Friedrich-Bergius-Ring 22
97076 Würzburg
Tel. +49 931 4104-0
