PV 3929
automotive accelerated weathering standards – PV 3929 – Volkswagen
PV 3929
non-metallic materials – weathering in dry, hot climate
A standard for testing the ageing behaviour of plastics (such as change in colour and/or gloss), which are likely to be subjected to weather and daylight. Samples undergo an accelerated weathering programme of a dry, hot climate and are irradiated using xenon arc light.
Filters shall be used to adapt the xenon arc light to the global irradiation with its spectral distribution of ultraviolet and visible radiation. The test conditions each describe a year cycle, with close reference to the average dose of UV radiation of nm in dry heat, climate zones such as Arizona and South Africa.
PV 3929 standard requirements
| proposed parameter range | within current operating range (yes/no) |
|
| standard ref | PV3929 | |
| irradiance | 0.68W/m² at 340nm or 75W/m² at 300-400nm | yes |
| filter system | daylight Q | yes |
| chamber temperature | 50 degrees light | yes |
| BST/BPT temperature | BPT 90 degrees light ±3 | yes |
| relative humidity | 20% | yes |
| light cycle | continuous light | yes |
| spray cycle | no spray | yes |
| test duration | 1500hrs | |
NOTE: Additional tests may be required, along with visual evaluation, if the ageing causes changes in the mechanical properties and/or cracking. Further tests may include tensile tests, determination of impact resistance, determination of hardness and microscopic examinations.
why impact?
Impact Solutions is an independent materials testing and innovative problem-solving provider. Our dynamic team is flexible and adaptable in using their diverse range of knowledge and skills to offer bespoke solutions. Members of impact’s team have over 30 years of polymer experience and are internationally regarded as product and material experts. We can often identify potential sources of weakness in products without even undertaking testing. We will work with you and believe in developing commercially focused and sustainable results for our customers.
Find out more by getting in touch with one of our experts.
