ISO 4892 Accelerated Aging Tests of Plastics

Product Sufficiency Tests

ISO 4892 Accelerated Aging Tests of Plastics

As part of the industrial services offered by EUROLAB Laboratory for UV testing, ISO 4892 standardt series; Offers sun exposure simulations. ISO 4892 – Methods of Exposure to Laboratory Light Sources – is a four-part standard covering different light sources.

ISO 4892 Accelerated Aging Tests of Plastics

  • Part 1: General guidance
  • Part 2: Xenon arc exposure
  • Part 3: Exposure to fluorescent UV
  • Part 4: Carbon arc exposure

ISO 4892-1
Plastics-Laboratory light sources exposure methods-Part 1:General guide.
This section of ISO 4892 provides information and general guidance on the selection and operation of exposure methods detailed in the following sections. It also describes general performance requirements for devices used to expose plastics to laboratory light sources. Information on performance requirements is for manufacturers of artificial accelerated aging or artificial accelerated irradiation devices. NOTE In this part of ISO 4892, the term "light source" refers to radiation sources that emit UV radiation, visible radiation, infrared radiation, or any combination of these types of radiation. This part of ISO 4892 also provides information on the interpretation of data from artificial accelerated weather exposures or artificial accelerated irradiation exposures.

ISO 4892-2
Plastics-Laboratory radiation exposure methods-Part 2: Xenon arc lamp.
EN ISO 4892-2:2013 specifies methods for exposing samples to xenon arc light in the presence of moisture to reproduce the corrosion effects (temperature, humidity and/or wetting) that occur when materials are exposed to daylight in real end-use environments or to real end-use environments. to the sunlight filtering through the windowpane.

ISO 4892-3
Plastics-Laboratory radiation exposure methods-Part 3: Fluorescent UV lamps.
This part of ISO 4892 specifies methods for exposing samples to fluorescent UV radiation, heat, and water in apparatus designed to simulate the effects of corrosion that occurs when materials are exposed to global solar radiation or solar radiation in real end-use environments. window glass. Samples are exposed to fluorescent UV lamps under controlled environmental conditions (temperature, humidity and/or water). Different types of fluorescent UV lamp can be used to meet all the requirements for testing different materials. Sample preparation and evaluation of results are covered in other International Standards for certain materials. General guidance is given in ISO 4892-1. NOTE: Fluorescent UV lamp exposures for paints, varnishes and other coatings are defined in ISO 11507.

ISO 4892-4
Plastics - Methods of exposure to laboratory radiation sources - Part 4: Carbon arc lamps with open flames.
ISO 4892-4:2013 specifies methods for exposing samples to open-flame carbon arc lamps in the presence of moisture to reproduce the weathering effects that occur when materials are exposed to sunlight in real end-use environments or to sunlight filtered through window glass.

ISO 4892 is equivalent to the sum of the three ASTM standards for accelerated solar aging testing;

  • ASTM G153: Carbon arc
  • ASTM G154 : Fluorescent light
  • ASTM G155 : Xenon arc

Carbon arc exposure is the oldest of the wood exposure types and has lost much popularity since the introduction of Fluorescent and Xenon arc exposure as these two UV light sources offer numerous advantages over this ancient UV simulation.

The equipment required for testing according to ISO 4892 for both xenon arc and fluorescent light is equipped with systems that simulate the relative spectral radiation of daylight in the ultraviolet and visible regions of the spectrum for indoor or outdoor exposure depending on specific settings. Both methods will expose samples to varying levels of light, heat, relative humidity, and water under controlled environmental conditions that need to be defined. Each technique has its pros and cons, and this should be considered when devising a test plan.

 

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