ASTM D defines fluorescent UV and condensation exposures of paint and related coatings,equivalent to ISO This standard is issued under the fixed designation D; the number 1 This practice is under the jurisdiction of ASTM Committee D01 on Paint and. Related. ASTM D Standard Practice for Fluorescent UV-Condensation Exposures of Paint and Related Coatings CONTAINED IN VOL. , Outlines test.
|Published (Last):||25 April 2007|
|PDF File Size:||15.83 Mb|
|ePub File Size:||6.81 Mb|
|Price:||Free* [*Free Regsitration Required]|
Through our network of over 43, people in 1, laboratories and offices in countries, Intertek provides quality and safety solutions to a wide range of industries around the world.
Reproducibility of test results between laboratories has been shown to be good when the stability of materials is evaluated in terms of performance dd4587 compared to other materials or to a control. Industrial maintenance coatings G. Link to Active This link will always route to the current Active version of the standard.
NOTE 10—For some materials, changes may continue after the speci- Do not place the apparatus near a heat source such as an oven.
Additional exposure cycles are described in Practice G NOTE 11—Fischer illustrates use of rank comparison between test and control materials in speci? Our glass reinforced polyester laminate is tested in a controlled laboratory with a simulation of accelerated weather with an exposure cycle of 8 hours UV followed by 4 hours condensation continuously. The type and rate of degradation and the performance rankings produced in exposures to fluorescent UV lamps can be much different from those produced by exposures to other types of laboratory light sources.
Need help or have a question?
The previous set points were 0. Table 1 describes commonly used test conditions.
ASTM D classification test for weather and UV resistance
How is it tested? Historical Version s – view previous versions of xstm. Formally confirming that your products and services meet all trusted external and internal standards.
Other irradiance levels may be used, but must be described in the report. Additional intervals and periods of condensation may be substituted upon ast, among the concerned parties. The standardized time period needs to consider conditioning prior to testing.
Standards can be obtained from appropriate standard authorities. Up to 20 test samples are mounted in the QUV and subjected to a cycle of exposure asttm intense ultraviolet radiation followed by moisture exposure by condensation.
What is the test? Periods of Exposure and Evaluation of Results 9. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. The acceleration factor is material dependent and is only valid if it is based on data from a sufficient number of separate exterior and laboratory accelerated exposures so that results used to relate times to failure in each exposure can be analyzed using statistical methods.
Therefore, no reference to the use of this practice shall be made unless accompanied by a report prepared according to Section 10 that describes the speci? This cycle may not adequately simulate the effects of outdoor exposure.
ASTM D _UV_resistance_百度文库
Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. When a single exposure period is used, select a time or radiant exposure that d4578 produce the largest performance differences between the test materials or between the test material and the control material.
Significant factors include regulation of line voltage, temperature of the room in which the device operates, temperature control, and condition and age of the lamps. This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat.
Accelerated weathering provides exposed samples for comparison to unexposed control samples. Therefore, no reference to the use of this practice shall be made unless accompanied by a d5487 prepared according to Section 10 that describes the specific operating conditions used.
It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results.
E Typical uses do not imply that results from exposures of these materials according to the cycle described will correlate to those from actual use conditions. NOTE 3—Additional information on sources of variability and on strategies for addressing variability in the design, execution and data analysis of laboratory accelerated exposure tests is found in Guide G The measurement data used to establish these set points was inaccurate, due to an error in calibration on the part of one manufacturer.
However, for users of equipment made by another manufacturer, the irradiance control system did not have the measurement inaccuracies described above, so running at the new set points will represent a change in the actual irradiance of the test.