The Test Protocol that was followed is an adaptation of ASTM D where 1E 1E Buy ASTM D PRACTICE FOR FLUORESCENT UV EXPOSURE OF PLASTICS from SAI Global. ASTM D Standard Practice for Fluorescent UV Exposure of Plastics. This practice covers specific procedures and test conditions that are applicable.
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This practice d3429-05 covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results.
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All specimens shall be exposed simultaneously in the same device. We have no amendments or corrections for this standard.
ASTM D-4329-05 QUV
v4329-05 It is recommended that deionized water be used for water used to produce condensation. This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the evaluation of test results. Precision and Bias Operate the device continuously. Hemispherical on 37 Degree Tilted Surface 2.
ASTM D QUV | Burch
Whether your business is local or global, we can ensure your products meet quality, health, environmental, safety, and social accountability standards for virtually any market around the world. Need more than one copy? Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries.
Suggested aluminum alloys are, or Expose replicates of the test specimen and the control specimen so that statistically signicant performance differences can be determined NOTE 8—Fischer illustrates use of rank comparison between test and control materials in specications. Auditing Consulting Sourcing Training. NOTE 5—Since the stability of the le specimen may also be timedependent, users are cautioned that over prolonged exposure periods, or where small differences in the order of acceptable limits are anticipated, comparison of exposed specimens with the le specimen may not be valid.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Parts may be accommodated depending on size.
Calculate retention of characteristic property in accordance with Practice D when it is reported. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if not revised, either reapproved or withdrawn.
A QUV test chamber uses fluorescent lamps to provide a radiation spectrum centered in the ultraviolet wavelengths. Moisture is provided by forced condensation, and temperature is controlled by asmt. The acceleration factor is materialdependent and is only valid if it is based on data from a sufficient number of separate exterior and laboratoryaccelerated exposures so that results used to relate times to failure in each exposure can be analyzed using statistical methods.
Accelerated Weathering (QUV) ASTM G154, ASTM D4329, ASTM D4587, ISO 4892
Do not use arbitrary acceleration factors relating time in an exposure conducted in accordance with this practice and time in an outdoor environment because they can give erroneous information. Measure ambient temperature at a maximum distance of mm [6 in. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
You may delete a document from your Alert Profile at any time. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of results. Typically, flat plaques or disks are used for accelerated weathering studies.
Up to 20 test samples are mounted in the QUV and subjected to a cycle of exposure to intense ultraviolet radiation followed by moisture exposure by condensation.
It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Certification Formally confirming that your products and services meet all trusted external and internal standards. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
Please first log in with a verified email before subscribing to alerts. NOTE 6—An example of a statistical analysis using multiple-laboratory and exterior exposures to calculate an acceleration factor is described by Simms.
ASTM D – Standard Practice for Fluorescent UV Exposure of Plastics
No direct correlation can be made between accelerated weathering duration and actual outdoor exposure duration. 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.
Standards can be obtained from appropriate standard authorities. The values given in brackets are for information only.
NOTE 2—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 Often several exposure times such as, and hours also will be compared to each other.