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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ASTM D QUV | Burch
Users atm this standard are expressly advised that determination of the validity of any such patent rights, and x4329-05 risk of infringement of such rights, are entirely their own responsibility. Current edition approved July 15, Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Signicant factors include regulation of line voltage, temperature of the room in which the device operates, temperature control, and condition and age of the lamp.
You may delete a document from your Alert Profile at any time. Conduct these round robins in accordance with Practice E or Practice D and include a statistically representative sample of all laboratories or organizations who would normally conduct the exposure and property measurement. All concerned parties must agree asm the control material used. We have no amendments or corrections for this standard.
If four specimens are stacked vertically, then the specimens should be repositioned vertically three times during the test. For instance, if two specimens are stacked vertically in each holder, then the top and bottom specimens should switch places halfway through the test. Already Subscribed to this document. The exposure used in this practice is not intended to simulate the deterioration caused by asfm weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure.
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Unless supplied with a specic backing as an integral part of the test, specimens shall be mounted so that only the minimum specimen area required for support by the holder shall be covered. When a single exposure period is used, select a time or radiant exposure that will produce the largest performance differences between the test materials or between the test material and the control material. astj
ASTM D-4329-05 QUV
This standard is not included in any packages. These cycles would be continued for extended periods of time – up to thousands of hours – simulating even longer periods of time in the real world. Please first log in with a verified email astj subscribing to alerts. Subscription pricing is determined by: Obtain mutual agreement between all concerned parties for the specic exposure cycle used.
When specimens are removed from the exposure apparatus for 24 h or more and then returned for additional exposure, report the elapsed time as noted in accordance with Section 9.
Last previous edition approved in as D – Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend.
This standard is also available to be included in Standards Subscriptions. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the d432905 shown below.
This method is preferred over evaluating materials after an arbitrary exposure time or radiant exposure. It is recommended that deionized water be used for water used to produce condensation.
ASTM D – 05 Standard Practice for Fluorescent UV Exposure of Plastics
Measure ambient temperature at a maximum distance of mm [6 in. The standard sample holders can hold one sample 3 x 12 inches 75 x mm or two samples 3 x 6 inches 75 x mm. Operate the device continuously.
Originally approved in This standard is subject to revision at any time by the responsible technical committee and must be reviewed every ve years and if astn revised, either reapproved or withdrawn. NOTE 6—An example of a statistical analysis using multiple-laboratory and exterior exposures to calculate an acceleration factor is described by Simms. However, performance comparisons under the controlled conditions of accelerated weathering can be compared to documented performance of materials and coatings that have experienced extended periods of end use exposure.
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