ASTM D4329-05 PDF

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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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. Accelerated weathering provides exposed samples for comparison to unexposed control samples. You can download and open this file asrm your own computer but DRM prevents opening this file on another computer, including a networked server. Calculate retention of characteristic property in accordance with Practice D when it is reported.

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Often several exposure times such as, and hours also will be compared to each other. 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. Obtain mutual agreement between all concerned parties for the specic exposure cycle used.

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any time by the responsible technical committee and must be reviewed every ve years and if not revised, either astj or withdrawn.

Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries. This standard is not included in any packages. Moisture is provided e4329-05 forced condensation, and temperature is controlled by heaters. The values given in brackets are for information only. NOTE 6—An example of a statistical analysis using multiple-laboratory and exterior exposures to calculate an acceleration factor is described by Simms.

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The exposure used in this practice is not intended to simulate the deterioration caused by localized weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure. Standards can be obtained from appropriate standard authorities.

ASTM D – 05 Standard Practice for Fluorescent UV Exposure of Plastics

Attach porous specimens to a solid backing such as aluminum that can act as a vapor barrier. Suggested aluminum alloys are, or Originally approved in This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat. The asfm given in brackets are for information only.

Therefore, no reference to the use of this practice should be made unless accompanied by a report prepared in accordance with Section 8 that describes the specic operating conditions used. Send us a request Need help or have a question?

Hemispherical on 37 Degree Tilted Surface 2. 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. This practice also covers the preparation of test specimens, the test conditions best suited for plastics, and the ast of test results. A number in parentheses indicates the year of last reapproval.

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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.

If the document is revised or amended, you will be notified by email. 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 adtm holder shall be covered.

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If four specimens are stacked vertically, then the specimens should be repositioned vertically three times during the test. Testing Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.

Periods of Exposure and Evaluation of Test Results 8. 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.

Inspection Validating the specifications, value and safety of your raw materials, products and axtm.

ASTM D-4329-05 QUV

Instrumental measurements are recommended whenever possible. Already Subscribed to this document.

No direct correlation can be made between accelerated weathering duration and actual outdoor exposure duration.

Current edition approved July 15,