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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Calculate retention of characteristic property in accordance with Practice D when it is reported. Users of this standard are expressly advised that determination of the validity of any such patent rights, and the risk of infringement of such rights, are entirely their own responsibility. Control of ambient temperature is particularly critical when one apparatus is stacked above another, because the heat generated from the lower unit can interfere with the operation of the units above.
You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. Signicance and Use 4. Evaluating how your products and services meet and exceed quality, safety, sustainability and performance standards.
As the voice of the U. Conduct these round robins in accordance with Practice E or Practice D and include a statistically representative sample of all d43329-05 or organizations who would normally conduct the exposure and property measurement. Attach porous specimens to a solid backing such as aluminum that can act as a vapor barrier.
Measure ambient temperature at a maximum distance of mm [6 in. This unexposed surface must not be used as part of the test area. When a single exposure period is used, zstm 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.
This standard is d432905 included in any packages. Proceed to Checkout Continue Shopping. 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.
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. If four specimens are stacked aastm, then the specimens should be repositioned vertically three times during the test.
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Asttm is recommended that at least three d4392-05 of each material be exposed to allow for statistical evaluation of results. Enabling you to identify and mitigate the intrinsic risk in your awtm, supply chains and business processes.
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.
Need more than one copy? Standards Subscriptions from ANSI provides 4d329-05 money-saving, multi-user solution for accessing standards. 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 recommended that deionized water be used for water used to produce condensation. 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.
Your Alert Profile lists the documents that will be monitored. Please first verify your email before subscribing to alerts. C4329-05 previous edition approved in as D – For instance, if two specimens are stacked vertically in each holder, then the top and bottom specimens should switch places halfway through the test. ASTM International takes no position respecting the validity of any patent rights asserted in connection with any item mentioned in this standard. You may delete a document from your Alert Profile at any time.
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ASTM D – Standard Practice for Fluorescent UV Exposure of Plastics
An exposure time that produces a signicant change in one type of material cannot be assumed to be applicable to other types of materials. Accelerated weathering provides exposed samples for comparison to unexposed control samples.
Where practical, it is recommended that specimens be sized to t specimen holders and racks supplied with the exposure apparatus. Global Reach Intertek is the industry leader with over 42, people in 1, locations in over countries.
ASTM D QUV | Burch
This standard is also available to be included in Standards Subscriptions. 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. NOTE 4—This is especially important when mechanical properties d4392-05 being investigated. Measurements visual or instrumental should be made within a standardized time period or as agreed upon between the interested parties.
Misleading results may be obtained by this method, since the masked portion of the specimen is still exposed to temperature and humidity cycles that in many cases will affect results. Current edition approved July 15, Send us a request Need help or d44329-05 a question? 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.
ASTM D-4329-05 QUV
Need help or have a question? A number in parentheses indicates the year of last reapproval.
Assurance Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes.