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.
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This cycle may not adequately simulate the effects of outdoor exposure. Where is it tested? Adherence to the standard is mandatory across the GCC region and globally. The measurement data used to establish these set points was inaccurate, due to an error in calibration on the part of one manufacturer. The previous set points were 0. When specimens are removed from the exposure apparatus for 24 h or more, then returned for additional exposure, report the elapsed time as noted under Section What is the test?
Attach porous specimens to a solid backing such as aluminum that can act as a vapor barrier. Conduct these round robins according to Practice E or D and include a statistically representative sample of all laboratories or organizations that would normally conduct the exposure and property measurement. 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.
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. Do not use arbitrary acceleration factors relating time in an exposure conducted according to this practice and time in an outdoor environment because they can give erroneous information. Other irradiance levels may be used, but must be described in the report.
Note Previous versions of this practice referenced fluorescent UV devices described by Practice G 53, which described very specific equipment designs. The set points shown in this edition of D do not change the actual irradiances that have been historically used by these users.
Work Item s – proposed revisions of this standard. All references to exposures in accordance with this practice must include a complete description of the test cycle used. Inspection Validating the specifications, value and safety of your raw materials, products and assets. The measurement data used to establish these set points was inaccurate, due to an error in calibration on the part of one manufacturer. Industrial maintenance coatings G. Thereafter the simulation, the GRP laminate is physically inspected and compared to a control specimen.
Current edition approved July 1, v4587 Water resistance of th This practice also covers the preparation of test specimens, and the evaluation of test results. A superscript epsilon e indicates an editorial change since the last revision or reapproval. 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.
Do not place the apparatus near a heat source such as an oven. It is the responsibility of the user of this standard to establish appropriate safety and health practices and asm the applicability of regulatory limitations prior to use. D Temperature is at equilibrium for either an e4587 or insulated black panel, although the response of the insulated black panel might be slower than that for the uninsulated black panel.
The set points shown in this edition of D do not change the actual irradiances that have been awtm used by these users. Wstm G 53 has been withdrawn and replaced by Practice Gwhich describes performance criteria for all exposure devices that use laboratory light sources, and astn Practice Gwhich gives requirements for exposing nonmetallic materials in?
The previous set points were 0. A The cycles described are not listed in any order indicating importance, and are not necessarily recommended for the applications listed. Enabling you to identify and mitigate the intrinsic risk in your operations, supply chains and business processes. Consider product use requirements when selecting appropriate methods.
NOTE 10—For some materials, changes may continue after the speci- A number in parentheses indicates s4587 year of last reapproval. 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. A QUV test chamber uses fluorescent lamps to provide a radiation spectrum centered in the ultraviolet wavelengths.
Accelerated Weathering (QUV) ASTM G, ASTM D, ASTM D, ISO
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. Note 1—Previous versions of this practice referenced fluorescent UV devices described by Practicewhich described very specific equipment designs.
Turn the device off before removing panels for inspection. Typically, flat plaques or disks are used for accelerated weathering studies.
Accelerated Weathering (QUV) ASTM G154, ASTM D4329, ASTM D4587, ISO 4892
Measure ambient temperature at a maximum distance of mm 6 in. Link to Active This link will always route to the current Active version of the standard. Therefore, no reference to the use asrm this practice shall be made unless accompanied by a report prepared according to Section 10 that describes the specific operating conditions used.
This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat.
Additional intervals and periods of condensation may be substituted upon agreement among the concerned parties.