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 defines fluorescent UV and condensation exposures of paint and related coatings,equivalent to ISO 31 Aug ASTM D _UV_resistance – Designation: D – 05 Standard Practice for Fluorescent UV-Cond.
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Work Item s – proposed revisions of this standard. This practice is intended d4578 induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat.
Table 1 describes commonly used test conditions. Practice has been withdrawn and replaced by Practice Gwhich describes performance criteria for all exposure devices that use laboratory light sources, and by Practice Gwhich gives requirements for exposing nonmetallic materials in fluorescent UV devices.
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. The standard is primarily based on the external integrity and appearance of d45887 GRP enclosures when exposed to outdoor conditions over an extended period.
Interlaboratory comparisons are valid only when all laboratories use the same design of fluorescent UV device, lamp, and exposure conditions. Moisture is provided by forced condensation, and temperature is controlled by heaters.
Practice G 53 has been withdrawn and replaced by Practice Gwhich describes performance criteria for all exposure devices that use laboratory light sources, and by Practice Gwhich gives requirements for exposing nonmetallic materials in fluorescent UV devices. D Temperature is at equilibrium for either an uninsulated or insulated black panel, although the response of the insulated black panel might be slower than that for the uninsulated black panel.
This practice also covers the preparation of asym specimens, and the evaluation of test results. Due to copyright restrictions, we are not able to provide copies of standards. ASTM International is an international standards organization that develops and publishes voluntary consensus technical standards for a wide range of materials, products, systems, and services.
Work Item s – proposed revisions of this standard. Industrial maintenance coatings G. The d45877 sample holders can hold one sample 3 x 12 inches 75 x mm or two samples 3 x 6 inches 75 x mm.
ASTM D | Rycobel
The GRP laminate should not display any deterioration like d587, flaking, wrinkling, blistering or cracking. This practice also covers the preparation of test specimens, and the evaluation of test results. Refer to Practice G for detailed information on the caveats applicable to use of results obtained according to this practice. The measurement data used to establish these set points was inaccurate, due to an error in calibration on the part of one manufacturer.
If in doubt, users should consult the manufacturer of their device for clarification. Our glass reinforced polyester laminate is tested in a controlled laboratory with a simulation of accelerated weather with an exposure cycle of 8 hours UV followed sstm 4 hours condensation continuously. 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.
The type and rate of degradation and the performance rankings produced in exposures to fluorescent UV lamps can be d44587 different from those produced by exposures to other types of laboratory light sources.
Therefore, no reference to the use of this practice shall be made unless accompanied by a report prepared according to Section 10 that describes the specific operating conditions used. Active view current version of d45587.
Our laminate is type tested at the renowned international testing laboratory Exova to certify our products to be weather resistant. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
A The cycles described are not listed in any order indicating importance, and are not necessarily recommended for the applications listed. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability zstm regulatory limitations prior to use.
Accelerated Weathering by QUV
Link to Active This link will always route to the current Active version of the standard. Adherence to the standard is mandatory across the GCC region and globally. Test results will depend upon the care that is taken to operate the equipment according to Practice G The previous set points were 0. 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.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. The values given in parentheses are for information only.
Often several exposure times such as, and hours also will be compared to each other. Our glass reinforced polyester laminate, which is the primary material across our product range is constructed with a protective layer of gelcoat having a high thickness of – microns.
However, for users of equipment made by another manufacturer, the irradiance control system did not have the measurement inaccuracies described above, so running at the new set points will represent a change in the actual irradiance of the test. B The irradiance set point given is typical for devices operated without irradiance control.
Note Previous versions of this practice referenced fluorescent UV devices described by Practice G 53, which described very specific equipment designs. Note 3—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 The ability of a paint s4587 coating to resist deterioration of its physical and optical properties caused by exposure to light, heat, and water can be asttm significant for many applications.
Accelerated weathering simulates damaging effects of long term outdoor exposure of materials and coatings by exposing test samples to varying conditions of the most aggressive components of weathering – ultraviolet radiation, moisture and heat. What is the test? 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.
C Previous editions of Practice D contained non-mandatory irradiance set points in Table 1 that were commonly used in the industry.