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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Therefore, no reference to the use of this practice shall be made unless accompanied by a wstm prepared according to Section 10 that describes the specific operating conditions used.
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. This practice is intended to induce property changes associated with end-use conditions, including the effects of sunlight, moisture, and heat. The measurement data used to establish these set points was inaccurate, due to an error in calibration on the part of one manufacturer. Auditing Consulting Sourcing Training.
This cycle may not r4587 simulate the effects of outdoor exposure. Accelerated weathering simulates damaging effects of long term outdoor exposure of materials and coatings. 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.
The values given in parentheses are for information only. The GRP laminate should not display any deterioration like chalking, flaking, wrinkling, blistering or cracking. However, for users of equipment ast, 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. Where retention of characteristic property is reported, calculate results according to Practice D F Typical UsesE Automotive coatingsF 2 Industrial maintenance coatingsG 3 Exterior wood coatings 4 General metal coatings 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 of regulatory limitations prior to use. B The irradiance set point given is typical for devices operated without irradiance control.
However, for users of equipment made r4587 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. The previous set points were 0. Active view current version of standard.
Additional exposure cycles are described in Practice G Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.
Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters. Refer to Practice G for detailed information on the caveats applicable to use of results obtained according to this practice. Precision and D4578 This condition requires that the procedures described in 8. Interlaboratory comparisons are valid only when all laboratories use the same design of fluorescent UV device, lamp, and exposure conditions.
Parts may be accommodated depending on size. Link to Active This link will always route to the current Active version of the standard. Refer to Practice G for detailed information on the caveats applicable to use of results obtained according to this practice. 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.
Do not place the apparatus near a heat source such wstm an oven. Assurance Testing Inspection Certification.
The standardized time period needs to consider conditioning prior to testing. Practice G 53 has been withdrawn and replaced by Practice Gwhich asm 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.
Work Item s – proposed revisions of this standard. Send us a request Need help or have a question?
The type and rate of degradation and the performance rankings produced in exposures to? NOTE 6—Since the stability of the?
Current edition approved July 1, Accelerated weathering provides exposed samples for comparison to unexposed control samples. 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 standard is primarily based on the external integrity and appearance of our GRP enclosures when exposed to outdoor conditions over an extended period.
The ability of a paint or coating to resist deterioration of its physical and optical properties caused by exposure to light, heat, and water can be very significant for many applications. Additional intervals and periods of condensation may be substituted upon agreement among the concerned parties. Obtain agreement between all concerned parties for the speci? Refer to Practice G for more information about the construction and differences between uninsulated and insulated black panels.
Select panel sizes suitable for use with the exposure apparatus. Moisture is provided by forced condensation, and temperature is controlled by heaters. Certification Formally confirming satm your products and services meet all trusted external and internal standards.
This practice also covers the preparation of test specimens, and the evaluation of test results. All concerned parties must agree on the speci? It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability 4d587 regulatory limitations prior to use.
Nondestructive methods are preferred because panels so measured d4578 not be repaired. 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.
ASTM D _UV_resistance_百度文库
A The cycles described are not listed in any order indicating importance, and are not necessarily recommended for the applications listed. Industrial maintenance coatings G. Need help or have a question?