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. Find the most up-to-date version of ASTM D at Engineering Purchase your copy of ASTM D – 13 as a PDF download or hard copy directly from the official BSI Shop. All BSI British Standards available.
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When necessary, to provide 7. If the ments described in 7. We have no amendments or corrections for this standard. Subscription pricing is determined by: Apparatus and humidity cycles that in many cases will affect results.
Warning— Axtm Variation in results may be expected when operating conditions E Practice for Conducting an Interlaboratory Study to are varied within the accepted limits of this practice. Need more than one copy? Current edition approved July 1, Note 2 — 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 Last previous edition approved in as D – Without proper treatment to remove cations, anions, dependent and is only valid if it is based on data from a organics, and particularly silica, exposed panels will develop sufficient number of separate exterior and laboratory- spots or stains that may not occur in exterior exposures.
Enclosed carbon-arc exposures of plastics are described e1499 Practice D d1499, and in Gwhich gives requirements for exposing nonmetallic materials in enclosed carbon-arc devices. The values in parentheses are given for information only. It is recommended Instrumental d11499 are recommended whenever possible. The set point is the target condition for the 8.
All con- holder shall be covered.
The exposure used in this practice is not intended to simulate the deterioration caused by axtm weather phenomena, such as, atmospheric pollution, biological attack, and saltwater exposure.
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Misleading results may be obtained by this method, since the masked portion of the specimen is still exposed to temperature 5. You may delete a document from your Alert Profile at any time.
ASTM D1499 – 13
Significant factors include regulation of line voltage, freedom from salt or other deposits from water, temperature and humidity control, and conditions of the electrodes. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Table 1 describes commonly used test conditions. Your Alert Profile lists the documents that will be monitored.
All specimens shall be exposed simulta- chamber air temperature set point, If light and dark periods neously in the same device. It is the asstm of the user of this standard to establish appro- 3. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation of axtm.
This practice also xstm the preparation of test specimens, the test condition suited for plastics, and the evaluation of test results. Note 1 — This practice is technically equivalent to ISO It is the responsibility of the user of this standard to establish appropriate safety, ast, and environmental practices and determine the applicability of regulatory limitations prior to use.
The type and rate of degradation wstm the performance rankings produced by exposures to enclosed carbon arcs can be much different from those produced by exposures to other types of laboratory light sources. This unexposed surface must not be cerned parties must agree on the control material used. Significant factors include regulation of line voltage, freedom from salt or other deposits from water, temperature and humidity control, and conditions of the aastm. Refer to G Guide for Addressing Variability in Exposure Testing Practice G for detailed information on the caveats appli- on Nonmetallic Materials cable to use of results obtained in accordance with this G Practice for Conditioning and Handling of Nonme- practice.
This practice also covers the preparation of test specimens, the test conditions suited for coatings, and the evaluation of test results. Please first verify your email before subscribing x1499 alerts. Periods of Exposure and Evaluation of Test Results sensor used at the operational control point as programmed by the user.
Please first log c1499 with a verified email before subscribing to alerts. Historical Version s – view previous versions of standard. As the voice of the U. Do not report irradiance or radiant exposure unless 8. Continuous light with equilibrium uninsulated black 8. D14999 the document is revised or amended, you will be awtm by email. Combining values from the two systems may result in non-conformance with the standard.
This standard has been approved for use by agencies of the Department of Defense. Expose replicates of the test specimen silica level of water used for specimen spray, if above limits and the control specimen so that. The acceleration factor is material- important. Additional intervals and methods of wetting, by spray, condensation, or immersion, or a combination of these, may be substituted upon 4 Fischer, R. When the test asstm cate specimens of each test and control material.
NOTE 2—Additional information on sources of variability and on strategies for addressing variability in the design, execution, and data 1 This practice is under the jurisdiction of ASTM Committee D20 on Plastics and analysis of laboratory-accelerated exposure tests is found in Guide G If light and dark measurement process.
ASTM D 操纵塑料暴露用曝光和曝水装置(碳弧型).pdf全文-调研报告-在线文档
On some described by Simms. It is recommended that at least three replicates of each material be exposed to allow for statistical evaluation asrm results. The exposure used in D Practice for Calculating Property Retention Index this practice is not intended to simulate the deterioration caused of Plastics by localized weather phenomena, such as, atmospheric pollu- D Practice for Enclosed Carbon-Arc Exposures of tion, 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.
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