D Practice for Outdoor Weathering of Plastics3 4 Discontinued; see Annual Book of ASTM Standards, Vol 5 Annual Book of. astm d 塑料的室外风化 – Designation: D – 99 Standard Practice for Outdoor Weathering of Pl. Find the most up-to-date version of ASTM D at Engineering
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As the voice of the U. Exposure test specimens should be large enough that mounting edges may be removed where evaluation test results would otherwise be affected.
The angle of the exposure rack relative to the horizontal can vary depending upon the end-use conditions that are being evaluated. Aluminum extruded shapes have been found to be suitable. If you feel that your comments have not received a fair hearing you aatm make your views known to the ASTM Committee on Standards, at the address shown below.
Proceed to Checkout Continue Shopping. The values given in parentheses are for information only. The structural members of the test racks shall not constitute a backing to the specimens under test.
NOTE 4—At-latitude exposure provides maximum annual total solarradiant exposure at most non-subtropical sites. These are dependent on the ASTM test methods for the speci? Note 1 — See Practice G24 for aging under glass. The area d1453 and in the vicinity of the weathering racks should be v1435 of the ground cover in that climatological adtm.
NOTE 9—The average UV radiant exposures shown for subtropical and desert climates are based on several years of measurement in these test environments.
All materials of an unknown end use application will normally be run in an 5. It shall always be used in relation to an end-use system rather than as a standard mounting method. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.
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. Specimen marking shall be in accordance with Practice G and shall be such that there is no interference with either the exposure or the subsequent testing.
NOTE 7—The same exposure stage by whichever method is used will not necessarily give the same changes in properties of the test specimen at different exposure sites. Calculate retention of characteristic property according to Practice D when it is reported. We have no document history for this standard.
ASTM D1435 – 13
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The exposure stages must be regarded as providing only a general indication of 1d435 degree of exposure, and the results should always be considered in terms of characteristics of the exposure site as well. This is the recommended method for determining exposure stages when polymer degradation is being evaluated. For instance, summer exposures are generally more severe than winter exposures.
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ASTM D – 13 – Standard Practice for Outdoor Weathering of Plastics
Link to Active This link will always route to the current Active version s1435 the standard. Preferably, mark both specimen d435 specimen holder on the side not exposed to weather, as advanced weathering can obscure even deeply scribed marks.
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. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? A number in parentheses indicates the year of last reapproval. Your Alert Profile lists the documents that will be monitored.
The effect of backing is highly qstm Climatological variations within these areas may include those represented by desert, seashore salt airindustrial locations, tropical, and subtropical regions, plus areas exhibiting a wide range in solar radiant energy.
ASTM D – 94 Standard Practice for Outdoor Weathering of Plastics
It cannot be assumed, therefore, that results from one exposure in a single location will be useful for determining relative durability in a different location. This standard has been approved for use by agencies of the Department of Defense. It is intended for use with?
This standard is not included in any packages. Note 2 — This standard and ISO Note 1 — See Practice G24 for aging under glass. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.
It is intended for use with finished articles of commerce as well as with all sizes and shapes of test specimens.
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The exposure aperture of each frame shall be of sufficient size to expose the entire test area c1435 each specimen when sufficient specimens are contained. NOTE 6—Sand as a ground cover may be desirable where the abrasive effects of exposure to wind-blown sand is a part of the desired exposure.
The relative durability of plastics in outdoor use can be very different depending on the location of the exposure because of differences in ultraviolet UV radiation, time of wetness, temperature, pollutants, and other factors. Standards Subscriptions from ANSI provides a money-saving, multi-user solution for accessing standards.
Fasteners used to attach specimens to the test rack shall provide for secure attachment but allow specimens to expand or contract with thermal changes, moisture absorption or desorption, or plasticizer loss.
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. The specimens are mounted in the grooves of the insulators at a?