ASTM D1435 PDF
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
|Published (Last):||19 July 2016|
|PDF File Size:||20.80 Mb|
|ePub File Size:||13.26 Mb|
|Price:||Free* [*Free Regsitration Required]|
ASTM D – 13 Standard Practice for Outdoor Weathering of Plastics
Add to Alert PDF. It shall always be used in relation to an end-use system rather than as a standard mounting method. NOTE 9—The average UV radiant exposures shown d14435 subtropical and desert climates are based on several years of measurement in these test environments.
As the voice of the U. It is the responsibility of the d4135 of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
ASTM D1435 – 13
NOTE 4—At-latitude exposure provides maximum annual total solarradiant exposure at most non-subtropical sites. The area beneath and in the vicinity of the weathering racks should be typical of the ground cover in that climatological area. If the document is revised or amended, you will be notified by email. Your Alert Profile lists the documents that will be monitored. 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.
Note 2 — This standard and ISO For instance, summer exposures are generally more severe than winter exposures. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. Link to Active This link will always route to the current Active version of the standard.
Several years of repeat exposures are needed to get an average test result for a given location.
Aluminum extruded shapes have been found to be suitable. This method of mounting is shown in Fig. Fasteners used to attach specimens to the test rack shall provide for secure attachment but allow asfm to expand or contract with thermal changes, moisture absorption or desorption, or plasticizer loss. 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.
Need more than one copy? The angle of the exposure rack relative to the horizontal can vary depending upon the end-use conditions that are being evaluated. You can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server.
The exposure aperture of each frame shall be of sufficient size to expose the entire test area of each specimen when sufficient specimens are contained. This procedure will vary with materials, but it must be uniform in a series of tests on one material to provide comparative results.
Table 1 shows typical UV radiant exposures for 12 months in subtropical and desert climates.
Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard. This standard is also available to be included in Standards Subscriptions.
Several years of repeat exposures are needed to get an d143 test result for a given location. 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. Last previous edition D — Note 1 — See Practice G24 for aging under glass.
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. The actual yearly values may vary widely from Table 1. It is intended for use with finished articles of commerce as well as with all sizes and shapes of d143 specimens. Seasonal effects are averaged in exposures of several years.
This standard has been approved for use by agencies of the Department of Defense. The effect of backing is highly signi? 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. Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm.