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):||10 July 2014|
|PDF File Size:||12.47 Mb|
|ePub File Size:||14.45 Mb|
|Price:||Free* [*Free Regsitration Required]|
This standard has been approved for use by agencies of the Department of Defense. Exposure test specimens should be large enough that mounting d135 may be removed where evaluation test results would otherwise be affected.
Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. 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 exposure aperture of each frame shall be of sufficient size to expose the entire test area of each specimen when sufficient specimens are contained.
Standards Subsctiption may be the perfect solution. In no case shall the specimen holder constitute a backing for that portion of the material to be evaluated. It is intended for use with finished articles of commerce as well as with all sizes and shapes of test specimens.
ASTM D1435 – 13
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. Precision and Bias This method d1345 mounting is shown in Fig.
Historical Version s – view previous versions asmt standard. Proceed to Checkout Continue Shopping. 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.
Your Alert Profile lists the documents that will be monitored. They shall be covered with inert wrapping to exclude light exposure during the exposure period.
ASTM D – 94 Standard Practice for Outdoor Weathering of Plastics
Note 1 — See Practice G24 for aging under glass. It is intended for use with finished articles of commerce as well as with all sizes and shapes of test specimens. NOTE 9—The wstm UV radiant exposures shown for subtropical and desert climates are based on several years of measurement in these test environments. Exposures in several locations with different climates that represent a broad range of anticipated service conditions are recommended.
Originally published as D — 56 T. Several years of repeat exposures are needed to get an average test result for a r1435 location.
ASTM D – 13 – Standard Practice for Outdoor Weathering of Plastics
We have no amendments or corrections for this standard. NOTE 8—The results for exposure stages of less than one year will depend on the season of the year in which the exposure was made.
Need more than one copy? 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.
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. 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.
Subscription pricing is determined by: The values given in parentheses are for information only. C1435 can download and open this file to your own computer but DRM prevents opening this file on another computer, including a networked server. 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.
Table 1 shows typical UV radiant exposures for 12 months in subtropical and desert climates. In desert areas in which sand is the prevailing ground cover, coarse gravel is recommended to prevent abrasion and signi?
NOTE 4—At-latitude exposure provides maximum annual total solarradiant exposure at most non-subtropical sites. Preferably, mark both specimen and specimen holder on the side not exposed to weather, as advanced weathering can obscure even deeply scribed marks.
The structural members of the test racks shall not constitute a backing to the specimens under test. All materials of an unknown end use application will normally be run in an 5. Calculate retention of characteristic property according to Practice D when it is reported.