ASTM D/DM: Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation. Designation: D – 07 Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation1 This standard is issued. ASTM D/DM Standard Practice for Testing Water Resistance of Coatings Using Controlled Condensation. standard by ASTM.
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The test is therefore useful for evaluating coatings alone or complete coating systems. Historical Version s – view previous versions of standard. Summary of Practice 3. Do not leave the specimens in the apparatus at the conclusion of the test as the specimens can remain wet for hours, or even days, when the apparatus is turned off.
If the test panels overshadow the upper shelf, do not put test panels on the upper shelf. Mount coated metal panels with the coating to be tested facing the inside of the chamber.
Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM X4585 Headquarters.
Automatic drying requires the apparatus described in d455. Failure in a condensation test may be caused by a number of factors including a de? Remove only as many specimens as can be rated within the speci? Materials thicker than 8 mm 3?
ASTM D 控制冷凝法对涂层耐水性试验方法_百度文库
This practice is derived from research of the Cleveland Society for Coatings Technology. A number in parentheses indicates the year of last reapproval.
It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. Such control specimens can provide aztm of changes in test severity in a given apparatus, and can indicate variations in test severity between different apparatuses.
Vents, approximately 3 to 5 mm 0. The removal of specimens for inspections during operation is permitted. The substrate composition and surface preparation, specimen preparation, and the number of specimens should be agreed upon prior to testing.
Current edition approved June 1, Other temperatures may be used provided that the temperature is reported in conformance with Section 8. Your comments will receive careful consideration at a meeting of the responsible technical committee, which you may attend. These tests usually result in a pass or fail determination but the degree of failure also may be measured. Check the samples periodically to make sure condensation is occurring. Originally approved in A coating system is considered to pass if there is no evidence of water-related failure after a speci?
NOTE 4—A 3 mm glass plate in place of a sample will work to monitor whether condensation is occurring. Condensate usually seals cracks or holes smaller than 1 mm 0.
ASTM International – Standard References for ASTM D / DM – 18
Link to Active This link will always route to the current S4585 version of the standard. While corrosion products will drain into the water bath, they are not carried into the vapor that condenses on the test specimens. These tests usually result in a pass or fail determination but the degree of failure also may be measured.
Locate the chamber away from 4d585 vents and direct drafts. The test is therefore useful for evaluating coatings alone or complete coating systems. The quality of the water in the pan does not affect the test since the evaporation and condensation process yields distilled water, but the use of tap water can result in the accumulation of residues in the water pan.
Rate specimens for changes in color, blistering, etc. Practice G 53 has been replaced by Practice G While corrosion products will drain into the water bath, they are not carried into the vapor that condenses on the test specimens. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every?
Certain substrates may deform from the heat and moisture. Coated wood specimens may be mounted in the same way. However, it is possible to test the blister resistance of house coatings on wood specimens by mounting the uncoated wood surface facing the inside of the chamber.
Cleveland Condensing Type Cabinet
The specimens should be mounted to avoid gaps between specimens that allow heat and moisture to escape. It does not specify specimen preparation, speci? Last previous edition approved in as D — Condensation is produced by exposing one surface of a coated specimen to a heated, saturated mixture of air and water vapor, while the reverse side of the specimen is exposed to the cooling effect of room temperature air. If you feel that your comments have not received a fair hearing you should make your views known to the ASTM Committee on Standards, at the address shown below.
Maximum thickness is 8 mm 3? It is the responsibility of the user of this aztm to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. Drying periods should be at least 4 h long. When removing a specimen for inspection, replace it with a blank so that the test conditions are not altered. However, it is possible x4585 test the blister resistance of house paints on wood specimens by mounting the uncoated wood surface facing the inside of the chamber.