ASTM D4585 PDF

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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Historical Version s – view previous versions of standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are not provided as part of the standard.

Mount coated metal panels with the coating to be tested facing the inside of the chamber. Materials thicker than 8 mm 3?

ASTM International – Standard References for ASTM D / DM – 18

The test is therefore useful for evaluating coatings alone or complete coating systems. Remove only as many specimens as can be rated within the speci? Automatic drying requires the apparatus described in 5. The specimens form the roof or walls of the test chamber so that the back sides of the specimens are exposed to the cooling effects of room temperature air. While corrosion products will drain into the water bath, they are not carried into the vapor that condenses on the test specimens.

It x4585 not specify specimen preparation, specific test conditions, or evaluation of results.

However, it is possible to test the blister resistance of house paints on wood specimens by mounting the uncoated wood surface facing the inside of the chamber. 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.

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Evaluate specimens no less than 5 min and no more than 10 min after removal from test, as the effects from water exposure can change within a short time. Your comments are invited either for revision of this standard or for additional standards and should be addressed to ASTM International Headquarters.

Current edition approved June 1, The test specimens are inclined so that condensate runs off the test surface by gravity and is replaced by fresh condensate in a continuous process during the condensate cycle.

Cleveland Condensing Type Cabinet

Work Item s – proposed revisions of this standard. The substrate composition and surface preparation, specimen preparation, and the number of specimens should be agreed upon prior to testing. Drying periods should be at least 4 h long.

Condensate usually seals cracks or holes smaller than 1 mm 0. This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Last previous edition approved in as D — A coating system is considered to pass if there is no evidence of water-related failure after a speci? Various types of tape can be used to seal the gaps that develop when the specimen deforms. 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.

Individual reprints single or multiple copies of this standard may be obtained by contacting ASTM at the above address or at phonefaxor service astm. 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.

ASTM D 控制冷凝法对涂层耐水性试验方法_百度文库

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.

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A coating system is considered to pass if there is no evidence of water-related failure after a specified period of time.

The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. This practice is derived from research of the Cleveland Society for Coatings Technology. While corrosion products will drain into the water bath, they are not carried into the vapor that condenses on the test specimens. It does not specify specimen preparation, speci?

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. Link to Active This link will always route to the current Active version of the standard.

The values given in parentheses are for information only. Maximum thickness is 8 zstm 3? When removing a specimen for inspection, replace it with a blank so that the test conditions are not altered. A superscript epsilon e indicates an editorial change since the last revision or reapproval.

The water quality should be agreed upon between the customer and the supplier for running this test. NOTE 4—A 3 mm glass plate in place of a sample will work to monitor whether condensation is occurring.

A number in parentheses indicates the year of last reapproval.