1964 Exposure Test of Porcelain Enamels on Aluminum: Three Year InspectionU.S. National Bureau of Standards, 1970 - 11 pages An exposure test of porcelain enamels on aluminum was initiated by the National Bureau of Standards and the Porcelain Enamel Institute in 1964.The enamels were returned from the exposure sites to the laboratory at NBS to be measured for changes in gloss and col * or after exposures of six months, one year, and three years.Changes were found to be greatest at Kure Beach and least at Montreal and Los Angeles, with moderate changes occurring at Washington and New York.Although the boiling citric acid test is used as an acceptance test for these enamels, the correlation with color change, particularly at Kure Beach, was not as good as expected.A cupric chloride test was developed which shows an improvement in this correlation.(Author). |
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Results 1-5 of 5
Page 3
... values and is re- ported as color retention which is 100 minus the color change in NBS units . 3.1 . Visual Observation of Enamels a . Amount of Soil Retained A visual examination revealed that enamels exposed at New York City had the ...
... values and is re- ported as color retention which is 100 minus the color change in NBS units . 3.1 . Visual Observation of Enamels a . Amount of Soil Retained A visual examination revealed that enamels exposed at New York City had the ...
Page 4
... values were more variable than the color - retention values , the remainder of this report will be based primarily on color retention . 3.3 . Comparison of Exposure Sites The color - retention data were subjected to a two- sided sign ...
... values were more variable than the color - retention values , the remainder of this report will be based primarily on color retention . 3.3 . Comparison of Exposure Sites The color - retention data were subjected to a two- sided sign ...
Page 5
... values for these colors ( bottom of table 5 ) indicated no consistent correlation between color retention and initial gloss . 3.6 . Effect of Coating Thickness The average color retention for the one- and two- coat enamels ( top part of ...
... values for these colors ( bottom of table 5 ) indicated no consistent correlation between color retention and initial gloss . 3.6 . Effect of Coating Thickness The average color retention for the one- and two- coat enamels ( top part of ...
Page 9
... value of boiling acid solubility . The relatively poor correlation between color re- tention and boiling acid solubility led to the develop- ment of another test which could be useful in pre- dicting the color retentions of these ...
... value of boiling acid solubility . The relatively poor correlation between color re- tention and boiling acid solubility led to the develop- ment of another test which could be useful in pre- dicting the color retentions of these ...
Page 10
... values are plotted as a function of the color - retention values after three years ' exposure in figure 5. The correlation is improved over that obtained for the boiling acid solubility as indicated by the smaller residual standard ...
... values are plotted as a function of the color - retention values after three years ' exposure in figure 5. The correlation is improved over that obtained for the boiling acid solubility as indicated by the smaller residual standard ...
Common terms and phrases
1964 Exposure Test 25 cents accordance with ASTM acid resistance acid solubility test acid spot test AG-C Angeles Montreal ASTM Book ASTM designation E-376 automatic data processing Average color retention boiling acid solubility boiling cupric chloride Book of Standards Building Science Series Bureau of Standards change in NBS citric acid spot color change color-retention data correlation between color cupric chloride test Eddy Current enamel colors Enamel Kure Beach enamel systems enamels exposed enamels included enamels on aluminum exposed at Kure gloss and color gloss range high gloss enamels initial gloss Interrelations Between Cement Kure Beach Washington low gloss enamels Medium minus the color Montreal Los Angeles National Bureau nature-tone enamels NBS units percentage gloss retained porcelain enamels Portland Cement Resistance of Porcelain RETENTION AFTER 3-YEARS retention is 100 retention of porcelain sign test Spalling specimens specular gloss spot test ratings Test of Porcelain Washington New York Weather Resistance York Montreal