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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Page 2
... specular gloss was measured in accordance with ASTM designation C - 346 . b The thickness was measured in accordance with ASTM designation E - 376 . The boiling acid solubilities were determined in accordance with ASTM designation C ...
... specular gloss was measured in accordance with ASTM designation C - 346 . b The thickness was measured in accordance with ASTM designation E - 376 . The boiling acid solubilities were determined in accordance with ASTM designation C ...
Page 3
... Gloss and Color The 45 - degree specular gloss of the enamels was measured [ 5 ] at four orientations near the center of the specimen before and after exposure . The average initial gloss for each enamel is given in table 1. The gloss ...
... Gloss and Color The 45 - degree specular gloss of the enamels was measured [ 5 ] at four orientations near the center of the specimen before and after exposure . The average initial gloss for each enamel is given in table 1. The gloss ...
Page 4
... gloss - retained data for the enamels. 96 96 92 226 Color Retention 905 94 90 100 98 T 1 88 0.0 0.5 1.0 1.5 2.0 2.5 ... specular gloss of 35 or less ; medium , be- tween 36 and 69 ; and high , 70 or over . The average color - retention ...
... gloss - retained data for the enamels. 96 96 92 226 Color Retention 905 94 90 100 98 T 1 88 0.0 0.5 1.0 1.5 2.0 2.5 ... specular gloss of 35 or less ; medium , be- tween 36 and 69 ; and high , 70 or over . The average color - retention ...
Page 10
... Specular gloss Thick- ness b Boiling acid solubility • Acid d spot test mils mg / in AM - 2 Lt. brown_ 19.5 2.3 10.0 AM - 3 Blue . 10.5 2.6 13.0 AM - 4 Lt. blue .. 7.6 2.1 9.3 AM - 5 Green . 17.4 2.7 13.6 AM - 6 Lt. green .. 16.5 3.1 ...
... Specular gloss Thick- ness b Boiling acid solubility • Acid d spot test mils mg / in AM - 2 Lt. brown_ 19.5 2.3 10.0 AM - 3 Blue . 10.5 2.6 13.0 AM - 4 Lt. blue .. 7.6 2.1 9.3 AM - 5 Green . 17.4 2.7 13.6 AM - 6 Lt. green .. 16.5 3.1 ...
Page 11
... gloss or coating thickness . 5. The correlation between color retention and boil- ing acid solubility was poor . 6 ... Gloss of Ceramic Materials , 45 - Deg . Specular , C - 346 , ASTM Book of Standards , Pt . 13 , ( 1968 ) . [ 6 ] ...
... gloss or coating thickness . 5. The correlation between color retention and boil- ing acid solubility was poor . 6 ... Gloss of Ceramic Materials , 45 - Deg . Specular , C - 346 , ASTM Book of Standards , Pt . 13 , ( 1968 ) . [ 6 ] ...
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