TT-P-1757B
Specular gloss Primer coating Primer coating with topcoat |
3.5.2.1 3.5.2.2 |
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4.6.4.1 4.6.4.2 |
Adhesion - wet tape |
3.5.3 |
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4.6.5 |
Flexibility |
3.5.4 |
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4.6.6 |
Lifting |
3.5.5 |
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4.6.7 |
Hydrocarbon resistance Primer coating Primer coating with topcoat Hydrocarbon resistance - flexibility |
3.6.1.1 3.6.1.2 3.6.1.3 |
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4.6.8.1.1 4.6.8.1.2 4.6.8.2 |
Water resistance Primer coating Primer coating with topcoat |
3.6.2.1 3.6.2.2 |
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4.6.8.3.1 4.6.8.3.2 |
Salt spray resistance |
3.6.3 |
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4.6.9 |
Accelerated weathering |
3.7 |
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4.6.10 |
Storage stability |
3.8 |
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Workmanship |
3.9 |
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4.6.1 Solvent analysis. The analysis of the solvent of type I primer coating shall be in accordance with 4.6.1.1 through 4.6.1.2.5. The volatile content of type II primer coating shall be determined in accordance with ASTM-D3960.
4.6.1.1 Isolation of solvents (type I primer coating only). Isolate the solvent portion of the type I primer coating in accordance with ASTM-D3272 for subsequent analysis.
4.6.1.2 Analysis of solvent composition (type I primer coating only). The analysis of the solvent portion of the type I primer coating shall be conducted in accordance with ASTM-D3271 and 4.6.1.2.1 through 4.6.1.2.3, using any gas chromatograph with a thermal conductivity detector and provisions for programmable temperature operation. The column of the gas chromatograph shall be packed and of the length specified as follows:
a. Two lengths of ΒΌ-in. (6.35 mm) diameter copper tubing:
1. One 8 ft. (2.44 m) long, packed with 20 percent by weight N, N-Bis (2-cyanoethyl)
formamide on 60 to 80 mesh (250 to 177 mm) Chromosorb P.
2. One 12 ft. (3.66 m) long, packed with 30percent by weight diethylene glycol succinate on 60 to 80 mesh (250 to 177 mm) Chromosorb P.
b. The two lengths are coupled together and installed such that the sample passes through the 8 ft. (2.44 m) length first.
4.6.1.2.1 Operating conditions. The operating conditions of the chromatograph shall be as follows:
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