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Multiple Choice Questions on Coating Failures |
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| Questions 1 - 5 |
Page 1 of 2 |
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1. |
Failure of a coating by chalking is a |
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design-related failure |
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formulation-related failure |
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adhesion-related failure |
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application-related failure |
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2. |
To minimize chalking, which one of the following is the best method? |
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To use a amine epoxy or epoxy ester coating |
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To completely replace the coating |
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To use epoxy ester top coats with a chalk resisting pigment |
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| [ ] | To provide top coatings of polyurethane with chalk resistance binder | |
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3. |
In a failure called alligatoring the surface of a coating hardens and shrinks at a much faster rate than the body of the coating. To avoid this failure, which would be the best method? |
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Apply a thicker coating |
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Apply a soft primer over a hard coat |
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The coating should be reinforced with a reinforcing pigment |
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| [ ] | The coating should be reinforced with an inhibitor pigment | |
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4. |
When highly filled coatings are applied heavily, which one of the following defect is predominant? |
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Alligatoring |
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Chalking |
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Mud Cracking |
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Erosion |
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5. |
If an oil, such as linseed oil, is spilt over a heavily applied coating, which is allowed to dry before the oil is cleaned, a coating defect develops. This coating defect is called |
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Wrinkling |
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Cracking |
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Checking |
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Discoloration |
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