Epoxy primer
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[[Image:54_Dodge_Coronet_in_primer.jpg|right|thumb|350px|A 1954 Dodge Coronet body with a fresh coat of epoxy primer.]] | [[Image:54_Dodge_Coronet_in_primer.jpg|right|thumb|350px|A 1954 Dodge Coronet body with a fresh coat of epoxy primer.]] | ||
| + | ==Overview== | ||
Epoxy primer/sealer is a non-porous finish that is typically recommended as the first basecoat over bare steel. Various epoxy primers can also be applied over [[Fiberglassing|fiberglass]], plastic, or the black iron phosphate coating that remains after "converting" [[rust]]. Care must be taken to observe the epoxy maker's recommendations in preparing the surface over which the epoxy is applied. | Epoxy primer/sealer is a non-porous finish that is typically recommended as the first basecoat over bare steel. Various epoxy primers can also be applied over [[Fiberglassing|fiberglass]], plastic, or the black iron phosphate coating that remains after "converting" [[rust]]. Care must be taken to observe the epoxy maker's recommendations in preparing the surface over which the epoxy is applied. | ||
Real epoxy primer is a two-part mix, with a hardener that has to be added before spraying. The common epoxy paint you buy at the local hardware store in an aerosol can is not considered a true epoxy primer. | Real epoxy primer is a two-part mix, with a hardener that has to be added before spraying. The common epoxy paint you buy at the local hardware store in an aerosol can is not considered a true epoxy primer. | ||
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==Body filler and epoxy primer== | ==Body filler and epoxy primer== | ||
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===Temperature=== | ===Temperature=== | ||
| − | The temperature of the air and of the metal '''must''' be taken into account -- it must be high enough for the epoxy primer to properly cure. Note that in cold weather conditions, surface temperatures can be far lower than air temperatures. If the surface temperature drops below a particular value specified by the product manufacturer (usually around 60 degrees F) before it is fully cured, the epoxy may not properly cure even with later applications of heat. | + | The temperature of the air and of the metal '''must''' be taken into account -- it must be high enough for the epoxy primer to properly cure. Note that in cold weather conditions, surface temperatures can be far lower than air temperatures. If the surface temperature drops below a particular value specified by the product manufacturer (usually around 60 degrees F) before it is fully cured, the epoxy may not properly cure even with later applications of heat. A non-contact thermometer can accurately determine if the surface to be sprayed is being maintained at an acceptable temperature. |
===Acids=== | ===Acids=== | ||
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==Tech sheets of epoxy primers recommended for automotive use== | ==Tech sheets of epoxy primers recommended for automotive use== | ||
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| + | ===Akzo Nobel=== | ||
| + | *[http://www.globalsafetynet.com/akzonobel/pdfs/akzo_195_english.pdf SIKKENS Autosurfacer EP (Epoxy Primer) ] | ||
| + | *[http://www.globalsafetynet.com/akzonobel/pdfs/akzo_156_english.pdf LESONAL Epoxy Primer Sealer] | ||
===DuPont=== | ===DuPont=== | ||
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===Southern Polyurethanes=== | ===Southern Polyurethanes=== | ||
*[http://southernpolyurethanes.com/Tech%20Sheets/Epoxy%20Primer.htm Southern Polyurethanes Epoxy Primer] | *[http://southernpolyurethanes.com/Tech%20Sheets/Epoxy%20Primer.htm Southern Polyurethanes Epoxy Primer] | ||
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| + | ===Transtar=== | ||
| + | *[http://www.tat-co.com/product-files/data-sheets/data-sheet-2k-epoxy-primer-sealer-6131-english-2.pdf 2K Epoxy Primer/Sealer] | ||
===Valspar=== | ===Valspar=== | ||
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