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pete-stevers |
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saved from fire! ![]() ![]() ![]() ![]() Group: Members Posts: 2,643 Joined: 10-October 04 From: Abbotsford,BC, Canada Member No.: 2,914 Region Association: Pacific Northwest ![]() ![]() |
I have been informed by my lordco paint rep that at the end of the year, we will no longer be able to buy solvent based auto paint, and we will be forced to switch to waterborn paints which require a ubber spensive cross draft booths, not to mention all the solvent paint guns will be obsolete....
basicaly killing any hobbiest paint operations...like me any thoughts or ideas??? it is to implemented here in Can and Cal. |
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rick 918-S |
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Hey nice rack! -Celette ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 20,512 Joined: 30-December 02 From: Now in Superior WI Member No.: 43 Region Association: Northstar Region ![]() ![]() ![]() |
As with anything there is a learning curve. It is interesting about waterborne primer causing possible flash rust. I wouldn't worry about that too much. Were not going to be required to use that just yet. I think by the time were subjected to that they will come up with a primer that contains acid as a coalesing solvent.
I snatched the following from an government web site. "Waterborne (or latex) paints are composed of synthetic resins and pigments that are kept dispersed in water by surfactants. They also contain small amounts of coalescing solvents. Waterborne paints dry by evaporation of the water. The coalescing solvents allow the resin particles to fuse together (coalesce) as the water evaporates to form a continuous coating." I think a bigger problem with waterborne primer would be adhesion. Because of the alloy steel in new car sheetmetal there needs to be a 36 grit grinder mark in the panel for even sovent based primer to bond. That's why we were introduced to acid based primers. This promoted a chemical bond inplace of the mechanical bond of solvent based primers to old mild steel body panels of the early iron. Now, waterborne paints are not mixed with tap water. You purchase a solvent type water. You mix the base coat with a water that contains coalesing solvents. So, the solvents hold the base coat in suspension and allow the water to evaporate. Not enough air moving and the works could skin over trapping water in the base coat. So I would think the coalessing solvent is very slow to coales or flash allowing the water to excape. Oh, and I saw an episode of trucks or something where they used waterborne paint of one of their projects. I think they were using a figgin heat gun to aid in air movement and evaporation. |
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