At 10:58 AM 9/13/01 +0100, Dean Rayner wrote:
>Hi,
>
>Can some one clarify what Enamel is?
>and
>What Laquer is?
>
>As a UK resident I would call the origional paint technology on our cars
'Celulose' and moden paint technology 'Two Pack'. There is also the touch
up sprays which I would call 'Acrylic' (Very soft).
>
>"Celulose" Mix 50/50 with thiners and shoot with a mask.
>"Two Pack" Contains IsoCyanates (sp) and kills you!!
Dean,
I haven't seen anyone reply to your question. I'm not a chemist so
I don't really know if I can answer your question with specifics, but
I'll try.
Lacquer - an older type paint. It was thinned with lacquer thinner, and
was very fast drying. It was usually applied in several coats,
then "wet sanded". Several more coats were applied and the
"wet sanding" repeated. This would go on for many many coats.
It is said to be very brittle, but I've never really had a problem
with it.
It did have a tendency to blush - or go whitish if there was too
much moisture in the air as it dried from the outside in, which
allowed it to trap the moisture.
Enamel - A newer paint. Doesn't go on as wet - has a greater tendency to
run. So places actually use heat lamps to help speed its curing.
It has a tendency to fish eye - form small circular areas where
the paint is rejected due to oils being on the material being
painted. It also has a tendency to "orange peel". Get dimples
due to the paint curing too fast.
This paint usually only has a couple of coats applied. Then if
it is dull from overspray, or orange peeled, it can be wet sanded
with 2,000 grit paper and then buffed back out to a luster.
There is a "hardener" additive that contains IsoCyanates that
can be used with this paint.
The "Two Pack" as you call them are called "Base coat Clear coat" here.
The base coat is the color coat and is very fast drying - like lacquer.
The clear coat contains the IsoCyanates and gives the paints their depth.
This is a real laypersons explination. But I hope it helps.
John
John T. Blair WA4OHZ email: jblair@exis.net
Va. Beach, Va Phone: (757) 495-8229
48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V
75 Bricklin SV1 77 Spitfire 71 Saab Sonett III
65 Rambler Classic
Morgan: www.team.net/www/morgan
Bricklin: www.bricklin.org
/// spitfires@autox.team.net mailing list
/// or try http://www.team.net/cgi-bin/majorcool
|