Polyester resins are hygroscopic (they draw moisture
from the air). There are two types of resin, and one or both types may
be required, depending on the application. Type "A" resin has
a small amount of wax in it, which comes to the surface and forms a barrier
against the moisture. This permits the resin to cure completely and the
surface is hard and easily sanded. Bond Coat "B" resin does
not have any wax content.
As a result the surface stays a little tacky,
as the surface cure is being inhibited by moisture. This tacky surface
provides excellent adhesion between coats. Bond Coat resin is therefore
recommended for the first coat of resin to fill the weave of the glass
cloth, for bonding fiberglass cloth to plywood or other surfaces and for
multi-layers of glass cloth.
TYPE "A" RESIN
#1520-5 is a general purpose ortho surfacing resin intended for
the finishing coat applied over the Bond Coat #1063-5, or for
single coat application. A second coat may be applied after full
cure and thorough sanding but is not recommended.
Description
Part
No.
Price
Buy
Polyester Resin #692 Quart
01-00346
$38.25
1 Gal. #1520-5 with 1 Oz. Catalyst
01-00347
$83.95
5 Gal. #1520-5 with 4 Oz. Catalyst
01-00348
$318.95
Additional Catalyst may be required. 1 Oz.
01-06900
$4.20
Additional Catalyst may be required. 4
Oz.
01-07325
$4.40
TYPE "B" RESIN
#L253T-20 is a general purpose bond coat ortho resin for use
in making multi laminates. It will not cure to a high gloss finish.
Use 1520-5 for finish coat to obtain smooth, hard gloss finish.
Replaces #1063-5.
Description
Part
No.
Price
Buy
1 Gal. #L253T-20 with 1 Oz. Catalyst
01-00349
$48.75
5 Gal. #L253T-20 with 4 Oz. Catalyst
01-00350
$231.95
Above resins are not for use in making
fuel tanks. For fuel tanks (except those for gasohol) use #6060-5
Isophthalic Resin.*
1 Gal. #6060-5 with 1 Oz. Catalyst
01-00351
$53.60
5 Gal. #6060-5 with 4 Oz. Catalyst
01-00352
$232.95
* Iso Resin is highly flexible.
Has excellent adhesion to metal, wood, concrete, fiberglass and
other "hard-to-adhere" surfaces. Compatible with most
fuels. Iso is a wax-free resin and must be over-coated with Type
"A" Surfacing Resin to obtain a surface cure.
SURFACE CURING AGENT is used in polyester resin to improve
sanding properties. Added to #1063-5 Bond Coat or #6060-5 Isophthalic,
it will provide same sanding properties as in Type "A" Surfacing Resin.
Use in Proportions of 2 oz. per gallon of resin. Surface Curing Agent is
used in addition to catalyst.
Composites - Resin
