l
F.8L Falco Construction Manual
D–8
Revision 4, March 1, 2002
When intermediate temperatures are used, the cure is speeded and penetration is improved.
Table 5 is given as a guide for minimum safe clamping times at various glue line (not press)
temperatures.
Table 5
Curing Period Under Heat Before Removal of Pressure
Glue Line Temperature
Pressing Time
110°F
55 minutes
120°F
40 minutes
130°F
25 minutes
140°F
18 minutes
150°F
12 minutes
160°F
9 minutes
170°F
5 minutes
180°F
3 minutes
Maturing Period.
A complete cure does not take place for about 6 days at room temperature, so
joints should not be tested for final strength or durability until after that time. Stock may
frequently be machined with safety immediately after releasing from the clamps, though it is best
to defer this for about 12 hours after removal of pressure. When intermediate temperature curing,
i.e. above 100°F, is used a complete cure is attained quickly and machining may take place
immediately after pressing.
Bonding of Other Materials
Penacolite Adhesive G-1131 will provide strong durable bonds to a large variety of material, other
than wood. The following are illustrations:
A. Resin impregnated wood, molded and laminated phenolic plastics and many other plastics
such as ureas, the cellulose plastics
(except cellulose nitrate)
, nylon, methacrylates, polyvinyl
alcohol, polyvinyl acetate and foamed polystyrene,
(not polyvinyl chlorides, Saran,
Polystyrene, polyethylene nor Teflon)
. Surfaces should be lightly sanded. If sanding is not
feasible, the surfaces should be cleaned with a solvent.
Note
When gluing together two non-porous material, both surfaces should be spread and
a ten minute open assembly should be used. In some cases it is advisable to precoat
the surfaces with a dilute solution of Penacolite Adhesive G-1131 (such as 100
parts by weight of mixed adhesive plus 15 parts denatured alcohol). This priming
coat should be allowed to thoroughly dry before spreading with the regular mix.
B. Natural Rubber, Styrene-Butadiene Rubber, Buna N, Neoprene, Thiokol and reclaimed
rubber. Best results are obtained if the surfaces are cyclized by pretreatment with
concentrated sulphuric acid prior to spreading. This treatment involves a five minute
contact of the bonding surface with the acid followed immediately by a thorough rinse
with cold water and drying. Neoprene requires a more severe cyclizing treatment with
concentrated nitric acid.
C. Porous materials such as paper, leather, textiles, or fibers, plastic foam, plaster, cement,
fiber boards such as “Masonite” or “Celotex,” asbestos or asbestos-cement boards.
Summary of Contents for F.8L Falco
Page 1: ...F 8L Falco Construction Manual...
Page 7: ...l F 8L Falco Construction Manual Revision 4 March 1 2002...
Page 21: ...l F 8L Falco Construction Manual 1 8 Revision 4 March 1 2002...
Page 29: ...l F 8L Falco Construction Manual 2 8 Revision 4 March 1 2002...
Page 43: ...l F 8L Falco Construction Manual 5 4 Revision 4 March 1 2002...
Page 65: ...l F 8L Falco Construction Manual 9 6 Revision 4 March 1 2002...
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