AIRCRAFT MAINTENANCE MANUAL
DFE-AMM-AR1
Rev. 1 – 07/24/2014
11-5
11.2.2.4.
Bonding
After total drying of basic coat we recommend to carry out total bonding of irregularities
including repairs of bonding. Recommended binders are shown in the table - Recommended
bonding agents.
After drying perform grinding with emery paper with grain size of 240 until the surface is
smooth. After grinding clean dust and wipe off with grease remover and perform repairing
paint coat by primer (1//3of coat thickness)
11.2.2.5.
Top coat
In order to reach smooth surface we recommend again carrying out the paint coat by
spraying (see paragraph 5.6.2.3).
Top coat serves especially for creating the coat resistant to weather and external effects
for aesthetic rendering of the unit. Considering the higher loading by external effects we
recommend to use top materials, exclusively two-component ones, on the acrylic-
polyurethane or polyurethane basis, always with guaranteed adhesiveness to the used base
coat (according to manufacturer). It is possible to use some of the coat systems for car
repairs. In our recommendation (see the table below) there are two types of colors: single
coat (color shade and protection in one), double coat (one-component color shade is formed
by the substrate and protection is ensured by two-component transparent top coat). By
single coat paint coat it is possible to reach the wide spectrum of colors, but it is difficult to do
metallic paint coats (we do not recommend them).
Type of
colors
Manufacturer
name
Type
Other items
Surface
weight
[g/µm/m2]
Recommended
thickness
[µm]
Drying time
(between
spray-coats
/ total) /20°C
single
coat
BASF
Glasurit R-18/
shade
(base)
acrylic-
polyurethane
BASF
Glasurit 922-18
(standard
hardener)
Glasurit
352-91
(standard
thinner)
1.0-1.6
(by shade)
20-40
15 min / 16
hrs
Double-
coat
base color coat:
BASF
Glasurit R-55/
shade
(base)
acrylic-
polyurethane
BASF
Glasurit
352-216
(thinner, long)
1.2-1.4
(by shade)
15-20
10 min / 20
min
top coat,
bright::
BASF
Glasurit
923-155
(base)
acrylic-
polyurethane
BASF
Glasurit 929-73
(standard
hardener)
Glasurit 352-91
(standard
thinner)
0.92
30-40
5 min / 5 hrs