Document: SLSA-MIP-5-4-0-US
Date of Issue: 05/2016
Revision: -
15-13
15.6
Paint repairs
15.6.1
Safety rules
When working with paints, thinners and solvents follow the following safety rules:
it is necessary to follow safety rules for working with flammable and volatile substances
working area must be properly aerated
it is prohibited to smoke and anyway handle with free fire in a working area
use protective working means such as goggles, gloves, respirator, etc.
15.6.2
Recommendation for additional surface treatment of airplane surface
CAUTION
By applying permanent protective coats weight of airplane is increased and gravity center
position is changed. Increase in weight depends on type of coat and its thickness.
15.6.2.1
Washing and degreasing
It is possible to use both organic solvents and solvents based on water.
Organic solvents
- acetone, metyetylketone (MEK), benzine, toluene, BASF Glasurit
360-4
Applied by spraying on washed surfaces (e.g. mechanical sprayer, jet ejector) or by
wiping with wet (by pouring, not by dipping because it would contaminate the whole
volume of solvent) textile wad. After applying it, the agent is wiped off by clean absorbing
material before solvent evaporation.
Advantages
: fast and reliable evaporation even from the corners and borders without
additional warming
Disadvantages
: it must be used without other dilution (expensive); not ecological
(danger of water contamination); detrimental to health (must be carried out in an aerated
area with personal protective means); waste (including dripping from the area) must be
eliminated in the incinerating plants.
Use
: for Al-alloys surfaces, epoxy fiberglass
CAUTION
These agents must not be used for degreasing parts from plastics (PC -Lexan, PMMA
Plexiglas)
Water-based agents
- emulgation substances, wetting agents
Applied also by spraying onto washed surfaces or by wiping with wet (by pouring and
dipping) textile wad. After applying it, let it act for some time (see manufacturers
recommendation) and then it is rinsed with clear water (by means of sponge dipped in
ample amount of water or water jet).
Advantages
: (different according to the type of product: it is possible to highly dilute
with water (cheap); ecological - waste (including dripping from the surface due to ample
amount of water it is necessary to contain it) can be generally eliminated after its
additional dilution with water in public sewerage; the least detrimental to health.
Disadvantages
: slow and unreliable evaporating from corners and borders, additional
warming (drying) mostly required imperfect elimination of water results in wrong
adhesion of paint coats; imperfect degreasing of fiberglass parts (not possible to use)
Use
: for Al-alloys surfaces and plastics
Summary of Contents for S-LSA
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