nano premaz

[morski volk]

Tole so Amerikanci napisal. men se zdi zanimivo, sploh ker mi tega še nihče ni povedal od naših majstrov. Sem pa že parkrat videl, ko je mojster kar z Hemplom za trup še po peti malo potegnu.
Anti-Fouling Paint
The type of bottom paint and how it is applied is very important.

We sometimes find that selling boat dealers have a sales person who pressures the service department to get a boat ready for delivery as soon as possible for the least amount of labor.

This can leave your vessel improperly prepared for the marine environment and can actually lead to accelerated destruction.

Most boat bottoms are painted with a copper based antifouling paint.

Copper antifouling paint should NEVER be used on an outdrive unit.

The copper in the paint will eat the aluminum drive housings and can put �fist sized� holes right through them.

Before a boat bottom is painted it should be protected with an epoxy barrier coat. The barrier coat prevents water from absorbing through the gelcoat surface. If water gets absorbed through the gelcoat surface a chemical reaction can occur called �blistering�. This blistering of the hull can ruin your boat. Make sure you ask your sales person to properly apply a good three or four coats of barrier coat before applying the bottom antifoluing paint.

The gimbal housing must have a 1� boarder around it which has NO PAINT.

This boarder is extremely important in reducing galvanic corrosion damage.

If copper type antifouling paint is permitted to come into contact with the gimbal housing a galvanic �stray currant� will be produced and damage will occur.

The drive unit must only be painted with a TBT type of antifouling paint.

TBT (Tri-butyl-tin) paint is a tin based paint that will not react with the aluminum drive housings.� Make sure you get in all the nooks and crannies of the drive and gimbal for complete protection from marine growth. A good three coats is desired. Follow exactly the application method on the can.

[admin]

Vse napisano je res, vendar pa daleč od realnost.

Kot prvo pri nas ni antifoulingov, ki bi imeli v sebi baker. To je bilo pred leti. Seveda iz kemije vemo, da sta baker in aluminij zelo "sovražni" kovini z različnimi potenciali in tako nimata kaj iskati skupaj. Sem že velikokrat videl, kako so domači mojstri alu pločevino kovičili skupaj z bakrenimi kovicami. Podobno sem že videl na bakreni pločevini "pop nete" (blok zakovice), ki so bili aluminijasti... Trajnost takega spoja si lahko predstavljate. Je pa čisto drugo CoperCoat, ki ga sedaj reklamiranjo. To pa je preparat, ki vsebuje baker in nima na nogi in v njeni okolici kaj iskati!!!

TBT, ki je omenjen v tekstu kot "pravi" za nogo, pa ne bo možno, saj je ta snov zelo strupena, tudi karcinogena in že nekaj let prepovedana. Tako je ne vsebuje več nobena barva, pred tem pa je bila res stalnica v vseh antifoulingih.

To da pa pustiš 1 colo (25mm) okrog noge, pa je napisano v vsakem priročniku od MerCruiserja in Volvo Pente. Res pa je tudi, da danes to ni več potrebno, razen če uporabljate Copercoat.

LP