"antifouling" maison ou tout pret???

Après voir lu les échanges sur les fils concernant l’antifouling (j’ai déjà le rouleau à la main), je reste perplexe sur l’approche de certains. J’ai demandé à un ami chimiste, pour espérer finir ma journée moins bête que ce matin, de me faire une recherche sur la composition des antifoulings disponibles sur le marché. Il m’a fait parvenir l’extrait d’une notice sur un érodable:

“In the present context, the term "erodible" is intended to mean that the coating in question and under the test
condi¬ tions described is subject to a reduction of the thickness of the coating of at least l μm per 10,000 nautical
miles of relative movement between the coated surface and the surrounding aqueous medium due to removal of coating
material from the surface of the coating.

In the present context the term "erodibility-conferring polymer" is intended to mean a polymer of formula I or of formula
II that, when incorporated in the binder system of a coating composition S of the following composition, stated as
solids volume parts:

30 parts of the polymer of formula I or II, 30 parts of gum rosin,

10 parts by volume of cuprous oxide with an average particle size of 2-4 μxa,

26 parts by volume of zinc oxide with an average particle size of approximately 0.2 μm
4 parts by volume of thixotropic bentonite,

results in an erosion rate of the coating in sea water with a salinity in the range of 37-38 parts per thousand of
at least 1 μm per 10,000 nautical miles when the coating composition has been applied on and has been allowed to form
a continuous film on the convex surface of a cylinder of diameter 1 meter and the coated cylinder is rotated with a
peripheral speed of 15 knots in sea water of a temperature between 10 and 30°C.

In the present context the term "marine" relates to any kind of aqueous environment such as salt, brackish or fresh water.

In the present context the term "marine surface" is intended to mean any surface or object exposed to a marine environment, e.g. the surface of vessels
(including boats, yachts, motorboats, motor launches, ocean liners, tugboats, tankers, container ships and other cargo
ships, submarines (both nuclear and conventional) , and naval vessels of all types) , pipes, shore and off-shore
machinery, constructions and objects of all types such as piers, pilings, floatation devices, bridge substructures,
underwater oil well structures, nets and other aquatic culture installations, and buoys etc.”

Suite à quoi, je lui ai demandé de me dire, pour un nul en chimie, à quoi cela correspondait :
Réponse : de la peinture à base de polyéthylène et de gomme naturelle pour accrochage (genre résine d’essence de térébenthine) avec composant favorisant le lissage. + de l’oxyde de cuivre + oxyde de zinc
Ces 3 composants sont accessibles dans le commerce. Alors, faire des économies en faisant « son » badigeon ? Ou utiliser les services de ceux qui bien sur n’attachant pas leur chien avec des saucisses nous le vendent (très ?)bon prix ? Tout est toujours possible, sans mettre dans la composition d’un antifouling »perso » des saloperies comme de l’insecticide par exemple. Pour l’instant, je vais donc commander sur le net en GB (-30%), par rapport au schip local.
;-)