Composition of the epoxy resin, polyamide curing agent, antirust paint, additives and solvent composition of the two-component thick epoxy epoxy anode shield coating.

Key Features

              * Has a good anode shielding

              · Good adhesion and mechanical strength

              · Excellent seawater resistance and durability

              · Good insulation performance

              * Construction of good performance, scratch a dry film thickness of up to 1000μm

Uses

It can be used as anodic shield coating around the anode of ship's bottom, offshore engineering, offshore platform, harbor facilities, circulating water equipment of power plant and so on, which adopts external current cathodic protection system.

Appearance iron red

Construction parameters

              Volume solids 75 ± 3% (measured in accordance with ISO 3233: 1998, GB / T 9272 eqv) (after mixing)

              Component A: Component B = 10: 13 (weight ratio)

              The dry film thickness was 250 μm

              Wet film thickness 333μm

              The theoretical amount of 536g / m2

              Flash point 

                           A component (base material) 27 ℃

                           Component B (cured product) 27 ° C

              Drying time (25 ℃)

                           Table dry ≤ 4h

                           Hard work ≤ 24h

                           Fully cured 7d

Curing time (after mixing) (20 ° C) 30 min

Pot life (after mixing) (20 ℃) 8h

Overcoating interval time

It is recommended to coat the number of scraper coating 3-4 Road, dry film thickness ≥ 1000μm.

702 epoxy zinc-rich shop primer, 703 epoxy iron red shop primer, 704 inorganic zinc silicate shop primer, or directly coated on the surface to meet the requirements of the steel surface.

Surface treatment

              * There are oxide steel: sandblasting to Sa2.5 level.

              * No oxide steel: pneumatic or electric tools polished to St3 level.

              · Coated with workshop primer steel: paint damage and corrosion at the Department of the second derusting, derusting quality to St3 level.

Construction conditions

              • Substrate temperature should be above 3 ℃ above dew point

              · When the temperature is lower than 5 ℃, curing reaction of epoxy and curing agent is stopped, so it is not suitable for outdoor construction

             · Relative humidity not more than 85%

Determination of the Shape and Size of the Anode Shield

The shape of the anode shielding layer depends on the shape of the auxiliary anode, the current auxiliary anode cathodic protection current shape is mostly long strip or disc shape, so the anode shielding layer should also be painted into a strip

Shaped or disk-shaped

The principle of the anode shield design is to ensure that the bottom of the anode shielding layer at the edge of the ship from damage.

The size of the anode shielding layer, mainly depends on the auxiliary anode rated output current, and the performance of the ship primer and sea water resistivity.

              (1) the design of the disk-shaped anode shield layer size can be calculated according to the following formula

                      E = E0- (I0 * r) / 2pr

                In the formula:

                      E - is the potential at the center of the auxiliary anode r, V;

                      E0 - steel structure in the lowest degree of protection potential in seawater: V;

                      I0 - the rated output current of the auxiliary anode, A;

                      R - seawater resistivity, Wm;

                      R - the radius of the disk-shaped anode shield, m;

              (2) the length of the design of the anode anode shielding layer size can be calculated according to the following formula

                      E = E0- (I0 * r) / pL (Ln (2L / d) -L)

                In the formula:

                      E - the potential from the auxiliary anode d, V;

                      E0 I0 and r have the same meanings as in (1)

                      L - the length of the strip-shaped auxiliary anode, m;

                      D - the distance from the edge of the strip anode shield to the auxiliary anode, m;

Ln - the natural logarithm

Anodic shield coating coating shape and size diagram

Coating method

Scratch thinner 103 thinner

           Dilution 0-3% (by weight of paint)

If you need to add thinner, must be mixed in the two groups before adding

Cleaning agent 103 Thinner

Safety precautions Refer to the MSDS.

Packing group A (base material) 10L barrel 10kg

                 B component (curing agent) 20L barrels 13kg

Shelf life of 12 months

Remark For the correct use of our products, please carefully read the "User's Guide" in this manual.

Statement The above data and data are based on our test and practical experience in the use of accumulated and can be used as construction guide. We do not understand the situation in the construction, we only guarantee the quality of the paint itself, other issues will not be responsible. For this manual, we will be based on the continuous improvement of products have the right to modify.