Epoxy Coat BT 8468

Physical properties

Color / Glossy reddish brown , grey / Half Light

Volume solid content 80%

Flash point >25 ℃

Volatile organic components ( VOC ) approx. 194 gram / L

Density per litre 1.35 gram / centimeter ³

Construction instructions

Mixing ratio base material: curing agent = 83 ∶ 17 (weight ratio ) base material: curing agent = 75 ∶ 25 (volume ratio )

Pot life after mixing at 10 °C: 4 Hours, 23 °C: 2 Hours, 30 °C: 1 Hour

Airless spray nozzle pressure : 18-25 MPa 

Nozzle aperture : 0.41-0.58 mm 

Spraying angle : 40-80 Spend

Dilution ratio: 0-5% (volume ratio)

Brush or roller coating is only recommended for pre-coating and small area coating, but the specified dry film thickness must be achieved . Dilution ratio: 0-10%

Thinner / Cleaning Agent 603 Epoxy Thinner

It is recommended to add an appropriate amount of diluent after mixing components A and B of the paint evenly.

Avoid adding excessive amounts of thinner, which will reduce sag resistance and extend curing time.

Drying time and time between recoating (1)

(1)The data is for reference only. The actual drying time and recoating interval depend on factors such as paint dry film thickness, ventilation, humidity and previous paint.

(2)The surface must be dry and free of dirt before recoating. The adhesion of subsequent coatings will be best after the previous coating is completely cured . If the subsequent coating is a single-component paint, the longest recoating interval is recommended not to exceed 24 If the coating is exposed for a long time, the surface must be roughened before recoating to ensure adhesion between the coatings.

Surface treatment

Steel shall be treated according to SSPC-SP1 by using solvent to remove all grease from the surface; removing welding residue from the surface and grinding the weld and sharp edges by appropriate methods; and sandblasting to Sa2.5 level ( ISO 8501:1 ).

The steel surface should be painted immediately after being sandblasted to the specified requirements.

Repairing corroded parts must first be polished with power tools to St2 or better, or sandblasted to Sa2 ( ISO8501 :1 ). The surface must be dry before coating, and loose coatings, salt, grease and other contaminants must be removed.

IMO-MSC. 215(82)

Ballast water tank requirements

Steel: ISO 8501-3 P2 , all edges ground to a minimum diameter of 2 mm or chamfered. Steel and steel with non-approved shop primer: Shot blasted to Sa2.5 ( ISO 8501:1 ), surface roughness ( Rz ) 30-75 microns.

Steel coated with approved zinc silicate shop primer: welds and areas of shop primer damage and rusting should be sandblasted to Sa2.5 or power tool treated to St3 ( ISO 8501:1 ).

Construction conditions

The surface temperature of the substrate shall not be lower than 5 °C and at least 3 °C higher than the air dew point temperature, and the relative humidity shall not exceed 85% (the temperature and relative humidity shall be measured near the substrate).

The surface temperature of the substrate should not exceed 40°C . Otherwise, a suitable spraying method should be selected and appropriate diluent should be added as required to prevent dry spraying. In extreme cases, the dry film thickness of the coating can be appropriately reduced to prevent sagging.

When painting in a confined space, appropriate ventilation equipment must be provided to ensure the cure of the paint film.

After the base material and curing agent are mixed, the temperature must be higher than 15 ℃, otherwise diluent should be added to achieve the required viscosity for construction.

Recommended Package

The following are typical ballast water tank coating systems:8468 wear-resistant epoxy paint 2 × 160μm (dry film thickness )

Store

Must be stored in accordance with national regulations. The storage environment should be dry, cool, well-ventilated, avoid high temperatures and stay away from fire. The packaging container must be kept sealed. The storage validity period is at least 12 months.