Водонепроницаемое порошковое покрытие для мебели МДФ

Composition

It is made of saturated polyester resin, curing agent, pigment, filler and additives through melting, extruding, grinding and processing.

Main features

 Extra weather resistance;

 Good leveling property and gloss; 

 Good physical and mechanical performance and resistance to chemicals and heat.

Application

It is applicable to the coating of products exposed to direct sunshine in the long term.

Product series

It can be made into a series of products with different colors and metal flashing effects according to customers’ requirements, such as aluminum powder , bronze powder, pearl powder, etc.

  Technical indexes

Residue on sieve %125μm

0 or based on negotiation

Color and appearance of paint film

The paint film should be smooth but slight orange peel is allowed and the color should meet the color difference specified.

Hardness

≥2 H

Gloss (60°)

High gloss ≥86, semi gloss 21-85, matt ≤20

Bending mm

2

Adhesive force (1×1 mm) Grade 6×6

0

Impact resistance kg.cm

≥50

Salt spray resistance 400 h

≤ Grade 1

Damp-heat resistance 500 h

≤ Grade 1

Film thickness μ

50~60

Surface preparation

The corresponding treatment method should be used based on the substrates, such as phosphating, chromizing, shot blasting or blast cleaning

1. The surface roughness should be 30 ~75 μm if reaching Grade Sa2.5 by shot blasting or blast cleaning.

2. Phosphating: degreasing- derusting- neutralizing- surface control- phosphating- passivating

Appearance of phosphating film: The phosphating film should be crystallized densely, continuously and evenly.

3. Chromizing: degreasing- rinsing- immersion cleaning- deoxidating- rinsing- chromizing

Method of Application

It is applicable to high voltage electrostatic spraying.

Spraying voltage: 50-90 kV; air pressure for spraying: 0.1-0.2 Mpa; distance between the gun and workpiece: 200-300 mm

Curing condition: 180-200℃/10-15 minutes or customized according to customers’ requirements.

Additional coating:  spraying and curing should be made after polishing the omitted part with sand paper and spraying the whole surface.