GENERAL INFORMATION

PHYSICAL PROPERTIES

APPLICATION

Polyester (TGIC) powder coatings offer excellent application and performance characteristics. The tightly controlled particle size distribution provides extremely good first pass transfer efficiencies and edge coverage, along with the smoothest film available. Long term exterior durability, high performance mechanical properties and over-bake resistance are also common characteristics of these premium TGIC polyester coatings.

Polyester (TGIC) powders perform well over cold rolled steel, castings, hot rolled steel and aluminum substrates suitably pretreated. They are available in a wide range of colors and glosses, in both smooth and textures. The recommended dry film thickness is 2.0 ‚ 3.5 mils.
 
Typical Uses for Polyester (TGIC): Suitable applications are electronic cabinetry, office and institutional furniture, exterior applications, racking and shelving, electric and store fixtures and displays, to name a few.

Limitations of Polyesters (TGIC): Polyester (TGIC) powders are not available in gloss levels less than 25% gloss.

As always, we recommend you consult your ECL representative and perform your own physical testing to determine the suitability of a product for your requirements.

 

See health, safety and storage guide for further information.

Coating Performance of Polyester: Sample test results typical of 2 - 2.5 mils applied to 24 gauge Bonderite 1000 panels. Please refer to the specific formula data sheet for physical properties.

1.       Recommended Usage:

Metal electronic enclosures for business machines, medical or office equipment as well as OEM metal products using castings or extrusions.

2.       Applicable Substrates:

Steel and aluminum, clean and chemically pretreated.

3.       Specific Gravity (ASTM D792):

1.25 ‚ 1.85

4.       Pencil hardness:

H ‚ 4H

5.       Adhesion Test, cross hatch:

5B

6.       Taber Abrasion:

Less than 70 mg loss per 1000cycles per 1KG load with CS-17 wheel

7.       Flexibility:

1/8 inch mandrel, no cracking, no peeling

8.       Impact, direct/indirect:

160 inch pounds/160 inch pounds

13. Solvent Resistance: 50 double rubs. No effect is defined as no permanent softening of film and/or permanent change in film appearance

a) IPA - no effect

14. Humidity resistance (100%):

1000 hours exposure: no blisters, no corrosion

15. Salt Spray ASTM B117:

1000 hours exposure: no blisters, no corrosion.

Method of application:

Manual or automated corona or tribo charged electrostatic spray equipment. Use of a fluidizer is recommended. Consult with your technical representative if you have any questions regarding application equipment

Smooth Finish or Texture Coat:

The appearance is determined by formulation. However film thickness can have an effect on texture appearances. Consult your ECL representative to determine the suitability of a product for your requirements.

 

Typical Cure Cycle:

The cure range for Polyesters (TGIC) is from 20 minutes at 360ƒF to 5 minutes at 420ƒF peak metal temperature. Recommended cure schedule is 10 minutes @ 390ƒF, peak metal temp.
Faster cure formulations are available.

Above temperatures given in Fahrenheit. In the above graph, the solid area depicts the cure cycle for standard powder coatings. The shaded area shows the range available for specially formulated low-bake powders.

 Dwell temperature will depend on the oven conditions: TIME, TEMPERATURE, and MASS.