We are Agents in South Africa for RAPID COAT Powders used in the powder coating process. We can supply most colours of powder you may need in the different ranges. Below is general information on the powders but please feel free to contact us should you require any futher information.

Guideline to General Properties of Different Chemistries of Powder Coatings

Type of Powder
Curing Cycle
Surface Hardness
Flexibility
OverBake Heat
Resistance
Chemical Resistance
Weathering Resistance
Salt Spray Resistance
Epoxy
190C
5
4
2
5
2
5
Hybrid E.P.
180 C
4
5
3
3
3
4
Polyster TGIC
200 C
4
5
5
3
5
3


Faster curing powders can be offered.


Click here for our shade cards

Guidelines

EPOXY These are used where the application is indoors, away from direct sunlight and where chemical resistance is required .The coating is smooth with no orange peel. Most low gloss finishes are based on this.The curing schedule is normally 12 to15 minutes @ 190-200C metal temperature.
Click for Shade Card

HYBRID (Epoxy-Polyester) : These are general purpose coatings where a limited amount of exposure to sunlight is experienced. They have all round generally good properties. The coating has slight orange peel. Most glossy finishes are based on this.The curing schedule is normally 12 to15 minutes @ 170-180C metal temperature.
Click for Shade Card

POLYESTER Good for out door use where considerable amount of sunlight is present. They have good weathering and mechanical properties and resistance to over baking. The surface finish has higher orange peel. TGIC is used as a hardener. It is used for glossy and semi glossy finishes.

The cure schedule is normally 12 to15 minutes @ 180-190C metal temperature.

Pure Polyester TGIC Free can be offered for countries where use of TGIC is not permitted.

Good Procedures & Practices For Producing Trouble Free Coatings.

Maintain a clean & dust free atmosphere and work area. Ensure that the gun and booth are clean before commencing work.

Inspect work area, eliminate possibilities of accumulated dirt on roofing structures and other equipment from blowing or falling on work place.

Do not mix powders from two different suppliers / manufacturers.

Careful attention should be given to having clean, dry, oil free compressed air supply, at the recommended pressure.Periodically drain off water from the compressor tank and flush the airline dry.

Clean sieved reclaimed powder should be mixed in small proportionate quantities, as the work progresses, and not allowed to accumulate and collect the dirt and moisture.

Always store powder in a closed sealed container and in a cool and dry place. The powder should not be left in the equipment for long periods when not being used.

Good earthing of job and equipment are very essential.

Check that the pre-treatment chemicals are in good condition and of the correct strength. Remove the sludge accumulated at the bottom of the tanks.

Give due  attention to surface pre-treatment of piece. Ensure that the job is duly cleaned of surface contaminants, blow holes and cavities are filled and finished, de-greased, de-rusted, passivated, phosphated / chromated and duly passivated and dried. Particularly in the case of castings greater care is required for cleaning out the blow holes/ porous surfaces. After pre-treatment ensure that dirt and dust does not settle on the job, and it is coated and cured at the earliest.

Metallic powders should be used with the charging voltage set to minimum.


Caution & Notices

The coated articles on this card are representative only and may vary slightly in actual gloss, color, and texture. We do not accept any responsibility for variation.

We encourage you to test the product in order to determine suitability for your specific needs. Since the conditions of product application are beyond our control, no warranty is expressed.

In practice, discrepancies may be experienced duo to coating thickness, different substrates, application equipment and curing conditions.

To maintain appearance of metallic finishes, a clear top coat is recommended.

Rapid endeavors to stock all products shown. However, we may add or delete products form our inventory/product range as market conditions demand.

Additional Chemistries Available :

Anti-grass powders, Heat resistant powders upto 600oC, Wet look powders with high distinction of image.

Also Available :

RAL-shades as per RAL 840-HR & RAL 841 GL and as per INDIAN STANDARD IS 5:1994

  Metal finishing chemicals and products for the full spectrum of surface finishing.

Click here for more

  A range of products used in the anodising of aluminium. Spray and dip applications, zinc and iron phosphates.

Click here for more


We stock a range of anodes and oxides.

Click here for more

  We supply a full range of powders used in the powder coating process.

click here for more
  We are agents for the Swift range of cartridge heaters and accessories in the Western Cape.

Click here for more

  A full range of polishes and compounds.

Click here for more

 

home | about us | products | laboratory | contact us | site map

©2008 St Kilda Chemicals | All rights reserved | site design: www.justdesigns.co.za