Technical Resources Area
Technical Resources Area |
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GENERAL DESCRIPTION
Plascoat PPA 661 is a superior high performance coating powder based on an alloy of thermoplastics. It has been specifically designed to be applied by a variety of coating techniques including fluidised bed dipping to give a protective coating with excellent resistance to aqueous environments. Plascoat PPA 661 is resistant to stress cracking, salt, airborne pollutants and to dilute acids and alkalis whilst maintaining excellent adhesion to the metal substrate without the need for a separate primer. Phosphating is recommended for long life in more aggressive environments. Plascoat PPA 661 provides excellent electrical insulation and can withstand steady or cycling temperatures between -40°C and +65°C. The WRC has approved selected Plascoat PPA 661 colours for use with potable water. Tests conducted by the Danish Institute of Corrosion have shown that Plascoat PPA 661 is very suitable for coating reinforcement mesh and cages.
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TYPICAL USES
Reinforcement cages, tank lining Reinforcement mesh, battery boxes Coating of pipes/fittings, wirework
GUIDE TO TYPICAL COATING CONDITIONS
Recommended Pretreatment: Ensure metal is clean by thorough degreasing and removal of mill scale. To get the full benefits of the material, the metal should be shot blasted to Swedish standard SA 2½-3. Phosphating will assist the long term corrosion resistance in aggressive environments.
Batch Operation: Metal preheat temperature 280°C-340°C. A cure cycle at 170°C may be required on light items. Dipping time 5-20 seconds. Air cool or water quench.
Thicknesses outside the recommended range may be detrimental to the properties of the coating.
For typical properties of the coating see below.
HEALTH AND SAFETY
Plascoat PPA 661 is supplied as a finely divided powder. Whilst there are no known health hazards associated with Plascoat PPA 661, normal handling precautions for dealing with fine organic powders should be taken - i.e. excessive dust generation and inhaling of the powder should be avoided. Facilities may be required for removing excess dust from the working area during the coating of more difficult items.
As with all polymeric powders, the material can ignite if brought into contact with a high temperature source or ignition - particularly in the fluidised condition.
Reference should be made to Plascoat Health and Safety Data Sheet HS501, available on request.
Should the coating be required for contact with food or potable water, further details should be obtained from Plascoat. |
TYPICAL PROPERTIES OF THE POWDER
*These values may vary from colour to colour
TYPICAL PROPERTIES OF THE MATERIAL
STORAGE
Stored in a clean dry area at ambient temperature and out of sunlight the material should not deteriorate. However, in the interest of good housekeeping, stocks should be rotated. |
TYPICAL PROPERTIES OF THE COATING
The following data applies to a 300 micron Plascoat PPA 661 coating applied under standard conditions onto 3mm thick steel plate, and followed by water quenching. All tests are at 23°C unless otherwise stated.
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Recommended Coating Thickness |
300-1000 microns |
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Appearance |
Low gloss |
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Impact Strength
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Gardner (drop weight) ISO 6272 Direct 23°C |
1.6 Joules |
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Abrasion |
Taber ASTM D4060/84 H18, 500g load, 1000 cycles |
400mg weight loss |
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Salt Spray
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ISO 7253 Steel - unphosphated
- phosphated
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10mm loss of aldhesion - no underfilm corrosion. 3mm loss of adhesion - no underfilm corrosion. |
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Chemical Resistance*
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- Dilute Acids 60°C - Dilute Alkali 60°C - Salts (except peroxides) 60°C - Solvents 23°C |
Very good Very good Very good Poor |
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Adhesion |
PSL, TM 19 |
A-1 |
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Weathering
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Colours other than black are not suitable for long term exposure to UV light. |
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Safe Working Temperature |
Continuous in Air |
+65°C max |
*Further technical advice may be obtained from Plascoat concerning the effects of particular chemicals or mixtures.
| QUALITY
Plascoat is committed to the manufacture and supply of a wide range of thermoplastic coating powders. This service is backed by the unrivalled experience of over 50 years of powder coating application.
With a policy of continuous improvement to its range of products, Plascoat reserves the right to alter or amend any item. Stringent quality control procedures are carried out at every relevant stage of manufacture and Plascoat operates a quality management system approved by BSI in accordance with ISO 9001:2000. |
Plascoat
can also offer, through its factories in Europe, specialist
plastic coating equipment, an extensive
custom coating service
and a size reduction service for plastics and other materials.
Plascoat is a subsidiary member of the IPT Group of companies.
Plascoat is a UK registered trade name.
It should be appreciated that the information given here is, to the best of our knowledge, true and accurate. However, since conditions under which our materials and equipment may be used are beyond our control, recommendations are made without warranty or guarantee. |
See also PPA 662 PPA 665 PPA 571
| Plascoat Systems Limited Trading Estate, Farnham, Surrey, GU9 9NY United Kingdom Tel: +44 (0) 1252 733777 Fax: +44 (0) 1252 721250 email: sales@plascoat.com |
Plascoat Europe BV Kerkweg 11, Postbus 9 3214ZG Zuidland The Netherlands Tel:+31 (0) 181 458 888 Fax:+31 (0) 181 458 877 salespce@plascoat.nl |
Plascoat Corp Crown Centre Suite 600 5005 Rockside Rd Cleveland OH44131 U.S.A. Tel: 800 489 7236 Fax:+1 216 520 1273 plascoat@nls.net |
Plascoat Corp (Sales & Dist) Punda Mercantile Inc 4115 Sherbrooke Str West, Suite 610, Montreal, Quebec H3Z 1K9 Call: 800 489 7236 Tel: +1 514 931 7278 Fax: +1 514 931 7200 sales@punda.com |
PPA661/19/04/06 /Web