Technical Resources Area
Technical Resources Area |
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GENERAL DESCRIPTION
Plascoat PPA 691 is a self-adhesive powder based on a blend of polyolefins and is supplied for the fluidised bed coating of battery boxes. It provides good resistance to acids and can be over-sprayed with epoxy paints if required.
This coating meets the hardness, electrical and chemical resistance requirements of ATEX.
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TYPICAL USES
Battery boxes
GUIDE TO TYPICAL COATING CONDITIONS
Recommended Pre-treatment: Ensure metal is clean by thorough degreasing and removal of rust and mill scale. This is usually achieved through grit-blasting.
Batch Operation: Metal pre-heat temperature: 240°C - 280°C depending on metal thickness.
Pre-heat time is usually 15-30 minutes. The battery boxes are dipped and rotated in the fluidising tank to fill and empty them in the minimum time possible. This should achieve an outside coating of 500-800 microns and an internal lining of 800 to 1200 micron.
The process temperature used should be the minimum to achieve an acceptable surface finish. Overheating may cause the coating to discolour later in storage or in service.
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 691 is supplied as a finely divided powder. Whilst there are no known health hazards associated with PPA 691, 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 certain 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 HS512, available on request. |
TYPICAL PROPERTIES OF THE POWDER
TYPICAL PROPERTIES OF THE MATERIAL
* These values may vary from colour to colour** These figures are based on test results obtained with similar materials
STORAGE
Stored in a clean, dry area at ambient temperature the material will not deteriorate. However, in the interest of good housekeeping, stocks should be rotated.
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TYPICAL PROPERTIES OF THE COATING
The following data applies to a 600 micron coating applied under standard conditions, onto 3mm thick steel. The pre-treatment consisted of degreasing and shot-blasting.
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Recommended Coating Thickness |
600 -1200 microns |
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Appearance |
Smooth, low gloss |
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Gloss |
ISO 2813 |
50 |
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Impact Strength
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Gardner (drop weight) ISO 6272 Direct 23°C |
2.5 Joules |
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Abrasion |
Taber ASTM D4060/84 H18, 500g load, 1000 cycles |
80 mg weight loss |
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Weathering
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QUV, 2000 hrs Salt spray ASTM B117 1000 hrs |
No cracking or crazing No blistering or corrosion |
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Chemical Resistance (at 23°C) |
- Dilute Acids 60°C - Dilute Alkali 60°C - Salts (except peroxides) - Solvents 23°C |
Good Fair Fair Not recommended |
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Burning characteristics:
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Safe Working Temperature |
70°C max. continuous |
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** These figures are based on test results obtained with similar materials
| 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 684 PPA 665 PPA 571 Wireguard 10 PPA 684 colour range
| 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 |
PPA691/08/03/05/WGO