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PLASCOAT PPA 665

Performance Polymer Alloy Coating

 

GENERAL DESCRIPTION

 

Plascoat PPA 665 is a polyolefin based polymer alloy, developed for application onto metal cylinders by rotational lining to give a protective coating with excellent resistance to aqueous environments, including the foaming agent A.F.F.F. and is also resistant to up to 30% Antifreeze (ethylene glycol). When correctly applied, the coating gives excellent adhesion without the need for a separate adhesive priming coat and can withstand steady or cycling temperatures between -40°C and +65°C. Plascoat PPA 665 coated cylinders meet requirements of EN3. PPA 665 is available in grey and black.

 

For spray lining see also PPA 665XL

 

For rotational and spray-lining equipment suppliers - click here.

 

 

TYPICAL USES

 

The internal lining of portable fire extinguishers.

 

GUIDE TO TYPICAL COATING CONDITIONS

 

Recommended Pre-treatment:

Degrease - alkaline/solvent degrease

Shot-blast to Swedish standard SA 2½ to 3 or iron phosphate.

 

Typical application using Plascoat DHSC lining machine on 3mm steel cylinder:

Preheat: 1.5-1.75 minutes in horizontal position

(Metal Temperature between 260°C and 300°C)

Dwell: 30 seconds - nodding in 8 sec cycle

Post-heat: 30 seconds

Cooling

Overall cycle: 4 to 5 min

 

The typical shot weight for a 9 Litre cylinder is 430g. This produces a coating of thickness of around 1mm.

These values are only intended as a guide and will vary according to metal thickness and type.

 

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 665 is supplied as a finely divided powder. Whilst there are no known health hazards associated with PPA 665, 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

 

Coverage (100% efficiency)

1.6m2/Kg at 600 µ

Particle Size

< 355µ 

Bulk Density (at rest)*

0.35 g/cm3

Packaging

20 kg paper sacks

 

TYPICAL PROPERTIES OF THE MATERIAL

 

Specific Gravity*   1.03 g/cm3
Tensile Strength ISO 527 11 MPa
Elongation at Break ISO 527 40%
Hardness Shore A 95
  Shore D 66
Vicat Softening Point ISO 306  80°C
Water Absorption 48 hrs at 50°C less than 0.01%

Environmental

Stress Cracking

ASTM D1693 Greater than 2000 hrs

*These values may vary from colour to colour

 

STORAGE

 

Stored in a clean, dry area at 10-30°C and out of sunlight, the material should not deteriorate.

 

However, in the interest of good housekeeping, old stocks should be used first. 

 

TYPICAL PROPERTIES OF THE COATING

 

The following data applies to a 400 micron coating applied under standard conditions onto 3mm thick steel plate. All the tests are performed at 23°C unless otherwise specified.

 

Recommended Coating Thickness

500-1200 microns

Appearance

Smooth, semi-matt

Impact Strength

Gardner (drop weight) ISO 6272

Direct 23°C

 

1.32 Joules

Abrasion

Taber ASTM D4060/84

H18, 500g load, 1000 cycles

 

210mg weight loss

Salt Spray

 

 

 

ISO 7253

Results after 1000 hours:

Adhesion lost up to 10mm from scribe mark.

Less than 0.5mm under film corrosion. (A phosphated substrate will improve corrosion resistance).

Chemical Resistance*

 

 

- Dilute Acids

- Dilute Alkali

- Salts

- Solvents

Good

Good

Good (except peroxides)

Poor

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 9001:2008.

 

Suitability for application and performance of finished goods coated with Plascoat is the sole responsibility of the customer and end user.
Product and item design, pre-treatment, coating conditions, quality assurance and conditions of product end use are among the factors that affect performance of the coated products and are outside Plascoat’s control.

Plascoat expressly denies specific or implied warrantees including warrantees for fitness for a particular use or purpose.
 

 

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 571    PPA 665XL

 

Plascoat PPAs for fire extinguisher lining

Resistance of PPA 665 to AFFF

Lining of fire extinguishers on a Falcon 24

Lining equipment suppliers

 

 


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
Meeuwenoordlaan 19,
Postbus 9
3214VT 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

PPA665/25/04/01/CB