POLYGLASS
Polyglass VEFT
Product reference: 2/34
Product title: Polyglass VEFT
Valid from: 28th April 1998
Last reviewed: May 2019
Type: A 2-pack cold cured vinyl ester/acrylic co-polymer enhanced with flaked glass. This product has excellent chemical and moderate erosion/abrasion resistance. A unique property is its extremely high resistance to undercutting/ delamination from damaged edges in service.
Suggested use
Immersion; such as marine, hydrocarbon, aqueous and corrosive chemical environments. Also applicable where aggressive atmospheric conditions appertain. Strip coating for spray grades of Polyglass. This product may be hand or spray applied. Single coat spray applications may be built to thicknesses in excess of 1.5mm.
Limitations
Not suitable for protection against polar solvents and where pH conditions are below 1 or above 12.
Health & safety
Before handling or using this product, the material safetydata sheet should be read, and all precautions observed.
Surface preparation
For optimum performance of product under immersed conditions, grit blast steel to SSPC-SP10 (ISO 8501-1 Sa2½ near 3) or equivalent prior to application. For full details refer to Corrocoat Surface Preparation SP1.
Recommended DFT
1.0 to 3.0mm in multiple coats. 20 mils (500 microns) when applied under or over other Corrocoat products.
Pot life
60 Minutes at 68°F (20°C). Pot life will reduce substantially with increase in temperature and extend with decrease in temperature. Inhibitor is available to extend this time for hot climates.
Practical spreading rate
42 sf per gal at 30 mils (1.05m2
/litre at 750 microns).
NOTE: This information is given in good faith, but rate
may vary significantly dependent upon environmental
conditions, the geometry and nature of work undertaken
and the skill and care of application. Corrocoat accepts
no responsibility for any deviation from these values
Specific gravity
0.04lbs/cubic inch (1.24 gms/cc).
Pot life
Approximately 1 hour 10 minutes at 68°F (20°C). Pot life will decrease at higher temperatures and increase at lower temperatures. Seek the advice of Corrocoat USA for availability of inhibitor.
Elongation at break
Atmospheric conditions 1.3%.
Tensile strength
3900psi (274 kg/cm²) dependent upon cure state.
Temperature limits
230°F (110°C) immersed. 346°F (175°C) non-immersed. No lower limit.
Abrasion resistance
255mg. Loss 1000 cycles/1000 gm load H18 wheel.
Mixing ratio
98:2 base to catalyst.
Hardness
32 Barcol (approximate)
Thermal conductivity
3.98 W/m°K
Cleaning fluid
Acetone or Methyl Ethyl Ketone before gel.
Practical spreading rate
42 sf per gal at 20 mils (1.06m²/litre at 500 microns). (Practical coverage values will vary dependent upon application conditions and procedures.)
Mixing ratio
Polyglass VEFT can be catalysed by a 2% weight addition of Corrocoat catalyst type P2-45.
Mixing procedure
The material has been supplied in kits, each consisting ofthe base component (large tin) together with the appropriate amount of catalyst. Add approximately one half of 1 bottle of catalyst to a tin of the base material and agitate witha mechanical stirrer for about 2 minutes. Then add the remainder of the catalyst, mixing thoroughly.
Application equipment
Brush or short haired roller.
Application
Two or more coats of Polyglass VEFT should be applied until a minimum DFT of 30 mils (750 microns) or greater has been achieved, over thickness is not detrimental. (See below forovercoating intervals.) Polyglass VEFT is also used for stripe coating Polyglass VEF work.
Thinners
THIS PRODUCT SHOULD NOT BE THINNED. The use ofsolvent thinners will adversely affect performance and under no circumstances must they be used.
Packaging
1 Gallon and 5 Gallon Kits.
Storage life
6 months stored at temperatures below 68°F (20°C) and away from heat sources and direct sunlight. Frequenttemperature cycling will shorten storage life. See other information for extension of shelf life.
Color availability
Black only.
Theoretical spreading rate
82 sf per gal at 20 mils (2.0m²/litre at 500 microns).
Volume solids
This material contains volatile liquid convertible to solids. Volume solids obtained will vary dependent upon polymerization conditions. Nominally greater than 99% of the contents are convertible to solid.
Flash point
82°F (28°C).
Catalyst type
Methyl Ethyl Ketone Peroxide Corrocoat Type P2.
Overcoating
May take place as soon as the previous coat has gelled sufficiently to bear the weight of the next coat and while still tacky. Minimum overcoating interval 3 hours under well ventilated conditions at 68°F (20°C). Longer periods pertain to cooler conditions. Maximum overcoating interval 48 hours at 68°F (20°C). For longer intervals than this refer to Corrocoat for technical advice.Superior inter-coat adhesion characteristics are favored by short overcoating intervals.
Curing time
Tack free: approximately 4 hours at 68°F (20°C) Full cure: 3-4 days at 68°F (20°C) Minimum cure before immersion: 24 hours at 68°F (20°C)
Cleaning solvent
Use Methyl Ethyl Ketone or Methyl Isobutyl Ketone before gelation occursReviewed: 07/2011Reviewed 02/24 (No changes)Reviewed 10/2017 (No changes)Reviewed 05/2019 All values are approximate. Physical data is based on the product being in good condition before polymerization, correctly catalyzed and full cure being attained. Unless otherwise stated, physical data is based on a test temperature of 68°F (20°C), test results may vary with temperature. Information regarding application of the product is available in the Corrocoat manual. Should further information be required, please consult Corrocoat Technical Services.
Elongation
0.9%.