Comparison
Kynar Liquid PVDF Vs. Spraylat NEWLAR™ Powder PVDF
THE MAIN NOTES ARE:
1) THICKNESS LIQUID 1.2 MILS -
POWDER 1.5 TO 2.5 MILS
2) PENCIL HARDNESS
3 ) KYNAR 70% (PVDF) VS NEWLAR 100% (PVDF
Physical
Testing
|
Thermoplastic
|
NEWLAR™
|
Pencil
Hardness
|
HB
|
4 H
|
Boiling
Water Immersion 20’
And Cross
Hatch after 5’
|
4B (Slight
Adhesion loss)
|
5B (100%)
|
Dry
Adhesion
|
5B
|
5B
|
Nitric
Acid Vapors
|
Pass
|
Pass
|
Continuing
Exposure (up to 72 hrs.)
|
Fail
|
Pass
|
Impact-cracks
no loss of adhesion
|
Pass at 20
in/lbs.
|
Pass @ 40
in/lbs.
|
Falling Sand
Abrasion AAMA 40 liters/mil
|
36.56 Fail
|
45.4
|
Detergent
|
Pass
No-blisters
|
Pass
No-blisters
|
Hydrochloric
Acid (HCl) 37%
|
Pass 168
Hrs.
|
Pass 168
Hrs.
|
QUV –
Accelerated Weathering: Color
Change
|
∆ E
< 1.0
|
∆ E
< 0.6
|
UVB 313 Bulb
for 3000 hours Gloss
Retention
|
77%
|
100%
|
Salt
Spray-B1000 (1000 hours)
|
Failed
(3N8)
|
Pass (8N8)
|
Salt
Spray-Alodine (chromated aluminum)
|
Failed at
900 Hrs.
|
Pass at
4000 hrs.
|
It is a resin used
in architectural coatings that has exceptional weathering
characteristics. PVDF stands for polyvinylidene fluoride. It is also
known as "Kynar", or more properly, ®Kynar 500. ®Kynar
500 is a registered trade mark of Arkema Inc. North America, Inc. To quote
Arkema: "Kynar® polyvinylidene fluoride (PVDF) resin is one of the
most stable and pure of all commercial resins. It resists strong acids,
solvents, and reducing agents and is used in several industries, including
electrical and electronic manufacturing, chemical processing, pulp and
paper, and transportation." The word Kynar is being used in everyday
conversation the way the trade name "Kleenex" is used with
tissues. However, as long as Arkema continues to protect its right to the
trade name "Kynar 500," the generic way to describe it is
"polyvinylidene fluoride" or "PVDF." This is not
exactly the same thing as "Fluorocarbon resin." PVDF is one of
several Fluorocarbon resins. Another trade name used for PVDF is ®Hylar
5000. Hylar 5000 is a registered trade mark of Solvay Solexis. Newlar by Spraylac also has 100% PVDF
compared to 70% by others
|