● Polyvinylidene Fluoride (PVDF) - A High-Purity, Strong and Resistant Thermoplastic Fluoropolymer
Polyvinylidene fluoride, or polyvinylidene fluoride (PVDF) is a highly non-reactive and pure thermoplastic fluoropolymer produced by the polymerization of vinylidene fluoride.
PVDF is a specialty plastic material in the fluoropolymer family; it is used generally in applications requiring the highest purity, strength, and resistance to solvents, acids, bases and heat and low smoke generation during a fire event. Compared to other fluoropolymers, it has an easier melt process because of its relatively low melting point of around 177 °C.
● Chemical and physical properties
It has a low density (1.78 g/cm3) compared to the other fluoropolymers. It is available as piping products, sheet, tubing, films, plate and an insulator for premium wire. It can be injected, molded or welded and is commonly used in the chemical, semiconductor, medical and defense industries, as well as in lithium ion batteries. It is also available as a crosslinked closed cell foam, used increasingly in aviation and aerospace applications.
A fine powder grade, KYNAR 500 PVDF or HYLAR 5000 PVDF, is also used as the principal ingredient of high-end paints for metals. These PVDF paints have extremely good gloss and color retention, and they are in use on many prominent buildings around the world, e.g. the Petronas Towers in Malaysia and Taipei 101 in Taiwan, as well as on commercial and residential metal roofing.
PVDF membranes are used for western blots for immobilization of proteins, due to its non-specific affinity for amino acids.
* Citing source: Wikipedia
● Chemical resistance chart
How to use this chart
» Meaning of symbol:
OK: Recommended.
△: Must confirm if usable by testing in advanced.
X: Not recommended.
» This chart only provides the result of a single chemical to material, if a client uses more than one kind of chemical at the same time, please choose material by experience.
» This chart is for reference only which is not applicable to all working environments. Please refer to design equipment according to practical experience.
|
Category
|
Chemical
|
PVDF
|
|
Organic acids
|
Acetic acid
|
OK (80% @ 80˚C)
△ (80% @ 100˚C)
X (80% @ 120˚C)
|
|
Acetic acid, glacial
|
OK (80˚C)
△ (100˚C)
X (120˚C)
|
|
Acetic anhydride
|
△ (25˚C)
X (50˚C)
|
|
Citric acid
|
OK
|
|
Organic compound
|
Acetaldehyde
|
N/A
|
|
Acetone
|
OK (50% @ 25˚C)
△ (100% @ 25˚C)
X (100% @ 50˚C)
|
|
Methyl alcohol
|
N/A
|
|
Aniline
|
OK (80˚C)
△ (100˚C)
|
|
Benzaldehyde
|
OK (25˚C)
△ (50˚C)
|
|
Benzene
|
OK (80˚C)
△ (100˚C)
|
|
Benzyl alcohol
|
OK
|
|
Benzyl chloride
|
OK (100˚C)
|
|
Corn oil
|
OK
|
|
Ethanol
|
OK
|
|
Ethylene glycol
|
OK
|
|
Fatty acid
|
N/A
|
|
Formaldehyde
|
OK (37% @ 80˚C)
|
|
Formic acid
|
OK (20%)
|
|
Hexane
|
OK
|
|
Lactic acid
|
OK (50˚C)
△ (80˚C)
X (100˚C)
|
|
Methanol
|
OK
|
|
Paraffin oil
|
N/A
|
|
Petroleum
|
OK
|
|
Phenol
|
OK (100% @ 65˚C)
△ (100% @ 80˚C)
|
|
Propane, liq
|
OK
|
|
Propanol
|
OK (80˚C)
△ (100˚C)
|
|
Stearic acid
|
OK
|
|
Tannic acid
|
OK (110˚C)
|
|
Tartaric acid
|
N/A
|
|
Toluene
|
OK (80˚C)
△ (100˚C)
|
|
Urea
|
N/A
|
|
Inorganic compound
|
Ammonia
|
N/A
|
|
Ammonium chloride
|
OK
|
|
Ammonium hydroxide
|
N/A
|
|
Ammonium nitrate
|
OK
|
|
Ammonium sulfate
|
OK
|
|
Aqua regia
|
N/A
|
|
Barium chloride
|
OK
|
|
Barium hydroxide
|
OK
|
|
Brine
|
N/A
|
|
Calcium Chloride
|
OK
|
|
Calcium hydroxide
|
OK
|
|
Carbonic acid
|
OK
|
|
Chloric acid
|
N/A
|
|
Chlorine
|
OK (100˚C)
|
|
Detergent
|
N/A
|
|
Hydrobromic acid
|
OK (50% @ 100˚C)
|
|
Hydrochloric acid
|
OK (20% @ 100˚C)
△ (35% @ 120˚C)
|
|
Hydrofluoric acid
|
N/A
|
|
Hydrogen peroxide
|
OK (80˚C)
|
|
Nitric acid
|
OK (60% @ 65˚C)
△ (60% @ 80˚C)
X (60% @ 100˚C)
|
|
Phosphoric acid
|
OK (85%)
|
|
Potassium hydroxide
|
OK (80˚C)
△ (100˚C)
X (110˚C)
|
|
Potassium nitrate
|
OK
|
|
Potassium sulfate
|
OK
|
|
Sodium carbonate
|
OK
|
|
Sodium hydroxide
|
OK (10˚C)
X (40˚C)
|
|
Sodium nitrate
|
OK△X
|
|
Sulfuric acid
|
OK
|
|
Sulfur dioxide
|
OK (98% @ 65˚C)
△ (98% @ 80˚C)
X (98% @ 100˚C)
X (fuming)
|
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