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Chemische resistentie PTFE

PTFE wordt aangetast door sommige alkali metalen (gesmolten of in oplossing) en aparte fluorverbindingen bij hoge temperaturen en/of drukken. Sommige organische en gehalogeneerde oplosmiddelen worden geabsorbeerd waardoor kleine dimensionele veranderingen ontstaan, maar deze effecten zijn fysiek en ook omkeerbaar.

Opmerking: De chemische weerstand van elk polymeer wordt grotendeels bepaald door de chemische structuur van het materiaal en de sterkte van de zwakste schakel in deze structuur. 

Legenda

R - Resistant/Resistent
LR - Limited Resistance/Gedeeltelijk resistent 
NR - Not Recommended/Niet aangeraden
ND - No Data/Geen data

Feitelijke eigenschappen kunnen veranderen als gevolg van verwerkingsmethode, compound type, geëxtrudeerde afmetingen en andere variabelen. Het is de verantwoordelijkheid van de eindgebruiker om de geschiktheid volledig te testen voor de specifieke toepassing.

Chemical Resistance
  20°C/68°F 60°C/140°F 100°C/212°F
Acetaldehyde R R R
Acetic acid (10%) R R R
Acetic acid (glac./anh.) R R R
Acetic anhydride R R R
Aceto-acetic ester R R R
Acetone R R R
Other ketones R R R
Acetonitrile R R R
Acetylene R R R
Acetyl salicylic acid R R R
Acid fumes R R R
Alcohols R R R
Aliphatic esters R R R
Alkyl chlorides ND ND ND
Alum R R R
Aluminium chloride R R R
Aluminium sulphate R R R
Ammonia, anhydrous R R R
Ammonia, aqueous R R R
Ammonium chloride R R R
Amyl acetate R R R
Aniline R R R
Antimony trichloride ND ND ND
Aqua regia R R R
Aromatic solvents R R R
Ascorbic acid R R R
Beer R R R
Benzaldehyde R R R
Benzene R R R
Benzoic acid R R R
Benzoyl peroxide R R R
Boric acid R R R
Brines, saturated R R R
Bromide (K) solution R R R
Bromine R R R
Bromine liquid, tech. R R R
Bromine water, saturated aqueous R R R
Butyl acetate R R R
Calcium chloride R R R
Carbon disulphide R R R
Carbonic acid R R R
Carbon tetrachloride R R R
Caustic soda & potash R R R
Cellulose paint R R R
Chlorates of Na, K, Ba R R R
Chlorine, dry R R R
Chlorine, wet R R R
Chlorides of Na, K, Ba R R R
Chloroacetic acid R R R
Chlorobenzene R R R
Chloroform R R R
Chlorosulphonic acid R R R
Chromic acid (80%) R R R
Citric acid R R R
Copper salts (most) R R R
Cresylic acids (50%) R R R
Cyclohexane R R R
Detergents, synthetic R R R
Emulsifiers, concentrated R R R
Ether R R R
Fatty acids (>C6) R R R
Ferric chloride R R R
Ferrous sulphate R R R
Fluorinated refrigerants R R R
Fluorine, dry R R NR
Fluorine, wet ND ND ND
Fluorosilic acid ND ND ND
Formaldehyde (40%) R R R
Formic acid R R R
Fruit juices R R R
Gelatine R R R
Glycerine R R R
Glycols R R R
Glycol, ethylene R R R
Glycolic acid R R R
Hexamethylene diamine R R R
Hexamine R R R
Hydrazine R R R
Hydrobromic acid (50%) R R R
Hydrochloric acid (10%) R R R
Hydrochloric acid (conc.) R R R
Hydrocyanic acid R R R
Hydrofluoric acid (40%) R R R
Hydrofluoric acid (75%) R R R
Hydrogen peroxide (30%) R R R
Hydrogen peroxide (30 - 90%) R R R
Hydrogen sulphide R R R
Hypochlorites R R R
Hypochlorites (Na 12-14%) R R R
Iso-butyl-acetate R R R
Lactic acid (90%) R R R
Lead acetate R R R
Lead perchlorate ND ND ND
Lime (CaO) R R R
Maleic acid R R R
Manganate, potassium (K) R R R
Meat juices R R R
Mercuric chloride R R R
Mercury R R R
Methanol R R R
Methylene chloride R R R
Milk products R R R
Moist air R R R
Molasses R R R
Monoethanolamine R R NR
Naptha R R R
Napthalene R R R
Nickel salts R R R
Nitrates of Na, K and NH3 R R R
Nitric acid (<25%) R R R
Nitric acid (50%) R R R
Nitric acid (90%) R R R
Nitric acid (fuming) R R R
Nitrite (Na) R R R
Nitrobenzene R R R
Oils, diesel R R R
Oils, essential R R R
Oils, lubricating + aromatic additives R R R
Oils, mineral R R R
Oils, vegetable and animal R R R
Oxalic acid R R R
Ozone R R R
Paraffin wax R R R
Perchloric acid R R R
Petroleum spirits R R ND
Phenol R R R
Phosphoric acid (20%) R R R
Phosphoric acid (50%) R R R
Phosphoric acid (95%) R R R
Phosphorous chlorides R R R
Phosphorous pentoxide ND ND ND
Phthalic acid R R R
Picric acid R R R
Pyridine R R R
Salicyl aldehyde R R R
Sea water R R R
Silicic acid R R R
Silicone fluids R R R
Silver nitrate R R R
Sodium carbonate R R R
Sodium peroxide R R R
Sodium silicate R R R
Sodium sulphide R R R
Stannic chloride R R R
Starch R R R
Sugar, syrups & jams R R R
Sulphamic acid ND ND ND
Sulphates (Na, K, Mg, Ca) R R R
Sulphites R R R
Sulphonic acids R R R
Sulphur R R R
Sulphur dioxide, dry R R R
Sulphur dioxide, wet R R R
Sulphur dioxide (96%) R R R
Sulphur trioxide R R R
Sulphuric acid (<50%) R R R
Sulphuric acid (70%) R R R
Sulphuric acid (95%) R R R
Sulphuric acid, fuming R R R
Sulphur chlorides R R R
Tallow R R R
Tannic acid (10%) R R R
Tartaric acid R R R
Trichlorethylene R R R
Urea (30%) R R R
Vinegar R R R
Water, distilled. R R R
Water, soft R R R
Water, hard R R R
Wetting agents (<5%) R R R
Yeast R R R
Zinc chloride R R R

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