UPE material datasheet


 

Ultra-high-molecular-weight polyethylene (UHMWPE, UHMW) is a subset of the thermoplastic polyethylene. Also known as high-modulus polyethylene, (HMPE), or high-performance polyethylene (HPPE), it has extremely long chains, with a molecular mass usually between 3.5 and 7.5 million amu. The longer chain serves to transfer load more effectively to the polymer backbone by strengthening intermolecular interactions. This results in a very tough material, with the highest impact strength of any thermoplastic presently made.

 

Polymerization of UHMWPE was commercialized in the 1950s by Ruhrchemie AG, which has changed names over the years. Today UHMWPE powder materials, which may be directly molded into a product's final shape, are produced by Ticona, Braskem, DSM, Teijin (Endumax), Celanese, and Mitsui. Processed UHMWPE is available commercially either as fibers or in consolidated form, such as sheets or rods.

 

Chemical and physical properties

 

UHMWPE is odorless, tasteless, and nontoxic. It is highly resistant to corrosive chemicals except oxidizing acids; has extremely low moisture absorption and a very low coefficient of friction; is self-lubricating (see boundary lubrication); and is highly resistant to abrasion, in some forms being 15 times more resistant to abrasion than carbon steel. Its coefficient of friction is significantly lower than that of nylon and acetal, and is comparable to that of polytetrafluoroethylene (PTFE, Teflon), but UHMWPE has better abrasion resistance than PTFE.

 

* 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

UPE

Organic acids

Acetic acid

OK (10% - 100% @ 20˚C)

 (80% - 100% @ 60˚C)

Acetic acid, glacial

 

Acetic anhydride

 

Citric acid

 

Organic compound

Acetaldehyde

 

Acetone

 

Methyl alcohol

OK (20˚C, 60˚C)

Aniline

 

Benzaldehyde

 

Benzene

△ (20˚C)

X (60˚C)

Benzyl alcohol

 

Benzyl chloride

 

Corn oil

 

Ethanol

 

Ethylene glycol

OK (20˚C, 60˚C)

Fatty acid

 

Formaldehyde

 

Formic acid

OK (20˚C, 60˚C)

Hexane

Lactic acid

Methanol

 

Paraffin oil

 

Petroleum

 

Phenol

 

Propane, liq

 

Propanol

 

Stearic acid

 

Tannic acid

 

Tartaric acid

 

Toluene

OK△X

Urea

 

Inorganic compound

Ammonia

OK (20˚C, 60˚C)

Ammonium chloride

OK (20˚C, 60˚C)

Ammonium hydroxide

 

Ammonium nitrate

OK (20˚C, 60˚C)

Ammonium sulfate

OK (20˚C, 60˚C)

Aqua regia

 

Barium chloride

 

Barium hydroxide

 

Brine

 

Calcium Chloride

OK (20˚C, 60˚C)

Calcium hydroxide

OK (20˚C, 60˚C)

Carbonic acid

 

Chloric acid

 

Chlorine

 

Detergent

 

Hydrobromic acid

 

Hydrochloric acid

OK (20˚C, 60˚C)

Hydrofluoric acid

 

Hydrogen peroxide

 

Nitric acid

OK (0% - 30% @ 20˚C)

 (30% - 50% @ 20˚C, 60˚C)

X (≥ 70% @ 20˚C, 60˚C)

X (Fuming @ 20˚C, 60˚C)

Phosphoric acid

 

Potassium hydroxide

OK (20˚C, 60˚C)

Potassium nitrate

 

Potassium sulfate

 

Sodium carbonate

OK (20˚C, 60˚C)

Sodium hydroxide

OK (20˚C, 60˚C)

Sodium nitrate

 

Sulfuric acid

OK (0% - 80% @ 20˚C)

 (98% @ 20˚C)

X (80% - 98% @ 60˚C)

X (Fuming @ 20˚C, 60˚C)

Sulfur dioxide

 

 

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