polycarbonate physical properties
multiwall & twinwall polycarbonate physical properties

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Twinwall Polycarbonate Physical Properties

PHYSICAL PROPERTIES
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   Tensile at break (psi)

9,200

Elongation at yield (%)

6

Elongation at break (%)

110

Density (gm/cm3)

1.2

  Deflection temperature at 66 psi   

275F

       Heat distortion temperature     

275F

ASTM D-635 rate of burn   

1.65 in/mm.

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FLAMMABILITY

The resins used to make are specially developed for excellent flame retardant properties. Fire Reaction: ASTM D635-98: Linear Burn Rate (Parallel & Cross Section): 0

INSULATION

The twinwall profile gives effective heat-loss reductions when used. The following require caution: instead of regular glass. Savings of up to 50% have been documented. Insulation values Increase with thicker profiles, as noted in the Standards Table.

STORAGE OF PANELS

The sheets should be stacked on a solid flat surface. Store out of direct sun to avoid accumulated heat effects. Cover for protection. Never use flexible vinyl sheet as a cover as the plasticizers may react with the polycarbonate.

CLEANING OF INSTALLED PANELS

It is very important to use only warm soapy water for cleaning. Never use abrasive cleaners, solvents or sharp tools on the sheets. Always rinse well with clean water after washing. Wipe dry with a soft cloth to avoid water spotting in hard water areas. Contact the manufacturer for reference to specific cleaner brands.

Twinwall Polycarbonate Chemical Resistance

CHEMICAL RESISTANCE

The following are considered safe:

Acetic Acid

Carbon Monoxide

Mercury

Ammonium Chloride

Citric Acid - 10%

Methane

Antimony Chloride

Copper Sulphate

Oxygen

Borax in Water

Ethyl Alcohol - 95%  

Ozone

Butane

Ethylene Glycol

Sulphur

Calcium Chloride

Formalin - 10%

  Urea

Calcium Hypochloride

Hydrochloric Acid - 20%

  Water

Carbon Dioxide

Hydrofluoric Acid - 5%

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The following require caution:

Cyclohexone

Glycerine

Perchloric Acid-Conc.

Diesel Oil

Heating Fuel

Sulphur Dioxide

Formic Acid

Jet Fuel

Turpentine

Gasoline

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The following will attack polycarbonate:

Acetone

Hydrochloric Acid-Conc.

Acrylonitrile

Hydrofluoric Acid-Conc.

Ammonia

Iodine

Amyl Acetate

Methanol

Benzene

Methyl Ethyl Ketone

Bromine

Perchloroethylene

Butyl Acetate

Styrene

Caustic Soda

Toluol

Chloroform

Sulphuuric Acid-Conc.

Dimethyl Formamide

Xylene

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