physical properties of multiwall
& twinwall polycarbonate
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MULTIWALL | FASTENERS | TAPE | QUOTES | INSTALLATION ? | SHIPPING COSTS | RIDGE CAPS | POLY CHANNEL | ALUMINUM CHANNEL |
PHYSICAL PROPERTIES |
|
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. |
Our customer service staff can assist you in selecting the proper greenhouse covering!
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. Covers 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 |
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The following are considered safe: |
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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: |
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Cyclohexone |
Glycerine |
Perchloric Acid-Conc. |
Diesel Oil |
Heating Fuel |
Sulphur Dioxide |
Formic Acid |
Jet Fuel |
Turpentine |
Gasoline |
- |
- |
The following will attack polycarbonate: |
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Acetone |
Hydrochloric Acid-Conc. |
|
Acrylonitrile |
Hydrofluoric Acid-Conc. |
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Ammonia |
Iodine |
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Amyl Acetate |
Methanol |
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Benzene |
Methyl Ethyl Ketone |
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Bromine |
Perchloroethylene |
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Butyl Acetate |
Styrene |
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Caustic Soda |
Toluol |
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Chloroform |
Sulphuuric Acid-Conc. |
|
Dimethyl Formamide |
Xylene |
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Greenhouses Etcetera
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