● Polycarbonates (PC) - Strong and Transparent Engineering Thermoplastics
Polycarbonates (PC) are a group of thermoplastic polymers containing carbonate groups in their chemical structures. Polycarbonates used in engineering are strong, tough materials, and some grades are optically transparent. They are easily worked, molded, and thermoformed. Because of these properties, polycarbonates find many applications.
● Chemical and physical properties
Polycarbonate is a durable material. Although it has high impact-resistance, it has low scratch-resistance. Therefore, a hard coating is applied to polycarbonate eyewear lenses and polycarbonate exterior automotive components. The characteristics of polycarbonate compare to those of polymethyl methacrylate (PMMA, acrylic), but polycarbonate is stronger and will hold up longer to extreme temperature. Polycarbonate is highly transparent to visible light, with better light transmission than many kinds of glass.
Polycarbonate has a glass transition temperature of about 147 °C (297 °F; 420 K), so it softens gradually above this point and flows above about 155 °C (311 °F; 428 K).[8] Tools must be held at high temperatures, generally above 80 °C (176 °F; 353 K) to make strain-free and stress-free products. Low molecular mass grades are easier to mold than higher grades, but their strength is lower as a result. The toughest grades have the highest molecular mass, but are much more difficult to process.
Polycarbonate can undergo large plastic deformations without cracking or breaking. As a result, it can be processed and formed at room temperature using sheet metal techniques, such as bending on a brake. Even for sharp angle bends with a tight radius, heating may not be necessary. This makes it valuable in prototyping applications where transparent or electrically non-conductive parts are needed, which cannot be made from sheet metal. PMMA/Acrylic, which is similar in appearance to polycarbonate, is brittle and cannot be bent at room temperature.
* 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
|
PC
|
|
Organic acids
|
Acetic acid
|
OK (20%)
|
|
Acetic acid, glacial
|
OK
|
|
Acetic anhydride
|
X
|
|
Citric acid
|
OK
|
|
Organic compound
|
Acetaldehyde
|
X
|
|
Acetone
|
X
|
|
Methyl alcohol
|
OK (20%)
|
|
Aniline
|
X
|
|
Benzaldehyde
|
X
|
|
Benzene
|
X
|
|
Benzyl alcohol
|
X
|
|
Benzyl chloride
|
N/A
|
|
Corn oil
|
N/A
|
|
Ethanol
|
OK
|
|
Ethylene glycol
|
OK
|
|
Fatty acid
|
OK
|
|
Formaldehyde
|
OK (40%)
|
|
Formic acid
|
OK
|
|
Hexane
|
X
|
|
Lactic acid
|
OK
|
|
Methanol
|
OK
|
|
Paraffin oil
|
OK
|
|
Petroleum
|
N/A
|
|
Phenol
|
OK
|
|
Propane, liq
|
X
|
|
Propanol
|
OK
|
|
Stearic acid
|
OK
|
|
Tannic acid
|
N/A
|
|
Tartaric acid
|
OK
|
|
Toluene
|
X
|
|
Urea
|
OK
|
|
Inorganic compound
|
Ammonia
|
X
|
|
Ammonium chloride
|
OK
|
|
Ammonium hydroxide
|
X
|
|
Ammonium nitrate
|
N/A
|
|
Ammonium sulfate
|
OK
|
|
Aqua regia
|
X
|
|
Barium chloride
|
OK
|
|
Barium hydroxide
|
X
|
|
Brine
|
N/A
|
|
Calcium Chloride
|
N/A
|
|
Calcium hydroxide
|
X
|
|
Carbonic acid
|
OK
|
|
Chloric acid
|
N/A
|
| Chloric |
N/A |
|
Chlorine
|
N/A |
|
Detergent
|
X
|
|
Hydrobromic acid
|
N/A
|
|
Hydrochloric acid
|
X
|
|
Hydrofluoric acid
|
X
|
|
Hydrogen peroxide
|
OK (30%)
|
|
Nitric acid
|
OK (5%)
OK (40%)
|
|
Phosphoric acid
|
OK (<40%)
|
|
Potassium hydroxide
|
X
|
|
Potassium nitrate
|
OK
|
|
Potassium sulfate
|
OK
|
|
Sodium carbonate
|
OK
|
|
Sodium hydroxide
|
X
|
|
Sodium nitrate
|
N/A
|
|
Sulfuric acid
|
X
|
|
Sulfur dioxide
|
N/A
|
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