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What is Polycarbonate?

Polycarbonate is a thermoplastic with an aromatic polycarbonate ester bond, a balance of excellent mechanical, heat resistance, cold resistance and electrical properties, as well as transparent and magnetic properties. In 1956, Schnell of Bayer, West Germany, announced polycarbonate based on bisphenol A, and the company's "macrohol" (film) and "macrolon" (molded materials) were the first industrial products to be shipped to the market in 1958, and GE's "Rexane" was industrialized in the United States in 1960.

Mechanical Properties of Polycarbonate

The impact strength of the polycarbonate is 250 times stronger than that of glass, and the flexural strength and tensile strength are excellent.

Thermal Properties of Polycarbonate

It is an excellent resin that maintains physical properties from -50℃ to 140℃ and can be used safely anywhere in the world.

Material	Thermal deformation temperature(℃)
Polycarbonate	135 ~ 140
Acrylic	71 ~ 102
ABS	71 ~ 107
FRP	>200
PVC	60 ~ 77

Optical Properties of Polycarbonate

As shown in the spectrum, the polycarbonate sheet transmits 82-92% light in the visible light area. The figure below shows the light transmittance according to the wavelength change and the light transmittance according to the thickness change.

Acoustic Properties of Polycarbonate

In general, as a uniform material, the transmission loss according to the so-called mass is proportional to the surface density. However, rubber, etc., are not always proportional to mass, and the transmission loss is greater than the mass calculation. The PC sheet has similar properties and is slightly larger than the calculation of mass.

Chemical Resistance of Polycarbonate

Polycarbonates are generally stable in alcohol, oil, and weak acids, and relatively stable in weak alkalinity and strong acids. But in aromatic hydrocarbons, chlorine aliphatic hydrocarbons, they dissolve. In addition, care should be taken as there are weaknesses such as cracking at high temperatures or under load, and special attention should be paid to the following drugs:

State of weakness	Chemical
Disintegration and whitening	caustic soda, caustic potassium, ammonia
Yellow stool	acetic acid, hydrogen peroxide, chlorine
Swelling and whitening	Swelling white aromatic compounds (benzene, toluene, etc.), others (carbon tetrachloride, acetone, ethyl complex, methanol, etc.)