What is polycarbonate?
List of Contents
Polycarbonates (PC) are a group of thermoplastic polymers that include carbonate groups in their chemical structures. Polycarbonates are widely used in molding and thermal modification of modern chemical industries. Polycarbonate resin was developed by Dr. Daniel Fox at General Electric Plastics in 1953 and was first mass-marketed in 1958.
Other names are Macrolon, Lexan, Merlon. Its monomer is bisphenol A and is soluble in methylformamide (DMF), dioxane, pyridine, and cresol.
Its density is 1.20 to 1.22 g / cm ^ 3 and its melting temperature is 220 to 230 ° C.
“Polycarbonate” is a hard and transparent material that is used as a substitute for glass in construction.
PC sheets
Polycarbonate sheets are of various structures and this property makes it possible to use it on any type of structure and has a wide range of applications.
Flat pc sheet is similar in appearance to glass and is produced with dimensions of 3.5 x 2.5 / 2 meters and has an anti-uv layer for protection against sunlight and also has the advantage of being light and can replace glass.
These polymer sheets are used in six types of roofs, parking lots, false ceilings and walls of sheds. The use of this sheet in the list of building materials has the highest amount because it is resistant to atmospheric factors such as storms and hail and natural disasters such as earthquakes.
Manufacture of yarn, automotive industry, car lights, battery storage, electrical appliances such as plugs and caps, home appliances, baby milk and food bottles, lenses and spectacles, safety and sunglasses, compact discs, glass and enclosures Bulletproof vests are another application.
The light weight of polycarbonate sheet plays an important role in its transportation and the possibility of transporting it in large quantities and low weight reduces the cost and traffic of transportation.
Polycarbonate detection methods:
- Its flame color is yellow-orange.
- Black smoke with carbon particles
- It smells like burning phenol.
- It drips in the flame with large drops.
Unique properties of polycarbonates:
- These polymer sheets are very stable and the passage of time and sunlight do not affect its color.
- Another advantage of these polymer sheets is their non-flammability and fire resistance, and in the event of a fire, they only melt and go out.
- They are also resistant to chemicals and corrosion. Their ability to bend makes them widely used as a convex roof.
- Due to the fact that polycarbonates have very little heat exchange, they are used in the side walls or roofs of greenhouses, and in different seasons, it is difficult for hot and cold air to escape from the greenhouse.
- Using them saves energy.
Strengths and limitations of high temperature polycarbonate grades
| Strengths | Limitations |
| Very clear transmits light well glass | Easily attacked by hydrocarbons and bases |
| high resistance even down to -20 ° C | After prolonged exposure to water at temperatures above 60 ° C, their mechanical properties begin to degrade |
| high mechanical retention up to 140 ° C | Proper drying before processing requires |
| Anti-flame | Low fatigue tolerance |
| offers good electrical insulation properties that are not affected by water and temperature | Prone to yellowing after UV exposure |
| It has good abrasion resistance | |
| Can withstand repeated steam sterilization |
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+98021-86053175.
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