polyvinyl chloride. what is polyvinyl chloride abbreviated as pvc the third-most widely produced...
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POLYVINYL CHLORIDE
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WHAT IS POLYVINYL CHLORIDE
• Abbreviated as PVC• The third-most widely
produced plastic• Thermoplastic• Pure polyvinyl chloride is
white, brittle solid
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HISTORY
• First discovered in 1835 by French chemist, Henri Victor Regnault
• Then in 1872 by German chemist, Eugen Baumann
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CHEMICAL THINGS
• PVC is a polymer which is made from monomers called vinyl chloride.
• It is formed by the kind of polymerisation called “Addition”
• Its IUPAC name is called poly(1-chloroethene)
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POLYMERISATION
CC
H
HH
Cl
CC
H
HH
Cl
CC
H
HH
Cl
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CHEMICAL THINGS
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PROPERTIESProperties
Melting Point 100 – 260 °CResistivity / Insulation Good
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MANUFACTURING PROCESS
• Extrusion• The shaft (which is
called "Screw") in the cylinder is rotated to push resin forward
• Resin is melt by heat and kneaded
• While it is pushed forward, and then extruded from the outlet dies.
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MANUFACTURING PROCESS
• Thermal• Sheet or film
manufactured by the calendaring technology or the extrusion technology is heated to soften.
• Air in the metal mold is sucked out to press the melt material at an ambient pressure
• This is called "Vacuum Molding", which is used for the production of thin packaging material such as the egg package
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MANUFACTURING PROCESS
• Injection• This is a
technology to inject melt resin into the metal mold by pressure
• best suitable for production of PVC goods with three-dimensional structure such as sealed containers
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USES
• Pipes
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USES
• Electrical Cables
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USES
• Credit Card