polyvinyl chloride. what is polyvinyl chloride abbreviated as pvc the third-most widely produced...
TRANSCRIPT
POLYVINYL CHLORIDE
WHAT IS POLYVINYL CHLORIDE
• Abbreviated as PVC• The third-most widely
produced plastic• Thermoplastic• Pure polyvinyl chloride is
white, brittle solid
HISTORY
• First discovered in 1835 by French chemist, Henri Victor Regnault
• Then in 1872 by German chemist, Eugen Baumann
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)
POLYMERISATION
CC
H
HH
Cl
CC
H
HH
Cl
CC
H
HH
Cl
CHEMICAL THINGS
PROPERTIESProperties
Melting Point 100 – 260 °CResistivity / Insulation Good
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.
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
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
USES
• Pipes
USES
• Electrical Cables
USES
• Credit Card