Pvc

PVCWhat is PVC?PVC (Poly Vinyl Chloride) is a versatile

thermoplastic material obtained from ethylene and salt by vinyl chloride polymerisation

It is the best explored materials in the world due to serious scientific researches carried in order to disprove accusations

Synthesis of PVCSuspension polymerisation:First the raw material VCM is pressurized

and liquified and then fed into the polymerisation reactor which contains water and suspending agents

Through high speed agitation within the reactor small droplets of VCM are obtained

Next the initiator is fed into the reactor

PVC is produced by reaction under a few bar at 40⁰ C – 60⁰ C

PVC obtained through suspension polymerisation is suspended in water as particles of 50 – 200 µm

Therefore the slurry discharged from the polymerisation reactor is stripped of residual monomer, dehydrated and the particle size is controlled by screening to yield PVC in the form of white powder

Applications of PVCConstruction windows :PVC has been used as construction product

for half a centuryUnplasticized PVC is one of the stiffest

polymers at normal temperature and shows little deterioration after many years in service

Health Care – Blood Bags:Flexible PVC is used to make storage bags

and in fact the only material approved by the European pharmacopoeia

The other health care products of PVC are i)Artificial skin ii)Blood transfusion sets

iii) Blood vessels for artificial kidneys

Electronic Cables:PVC was first used as cable insulation as a

replacement for rubber during second world war

PVC cables do not harden and crack over time and find use in many application from tele communications to electric blankets

These cables are recyclable by recovinyl

Automotives – Cars:PVC brings both high performance qualities

and important cost benefits to the automotive industry

Instrument panels, seat coverings, head lining, protective strips, floor coverings and anti stone damage protection are things done by using PVC

Sports:PVC fabric has been used to create new

sporting venues in London alonePVC products applications performed well in

making sports surfaces, sports equipment and clothing

i) Protective barriers ii) Matting and wiring

Propertiesi) Weathering stability:

PVC is resistive to aggressive environmental factors is therefore the material of choice for roofing

ii) Versatility:PVC can be flexible and rigid

iii) Fire Protection:PVC is a material resistant to ignition due to its chlorine content

iv) Longevity:PVC products can last upto 100 years and even more

v) Energy Recovery: PVC has high thermal power When utilized in incinerators PVC provides power and heat for home and industry

vi) Barrier Properties:PVC can be made impervious to liquids and vapours

vii) Recyclability:PVC is recyclable more than other plastics

viii) Economical Efficiency:PVC is the cheapest of the large tonnage polymers providing many products with the best quality price ratio

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