BLOGGER TEMPLATES AND TWITTER BACKGROUNDS

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Tuesday 10 November 2009

Material Plastic

Polyethylene terephthalate (PET)

History of PET
• The original invention of PET was made in 1941.
• The modifications of PET leaded during the years to a
various number of different types of PET.
• The first application of PET was the production of
fibers and filaments. Known brand names are for
example also today Diolen, Trevira.
• Always they are polycondensates, that means a row of
molecules joined by chemical bondings of the same
type.
Each single molecule consists or carbon atoms,
hydrogen atoms and oxygen atoms.
• Therefore no corrosive or aggressive gases will arise at
the disposal or burning of PET products.
• At complete burning products as water and carbon
dioxide will be gained.
• After burning a tiny carbon dioxide and ash rest of 0,01
% will remain.

PET - Properties
• very high transparancy
• high hardness, strength and very good stiffness
• good toughness, even at cold temperatures
• operating temperature between -40 °C bis +100 °C
• physiological harmless
• high abrasion resistance
• good electrical isolation properties
• good stress cracking resistance, weathering
resistance and hot air resistance
• good chemical resistance
• small water absorption

PET - Applications
• lamp sockets
• motor bearing plate
• windshield wiper arm
• sliding window frame
• oven opener grip
• switcher
• relais
• sensors

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