The name of PET polyethylene terephthalate is linear saturated polyester. In 1941, first by the British J.tt.Whinfield and J.T.Dickon developed successful pet as fiber materials have 53 year history, Imperial Chemical Company (1.c.I) in 1946 in polyester (Teleron) fiber into production, then the United States DuPont (Dupent) in 1948 to "Lun" (Dacron) fiber is put into production.
? ?The main raw materials of p-xylene and PET (PTA) in terephthalic acid PET has excellent properties (heat resistance, chemical resistance. Strong toughness, electrical insulation, safety, etc., the price is cheap, so widely used for fiber, film, engineering plastics, polyester bottles, etc..
? ?International polyester thermoplastic plastic industrial products have the following 6 aspects (the industrialization of the sale of goods has been formed).
(1) liquid crystalline polymer
(2) poly (ethylene terephthalate) (PBT)
(3) poly naphthalene two formic acid glycol ester (PEN)
(4) poly (ethylene terephthalate) engineering grade PET
(5) poly (ethylene terephthalate) standard grade PET
(6) poly (ethylene terephthalate) recovery grade PET (including blends and 100% recycled materials)
PET: a Dupont R~ ITE FR 530 as an example of its performance index, 9j:
Tensile strength 152MPa
Bending modulus 10343MPa DAM
Impact strength of cantilever beam (OD) m / 85J
Specific gravity 1.67
Hot deformation temperature (1.8MPa) 224
Melting point 254
Oxygen index 33%UL flame retardant V grade 0
Temperature index of electrical 150~C, mechanical shock 150
Hot wire 330 S
Volume resistivity 10,]ohm-cm R
Dielectric strength 16.9Kv / mm
Dielectric constant 103Hz at 3.810 Hz 3.7
Dielectric loss 103Hz 0.01110 Hz 0.018
Advantages: light weight, beautiful appearance, corrosion resistance, sealing, easy to recycle and so on.
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