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Formula: Polyester, PET, PETP

Form: Granule

Material: Polyethylene terephthalate (PET)

CAS Number: 25038-59-9

Commodity: Polymers

Nominal Granule Size: 3-5mm

Type: Copolymer

Structure: Semi Crystalline

Crystallinity: >50%

Inherent Viscosity: 0.80 dl/g

Additives: maximum 1ppm Acetaldehyde

Color: Natural

PET Granules

PET Granules combine high crystallinity, good processability, and excellent mechanical and barrier properties, serving as a feedstock for injection molding, extrusion, and fiber production. With low moisture uptake and strong resistance to a wide range of chemicals, PET granules are widely used in packaging, automotive, and electrical applications. Industries employ them to manufacture bottles, films, fibers, and precision-molded components. Specific applications include moisture-resistant electrical housings, dimensionally stable gear components, and high-barrier food packaging containers. In research, PET granules are utilized for polymer blending studies, development of nanocomposite materials, and evaluation of recycling processes for sustainable product design. Their combination of process versatility, structural performance, and recyclability makes them essential in modern engineering and manufacturing.

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Properties

Reference & Citations

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Material Properties for Polymers

Chemical Resistance

Element	Value
Acids - concentrated	Good-Poor
Acids - dilute	Good
Alcohols	Good
Alkalis	Poor
Aromatic hydrocarbons	Good-Fair
Greases and Oils	Good
Halogenated Hydrocarbons	Good-Poor
Halogens	Fair-Poor
Ketones	Good-Fair

Mechanical Properties

Element	Value
Coefficient of friction	0.2-0.4
Hardness - Rockwell	M94-101
Poisson's ratio	0.37-0.44
Tensile modulus( GPa )	02-Apr
Izod impact strength( J m⁻¹ )	13-35
Tensile strength( MPa )	80, for biax film 190-260

Electrical Properties

Element	Value
Dielectric constant @1MHz	3
Dissipation factor @ 1kHz	0.002
Dielectric strength( kV mm⁻¹ )	17
Surface resistivity( Ohm/sq )	10¹³
Volume resistivity( Ohmcm )	>10¹⁴

Physical Properties

Element	Value
Flammability	HB
Radiation resistance	Good
Refractive index	1.58-1.64
Resistance to Ultra-violet	Fair?
Limiting oxygen index( % )	21
Water absorption - equilibrium( % )	0.7
Water absorption - over 24 hours( % )	0.1
Density( gcm⁻³ )	1.3-1.4

Thermal Properties

Element	Value
Heat-deflection temperature - 0.45MPa( C )	115
Heat-deflection temperature - 1.8MPa( C )	80
Lower working temperature( C )	20
Upper working temperature( C )	115-170
Specific heat( J K⁻¹ kg⁻¹ )	1200-1350
Thermal conductivity( W m⁻¹ K⁻¹ )	0.15-0.4@23°C
Coefficient of thermal expansion( x10⁻⁶ K⁻¹ )	20-80