Other Names:
PET, PETE, Polyester, Terylene, Dacron, Melinex, Mylar
Specification Summary
- Purity: ≥99%
- Form: Granules, pellets, sheets, films, fibers
- CAS No.: 25038-59-9
- Molecular Formula: (C<sub>10</sub>H<sub>8</sub>O<sub>4</sub>)<sub>n</sub>
- Molecular Weight: 192.17 g/mol (per repeating unit)
Product Description
Polyethylene Terephthalate (PET) is a semi-crystalline thermoplastic polymer with excellent mechanical strength, dimensional stability, and chemical resistance. It appears as white, milky, or colorless translucent granules, sheets, or films. PET is insoluble in water and most polar solvents but dissolves in select organic solvents (e.g., phenol, chlorinated hydrocarbons) at elevated temperatures. It is non-corrosive, non-alkaline, and exhibits outstanding resistance to acids, bases, alcohols, and oils. Its high tensile strength, low moisture absorption, and exceptional fatigue resistance make it ideal for demanding industrial applications.
Polyethylene Terephthalate Specification Table
| Property | Value/Description |
| Density | 1.36–1.68 g/cm³ |
| Melting Point | 250–255 °C |
| Tensile Strength at Yield | 79 MPa |
| Flexural Modulus | 3100–3200 MPa |
| Elongation at Break | 10–400% |
| Water Absorption (24 hrs) | 0.03–0.6% |
| Dielectric Constant (1 MHz) | 3.0–3.5 |
| Volume Resistivity | >10¹⁴ Ω·cm |
| Thermal Conductivity | 0.31 W/(m·K) |
| Heat Deflection Temperature | 70–100 °C |
| Chemical Resistance | Excellent (acids, bases, oils, alcohols) |
Downloadable TDS:
A comprehensive Technical Data Sheet (TDS) is available for download, providing detailed mechanical, thermal, and electrical specifications, along with processing guidelines.
Application Sectors and Industries of Polyethylene Terephthalate
Packaging:
PET dominates the packaging industry for bottles, jars, films, and trays due to its clarity, lightweight nature, and superior barrier properties against moisture and gases. It is FDA-approved for food contact, ensuring safe preservation of beverages, snacks, and pharmaceuticals.
Textiles:
PET fibers (polyester) are used in clothing, upholstery, carpets, and industrial fabrics. Their high tensile strength, wrinkle resistance, and durability make them ideal for both everyday wear and technical textiles.
Automotive:
PET is used in under-hood components, interior trims, and electrical insulation due to its heat resistance, dimensional stability, and ability to withstand harsh chemicals and vibrations.
Electronics:
As an insulator in capacitors, connectors, and circuit boards, PET’s dielectric properties and resistance to tracking ensure reliable performance in high-voltage environments.
Medical:
PET is used in surgical sutures, implantable devices, and diagnostic equipment packaging. Its biocompatibility, sterilizability, and resistance to bodily fluids meet stringent healthcare standards.
Construction:
PET sheets and films are employed in roofing membranes, insulation panels, and protective coatings. Their UV resistance and mechanical strength enhance longevity in outdoor applications.
Consumer Goods:
From household containers to sports equipment, PET’s impact resistance, ease of molding, and recyclability support sustainable product design.
Industrial:
PET is used for gears, bearings, and conveyor belts due to its low friction, wear resistance, and ability to operate in high-stress environments.
Renewable Energy:
PET films are integral to solar panel backsheets and wind turbine components, offering weather resistance and electrical insulation.
Aerospace:
Lightweight PET composites are used in aircraft interiors and structural components, reducing weight while maintaining strength and flame retardancy.
Packaging Types
- 25 kg Bags: Moisture-resistant bags for granules or pellets, suitable for manual handling and automated dispensing.
- Bulk Bags (FIBC): 500–1000 kg capacity for industrial-scale processing, designed for forklift or crane handling.
- Drums: Sealed containers for PET powder or specialty compounds, ensuring contamination-free storage.
- Rolls and Sheets: Pre-cut or continuous films/sheets in standardized thicknesses for direct fabrication.
- Custom Formats: Tailored solutions such as preforms, fibers, or molded parts to meet specific customer requirements.
Polyethylene Terephthalate (PET) combines versatility, durability, and sustainability, making it indispensable across industries from packaging to aerospace. For detailed technical specifications, safety guidelines, and compliance certifications, download the TDS.
