Print speed: The optimal speed is between 15 and 20 mm/s to ensure good layer adhesion and minimize filament bending issues.
Printing Temperature: Extrude TPU filaments at temperatures between 225 and 250°C. Higher temperatures improve flow but may affect dimensional accuracy.
Extrusion Settings: Adjust the extrusion multiplier to control filament flow and ensure a strong bond between layers.
Rafts and Skirts: Rafts are generally unnecessary due to the low warpage of TPU parts. Instead, use a skirt to prime the extruder and ensure filament flow at the start of the print.
Retraction: Disable retraction to avoid filament stretching and nozzle clogging, which are common problems with flexible TPU filaments.
Conclusion
Thermoplastic polyurethane (TPU) is an invaluable material for designers and manufacturers due to its versatility, durability, and wide range of properties. By understanding the different types of TPU, their properties, and potential modifications, industries can make informed decisions to leverage the benefits of TPU in various applications.
Whether used in automotive parts, medical devices, consumer products or industrial components, TPU offers a robust and adaptable solution that meets the demands of modern manufacturing.Polyethylene terephthalate (PET) is a versatile thermoplastic polymer that is widely used in a variety of design applications, from packaging to textiles and beyond. In this in-depth guide, we look at the properties, uses, manufacturing processes, and comparisons of PET plastic with other polymers.
Polyethylene terephthalate, commonly known as first dataset PET, belongs to the family of polyester-type polymers. It is a transparent, strong and lightweight plastic that can be easily shaped and molded into different forms.
PET plastic is widely recognized for its durability, transparency, and excellent barrier properties against moisture and gases. These characteristics make it a suitable material for a wide range of applications.
PET plastic material
PET material properties
Property Description
Chemical formula (C10H8O4)n
Molecular weight About 192.17 g/mol
Density 1.3 g/cm³
Melting point 250-260 °C (482-500 °F)
Glass transition temperature 70-80 °C (158-176 °F)
Tensile strength 55-75 MPa (8,000-10,900 psi)
Young's modulus 2.0-2.7 GPa (290,000-391,000 psi)
Water absorption Very low, typically less than 0.8% by weight
Transparency Excellent clarity and transparency
Chemical resistance Resistant to many chemicals, sensitive to alkalis
Recyclability Highly recyclable, commonly processed to near-virgin properties
UV resistance Good UV resistance, suitable for exterior applications when stabilized