Page 187 - Fundamental of Engineering Design

◦ PP (Polypropylene) is a semi-rigid and lightweight material that is commonly

used in storage and packaging applications. Polypropylene is great for high-
cycle, low strength applications due to its fatigue resistance, semi-flexible,
and lightweight characteristics.

◦ PE/HDPE (High-Density Polyethylene) : Food Containers and Lids, medical

objects, objects that float, watertight, lightweight yet strong, FDA approved
and recyclable

◦ PEEK (polyether ether ketone) is a colorless, organic thermoplastic polymer

that achieves some of the best results out of all thermoplastics worldwide.
High durability and high impact strength. Very high heat resistance It is part

of the polyaryletherketone (PAEK) family. Used in industries as medical, oil
and gas industry, aerospace and automotive

◦ PMMA (polymethyl methacrylate) good thermal properties, including high
dimensional stability. Dimensional stability is maintained at temperatures of

up to about 90 degrees Celsius or down to -40 degrees Celsius. The finished
material has an impact resistance that is up to 17 times higher than that of

conventional glass. This makes the material suitable for demanding work. It

also has high hardness and rigidity. Beside it has high impact resistance, long
durability, low flexibility and light diffusion.

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