Additives can improve the dimensional stability, heat and fungal resistance of TPUs. They also reduce friction, increase flame retardancy, and weatherability. Some examples of additives include antioxidants, UV absorbers, and hindered amine stabilizers. They protect polyurethanes from UV light-induced oxidation. This makes TPUs suitable for a wide range of applications that may require both thermal and/or light stability.
Other specialty grades include:
Reinforced TPU – When mixed with glass or mineral fillers/fibers, it becomes a structural engineering polymer with desirable properties of abrasion resistance, high impact strength, good fuel resistance, and high flow characteristics.
Flame Retardancy – Flame retardant TPU grades are widely used to provide tear resistance and toughness for cable jacketing.