How does acrylic fabric’s resistance to thermal degradation compare to polypropylene?

Acrylic fabric and polypropylene are both popular synthetic fibers, but they differ significantly in their resistance to thermal degradation. Acrylic fabric, derived from acrylonitrile, can withstand moderate heat but begins to degrade at temperatures above 150°C (302°F), losing strength and becoming brittle. In contrast, polypropylene, a thermoplastic polymer, has a higher melting point around 160°C (320°F) and exhibits better thermal stability under continuous heat exposure.

While acrylic fabric is more susceptible to damage from prolonged high temperatures, polypropylene retains its structural integrity longer, making it preferable for applications requiring heat resistance, such as automotive parts or industrial textiles. However, acrylic offers superior color retention and softness, making it a favorite for apparel and home textiles where extreme heat isn’t a concern.

In summary, polypropylene outperforms acrylic in thermal degradation resistance, but the choice depends on the specific use case and desired fabric properties.