https://www.avient.com/sites/default/files/2023-05/LFT Application Development Center Bulletin.pdf
This includes physical testing, rheological behavior, thermal and moisture examination, microscopy, flammability testing, and weathering/UV exposure (QUV and Xenon Arc). • Fiber reinforcement percentage (ranging from 20–70% fiber content, by weight) • Additive technologies (color, UV enhancement, flame retardancy, heat stabilization, etc.)