Appearance: Polyester fibers are long with a rough fabric surface; polypropylene fibers are short with a smooth surface.
Tensile Strength: Polyester ranges from 600–900 N/50mm-significantly higher than polypropylene's 300–500 N/50mm-offering superior tear and puncture resistance.
Heat Resistance: Polyester has a high melting point and remains stable at 120°C, whereas polypropylene deforms at around 80°C.
Bonding: Polyester's long fibers interlock deeply with cement, preventing hollow spots on vertical surfaces; polypropylene's smooth surface makes it prone to delamination when applied to walls.
Classification: Polypropylene is classified by weight (gsm), while polyester is classified by thickness.
Material Selection Advice: Choose polyester for major projects; use polypropylene for small-scale home renovations with limited budgets.
