(Flexible-rigid olefinic material composed of Polypropylene (PP), EPDM synthetic rubber, and 20% talc powder (T20))
🔹 What is PP-EPDM-T20
PP-EPDM-T20 is an extremely common composition in the automotive industry, used for bumpers, corners, lower casings, diffusers, and exterior covers due to its moderate elasticity, impact resistance, and stability at high temperatures. It combines the structural rigidity of polypropylene with the elasticity and aging resistance of EPDM rubber, with talc acting as a reinforcing and dimensionally stabilizing agent. It is an optimal variant between PP-TD20 (rigid) and PP-EPDM-T10 (soft), maintaining excellent resistance to cracking, impact, and UV radiation.
🔧 Composition
Component
Typical Proportion
Role
Polypropylene (PP)
55–60 %
Rigid structural matrix
EPDM rubber
20–25 %
Elasticity, shock resistance
Talc (T20)
20 %
Stiffening, thermal and dimensional stability
Additives
< 5 %
Protection, matte finish, processability
🚗 Automotive Applications
Component
Example parts
Observations
Bumpers and Diffusers
Covers, sill extensions, corners
Semi-flexible, matte, UV resistant
Lower Shields and Panels
Engine guards, technical panels
Rigid-elastic, thermally stable
Wheel Arches
Fender liners, wing protectors
Good mechanical resistance
Large Exterior Parts
Grilles, side protections
Impact and temperature stable
🔩 Welding Compatibility
Mating Material
Compatibility
Observations
PP-EPDM, PP-TPO, TPO, TEO
✅ Excellent
Excellent welding – common family
PP-TD20, TX20, Plain PP
⚠️ Fair
Partially compatible (higher rigidity)
TPE-O, TPE-V
⚠️ Limited
Partially weldable
PA, PC, ABS, PET, PVC
❌ Incompatible
Chemically and thermally incompatible
🏭 Manufacturers and Trade Names
LyondellBasell: Hostacom® PP-EPDM-T20 / Softell® T Series
