(Rigid-elastic olefinic material from the TPO family, modified with 30% talc powder to increase dimensional stability, rigidity, and thermal resistance while maintaining good flexibility)
🔹 What is TPO-TD30
TPO-TD30 (Thermoplastic Polyolefin) is a blend of polypropylene (PP) and olefinic elastomer (EPDM). The TD30 version contains approximately 30% fine talc dispersed in the matrix, offering a superior combination of mechanical strength and controlled flexibility. It withstands temperatures between -40 °C and +110 °C, has low water absorption, and excellent UV stability. It is a standard choice for fender liners, engine covers, and exterior protections in modern vehicles.
🔧 Composition
Component
Typical Proportion
Role
PP (polypropylene)
50–60 %
Rigid matrix
EPDM (rubber)
20–30 %
Elasticity and impact resistance
Talc (magnesium silicate)
30 %
Stiffening and thermal stability
Additives
< 5 %
UV protection and antioxidants
🚗 Automotive Applications
Component
Example parts
Observations
Wheel Arch Liners
Fender liners, splash shields
Rigid, thermally stable, damps vibrations
Bumpers & Lower Spoilers
Diffusers, engine caps
High impact and UV resistance
Under-engine Protections
Exterior panels, dust shields
Dimensional stability
Sensor Housings
Lower grilles, brackets
Matte uniform texture
🔩 Welding Compatibility
Mating Material
Compatibility
Observations
TPO, TEO, TPE-O, PP-EPDM
✅ Excellent
Same family – high bond strength
PP, PP-TD20, PP-EPDM-T30
✅ Good
Common olefin blend
PE-HD, PE-MD
⚠️ Limited
Requires lower temperatures
PA, PC, ABS, PVC
❌ Incompatible
Thermally and chemically incompatible
🏭 Manufacturers and Trade Names
LyondellBasell: Hostacom® TPO TD30
Borealis AG: Daplen® TD30
SABIC: PP-TPO Compounds
ExxonMobil Chemical: Santoprene™ TPO TD Series
🧠 How to Identify
Common Markings: >TPO-TD30<, >PP-EPDM-TD30<, >TPE-O-TD30<
Texture: Semi-rigid, matte, light grey or black
Weight: Slightly heavier than standard TPO (due to talc density)
Flame Test: Burns with a clean flame, faint polypropylene smell, white-grey ash
🛠️ TPO-TD30 Welding at ReplastMD
Method
Temperature
Observations
Hot Air
230 – 250 °C
Ideal – TPO / PP-EPDM-T30 rod
Heat plate (Mirror)
220 – 240 °C
Uniform, watertight bonding
Extrusion
230 – 250 °C
Recommended for high thicknesses
💡 ReplastMD Recommendation: use TPO or PP-EPDM-T30 welding rods, clean with isopropyl alcohol, and avoid overheating. Note that talc increases thermal conductivity, so ensure even heat distribution.
