TDI-2135 — hot PTMEG prepolymer, 85 Shore A (softest, high rebound)
Prepolymer based on **PTMEG with TDI** end groups. Hardness when cured with MOCA — 85 A. The softest in the Hot System line, with the highest rebound (61%) and the highest tensile strength (87 MPa) — for dynamic, impact loads.
Component characteristics
| Parameter | Value |
|---|---|
| NCO% | 3.5 ± 0.1 |
| Appearance (room temp.) | white liquid |
| Processing temperature | 85 ℃ |
| Processing viscosity | 1200 cps |
| Specific gravity | 1.07 |
Physical-mechanical properties
| Parameter | Value |
|---|---|
| Hardness, Shore A | 85 ± 2 |
| 100% modulus | 5.4 MPa |
| 300% modulus | 9.6 MPa |
| Tensile strength | 87 MPa |
| Elongation at break | 550 % |
| Tear (without notch) | 65 kN/m |
| Tear (with notch) | 21 kN/m |
| Rebound | 61 % |
| Abrasion | 39 mm³ |
Mixing and curing (hot casting)
| Parameter | Value |
|---|---|
| Ratio | TDI-2135 100 : MOCA 10 |
| Mixing temp. (prepolymer/MOCA) | 85 / 120 ℃ |
| Mold temperature | 95 ℃ |
| Pot life | 9 min |
| Gel time | 11 min @ 85℃ |
| Curing | 10 h @ 100 ℃ |
Applications
Rods, rollers, gaskets, sheets, industrial rollers, screens for mineral extraction, seals — mining, quarrying, oil and gas. Optimal where elasticity, rebound and resistance to impact/dynamic loads matter.
Packaging · storage
20 kg / 200 kg steel drums · 12 months · cool/dry, under nitrogen.
In the line
Softest: TDI-2135 85A → TDI-3140 (89A) 89A → TDI-2162 (95A) 95A. Category Hot System. Has the longest pot life (9 min) and the softest mold regime (95 ℃).
FAQ
Q: What is the hardness of TDI-2135? A: 85 Shore A — the softest in the line. Q: How is it better than the others? A: Highest rebound (61%) and highest tensile strength (87 MPa) — for dynamics/impact. Q: Longest pot life? A: Yes, 9 min — more convenient for large pours. Q: Base? A: PTMEG prepolymer + TDI, MOCA curative (100:10).
category: Hot System · terms: Reference