Three-component MDI Polyester Prepolymers
Index | Shore Hardness | |||||||
60A | 65A | 70A | 75A | 80A | 85A | 90A | 95A | |
31165-B (g) | 100 | 100 | 100 | 100 | 100 | 100 | 100 | 100 |
31165-A (g) | 195.7 | 168.8 | 137.9 | 113.4 | 102.9 | 84.8 | 63 | 51.1 |
31165-C (g) | 8.7 | 9.8 | 11.1 | 12.2 | 12.6 | 13.4 | 14.4 | 14.9 |
Catalyst (‰) | 2-5 | |||||||
31165-A Temp (℃) | 65-70 | |||||||
31165-B Temp (℃) | 40-45 | |||||||
31165-C Temp (℃) | 40-45 | |||||||
Mold Temp (°C) | 110-120 | |||||||
After Cure (h/100°C) | According to the size of product | |||||||
Pot Life (min) | 7-10 | 7-10 | 7-10 | 5-7 | 5-7 | 3-5 | 3-5 | 3-5 |
Demold Time (min) | 40 | 40 | 40 | 40 | 40 | 40 | 40 | 40 |
Tensile Strength (MPa) | 35-37 | 36-38 | 36-38 | 38-40 | 38-43 | 42-47 | 43-48 | 47-50 |
100% Modulus (MPa) | 1-2 | 2-3 | 2-3 | 2-4 | 3-5 | 5-7 | 6-8 | 8-10 |
300% Modulus (MPa) | 2-4 | 5-8 | 7-9 | 9-12 | 11-14 | 13-16 | 14-17 | 17-20 |
Ultimate Elongation (%) | 551-654 | 532-637 | 522-625 | 522-623 | 481-582 | 432-535 | 422-525 | 425-527 |
Tear Strength (without Nick) (KN/m) | 36-44 | 42-54 | 52-63 | 65-78 | 72-87 | 86-98 | 92-104 | 104-120 |
Resilience (%) | 50-51 | 47-50 | 45-47 | 44-46 | 42-44 | 40-42 | 38-40 | 36-38 |
DIN Abrasion (mm³) | ≤35 | ≤38 | ≤40 | ≤40 | ≤40 | ≤50 | ≤52 | ≤52 |