|
Model |
D4336 |
D4142 |
D4152 |
D4160 |
|
NCO/% |
3.6±0.2 |
4.2±0.2 |
5.2±0.2 |
6.0±0.2 |
| State at 20 ℃ |
Light yellow solid |
|||
| MOCA100g Prepolymer /g |
10.5 |
12 |
14.9 |
17.5 |
| Mixing temperature /℃（ Prepolymer /MOCA） |
80/120 |
80/120 |
80/120 |
80/120 |
| Gel time /min |
8 |
8 |
7.5 |
4 |
| Post vulcanization time (100℃) /h |
16 |
16 |
16 |
16 |
| Hardness（Shore A） |
80±2 |
88±2 |
92±2 |
94±2 |
| 100% Modulus/MPa |
3.3 |
5.4 |
7.3 |
10.5 |
| 300% Modulus /MPa |
6.1 |
10.6 |
15.6 |
18.7 |
| Tensile strength /MPa |
45 |
45 |
50 |
52 |
| Elongation / % |
550 |
520 |
480 |
450 |
| Tear strength /（KN/m） |
51 |
76 |
99 |
110 |