| NO. | Item | Standard regulations | Test result | Individual evaluation | ||
|
1 |
Appearance | It should be a fine, uniform paste without lumps Gel crusts and precipitates that are not easy to disperse quickly | Fine and uniform black paste, no agglomerated gel, crust and precipitates that are not easy to disperse quickly |
Qualified | ||
|
2 |
Sagging degree, mm | Vertical placement | ≤3
| 0 |
Qualified | |
| Horizontally | Not deformed | Not deformed | ||||
| 3 | Density/g/cm3 | Specified value ±0.1 | 0.92 | Measured value | ||
| 4 | Hardness/shore A | 15-50 | 19 | Qualified | ||
| 5 | Surface drying time/h | ≤2 | 0.1-0.3 | Qualified | ||
|
6 |
Tensile adhesion |
Standard condition | Tensile bonding strength/MPA | ≥0.20 | 0.28 | Qualified |
| Bonding failure area/% | ≤15 | 0 | Qualified | |||
|
After soaking | Tensile bonding strength/MPA | ≥0.20 | 0.22 | Qualified | ||
| Bonding failure area/% | ≤15 | 0 | Qualified | |||
| 7 | Extrude ability/(ml/min) | ≥110 | 560 | Qualified | ||