| 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 | ≤3
| 0 | Qualified | |
| 3 | Tack-free time, h | ≤3
| 2 | Qualified | |
| 4 | Extrude ability, s | ≥150 | 344 | Qualified | |
| 5 | Density (g/cm) | Specified value ±0.1 | 1.45 |
| |
|
6 |
Tensile modulus/mpa | 20℃
| ＞4
| 0.6 | Qualified |
| -20℃
| Or> 0.6 | 0.7 | Qualified | ||
| 7 | Fixed-stretch cohesiveness | No damage | No damage/60% | Qualified | |
| 8 | Fixed elongation adhesion after immersion in water | No damage | No damage/60% | Qualified | |
| 9 | Adhesion after cold drawing-hot pressing | No damage | No damage | Qualified | |
| 10 | Adhesion after UV radiation | No damage | No damage/60% | Qualified | |
| 11 | Quality loss rate% | ≤8%
| 5.8 | Qualified | |
