Number | Test items | Standard Ordain | Test results | |
1 | Appearance | Smooth, uniform paste, without bubbles, skinning or gels. | Smooth, uniform paste, without bubbles, skinning or gels. | |
2 | Density, g/cm³ | Specified value±0.1 (1.02±0.1) |
1.03 | |
3 | Sag degree, mm | Vertical | ≤3 | 0 |
4 | Tack-free time, h | ≤3 | 0.7 | |
5 | Extrudability, ml/min | ≥150 | 846 | |
6 | Elastic recovery rate,% | ≥80 | 95 | |
7 | tensile modulus | 23℃ | ≤0.4 | 0.3 |
-20℃ | ≤0.6 | 0.3 | ||
8 | Adhesion property at maintained extension | No destruction | No destruction | |
9 | Adhesion property at maintained extension after water immersion | No destruction | No destruction | |
10 | Tensile properties at maintained extension after cold drawn and hot press | No destruction | No destruction | |
11 | Adhesion property at maintained extension after exposure to UV light | No destruction | No destruction | |
12 | Loss of mass, % | ≤8 | 4 |