No. | Items | Standard | Test Result | Evaluation | |
1 | Appearance | Fine, even paste There should be no bubbles, crusts or gels | Fine, even paste There should be no bubbles, crusts or gels | Yes | |
2 | Density, g/cm3 | E. + / - 0.1 | 1.5 | / | |
3 | Sagging degree, mm | vertical | ≤3 | 0 | Yes |
4 | surface drying time, h | ≤3 | 0.4 | Yes | |
5 | Extrudability, mL/min | ≥150 | 561 | Yes | |
6 | Elastic recovery, % | ≥80 | 81 | Yes | |
7 | tensile modulus | 23℃ | >0.4 or >0.6 | 1.1 | Yes |
-20℃ | / | ||||
8 | Fixed extension cohesiveness | no damage | no damage | Yes | |
9 | Fixed extension adhesion after immersion | no damage | no damage | Yes | |
10 | Adhesiveness after cold drawing and hot pressing | no damage | no damage | Yes | |
11 | Adhesiveness after ultraviolet irradiation | no damage | no damage | Yes | |
12 | Mass loss rate, % | ≤8 | 5.1 | Yes |