PVC sealing strips for high-grade glass curtain wall
Over the years, PVC has been widely used in glass curtain walls due to its good properties and low cost. However, its heat aging resistance is poor compared with other rubber and thermoplastics. In our company, by adjusting the formulation, not only the heat aging resistance of PVC has been improved, but also hard-soft combined PVC sealing strips can be made according to the construct of glass curtain wall.
No. |
Test item |
Test Method |
Test condition |
Test result |
Requirment |
Conclusion |
1 | Tensile strength |
ASTM D412-98a(2002) Method A |
Specimen: Die C Speed: 500mm/min |
11.2Mpa | Min 11.0 Mpa |
Pass |
2 | Elonggation |
337% |
Min 250% |
Pass | ||
3 | Tensile strength at 100% elongation |
2.4Mpa |
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4 | Heating aging | ASTM C864-99 | Temperature: 100 Time:70 Hours |
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5 | Change in tensile strenght after heating aging |
ASTM D412-98a(2002) Method A |
Specimen: Die C Speed: 500mm/min |
-2.4% |
Max 15% |
Pass |
6 | Change in elongation after heating aging |
-2.4% |
Max 40% |
Pass | ||
7 |
Hardness |
ASTM D2240-05 | Thickness: 17.99 mm Type A |
63 |
60+_5 |
Pass |
8 |
Density | ASTM D792-00 Method B | Absolute ALCOHOL,23.0 |
1.396g/cm3 |
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