Silicone rubber material for swimming class equipment with ZINCA 351-20, 30, 40, 856-20, 221-20
Silicone rubber material for swimming class equipment with 351-20, 30, 40, 856-20, 221-20
Details
Silicone rubber material for swimming class equipment with 351-20, 30, 40, 856-20, 221-20
Item | 351-20 | 351-30 | 351-40 | 856-20 | 221-20 |
Product | Swimming cap, head strap |
Products Feature | Good resilience and tensile properties, feel comfortable. |
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Appearance | Semitransparent |
Hardness(HA) | 18 | 30 | 39 | 19 | 18 |
Density（g/cm³） | 1.11 | 1.11 | 1.12 | 1.07 | 1.06 |
Tensile strength （Mpa） | 5.5 | 8.0 | 7.5 | 5.0 | 4.5 |
Elongation (%) | 650 | 700 | 500 | 900 | 900 |
Tear strength (N/mm) | 15.0 | 24.0 | 24.0 | 12.0 | 12.0 |
Linear shrinkage(%) | 3.4 | 3.4 | 3.3 | 3.5 | 3.6 |
Vulcanizing agent | 2,5-bis[tert-butylperoxy-2,5-dimethylhexane |
Notes:
- Items containing "*" represent the secondary vulcanization data; others represent first vulcanization data; “Y” for the liquid glue.
- Hardness containing “C” represent ASKER C Others represent Shore A.
- Tear mark: A cut mouth with crescent type cutter testing; C - domestic orthogonal cutting test; Not marked for JISK type B.
