1.Technical indexes
Ltems | Type | |||
MOL 1 | MOL 2 | MOL 3 | ||
Change Range Allowed | ||||
Hardness | Difference before and after aging(1RHD) |
20 | 20 | |
Maximum value after aging(1RHD) |
85 | |||
Hardness | Change rate after aging% | 25 | 30 | 30 |
Maximum value after aging/Mpa |
12 | 10 | 5 | |
Elongation at break | Change rate after aging% | 50 | 55 | |
Maximum value after aging% | 200 | 180 |
2.Adhesion Cover to Ply
Ltem | Between plies(N/mm) | Between rubber and carcass(N/mm) | |
Rubber cover thick ≦1.5mm |
Rubber cover thick >1.5mm |
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Average Value of Longitudinal test piece | 3.0 | 2.2 | 2.6 |
Smallest Pernitted Maximum of Longitudinal test piece | 2.0 | 1.6 | 2.0 |
3.The physical performance of cover rubber after heat-proof test comform to the specification in the table.
4.Adhesion of inter layer
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