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Heat Resistant Conveyor Belt

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
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.

tems Model
Model (I) Model (II) Model (III) Model (IV)
Variation range
Hardness Difference after and beforeagingIRHD ±20 ±20
Maxmum after agingIRHD 85
Tensile strength Decrease of performance variance rate%≤ -25 -30 -40 -40
Maxmum after aging Mpa 12 10 5 5
Elongation at break Performance variance rate% -50 -55 -55
Maxmum after aging% 200 180 180

4.Adhesion of inter layer

Index Between fabric layers Between cover layer and belt core
Cover layer thickness 0.8-1.5mm Cover layer thickness1.5mm
Average of all test samples,N/mm,no less than 3.0 2.2 2.6
The lowest data of all test samples,N/mm,no less than 2.0 1.6 2.0