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   IndiaRubberDirectory.com > Rubber Engineering > Standard Rubber Formulations

Standard Rubber Formulations - CONVEYOR BELTING-COVER

CONVEYOR BELTING-COVER (IS : 1891 (PART 1) 1978)

     M24 Grade

A B
Natural Rubber, RMA4            100.0 100.0
Accimel 0.15 0.15
Zinc Oxide       3.0 3.0
Stearic Acid     1.5 1.5
HAF (N 330) Black     40.0 40.0
Aromatic oil      5.0 5.00
Paraffin Wax    0.7 0.7
Accinox BL 1.5 1.5
Accinox HFN 1.5 --
Accinox ZC      -- 1.0
Accicure HBS 0.8 0.8
Accitard A 0.2 0.2
Sulphur 2.3 2.3

Transmission belt compound with 2.5 phr of sulphur can be used in carcass with cotton duck.

Press cure : 20 minutes at 150°C

CONVEYOR BELTING-COVER

(IS : 1891 (PART 1) 1978)(Contd.) 

                                                            M24 Grade

                                                                        A                              B

Expected physical properties:                                              

Tensile strength, Kg/cm²                                         260

Modulus at 300% el, (kg/cm²)                                  95

Elongation at break, (%)                                         500

Hardness (IRHD)                                                     60

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