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| Krynac NV866/20 |
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| a fluxed blend of medium ACN NBR rubber and PVC resin and DOP |
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a fluxed blend of medium ACN NBR rubber and PVC resin and DOP in which the composition (NBR : PVC : DOP) by wt % is 35 : 21 : 42
non-staining antioxidant/stabilizer system
Supply Form slabs |
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Mooney viscosity, ML (1+4) 100 °C (unmassed) 20 ± 7 ASTM D 1646
Hardness, Durometer A 32 ± 5 ASTM D 2240 (1, 2)
Tensile strength min. 1.35 MPa ASTM D 412 (1, 2)
Ultimate elongation min. 250 % ASTM D 412 (1, 2)
NBR base polymer:
Bound nitrile 32.7 wt % Bayer Inc.
Volatile matter max. 0.5 wt % Bayer Inc.
Total ash max. 1.0 wt % ASTM D 5667
NBR/PVC blend:
Specific gravity 1.04 ASTM D 1638
Bound nitrile 12.0 wt % Bayer Inc.
(1) Test formulation, mill compound:
Krynac NV866/20 100 (parts by mass)
Spider sulfur 2.5
NBS zinc oxide 5
NBS stearic acid 1
MBT 1.5
(2) Cured 10 min at 160 °C |
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