Health & Environmental Research Online (HERO)


Print Feedback Export to File
10988713 
Journal Article 
[Mixing, curing and reinforcement of NR/BR/EPDM blends for tyre sidewall applications] 
Zhang, HM; Datta, RN; Talma, AG; Noordermeer, JWM 
2010 
0 
Gummi, Fasern, Kunststoffe
ISSN: 0176-1625 
63 
8 
484-496 
German 
has translation 1731105 Mixing, curing and reinforcement of NR/BR/EPDM blends for tire sidewall applications
Tyre sidewalls generally consist of blends of natural rubber (NR) and butadiene rubber (BR), containing a high concentration of antiozonants to provide ozone resistance. However, the most widely used antiozonant, N-(l, 3-dimethylbutyl)-N'-phenyl-p-phe-nylenediamine (6PPD), is a staining, toxic and environmentally unfriendly substance. Incorporation of Ethylene-Propylene-Diene rubber (EPDM) into NR/BR is a way of achieving non-staining ozone resistance. But blending of dissimilar rubbers is severely restricted due to viscosity mismatch, thermodynamic incompatibility, cure incompatibility and heterogeneous filler distribution. This chapter gives an overview of the various research approaches in the field of blending dissimilar rubbers so far, as well as the mechanism of ozone protection by incorporation of EPDM in the tyre sidewall applications.