primer and adhesive formulation. They provide effective barriers
to chemicals that can undermine the adhesive bond. The adhesive
also contains very powerful curatives that react with both the
polymers in the rubber and the polymers in the adhesive[14]. The
selection of the best adhesive to use in a particular bonding
situation depends on several factors [15]. They include: The
rubber being bonded, the molding process employed, level of
environmental resistance required, adaptability to existing adhe-sive application equipment and cost.
In the past years our research group investigated different
factors contributing to adhesion between rubber and textile
cords/fabrics [16–21]. In the present work, a newly prepared
adhesion promoter is used together with a well-known promoter
which is cobalt boron acylate[22–24]in order to judge the
performance of the newly prepared promoter on the adhesion
between NR mixes and brass plated steel cords. Aerobic aging and
exposure to ionizing radiation are also investigated for both
promoters using two different types of brass-plated steal cords.
We also utilized the method of Analysis of Variance, known as
ANOVA, to reach a statistical and mathematical understanding
regarding the different factors affecting rubber adhesion.