The Effects of Mistron Vapor On Carbon Black Dispersion and Processing

This paper will look at how Mistron Vapor (talc) improves the dispersion of carbon black in rubber compounds 3 different ways

1).  It will look at the affect talc has on carbon black dispersion by increasing carbon black surface area while keeping the structure constant, and by increasing the carbon black structure while keeping the surface area constant.  Therefore we can see which property  influences carbon black dispersion, tensile, and tear die c properties when blended with talc -surface area or structure.

2).  It will also look to see if the addition of talc can improve blends of carbon blacks.  Many formulations blend carbon blacks to get the correct balance of properties which can lead to dispersion issues.  Normally one black will disperse better then the other.  This paper will look at a blend of tread or reinforcing carbon blacks, a blend of a carcass and tread blacks or reinforcing and semi-reinforcing blacks, and a blend of carcass blacks or semi-reinforcing blacks.  Thus far drastic improvements of Phillips Dispersion can bee seen from blends of these blacks with talc.

3).  It will also look to see if the addition of talc and carbon black in the same sequence of the mix can reduce cycle times and or simplify mixing specs.  This paper will review an EPDM mix with N550 and N774, CR with N774,  and a NR with N330 and N550.  We have seen a simplification of mixing parameters in EPDM, and an improvement of physical properties in the chloroprene,