Morphology carbon blacks

Carbon Black Morphology Effects on Abrasion Resistance.945... 

The effects of carbon black morphology on dispersibility described above have been borne out by practical experience. Higher surface area and lower-structure blacks are known to be more difficult to disperse. Traditionally, carbon blacks with surface areas higher than 160 m /g and CDBP lower than 60 mL/100 g cannot be sufficiently well dispersed using normal dry-mixing equipment, so they are not considered rubber grades. Figure 33.4 shows the ASTM carbon black spectrum used in the mbber industry, expressed by compressed DBPA versus surface area. 

The degree of dispersion in a plastic system is of equal importance to a carbon black s physical properties in terms of color quality and other end-use properties. Dispersion, like color, is strongly influenced by carbon black morphology. Selecting... 

The Role of Carbon Black Morphology In Reducing UV Oxidation of Linear Low Density Polyethylene Films, Cabot Technical Report S-115,1997. 

M. C. Yu, J. Menashi, and D. J. Kaul, Carbon-Black Morphology Its Effect on Viscosity and Performance, Plastics Compounding, November/December, 1994. 

Table 9. Effect of Carbon Black Morphologies on the Properties of Filled Compounds...

Figure 239. Silhouettes of particles of carbon black morphologies (a) spherical and individual, (b) agglomerated into approximately spherical shapes, (c) agglomerated linearly and (d) agglomerated into linear but branched systems (Taylor, 1997).

Method B This method differs from Method A in that it is the number of particles of a particular size that is determined and not the weight percent retained on a specific screen. The size of the particles is assessed using optical microscopy and an experimental approach that is based on Test Method ASTM D-3 849 (Test Method for Carbon Black - Morphological Characterisation of Carbon Black using Electron Microscopy). 

X. Bourrat, A. Oberlin, H. Van Damme, C. Gateau, R. Bachelar. Mass fractal analysis of conducting carbon black morphology. Carbon, 26 (1), 100-103,1988. 

K.A. Burgess, C.E. Scott, W.M. Hess. Vulcanizate performance as a function of carbon black morphology. Rubb. Chem. TechnoL, 44, 230-248,1971. 

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