Reactions of Polymers in Bulk. IV. Influence of Structure and Agglomeration of Carbon Black Particles on Deformation Behavior

1962 ◽  
Vol 35 (3) ◽  
pp. 590-598
Author(s):  
J. Janacek
Keyword(s):  
Carbon Black ◽  
Specific Surface ◽  
Deformation Behavior ◽  
Polymer System ◽  
Filled Rubber

Abstract The deformation behavior of filled rubber vulcanizates depends on the degree of linkage of the carbon black particles and on their tendency for agglomeration. The significance of these factors is discussed with consideration of the specific surface of the particles, their concentration, the degree of crosslinking, the magnitude of the deformation and the character of the polymer system.

Reactions of Polymers in Bulk. III. Influence of Specific Surface and of Filler Concentration on Deformation Behavior

1962 ◽  
Vol 35 (3) ◽  
pp. 581-589
Author(s):  
J. Janacek
Keyword(s):  
Carbon Black ◽  
Specific Surface ◽  
Deformation Behavior ◽  
Volume Concentration ◽  
Chemical Activity ◽  
Filler Concentration ◽  
Shore Hardness ◽  
Carbon Blacks

Abstract The deformation behavior of carbon black-filled vulcanizates depends—after elimination of the influence of the differences in chemical activity of the carbon black—on the product of the specific surface P of the carbon black and the nth power of its volume concentration c; for the correlation of the modulus M100, the Shore hardness, and the rebound elasticity the value n=2 was found. This statement holds true for carbon blacks of similar structure levels and of small enough specific surface that one can assume that it will not agglomerate to an appreciable extent.

scholarly journals Evaluation of Deformation Behavior of Carbon-Black-Filled Rubber Under Cyclic Straining

2005 ◽  
Vol 71 (708) ◽  
pp. 1109-1115 ◽  
Author(s):  
Yasuhiro FURUTANI ◽  
Masato NAITO ◽  
Wei LU ◽  
Yoshihiro TOMITA
Keyword(s):  
Carbon Black ◽  
Deformation Behavior ◽  
Filled Rubber ◽  
Cyclic Straining

scholarly journals Influence of Carbon Black Structure and Specific Surface Area on the Mechanical and Dielectric Properties of Filled Rubber Composites

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
Omar A. Al-Hartomy ◽  
Falleh Al-Solamy ◽  
Ahmed Al-Ghamdi ◽  
Nikolay Dishovsky ◽  
Milcho Ivanov ◽  
...  
Keyword(s):  
Thermal Analysis ◽  
Carbon Black ◽  
Specific Surface ◽  
Surface Area ◽  
Specific Surface Area ◽  
Filler Content ◽  
High Specific Surface Area ◽  
Filled Rubber ◽  
Dielectric Thermal Analysis ◽  
The Difference

Natural rubber based composites have been prepared using various amounts of two fillers: conventional Corax N220 carbon black or electrically conductive carbon black Printex XE-2B which has a very high specific surface area. The composites have been studied by dynamic mechanical thermal analysis, dielectric thermal analysis and SEM. It has been established that all vulcanizates investigated are in the glass state in the−80∘C to−40∘C interval. The storage modulus increases with the increasing filler content in the−40∘C to +80∘C interval when the vulcanizates are in the highly elastic state. DETA shows that the increase in filler content leads to an increase in the dielectric permittivity (ε′).ε′also increases with temperature increasing. Higher frequency causes a decrease ofε′values which becomes more pronounced with the increasing filler content. Obviously, when the content of Printex XE-2B carbon black in the vulcanizates is higher than 7.5 phr, the percolation threshold is reached and theε′values increase up to 102–104. Theε′values for the vulcanizates comprising 20 and 50 phr Corax N220 carbon black are measurable with those for the vulcanizates comprising 5 and 10 phr Printex XE-2B carbon black respectively. The results obtained could be explained by the difference in the structure and specific surface area of the two types of carbon black—Printex XE-2B and Corax N220.

Sign in / Sign up

Export Citation Format

Share Document