Determination of Carbon Black Type in Filled Rubber Vulcanizates

1967 ◽  
Vol 40 (5) ◽  
pp. 1323-1329 ◽  
Author(s):  
Lester G. Nabors ◽  
Merton L. Studebaker
Keyword(s):  
Particle Size ◽  
Carbon Black ◽  
Filled Rubber ◽  
Vacuum Pyrolysis ◽  
Acid Washing ◽  
Analogous Data ◽  
Particle Size And Structure ◽  
Qualitative Analyses ◽  
Size And Structure

Abstract A system of analysis has been described which permits determining the type of rubber grade carbon black in a vulcanizate. The carbon black is removed from the vulcanizate by vacuum pyrolysis at 850° C and its reflectance after acid washing and compression at 15,000 psi and apparent specific volume at 703 psi are determined. These measurements permit estimation of particle size and “structure.” Supplementary analyses are required for channel blacks. The procedure is most precise when the analytical values are compared with analogous data obtained from carbon blacks of known properties when removed by the same procedure from similar vulcanizates. As in all qualitative analyses, the more information which is available to the analyst, the more reliably he is able to interpret his results.

Spin echo NMR of cobalt zeolite catalysts. Control of particle size and structure

1988 ◽  
Vol 110 (16) ◽  
pp. 5569-5571 ◽  
Author(s):  
Zongchao. Zhang ◽  
Steven L. Suib ◽  
Y. D. Zhang ◽  
W. A. Hines ◽  
J. I. Budnick
Keyword(s):  
Particle Size ◽  
Spin Echo ◽  
Zeolite Catalysts ◽  
Particle Size And Structure ◽  
Size And Structure

Controlling Particle Size and Structure of Starch Xanthide in Elastomer Masterbatches

1976 ◽  
Vol 8 (1) ◽  
pp. 82-95 ◽  
Author(s):  
R.A. Buchanan ◽  
H.L. Seckinger ◽  
W.F. Kwolek ◽  
W.M. Doane ◽  
C.R. Russell
Keyword(s):  
Particle Size ◽  
Particle Size And Structure ◽  
Size And Structure

Effects of particle size and structure of carbon blacks on the abrasion of filled elastomer compounds

2007 ◽  
Vol 42 (20) ◽  
pp. 8391-8399 ◽  
Author(s):  
Chang Kook Hong ◽  
Hyunsung Kim ◽  
Changseok Ryu ◽  
Changwoon Nah ◽  
Yang-il Huh ◽  
...  
Keyword(s):  
Particle Size ◽  
Carbon Blacks ◽  
Filled Elastomer ◽  
Particle Size And Structure ◽  
Size And Structure

Thermal Conductivity of Elastomer Vulcanizates by Differential Scanning Calorimetry

1982 ◽  
Vol 55 (1) ◽  
pp. 191-207 ◽  
Author(s):  
Anil K. Sircar ◽  
John L. Wells
Keyword(s):  
Thermal Conductivity ◽  
Particle Size ◽  
Carbon Black ◽  
Polymeric Materials ◽  
High Concentration ◽  
Scanning Calorimetry ◽  
Relationship Of ◽  
Particle Size And Structure ◽  
Thermal Conductivity Λ ◽  
Very High

Abstract A du Pont 990 differential scanning calorimeter was modified to measure thermal conductivity of elastomer vulcanizates. The method is quick and reproducible and is recommended for scouting research of polymeric materials. The thermal conductivity λ values obtained by this method of some known materials compare favorably with those in the literature. Carbon black increases λ values in all elastomers. Particle size and structure of carbon black seem to affect λ values erratically, although the trend is towards higher λ values with larger particle size and higher structure. A linear relationship of λ vs. volume concentration of carbon blacks and other fillers is observed, except at a very high concentration. The extrapolated values of λ for a filler differ in different elastomeric media. Noncompatible elastomer blends increase or decrease λ values according to the nature and proportion of elastomers. The effect of the manner of addition of carbon black does not seem to affect the λ value of compatible blends. Higher temperatures decrease λ values for all the vulcanizates studied.

Determination of Carbon Black Particle Size by Reflectance

1967 ◽  
Vol 40 (5) ◽  
pp. 1319-1322 ◽  
Author(s):  
Merton L. Studebaker ◽  
Lester G. Nabors
Keyword(s):  
Particle Size ◽  
Carbon Black ◽  
Sample Preparation ◽  
Simple Technique ◽  
Carbon Black Particle ◽  
Carbon Black Surface ◽  
Reflectance Meter ◽  
Black Surface ◽  
Black Particle

Abstract A simple technique of sample preparation using dry carbon black samples has been developed which gives a carbon black surface of reasonably reproducible reflectance, using a commercially available and reasonably priced reflectance meter. The reflectance values were calibrated against particle size determined by Kraus and Rollmann using the calorimetric procedure of Harkins and Jura.

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