Cabot Corporation

About: Cabot Corporation is a company organization based out in Boston, Massachusetts, United States. It is known for research contribution in the topics: Carbon black & Carbon. The organization has 1279 authors who have published 1399 publications receiving 36736 citations.

Rheology of dispersant-free aqueous slurries of carbon black

Abstract: The rheological characteristics of dispersant-free aqueous slurries of carbon blacks have been studied over a range of concentrations of 4 to 18%. Single pass measurements were carried out with a falling plunger viscometer in order to determine as nearly as possible, the properties of the undisturbed slurries. The slurries exhibit plastic or pseudoplastic flow behavior but are extremely sensitive to conditions of preparation. Slurries can be thickened by the application of high shear and thinned by the application of low shear. These changes are not spontaneously reversible on standing. The rheology of slurries of different carbon blacks depends on their particle size, “structure”, and surface chemistry. These results are interpreted in terms of a model involving small anisometric aggregates which can associate to form either a network or else a system of large, spherical flocs.

Phosphoric acid treatment of carbonaceous material prior to activation

Abstract: A method of producing an activated carbon, comprising selecting a raw material for direct-activation, applying a solution of at least 50% phosphoric acid by weight at a ratio of from 0.01 pounds to 0.3 pounds of phosphoric acid solution per pound to the raw material selected for direct activation to produce a phosphoric acid treated raw material, and direct-activating the phosphoric acid treated raw material via a gas activation process to produce an activated carbon.

Carbon Black for Electrically Conductive Plastics

Abstract: The intrinsic semiconductive nature of furnace-type carbon blacks [1] has re- sulted in their use as additives which render normally resistive polymers elec- trically conductive. Various grades of conductive carbon black are produced to provide optimum cost/performance balances in a wide range of conductive applications.

Comparison of Several Accelerated Laboratory Tests for the Determination of Localized Corrosion Resistance of High-Performance Alloys

Abstract: Results of immersion pitting, immersion crevice, and slow scan potentiodynamic pitting tests are compared to assess the relevance of particular types of accelerated laboratory tests for lo...

Centrifugal casting method

Abstract: A method of centrifugally casting hollow metal objects is provided in which molten self-disintegrating slag is added to the rotating mold immediately after casting molten metal and transform in the solid state giving a volume change which causes the slag to disintegrate therein.