Effect of (3-aminopropyl) triethoxysilane on chemorheological behavior of carboxylated nitrile rubber in presence of surface oxidized ISAF carbon black

Abstract

Carboxylated nitrile rubber and ISAF carbon black chemically interacted when the mix of the two was extruded at high temperature (180ЊC) in a Monsanto Processibility Tester. Studies on the physical properties of the extrudates and the reaction kinetics of the extrusion process showed that the extent of interaction increased with increase in filler loading, oxygen-containing functional groups on the filler surface, shear rate, extrusion time, and the loading of (3-aminopropyl) triethoxysilane.

Covalent Grafting Approach for Improving the Dispersion of Carbon Black in Styrene–Butadiene Rubber Composites by Copolymerizing p-(2,2′-Diphenylethyl)styrene with a Thermally Decomposed Triphenylethane Pendant

“…Carbon black (CB)-based polymer composite material has been widely used in many fields because of its unique mechanical, electrical, optical, and thermal properties. − The disadvantage of this composite material is its inability to disperse in a polymer matrix, which lowers the properties of the CB composite material. − Conventionally, three principal approaches are used to improve the dispersion of CB in a polymer matrix: (i) the modification of CB, (ii) the addition of a compatibilizer, , and (iii) the functionalization of the polymer matrix. − The first two approaches generally require complicated multistep pretreatment and rigorous conditions, whereas the modification of the polymer matrix, which involves the introduction of epoxy, , carboxyl,amino, , and other functional groups directly into the polymer backbone to interact with the functional groups present on the CB surface, is more facile and flexible. However, most previous studies involving the modification of matrix rubber have been unable to improve the dispersion of furnace black and acetylene black because these CB types contain a few functional groups.…”