Effect of a natural magnesium silicate treated with a new coupling agent on the properties of ethylene–propylene–diene rubber compounds

Abstract

ABSTRACT:The behavior of sepiolite (magnesium silicate with a microfibrillar morphology) as a filler in ethylenepropylene-diene compounds was studied. A new coupling agent, meta-isopropenyl dimethyl benzyl isocyanate, was used. The effect of the filler modified by meta-isopropenyl dimethyl benzyl isocyanate on the physical properties was improved with respect to other fillers and commercial silane coupling agents under the same conditions. In addition to a smoother surface, the flow behavior of compounds filled with sepiolite, on account of its fibrous morphology, was better than that obtained with other fillers.

Effect of Different Silane Coupling Agents In-Situ Modified Sepiolite on the Structure and Properties of Natural Rubber Composites Prepared by Latex Compounding Method

“…Previous research [ 32 , 36 , 37 ] has primarily focused on melt mixing, and there is limited information on in situ modification of sepiolite for latex compounding. In this study, we selected three silane coupling agents with different functional groups (see Table 1 ) to modify sepiolite.…”

Synthesis of nanoscaled poly(styrene-co-n-butyl acrylate)/silica particles with dumbbell- and snowman-like morphologies by emulsion polymerization

“…Basically they can be divided in two groups based on either the enhancement of physical adsorption of organic molecules on the silica surface, or on the creation of chemical linkages between polymer chains and the silica surface via coupling agent molecules. [9][10][11] In this context, the synthesis of polymer-silica particles with core-shell, hairy-, multipod-or dumbbell-like morphologies is a step forward in the compatibilization of highly polar silica surfaces and nonpolar polymers. [12][13][14] Moreover, synthesis of these particles in smaller sizes offers various advantages due to the increased specic surface area.…”

Effect of low‐load reinforcing nanofillers on rheological behavior and physical properties of ionic elastomers based on XNBR and MgO

“…This improvement in the processing behavior is due to the orientation of the fibrilar particles of the silsep in the flow direction. 21 Table IV shows the values obtained for the physical properties of the compounds. As it was expected, the presence of the filler produces an increase in Shore A hardness and in the stress values at low Figure 2 Variation of apparent viscosity with shear rate on capillary flow.…”