A Study on the Structure and Adhesive Properties of Epoxy-Silicate Composites

Abstract

Compositions based on an ED-20 resin with three types of modifiers: natural montmorillonite (MMT)Cloisite Na + , organomodified MMT Cloisite 30B, and halloysite, were investigated. An optimum regime was chosen for preparation of the epoxy/modifier systems by employing the ultrasonic mixing. The rheological characteristics of suspensions were used to estimate the distribution of modifier in the epoxy oligomer. According to rheological data, the best dispersion of MMT in the epoxy oligomer after ultrasonic stirring was observed for the organomodified MMT Cloisite 30B. The maximum shear adhesion strength was also observed for the epoxy resin+Cloisite 30B systems. For the systems with 2 wt. % of Cloisite 30B, the increase in the adhesion strength was up to 65% as compared with that of the pristine epoxy oligomer.

The Role of Dispersion Technique and Type of Clay on the Mechanical Properties of Clay/Epoxy Composites

“…The addition of both MMT and HNT improved the mechanical properties, however, MMT‐containing nanocomposites showed better results for moduli and water barrier properties while HNT promoted an enhancement on elongation at break. Brantseva et al have studied epoxy/clay composites with natural MMT, an organically modified MMT and halloysite nanotubes. They have found that the best dispersion was obtained for the organically modified clay.…”

Physico-mechanical, thermal, and coating properties of composite materials prepared with epoxy resin/steel slag

“…Epoxy resins are among the important thermoset polymers with their mechanical, thermal, and chemical properties . They have been widely investigated in the scientific area and various industries because of high mechanical strength, low shrinkage, outstanding resistance to corrosion and chemicals, good adhesion performance, and electrical properties . In spite of the known benefits of epoxy resins, they are brittle and flammable materials , so suitable fillers including clay, organic, and inorganic materials like fly ash, copper slag, and so forth are used to overcome these deficiencies.…”