New PS modified Epoxy-based Nanoclay and Hybrid Composites: Mechanical, Thermal, and Flammability Properties
Year: 2022
Type: preprint
Abstract: In the first stage of this study, the epoxy resin-hardener system, which was used in modification with thermoplastic polystyrene (PS) waste, was determined. For this purpose, different epoxy resins: bisphenol-A type (ER) and phenolic novolac (EPN) epoxy resins and modified cycloaliphatic amine type different curing agents were tried, and the EPN-IPOX system was found suitable. The curing degrees of the neat ER, EPN, and modified EPN (EPN-PS) resins calculated from the FTIR spectra were found as 99.3%, 99.9%, and 86.5%, respectively. The increase in the degree of curing increased the density values. Pristine (NC) and chemically modified (MNC) montmorillonite nanoclays were used in the preparation of nano- and hybrid composites. Chemical modification was accomplished by treating NC particles with tetramethylammonium chloride (TMAC). Chemical structures of nanoclays were elucidated by FTIR. The appropriate ratio of PS and NC was accepted as 4% and 2% by weight, respectively. Hybrid composites were produced at a fixed NC or MNC ratio of 2% by weight, with red mud waste (RMW) released during the production of alumina from bauxite. The surface morphology of nano- and hybrid composites was characterized by Scanning electron microscopy (SEM) and X-ray diffraction (XRD). A comparative study of the influence of 1–4 wt% pristine NC, and two-types binary systems; (a) 2 wt% NC-(15–35) wt% RMW; and (b) 2 wt% MNC-(15–35) wt% RMW on the mechanical, dynamic mechanical, and thermal properties of modified epoxy resin (EPN-PS) was investigated. Combustion of the EPN-PS matrix decreased with adding NC/MNC and RMW.
Source: Research Square
Institutions: Selçuk University, Konya Technical University
Language: English
Subfield: Polymers and Plastics
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W4281607101