Related Experiment Video
Updated: Jan 26, 2026

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites
Published on: September 19, 2020
Functionalized Montmorillonite Intercalation Iron Compounds for Improving Flame Retardancy of Epoxy Resin
Qinghong Kong1, Yi Zhang1, Xin Zhang1
1School of the Environment and Safety Engineering, Jiangsu University, Zhenjiang, Jiangsu, 212013, China.
Abstract:
To endow montmorillonite with excellent flame retardancy, montmorillonite (Mt) intercalation iron compounds (Fe-Mt) were synthesized and modified by phosphorylated chitosan (PCTS) to prepare PCTS modified Fe-Mt (PCTS-Fe-OMt). PCTS-Fe-OMt was further incorporated into epoxy resin (EP) for improving the fire safety of EP. The results revealed that the interlayer spacing of Fe-Mt was expanded by PCTS, which resulted in well dispersion of PCTS-Fe-OMt in EP matrix. The TGA results showed that EP/PCTS-Fe-OMt nanocomposites exhibited much higher residues due to the excellent charring performance of PCTS-Fe-OMt. According to the cone calorimeter tests, the addition of 5 wt% PCTS-Fe-OMt made peak heat release rate, total heat release, peak smoke production rate, total smoke production values of EP observably decrease by 40.2%, 17.1%, 33.9% and 19.0%. Based on the above results, the improved flame retardancy and smoke suppression properties of EP/PCTS-Fe-OMt nanocomposites were attributed to the combination of iron compounds and phosphorylated chitosan on catalytic charring, thereby promoting the formation of swollen, continuous and compact char layers on the surface of polymer during combustion, eventually restraining the decomposition of polymers.
Related Concept Videos
Retarders
The function of retarders is to delay the setting of concrete, and this effect can be measured using a penetration test. The retardation process involves adding...
Compounds Essential to Human Function
Inorganic Compounds Essential to Human Functioning
Inorganic compounds essential to human functioning include water, salts, acids, and bases. These compounds are inorganic, i.e., they do not have a carbon-hydrogen bond. Water...
Ionic Compounds: Formulas and Nomenclature
Flame Photometry: Overview
Flame Photometry: Lab
Classification of Elements and Compounds
Compounds are pure substances composed of two or more elements in fixed, definite proportions. Compounds are classified as ionic or molecular (covalent) based on the bonds...

