Impact of aspect ratio and CNT loading on the dynamic mechanical and flammability properties of polyethylene nanocomposites

Abstract

In this study, the effects of aspect ratio and loading of multiwalled carbon nanotubes (MWCNTs) on the dynamic mechanical, thermal, and flammability properties of low-density polyethylene (LDPE)/MWCNT nanocomposites prepared by the melt blending technique were investigated. At low CNT loading, CNT with low aspect ratio acted as a plasticizer in LDPE. The storage modulus of the nanocomposites increased with the increase in aspect ratio and CNT loading. The increase in scan rate for the composites results in the decrease in total crystallinity, crystallization peak temperature, and a late onset of crystallization. The flammability properties like heat release capacity, peak heat release rate, and total heat release decrease with the increase in both aspect ratio and loading of CNTs in the composites.

Rheological and thermal studies of polystyrene calcium phosphate nanocomposites

“…HRR is one of the most important parameters to characterize the fire hazard . The PHRR decreases with the increase in nanofiller loading in the composites.…”

Effect of network formation on the electrical, mechanical, and processability behaviors through the preferential distribution of carbon black in the incompatible polymer blend composite

“…The process of making an insulating elastomeric matrix to a conducting one through the addition of carbon black is well established. A path zone formation takes place in the elastomer matrix through which the insulating matrix becomes a conducting one, which is known as percolation zone . The formation of percolation zone depends on various factors like time and temperature and gives the opportunities to explore many more interesting phenomena connected to the conducting polymeric composite.…”