Viscoelastic and thermal properties of naturalrubber low‐density polyethylene composites with boric acid and borax

Abstract

The influence of boric acid (BA) and borax (BO) neutron‐absorbing fillers on thermal stability and viscoelastic behavior of natural rubber (NR) low‐density polyethylene composites has been studied. The thermal degradation and dynamic mechanical properties of the composites have been analyzed as a function of temperature. The results revealed the enhancement of thermal stability of the composites by the addition of BA and BO fillers. The flame resistance of the material was improved by the addition of both the fillers. The storage modulus was found to be dependent upon the temperature and nature of the filler. The amount of NR chains immobilized by filler particles has been quantified from dynamic mechanical analysis and secondary filler/filler interactions have been verified by the Payne effect analysis. Finally, the experimental results have been compared with theoretical predictions.

The Flame Retardancy of Polyethylene Composites: From Fundamental Concepts to Nanocomposites

“…The results revealed that the incorporation of ZB into HDPE, increased the fire resistance of the starting polymer without diminishing its mechanical properties. Another recent study is developed by Abdulrahman et al to investigate the effect of BA and borax on the thermal and viscoelastic properties of natural rubber (NR)/LDPE/high abrasion furnace carbon black composites [103]. For both fillers, the residual char yield was increased in the related composites.…”

“…Effect of the boron compound additive on cross-linking and DTG curves of the NR/LDPE/HAF (100/10/30) with varying loadings (0-30) of (a) BA, and (b) borax (BO), reprinted with permission from Ref [103]…”

Influences of Modified Sm2O3 on Thermal Stability, Mechanical and Neutron Shielding Properties of Aminophenol Trifunctional Epoxy Resin

“…Blending hydrogen-rich polymer matrix with high neutron cross-section absorbing elements can integrate neutron moderation and absorption. So, these materials are expected to become alternative materials for metals and concrete in nuclear facilities, such as polyethylene (PE) [ 14 , 15 ], high-density polyethylene (HDPE) [ 16 , 17 ], epoxy resin (EP) [ 18 , 19 ], ethylene propylene diene monomer (EPDM) [ 20 ] and polyimide (PI) [ 21 , 22 ], etc. Although PE and EPDM matrix have good processability, they have low thermal stability and it is difficult to use them at a temperature higher than 100 °C for a long time.…”