Effects of filler–rubber interaction on dynamic mechanical properties and reinforcement of NR vulcanisates

Abstract

The dynamic mechanical properties were obtained over a wide range of temperatures and strains on vulcanisates filled with carbon black (N330) and a modified carbon black respectively. The modified carbon black (GCB) was prepared by adding special resorcinol formaldehyde latex (RFL) into N330. The main chain of RFL has good compatibility with the rubber matrix, whereas the side chain with pyridine function can reacts with the acidic functional groups on the surface of carbon black. From SEM images, it was found that GCB filled natural rubber showed better filler dispersion. The role of modified carbon black was studied in the rubber matrix for better understanding of the mechanism of reinforcement. From the stress-strain behaviour of filled vulcanisates, it can be concluded that GCB show improved mechanical properties due to the stronger filler-rubber interaction.

Mechanical and dynamic mechanical properties of natural rubber blended with waste rubber powder modified by both microwave and sol–gel method

“…From above analysis of Payne effect, NR/MWRP composite with TESPT showed a higher filler–rubber interaction. That meant that a thicker rubber shell was formed for composite with TESPT 30. So energy dissipation of vulcanizate without TESPT arose from a breakdown of filler transient network and loss of trapped rubber chains in the filler structure during dynamic test.…”

Combination of Phosphorous Flame Retardants and Aluminum Trihydrate in Multicomponent EPDM Composites

“…The addition of PANI showed no impact on R-1/2 compared to R-1/2P. The rubber containing ATH exhibited the lowest values for tan δ, meaning that the rubber was more elastic, because the high amounts of ATH led to more rubber-filler interaction, restricting the movement of the rubber chains [45]. The amount of incorporated APP and ATH determined the values of tan δ.…”

“…The amount of incorporated APP and ATH determined the values of tan δ. At temperatures above T g the viscosity became lower, because the rubber molecules adjusted more rapidly and followed the dynamic strain, as the potential energy barriers were similar to the thermal energy [45].…”

“…At lower temperatures, the values of tan δ were lower because the rubber itself was stiffer. The elastomers experienced higher viscosity, because hardly any movement of the rubber segments occurred, and the fillers had a limited effect on the energy dispersion [45]. The nonflame-retarded rubber R showed the peak of tan δ at −45 C, indicating that the α-transition of EPDM at T g [46].…”

Study on properties of natural rubber reinforced by poly(sodium‐4‐styrenesulfonate)‐decorated carbon black with a latex compounding technique

“…The introduction of CB can often enhance the tensile strength and tear resistance of the filled composite. It is well recognized that the particle size, structure, surface activity of CB have large influence on the physical performance of elastomeric materials . Moreover, the dispersion of CB in the matrix is also an important factor to the result of reinforcement .…”