Preparation and properties of rubber nanocomposites based on NR/NBR blend reinforced with nanosilica and carbon black

Abstract

Rubber nanocomposites based on natural rubber (NR)-butadiene nitrile rubber (NBR) blend filled with silane modified nanosilica (NSBT) and carbon black (CB) were prepared by melt mixing method by using an internal mixer. The effect of CB and NSBT on thermo-mechanical properties of the materials was investigated by scanning electron microscopy (SEM), thermogravimetric analysis (TGA), dynamic-mechanical analysis (DMA) and tensile testing method. The results show that the NR/NBR blends reinforced with both CB and NSBT possess the properties much better than that reinforced with only CB or NSBT. With the CB/NSBT ratio of 25/5, the properties of the NR/NBR blends were remarkably enhanced, especially the increase in tensile strength by about 64 % and the increase in the thermal stability by about 13 o C. The reasons for the improvement of NR/NBR blends' properties are due to better compatibility of the components in the rubber blend as well as the better compactness in their structure with the presence of NSBT.

Research on the Friction Noise Generation Mechanism and Suppression Method of Submarine Rubber-Based Propeller Bearings—A Review

“…Filling reinforcement is a method of improving the mechanical properties of composite materials by adding fillers to achieve the purpose of improving rubber friction and wear performance. Commonly used reinforcing fillers include zinc oxide [ 57 ], carbon black [ 58 ], silica [ 59 ], nanoparticles, resins, and short fibers. He et al [ 60 ] first established a three-layer frictional molecular model with an NBR matrix reinforced with nano zinc oxide particles as the core and an iron layer as the counterpart.…”

Review: Natural rubber – Improvement of properties

“…An effective method for enhancing CB reinforcing effect is combination of CB and other fillers – so called hybrid fillers. [ 57‐60 ] It worth to note hybrid filler itself does not only enhance reinforcing ability of each filler in system but also optimize the reinforcement by advantage of each one. For example, filler systems from two types of CB with different particle size may improve compression ‐ elastic properties thanks to big particles, while small particles impart improvement of tensile properties.…”

“…[ 57 ] Combination CB/CNT or CB/conductive CB not only improve mechanical properties but also electric or thermal conductivity. [ 58,59 ] In its turn, CB may intensify the influence of nanofiller in their hybrid system: nanofiller content in CB/nanofiller system is lower than if only nanofiller is used at the same reinforcement effect. [ 60,61 ] In CB/nanoclay filler network is formed at clay content of 3.1 phr, while if only nanoclay is applied, the same network is revealed at clay content of 5.9 phr.…”

Determination of Dynamic Mechanical Properties on Addition of Carbon Black-Nanosilica Hybrid Fillers in NR-SBR Blends with Special Reference to Power Transmission Belt Applications

“…In recent decades, nanofillers emerged as a possible reinforcement for rubber in various industries with their excellent physical and dynamic properties. Particularly, fillers like nanosilica, nanoclay, and graphene gain tremendous attention from researchers and academia for their ability to impart a wide range of properties in various rubber matrices [6]. These nanofillers possess superior properties like improved mechanical strength, good abrasion resistance, low heat build-up, and low rolling resistance compared to ordinary carbon black-filled rubber products.…”