Mechanical properties and dissipation energy of carbon black/rubber composites

Abstract

The effects of carbon black on the properties of rubber composites were studied in order to explore their value in producing low rolling resistance truck tires. Carbon black with different grades, N330 (coarser grade of 26–30 nm) and N220 (finer grade of 20–25 nm), was used as a reinforcing agent of natural rubber. The effects of different ratios of carbon black N330 at 40, 45, 50 and 55 parts per hundred rubber (phr) and N220 at 30, 35, 40 and 50 phr were investigated. Rubber composites with N220 had greater rubber/carbon black interaction than those with N330. The Mooney viscosity of rubber composite increased when the carbon black ratio increased. After vulcanisation of rubber, the samples were characterised by dynamic mechanical analysis, tensile strength and heat build-up. The results showed that the strength of rubber composites increased with increasing carbon black ratios. Interestingly, at the same bound rubber level, rubber composites with N220 presented lower dissipation energy, heat build-up and better mechanical properties than those with N330. This study indicated that reinforcement with an optimum amount of carbon black N220 would improve several desirable characteristics of rubber composites when used in low rolling resistance truck tires.

Direct Visualization of Carbon Black Aggregates in Nitrile Butadiene Rubber by THz Near-field Microscope

“…Nitrile butadiene rubber (NBR) is extensively used as a major component in a wide range of rubber applications, and its reinforcement mechanism and structure have been the subject of several studies [1][2][3] . However, in order to increase its tensile strength, the abrasion resistance and glass transition temperature of NBR require reinforcement [4][5][6] despite its excellent and unique qualities. Currently, carbon black (CB) fillers are frequently used as reinforcement agents in the production of rubber compounds [7][8][9] because of their low cost and high degree of dispersibility 10,11 .…”

Study of nylon textile-reinforced natural rubber composite

“…The rubber application is used by some fibre-reinforcing materials inserted during the rubber layers, or the elastomer matrix is directly mixed with reinforcing fillers. The main objective of a reinforcing filler is to enhance the mechanical properties of the rubber composite [4], whilst fibre-based materials provide an additional goal of providing acceptable functional properties to the product [5]. The technical textile can be served as a reinforcing and strength-enhancer in the rubber/textile composite.…”

Study of yield percentage of epoxidized natural rubber preparation

“…Nowadays, NR, cis-1,4-polyisoprene, is significant and widely used in many fields [1][2][3][4]. NR in the latex stage is a colloid of milky white, this type of latex also includes nonrubber components such as lipids, proteins, minerals, etc [3].…”