Mechanical and tribological performance of chopped basalt fiber/acrylonitrile–butadiene rubber composites

Abstract

In this study, a series of basalt fiber (BF)/acrylonitrile–butadiene rubber (NBR) composites with various BF contents were prepared and evaluated. The effects of the BF content, thermal aging, and friction condition on tribological properties of the composites were the primary focus. The tribological performances of the composites were evaluated by DIN abrasion, Akron abrasion, and high‐speed block‐on‐ring tests, respectively. The results showed that with an increase in the BF content, for the DIN and Akron abrasion tests, the wear loss increased due to insufficient interactions between the BFs and the NBR matrix, whereas for the block‐on‐ring friction, both the friction coefficient and the wear loss of the composites decreased attributed to the effect of BF on transfer film formation on the polished counterpart surface. The thermal aging enhanced the wear resistance of the composites for all three friction conditions by improving the crosslinking density of the NBR matrix. POLYM. COMPOS., 40:630–637, 2019. © 2017 Society of Plastics Engineers

Mechanical and tribological performance of acrylonitrile‐butadiene rubber/carbon black/cryptocrystalline graphite composites

“…The variation of COF was divided into three stages: COF dropped sharply first, then gradually increased and finally reached a steady state. A similar variation of the COF‐time curve was also reported in NBR/CB/basalt fiber composites 37,38 . The variation of COF was quite complicated and affected by heat generation, real contact area, surface roughness, and so forth 39 .…”

“…A similar variation of the COF-time curve was also reported in NBR/CB/basalt fiber composites. 37,38 The variation of COF was quite complicated and affected by heat generation, real contact area, surface roughness, and so forth. 39 COF reached a steady state until a dynamic balance was achieved.…”

Crosslinking behavior and enhanced mechanical properties of acrylonitrile‐butadiene rubber composites by incorporating aluminum ammonium sulfate particles

“…The samples undergo periodic loads during abrasion, developing periodic surface pattern perpendicular to the direction of rotation due to the viscoelasticity of rubber materials. Schallamach ridges observed after the wear testing on the abraded surfaces for both NBR/NH 4 Al(SO 4 ) 2 ·12H 2 O composites and NBR/S sample, as shown in the red rectangles of Figure . For the NBR/S sample, large and deep ridges with evident folding are clearly found, resulting from the adhesion of rubber wave to the abrader when the tear strength of rubber is low.…”

Study on water resistance and tribological behaviours of basalt fibre/acrylonitrile-butadiene rubber composites under water lubrication at various temperatures

“…With the temperature increase, the water absorption ratio of the composites increased and was independent of the BF content. In our previous study, 25 the NMR test showed that the T 2 of the thermal-oxidative-aged NBR samples was lower than that of the initial one, which indicated further crosslinking during the ageing process. However, water ageing at temperatures above 50 C led to an increase of the T 2 of the samples (the typical magnetization intensity curves of the NBR vulcanizates are as shown in Fig.…”

“…4,[20][21][22][23][24] Zhang et al 23 reported that the addition of BFs improved the hardness, compressive strength and creep resistance of the polyetheretherketone (PEEK)-based composites, and a BF/PEEK composite with 2.5-7.5 phr BFs possessed a low COF and excellent wear resistance. In our previous work, 25,26 BFs were mixed into the NBR as reinforcement, and it was demonstrated that when sliding against the stainless steel counterface under dry condition, the addition of BFs could decrease both the COF and the wear rate. For the water-lubricated bearing application, understanding the tribological performance of the material under water lubrication is very important for the property assessment and life prediction of the product.…”