Influence of fillers dispersion on friction and wear performance of solution styrene butadiene rubber composites

Abstract

Development of structure–properties relationships between the fillers/rubber matrix interface chemistry and the dispersion and interfacial adhesion properties of the rubber composites is critical to predict their bulk mechanical and tribological properties. In this paper, three solution styrene butadiene rubber (SSBR) composites containing various fillers with tailored interfacial chemistry were prepared via conventional mixing technique. Subsequently, thermal and structural features of filled SSBR composites were monitored by TG, DSC, XRD, XPS, FESEM and TEM, respectively. Sliding contact experiments were conducted to study tribological properties of styrene butadiene rubber composites under dry and wet conditions. It was shown that the SSBR filled with silicon dioxide nanoparticles significantly reduced both the friction coefficient and the wear against marble block. On the contrary, it exhibited an increased friction coefficient and wear under wet friction conditions due to the specific superior wet‐skid resistance of silicon dioxide nanopartilce filled rubber composites, a good dispersion of silicon dioxide nanopartilce in the rubber matrix and strong interfacial adhesion between nanoparticles and rubber matrix. In addition, the influence of fillers dispersion and interfacial adhesion on friction and wear of styrene butadiene rubber composites was evaluated employing theoretical calculation, and the predicted results were in agreement with the experimental observations. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43589.

Erucamide/thermoplastic polyurethane blend with low coefficient of friction, high elasticity and good mechanical properties for intelligent wearable devices

“…Figures 4(a')–4(c') show the surface morphology of pure TPU and Eru/TPU blends. At a low content of erucamide (0.5 wt%), some of the erucamide particles are observed on the surface of TPU, indicating that there is a layer of erucamide molecules coated on the surface, and some erucamide crystals (particles) are formed on the coating layer 38 . Such coating layer of erucamide molecules can act as a lubrication layer (see below), facilitating the decrease in the COF of the TPU blend.…”

“…At a low content of erucamide (0.5 wt%), some of the erucamide particles are observed on the surface of TPU, indicating that there is a layer of erucamide molecules coated on the surface, and some erucamide crystals (particles) are formed on the coating layer. 38 Such coating layer of erucamide molecules can act as a lubrication layer (see below), facilitating the decrease in the COF of the TPU blend. At a high content of erucamide (4 wt%), a lot of erucamide crystals (particles) are formed on the coating layer of erucamide molecules, indicating that such a layer of erucamide molecules is more completely coated on the TPU surface, facilitating the further decrease in the COF of the TPU blend.…”

Functionalized graphene‐reinforced rubber composite: Mechanical and tribological behavior study

“…On the basis of all the above results, the tribological model of graphene‐filled SSBR‐BR composites comes into being as shown in Figure . For SSBR‐BR composite, the main mechanism is abrasive wear, which is caused by scraping and tearing of asperity of the counterpart . Furthermore, for filled SSBR‐BR composites, the existence of the layered graphene promotes to tear and peel off .…”

“…The formulations of all SSBR and BR composites with different fillers were prepared using a two‐roll mill ((S)XK 100B, Changzhou Dongfang Huayang Machinery Factory, China) and subjected to compression at 150 °C under 15 MPa pressure for the optimum curing time ( t 90 , determined by a vulcameter) employing a plate vulcanizing machine (XLB‐D, Huzhou Hongqiao Rubber Machinery Co. Ltd., China). The basic formulation of the composite was as follows: SSBR 100.00 phr; BR 31.25 phr; nSiO 2 /Si69 65.63 phr (the silica nanoparticles were treated with Si69, as seen in our previous work; zinc oxide 7.81 phr; stearic acid 3.13 phr; Diphenyl guanidine 4.69 phr; N ‐cyclohexyl‐2‐benzothiazolylsulfenamide 4.38 phr; sulfur 4.38 phr. In this context, GO, rGO, and FGS (content of 0.5 wt % in per hundred of SSBR matrix) were also chosen as fillers, respectively, which are labeled as SSBR‐BR‐GO, SSBR‐BR‐rGO, and SSBR‐BR‐FGS.…”

Investigation of friction and wear behavior of hydroxyl-functionalized graphene nanoplatelets filled elastomer nanocomposites

“…Depending on the operating conditions, elastomer-based composites exhibit lower frictional behavior in dry conditions compared to equivalent metal materials. [3][4][5] The service life of elastomer-based products such as air springs, vehicle tires, and sealing elements, operating under dynamic conditions where the effects of friction are significant, are pretty limited due to their low resistance to wear.…”