In situ assembled C₃N₄/SiO₂ nanohybrids for high comprehensive performance solution polymerized styrene‐butadiene rubber/butadiene rubber

Abstract

In this work, a series of C 3 N 4 /SiO 2 nanohybrids were prepared and incorporated to solution polymerized styrene-butadiene rubber/butadiene rubber (SSBR/BR) to prepare "green tire" tread rubber. As expected, C 3 N 4 /SiO 2 nanohybrids are uniformly dispersed in SSBR/BR, and SiO 2 possesses a small average particle size of $15 nm. In addition, the interfacial interaction between C 3 N 4 /SiO 2 nanohybrids and rubber matrix are significantly enhanced. Hence, the mechanical properties of C 3 N 4 /SiO 2 -SSBR/BR nanocomposites are greatly improved. The tensile strength of 5% C 3 N 4 /SiO 2 -SSBR/BR nanocomposites (5 wt% C 3 N 4 in C 3 N 4 /SiO 2 ) improved 1580% compared to pristine SSBR/BR. Furthermore, dynamic mechanical analyses indicate the increasing wet skid resistance (10.8% higher) and decreasing rolling resistance (50.5% lower) of 5% C 3 N 4 /SiO 2 -SSBR/BR nanocomposites compared with SiO 2 -SSBR/BR. In addition, the wear volume and heat built-up are reduced at the same time. This work paves the way to prepare high comprehensive performance "green tire" and could be extend to the reinforcement of elastomer composites.

Preparation and characterization of halloysite nanotube‐silica/silicone rubber composites: Effect of HNTs on mechanical and thermal properties

“…The XRD peaks of the purchased RHNTs are in general agreement with the standard peak scale, the characteristic peak at 2θ = 12.1° corresponds to the (001) lattice plane with a layer spacing of 0.74 nm calculated by Bragg's equation, 2θ = 24.88° corresponds to the (002) lattice plane with a layer spacing of 3.58 nm, which suggests that the RHNTs are interlayer dehydrated, and 2θ = 20.02° and 2θ = 35.02° correspond to the (020) (110) and (200) (130) lattice planes, respectively, which further confirms that RHNTs do not contain water molecules 38 . For the SiO 2 sample, a broad characteristic peak exists only at 2θ = 22.7°, indicating that it is amorphous silica 39 . After the preparation of HNTs‐SiO 2 composite filler, the characteristic diffraction peaks of both HNTs and SiO 2 can be seen in the XRD spectrum.…”

“…38 For the SiO 2 sample, a broad characteristic peak exists only at 2θ = 22.7 , indicating that it is amorphous silica. 39 After the preparation of HNTs-SiO 2 composite filler, the characteristic diffraction peaks of both HNTs and SiO 2 can be seen in the XRD spectrum.…”