Effective reinforcement of hydrogen‐bonding assembly silica‐graphene hybrid in natural rubber

Abstract

Silica-graphene hybrid (HGKS) with good dispersion and strong interfacial interactions was fabricated by hydrogenbonding assembly. HGKS was incorporated into natural rubber (NR) to develop high-performance tire treads. During vulcanized process of HGKS filled NR (NR/HGKS), HGKS can participate in the process to form dual dynamic network structure. The interfacial interaction between HGKS and NR due to the dispersion of HGKS was investigated. The strong covalent interaction between NR and HGKS is the most important factor to determine the ultimate performance of rubber composites. In this contribution, a series of HGKS with different hybrid grafting ratio are prepared to reveal the effects of changes in filler surface properties on the structure and mechanical properties of rubber composites. It has been demonstrated that it is an effective hybrid technique to drastically improve its dispersibility in NR and form strong interfacial reactions, and HGKS is expected to be used as a new type of reinforcing filler for the manufacture of high-performance green tire materials.

Preparation of high‐performance and low‐rolling resistance tire tread compound based on hydrogen‐bonded self‐assembled graphene/carbon nanotube‐silica hybrid

“…In particular, the tensile strength of CTGS4/NR composites filled with CTGS4 using CNT as the carbon material and YA as the “molecular bridge” increased as high as 30.18 MPa. It is that the dispersion of carbon material and silicon dioxide is both improved by effective hybridization 24 . And the interface strength between the hybrid material and the rubber matrix is highly enhanced because the C=C in CTGS can further participate in the vulcanization reaction of NR 35,36 .…”

“…It is that the dispersion of carbon material and silicon dioxide is both improved by effective hybridization. 24 And the interface strength between the hybrid material and the rubber matrix is highly enhanced because the C=C in CTGS can further participate in the vulcanization reaction of NR. 35,36 In addition, CTGS2 and CTGS4 hybrid materials have much better dispersion in the rubber matrix due to effective hybrid utility of YA (seen in Table 2 and Figure 4), therefore CTGS2/NR and CTGS4/NR composites have higher mechanical performances.…”

“…Therefore, silica, graphene, and carbon nanotubes must be functionalized to ensure the high dispersion ability in the rubber matrix 19–22 . However, for preparing graphene or/and carbon nanotubes and silica hybrid materials, silane coupling agents are mostly used as “molecular bridges.” 23,24 The silanization reaction between silica and silane coupling agents which is difficult to control requires certain conditions with a low reaction rate. Extra energy is consumed to keep a high reaction rate, and subsequently produced volatile organic compounds (VOC) gas can cause serious environmental pollution 25–27 .…”

Influences of porous reduction graphene oxide/molybdenum disulfide as filler on dielectric properties, thermal stability, and mechanical properties of natural rubber

“…In this work, we selected NR as the elastic matrix, rPGM hybrid conductive filler was prepared by microwave radiation reduction, and composite NGM was prepared by the emulsion coprecipitation method. Due to the synergistic dispersion of rPGO and MoS 2 as well as the formation of a firm interface between the filler and the rubber matrix, [27] the dielectric, mechanical, and thermal stability of NR were improved. [28] The effects of different amounts of rPGM conductive fillers on the dielectric properties of NR were also investigated and analyzed, which providing a reliable way for the application of natural rubber.…”

Advantages of using a dual‐filler system with carbon black and rockwool fiber on Nitrile Rubber composites from a technical standpoint

“…Due to its importance, there are several papers in the literature with a focus on characterizing, describing, and comprehending CB's contribution to rubber technology. [4][5][6][7][8] Despite CB's benefits, other reinforcing fillers have also been investigated in an effort to improve properties as well as create a more sustainable product since CB comes from fossil fuels. 6,7,9 In this context, the use of a dual-filler system is interesting because it can possibly result in a synergistic effect that improves the product's final properties.…”