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Xanthate-modified silica as a novel multifunctional additive for properties improvement of natural rubber.
- Source :
-
Composites Science & Technology . Feb2021, Vol. 203, pN.PAG-N.PAG. 1p. - Publication Year :
- 2021
-
Abstract
- Reinforcing agents and accelerators are the most important auxiliaries for rubber industry. In this paper, ceric ammonium nitrate (CAN), for the first time, worked as a catalyst for hydroxyl groups in silica to prepare silica grafted sodium xanthate (SSX), which was used as an in-situ modified multifunctional rubber additive in this work. Compared with sodium isobutyl xanthate (SIBX), SSX has enhanced the initial and final degradation temperatures, achieving the improvement of 103 °C and 277 °C, respectively. Notably, owing to the powerful interaction between each component, SSX can be homogeneously dispersed in the natural rubber (NR) matrix in contrast to the seriously aggregated silica. Meanwhile, NR/SSX composites exhibited superior curing properties and showed an increase of 29.1% and 33.4% in the tensile strength and tear strength, respectively, compared to that of traditional 2-mercaptobenzothiazole (MBT) system. Since high-performance rubber composites can be obtained by introducing SSX, we believe that this work can provide a novel and facile approach to prepare natural silicate minerals-based vulcanization accelerators. Image 1 • Compared with traditional accelerators, SSX is an eco-friendly accelerator. • SSX can be better dispersed in the rubber matrix and improve the thermal stability of the xanthate. • Due to the excellent vulcanization and reinforcement effect, the mechanical properties of NR/SSX composites are greatly improved. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02663538
- Volume :
- 203
- Database :
- Academic Search Index
- Journal :
- Composites Science & Technology
- Publication Type :
- Academic Journal
- Accession number :
- 148141044
- Full Text :
- https://doi.org/10.1016/j.compscitech.2020.108567