Abstract
In this contribution, we reported the investigation of EPDM rubber reinforced by talcum grafted polybutadiene (MSi-Talc). First, poly (3-methacryloxypropyltrimethoxysilane)-b-polybutadiene-b-poly(3-methacryloxypropyltrimethoxysilane) (PMSi-b-PB-b-PMSi) triblock copolymer was synthesized by esterification reaction and RAFT polymerization of 3-methacryloxypropyltrimethoxysilane. Second, talcum powder (Talc) was spraying with PMSi-b-PB-b-PMSi solution and drying to obtain modified talc (MSi-Talc). MSi-Talc and Talc were incorporated into EPDM simultaneously. It was found that Talc in the EPDM/MSi-Talc vulcanizates was much better distributed and dispersed than in the EPDM/Talc composites. Compared to Talc dispersion and Talc-rubber interaction of the EPDM/Talc composites, the mechanical properties (tensile strength, elongation at break, and tear strength) of the EPDM/MSi-Talc composites were significantly improved, and the compression set of the EPDM/MSi-Talc composites was greatly decreased and much lower than that of the EPDM/Talc composites.
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Funding
This work was financially supported the Key Research and Development Project of Anhui Province (2022a05020009), Science and Technology Plan Project of Huangshan City (2021KC-05), the Engineering Research Project of Anhui Polytechnic University (HX-2021-09-007).
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Yuxing Wang, Wang, Q., Zhao, S. et al. Grafting Polybutadiene onto Surfaces of Talcum Powder by Spray-Drying Technology and Modification of EPDM Rubber. Polym. Sci. Ser. B 65, 980–990 (2023). https://doi.org/10.1134/S1560090424600116
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DOI: https://doi.org/10.1134/S1560090424600116