Synthesis and antioxidation behavior of novel reactive macromolecular antioxidant

Qingkun Liu; Peng Wei; Chuanbo Cong; Qiong Zhou

doi:10.1117/12.2672914

25 April 2023 Synthesis and antioxidation behavior of novel reactive macromolecular antioxidant

Qingkun Liu, Peng Wei, Chuanbo Cong, Qiong Zhou

Proceedings Volume 12598, Eighth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2022); 1259807 (2023) https://doi.org/10.1117/12.2672914
Event: Eighth International Conference on Energy Materials and Electrical Engineering (ICMEE 2022), 2022, Guangzhou, China

Abstract

In this paper, the chemical reaction of pentaerythritol tetraacrylate (PET4A) and 2-mercaptobenzimidazole (MB) was carried out under the initiation of azodiisobutyronitrile, in which the thiol-acrylate Michael addition and the free radical polymerization of PET4A coexisted, and the reactive high molecular weight antioxidant denoted as PET4A@MB was synthesized. Due to the consumption of peroxide radicals by MB and residual acrylate in PET4A@MB, the vulcanization rate of PET4A@MB/EPDM is slowed down, and the crosslinking density becomes lower. Due to the large steric hindrance of PET4A@MB, the internal friction of the motion of the rubber molecular chain is increased, besides, due to the hydrogen bond formed by PET4A@MB, the interaction of the rubber molecular chain is increased, thereby improving the mechanical properties of the rubber. Since PET4A@MB is bonded to the rubber molecular chain, the migration of antioxidants at high temperatures is reduced, thereby improving the thermo-oxidative stability of the rubber.

Citation Download Citation

Qingkun Liu, Peng Wei, Chuanbo Cong, and Qiong Zhou "Synthesis and antioxidation behavior of novel reactive macromolecular antioxidant", Proc. SPIE 12598, Eighth International Conference on Energy Materials and Electrical Engineering (ICEMEE 2022), 1259807 (25 April 2023); https://doi.org/10.1117/12.2672914

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