Synthesis of a Sulfur- bearing Secondary Antioxidant with High Molecular Weight and Its Antioxidation Behavior in EPDM

被引：0
|
作者：
Liu Q. [1 ]
Cong C. [1 ]
Meng X. [1 ]
Zhou Q. [1 ]
机构：
[1] College of New Energy and Materials, China University of Petroleum-Beijing, Beijing
来源：
Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2023年 / 39卷 / 02期
关键词：
anti-migration properties; antioxidation performance; high-molecular-weight sulfur-bearing secondary antioxidant; thiol-ene click reaction;
D O I：
10.16865/j.cnki.1000-7555.2023.0027
中图分类号：
学科分类号：
摘要：
A novel high- molecular- weight sulfur- bearing secondary antioxidant, OVPOSS@MB, was synthesized by thermal- initiated thiol- ene click reaction of 2- mercaptobenzimidazole (MB) with octavinylsesquisiloxane (OVPOSS). The chemical structure of OVPOSS@MB was confirmed by Fourier transform infrared spectroscopy and X- ray photoelectron spectroscopy, and the effects of OVPOSS@MB on the vulcanization characteristics, tensile properties, and oxidation resistance of EPDM were investigated. The results show that OVPOSS@MB slows down the vulcanization rate and reduces the degree of cross- linking of rubber, which makes the OVPOSS@MB/EPDM composites exhibit lower rubber modulus and higher elongation at break. In addition, compared with the low- molecular- weight antioxidant MB, the high- molecular- weight antioxidant OVPOSS@MB has higher anti- migration properties, together with the free radical scavenging function of the OVPOSS lattice, making OVPOSS@MB have more excellent antioxidation performance than MB. © 2023 Chengdu University of Science and Technology. All rights reserved.
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页码：10 / 16
页数：6
相关论文
共 23 条
  • [1] Liang L H, Zhong J Y, Ding L, Et al., Mechanism of thermal oxidative aging of butadiene rubber, Polymer Materials Science & Engineering, 35, 2, pp. 107-111, (2019)
  • [2] Xie Y L, Song P, Xu B B, Et al., Research progress in thermo-oxidative aging of unsaturated rubber, China Synthetic Rubber Industry, 42, 1, pp. 71-78, (2019)
  • [3] Liu Q K, Li J, Cong C C, Et al., Thermal and thermo- oxidative degradation of tetrafluoroethylene – propylene elastomer above 300 ° C, Polymer Degradation and Stability, 177, (2020)
  • [4] Liu Q K, Li J, Jiang Y C, Et al., Effect of crosslinked structure on the chemical degradation of EPDM rubber in an acidic environment, Polymer Degradation and Stability, 185, (2021)
  • [5] Delaunay-Bertoncini N, Van der Wielen F W M, De Voogt P, Et al., Analysis of low- molar- mass materials in commercial rubber samples by Soxhlet and headspace extractions followed by GC–MS analysis, Journal of Pharmaceutical and Biomedical Analysis, 35, pp. 1059-1073, (2004)
  • [6] Ignatz- Hoover F, To B H, Datta R, Et al., Chemical additives migration in rubber, Rubber Chemistry and Technology, 76, pp. 747-768, (2003)
  • [7] Luo K Q, Ye X, Zhang H, Et al., Vulcanization and antioxidation effects of accelerator modified antioxidant in styrene- butadiene rubber: experimental and computational studies, Polymer Degradation and Stability, 177, (2020)
  • [8] Wu W J, Zeng X R, Li H Q, Et al., Synthesis and antioxidative properties in natural rubber of novel macromolecular hindered phenol antioxidants containing thioether and urethane groups, Polymer Degradation and Stability, 111, pp. 232-238, (2015)
  • [9] Nair D P, Podgorski M, Chatani S, Et al., The thiol- Michael addition click reaction: a powerful and widely used tool in materials chemistry, Chemistry of Materials, 26, pp. 724-744, (2014)
  • [10] Wang X F, Xing W Y, Tang G, Et al., Synthesis of a novel sulfur-bearing secondary antioxidant with a high molecular weight and its comparative study on antioxidant behavior in polypropylene with two commercial sulfur- bearing secondary antioxidants having relatively low molecular weight, Polymer Degradation and Stability, 98, pp. 2391-2398, (2013)
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