Cracking, structural, and mechanical property changes of SIBR and related elastomers during the ozone aging process

Wang, Xiaolei; Pan, Hongwei; Yang, Kun; Zhang, Ping

doi:10.1016/j.polymdegradstab.2021.109774

Cited by 8 publications

(4 citation statements)

References 10 publications

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“…Rubber products also serve critical functions in the military, aerospace, and other national defense fields. Nevertheless, the exposure of rubber products to oxygen, high or low temperatures, light, and other factors may cause the cross-linking or breakage of the polymer chains, resulting in material discoloration, whitening, softness, stickiness, hardness, brittleness, surface cracks, and other issues. − This phenomenon is known as rubber material aging, to which unsaturated rubber is particularly susceptible. , …”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of a Novel Reactive and Low-Migration-Resistant Antioxidant and Its Application in Rubber Composites

Wang,

Sun,

et al. 2024

ACS Omega

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The addition of antioxidants to rubber is one of the most economical and effective methods for delaying rubber aging. However, antioxidant migration can cause environmental pollution. To address this issue, a new reactive antioxidant was synthesized via the chemical bonding of glycidyl methacrylate (GMA) and p-aminodiphenylamine (PPDA). The product was characterized by Fourier-transform infrared spectroscopy, which confirmed the successful reaction between GMA and PPDA, resulting in a compound with the expected structure. The mixture was then combined with a composite of styrene−butadiene rubber and carbon black. The tensile strength, antioxidant properties, migration, and RPA of the resulting materials were tested and compared with those of the commercial antioxidants N-(1,3-dimethylbutyl)-N′phenyl-p-phenylenediamine, N-isopropyl-N′-phenyl-1,4-phenylenediamine, and poly(1,2-dihydro-2,2,4-trimethylquinoline). After the glycidyl methacrylate antioxidant was grafted onto paminodiphenylamine, it became highly compatible with and dispersed in the rubber matrix. The antiaging and antimigration properties of the rubber antioxidants were enhanced without damaging the mechanical properties of the rubber matrix. The shortterm and long-term antiaging and antimigration properties of this antioxidant are superior to those of commercially available antioxidants.

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Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of a Novel Reactive and Low-Migration-Resistant Antioxidant and Its Application in Rubber Composites

Wang,

Sun,

et al. 2024

ACS Omega

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“…However, the presence of numerous unsaturated bonds in the rubber matrix makes it susceptible to aging factors such as light, heat, oxygen, and ozone. This deterioration adversely impacts the performance and aesthetics of rubber products, leading to a shortened service life 4,5 . Among the various forms of rubber aging, thermo‐oxidative aging is the most prevalent.…”

Section: Introductionmentioning

confidence: 99%

Preparation of chitosan‐based macromolecular synergistic antioxidants containing hindered phenolic and secondary amine structures and its effects on thermo‐oxidative aging of styrene‐butadiene rubber/silica composites

Wu,

Xie,

Huang

et al. 2024

Polymers for Advanced Techs

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In this study, chitosan (CS)‐based macromolecular synergistic antioxidant CS‐UC‐TDAA containing carbon–carbon double bond, hindered phenol, and aromatic secondary amine was prepared by using CS,10‐undecenoyl chloride (UC), p‐aminobenzoic acid (AA), 3,5‐di‐tert‐butyl‐2‐hydroxybenzaldehyde (TD) via esterification, Schiff base reaction, and acylation reaction. The molecular structure of CS‐UC‐TDAA was characterized by fourier transform infrared, 1H NMR, and elemental analysis. The effects of macromolecular synergistic antioxidant CS‐UC‐TDAA, small molecular antioxidant TDAA, commercial antioxidant 4020, and butylated hydroxytoluene (BHT) on the antiaging properties of styrene‐butadiene rubber (SBR)/SiO2 composites were systematically studied by accelerated thermo‐oxidative aging test, thermogravimetric (TG) analysis, and methanol Soxhlet extraction experiment. The experimental results show that CS‐UC‐TDAA has more outstanding thermo‐oxidative aging resistance, thermal stability, and solvent extraction resistance in SBR/SiO2 composites than TDAA, 4020, and BHT. The macromolecular synergistic antioxidant CS‐UC‐TDAA endows SBR/SiO2 composites with more durable antiaging performance, which is attributed to the synergistic antioxidant effect of its hindered phenol and aromatic secondary amine groups. Additionally, its resistance to migration and extraction is facilitated by the crosslinking of the carbon–carbon double bond with the rubber and its substantial molecular weight.

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“…Compared with the good characteristics of synthetic rubber in some specifc felds, natural rubber (NR) has more excellent comprehensive performance and is mainly used to prepare tires for cars and airplanes. However, during the period of processing NR from raw rubber to rubber products, with the Mooney viscosity and Wallace plasticity values increased gradually [1][2][3][4], a phenomenon of hardening emerges and makes the procedure of processing and producing difcult, furthermore leading to a negative efect on the serving properties of NR. Moreover, because of the aldehyde groups existing in the molecular chain of NR, the molecular chain will cross-link and harden NR in the course of storage and application [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Enhanced Ozone Aging Resistance of Natural Rubber with 2-Mercaptobenzothiazole as the Constant-Viscosity Agent

Zhou

Deng

Gui

et al. 2023

Journal of Chemistry

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For the actual storage and serving, a phenomenon of hardening and cracking always occurs in the natural rubber (NR), which sharply reduces the mechanical performance and hinders the further application of NR. Recently, some type of constant-viscosity agent has played a key role to be used for the treatment of NR, especially for the effect of ozone aging resistance. In this study, 2-mercaptobenzothiazole (MBT) was introduced into NR, and the constant viscosity and ozone aging resistance of NR with different contents of MBT were investigated using an accelerated storage experiment and an ozone aging experiment, respectively. The results indicated that the addition of MBT could improve the constant viscosity of NR in a certain degree. With the MBT content of 0.15%, NR/MBT-0.15 obtained a best ozone aging resistance and maintained the original high tensile strength. Therefore, it provided a promising route to design and prepare NR with high-quality ozone aging resistance.

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Cracking, structural, and mechanical property changes of SIBR and related elastomers during the ozone aging process

Cited by 8 publications

References 10 publications

Synthesis and Properties of a Novel Reactive and Low-Migration-Resistant Antioxidant and Its Application in Rubber Composites

Synthesis and Properties of a Novel Reactive and Low-Migration-Resistant Antioxidant and Its Application in Rubber Composites

Preparation of chitosan‐based macromolecular synergistic antioxidants containing hindered phenolic and secondary amine structures and its effects on thermo‐oxidative aging of styrene‐butadiene rubber/silica composites

Enhanced Ozone Aging Resistance of Natural Rubber with 2-Mercaptobenzothiazole as the Constant-Viscosity Agent

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