Synergistic effects of antioxidant and silica on enhancing thermo-oxidative resistance of natural rubber: Insights from experiments and molecular simulations

Luo, Kaiqiang; You, Guohua; Zhao, Xiuying; Lu, Ling; Wang, Wencai; Wu, Sizhu

doi:10.1016/j.matdes.2019.107944

Cited by 57 publications

(51 citation statements)

References 59 publications

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“…The non-bonding energy consists of three parts, namely dispersion, polarity, and hydrogen bonding. Hansen also proposed to divide the Hildebrand solubility parameter into three parts [38]. Improving the dispersity of filler is a key problem in the preparation of high-damping composites.…”

Section: Dynamic Mechanical Properties Of Nbr Compositesmentioning

confidence: 99%

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Investigation of the Compatibility and Damping Performance of Graphene Oxide Grafted Antioxidant/Nitrile-Butadiene Rubber Composite: Insights from Experiment and Molecular Simulation

et al. 2022

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Rubber damping materials are widely used in electronics, electrical and other fields because of their unique viscoelasticity. How to prepare high-damping materials and prevent small molecule migration has attracted much attention. Antioxidant 4010NA was successfully grafted onto graphene oxide (GO) to prepare an anti-migration antioxidant (GO-4010NA). A combined molecular dynamics (MD) simulation and experimental study is presented to investigate the effects of small molecules 4010NA, GO, and GO-4010NA on the compatibility and damping properties of nitrile-butadiene rubber (NBR) composites. Differential scanning calorimetry (DSC) results showed that both 4010NA and GO-4010NA had good compatibility with the NBR matrix, and the Tg of GO-4010NA/NBR composite was improved. Dynamic mechanical analysis (DMA) data showed that the addition of GO-4010NA increased the damping performance of NBR than that of the addition of 4010NA. Molecular dynamics (MD) simulation results show GO-4010NA/NBR composites have the smallest free volume fraction (FFV) and the largest binding energy. GO-4010NA has a strong interaction with NBR due to the forming of hydrogen bonds (H-bonds). Grafting 4010NA onto GO not only inhibits the migration of 4010NA but also improves the damping property of NBR matrixes. This study provides new insights into GO grafted small molecules and the design of high-damping composites.

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Section: Dynamic Mechanical Properties Of Nbr Compositesmentioning

confidence: 99%

Section: Dynamic Mechanical Properties Of Nbr Compositesmentioning

confidence: 99%

Investigation of the Compatibility and Damping Performance of Graphene Oxide Grafted Antioxidant/Nitrile-Butadiene Rubber Composite: Insights from Experiment and Molecular Simulation

et al. 2022

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“…NR gum shows lower retention compared to nanosilica filled composites. Luo et al [37] observed a similar result while studying the effect of silica and antioxidant on NR composites. NR 4SIPX-NS shows excellent tensile retention in comparison with all other natural rubber composites.…”

Section: 05±18mentioning

confidence: 53%

Functionalized Nanosilica for Vulcanization Efficiency and Mechanical Properties of Natural Rubber Composites

Dileep

Jacob

Chandra

et al. 2021

Silicon

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Nano silica Modified nano silica Sodium isopropyl xanthate Modified nano silica NR chains Vulcanization More chain entanglements between NR chains and modified nanosilica Highlights  Sodium isopropyl xanthate (SIPX) is an efficient accelerator for silica modification. SIPX-bound nanosilica improves cure time of natural rubber (NR) compounds. Improved silica -rubber interaction is achieved by SIPX modification. Thermal aging properties of NR composites are improved by SIPX-NS addition.

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“…1,8 Because of high level of unsaturation in a NR molecule, NR is highly susceptible to attack by oxygen, leading to poor thermal oxidative aging resistance. 9,10 The crosslinks of the vulcanizate can be also attacked by the free radicals generated during the aging process. The crosslink density of NR usually increases after thermal oxidative aging, which can be partially attributed to the degradation of polysulfide bonds to monosulfide and disulfide bonds.…”

Section: Introductionmentioning

confidence: 99%

Improving thermal oxidative aging resistance and anti‐reversion property of natural rubber by adding a crosslinking agent

Jiang

Zhang

2021

J of Applied Polymer Sci

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The reversion during the curing and the poor thermal oxidative aging resistance of natural rubber are two main problems for its use as a tire tread. To solve the problems, a crosslinking agent, 1,6-bis(N,N 0 -dibenzyl thiocarbamoyl dithio)-hexane (DBTH), is added into natural rubber/carbon black composites.DBTH can increase the crosslink density, improve the mechanical properties and thermal oxidative aging resistance of the composites. The composites with DBTH can maintain good wet-skid resistance after thermal oxidative aging. When 0.2 phr DBTH is used to substitute 0.1 phr sulfur and 0.1 phr accelerator in a natural rubber/carbon black composite, the reversion during the curing is reduced and the DIN abrasion decreases by 6%, while the modulus and hardness of the composite keep close to the original. Besides, after thermal oxidative aging at 100 C for 48 h, the rate of change of stress at 300% strain of the composite decreases by 27% with the substitution of DBTH.

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Synergistic effects of antioxidant and silica on enhancing thermo-oxidative resistance of natural rubber: Insights from experiments and molecular simulations

Cited by 57 publications

References 59 publications

Investigation of the Compatibility and Damping Performance of Graphene Oxide Grafted Antioxidant/Nitrile-Butadiene Rubber Composite: Insights from Experiment and Molecular Simulation

Investigation of the Compatibility and Damping Performance of Graphene Oxide Grafted Antioxidant/Nitrile-Butadiene Rubber Composite: Insights from Experiment and Molecular Simulation

Functionalized Nanosilica for Vulcanization Efficiency and Mechanical Properties of Natural Rubber Composites

Improving thermal oxidative aging resistance and anti‐reversion property of natural rubber by adding a crosslinking agent

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