Influence of coagents on Payne effect of butadiene rubber vulcanizates

Zhong, Xinke; Song, Yihu; Zheng, Qiang; Wang, Wanjie

doi:10.1016/j.polymer.2020.123298

Cited by 18 publications

(7 citation statements)

References 83 publications

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“…FTIR and TGA analyzes revealed no chemical interactions among S40, S30, and W. The rheological investigation was mainly based on physical interactions that were governed by the morphology and interface. Therefore, a comprehensive investigation of filler aggregation dynamics and its structural breakdown was conducted to explore the interaction between SBS and W under a fixed shear strain, followed by the storage modulus or strain amplitude (Payne effect) 21–24 . All composites exhibited the Payne effect, although the W content had a marked influence on it, as summarized in Figure 6.…”

Section: Resultsmentioning

confidence: 99%

“…Therefore, a comprehensive investigation of filler aggregation dynamics and its structural breakdown was conducted to explore the interaction between SBS and W under a fixed shear strain, followed by the storage modulus or strain amplitude (Payne effect). [21][22][23][24] All composites exhibited the Payne effect, although the W content had a marked influence on it, as summarized in Figure 6. S40-W showed a structural breakdown with a much lower strain than that observed for S30-W composites.…”

Section: X-ray Transmission Post-irradiation Thermal Management and F...mentioning

confidence: 90%

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Stress relaxation and thermal management in highly filled flexible styrene butadiene styrene copolymer‐tungsten composites for high‐energy radiation attenuation

et al. 2023

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A high loading of high‐density and high‐atomic‐number fillers are necessary to obtain desirable X‐ray attenuation characteristics from radiation shields. However, at high filler loadings, the mechanical and viscoelastic properties of polymers are severely impaired, posing a long‐term threat to the mechanical integrity and radiation protection, and the radiation shield temperature may increase after prolonged exposure to ionizing radiation, accelerating the aging of the polymer matrix. In addition, inadequate thermal conduction can make the user uncomfortable while using radiation shields for personal protection. Unfortunately, little attention has been paid to the viscoelastic, stress relaxation, and thermal conductivity‐related features of these densely loaded systems, despite the significant effect of these parameters on long‐term applications and user compliance. In the present work, two different styrene butadiene styrene (SBS) copolymers were used to develop SBS‐tungsten (W) composites. At 500 phr W loading, significant attenuation of X‐rays was achieved along with good tensile strength and elongation at break. The results indicate that the concentration of styrene in the SBS and W loading substantially affected the attenuation, mechanical and rheological properties, and tensile stress relaxation rates. The thermal conductivity increased by >100%, and after gamma irradiation, faster cooling was observed in the W‐loaded composites beyond 300 phr of W loading. The 40% styrene composite demonstrated superior heat transfer at high W loadings owing to the better dispersion and distribution of the W filler in the SBS matrix. Rheological results showed that SBS‐W composites with 30% styrene had a more pronounced Payne effect than those with 40% styrene. Stress relaxation and morphological analyses also revealed changes in the W dispersion in the SBS matrix depending on the styrene content.

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Section: Resultsmentioning

confidence: 99%

Section: X-ray Transmission Post-irradiation Thermal Management and F...mentioning

confidence: 90%

Stress relaxation and thermal management in highly filled flexible styrene butadiene styrene copolymer‐tungsten composites for high‐energy radiation attenuation

et al. 2023

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“…The decrease in the bulk modulus (G′) under high strains is called the Payne effect which shows the process ability of rubbery composites 18 , 56 . In general, the presence of carbon black in the control sample was the main factor that caused increment in the bulk modulus (see Fig.…”

Section: Resultsmentioning

confidence: 99%

Synthesis of vinyl-based silica nanoparticles by sol–gel method and their influences on network microstructure and dynamic mechanical properties of nitrile rubber nanocomposites

Ghamarpoor

Jamshidi

2022

Sci Rep

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Non-agglomeration and dispersion of silica nanoparticles in polymers and their interfacial interactions to polymer matrix are the most important factors that influence nanocomposites performance. In this work, vinyltriethoxysilane (VTES) as a low VOC emission coupling agent was used for surface modification of silica nanoparticles to prepare better dispersion in nitrile rubber (NBR) and improve its interfacial interactions to silica nanoparticles. The results of X-ray photoelectron spectroscopy, thermogravimetric analysis and Fourier transform infra-red spectroscopy demonstrated successful attachment of VTES molecules on the surface of silica nanoparticles. Dispersion of the modified silica nanoparticles in NBR matrix was studied using field emission scanning electron microscopy and rubber process analysis. Results demonstrated that VTES significantly improved dispersion of nanoparticles in rubbery matrix. The bound rubber content showed that VTES effectively built a bridge between the silica nanoparticles and the rubber matrix that led to promising mechanical performances and strong interfacial interactions. Effect of nanoparticle content on the mechanical performances (static/dynamic) of the NBR was evaluated. It was found that higher modulus and reinforcement indices was obtained at 3 and 5 wt% of nanoparticles. Moreover, these composites had extremely low rolling resistance, the best wet skid resistance and the lowest Heat-Build up.

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“…Payne effect, [36][37][38] the characterization of the interaction between filler and rubber, is the difference of energy storage modulus under strain 0.56% and strain 100%. Figure 6 shows the shear modulus of unmodified SBR/Silica and modified SBR-g-HEA/Silica composites changing with strain.…”

Section: Payne Effect Analysis Of Different Sbr/silica Compositesmentioning

confidence: 99%

Reactive grafting of hydroxyethyl acrylate in styrene butadiene rubber: Characterization and its effect on silica reinforced tire composites

Liu

Hua

2023

J of Applied Polymer Sci

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Hydroxyethyl acrylate (HEA) was grafted onto styrene butadiene rubber (SBR) macromolecular chain by melt grafting method. Grafted structure was confirmed by Fourier transform infrared spectroscopy and 1 H spectra of nuclear magnetic resonance. In addition, the SBR-g-HEA/silica composites have been studied for their improved filler dispersion through hydrogen bonding interaction at the SBR/silica interface. SBR molecular chains and the silica interface was enhanced through coupling interaction at the hydroxyl modified SBR/ silica, at the same time. scanning electron microscope image of the cryo fractured surface of different SBR/silica composites and reduced Payne effect of rubber compound confirmed the silica particles have an even dispersion throughout the SBR matrix. The dynamic curves indicated the highest efficacy for wet and dry traction performances of SBR-g-HEA/silica composites comparing to unmodified reference sample. Meanwhile, the preparation of the composite does not need to add silane coupling agent to increase the capacity, there will be no volatile organic compounds produced by silanization reaction.Owing to the good properties such reduced energy and increased fuel efficiency, the SBR-g-HEA is an ideal eco-friendly material for green tire tread.

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Influence of coagents on Payne effect of butadiene rubber vulcanizates

Cited by 18 publications

References 83 publications

Stress relaxation and thermal management in highly filled flexible styrene butadiene styrene copolymer‐tungsten composites for high‐energy radiation attenuation

Stress relaxation and thermal management in highly filled flexible styrene butadiene styrene copolymer‐tungsten composites for high‐energy radiation attenuation

Synthesis of vinyl-based silica nanoparticles by sol–gel method and their influences on network microstructure and dynamic mechanical properties of nitrile rubber nanocomposites

Reactive grafting of hydroxyethyl acrylate in styrene butadiene rubber: Characterization and its effect on silica reinforced tire composites

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