Modified silica-based isoprene rubber composite by a multi-functional silane: Preparation and its mechanical and dynamic mechanical properties

Wang, Xuefei; Wu, Lingling; Yu, Haiwen; Xiao, Tongliang; Li, Huaming; Yang, Jun

doi:10.1016/j.polymertesting.2020.106840

Cited by 28 publications

(8 citation statements)

References 39 publications

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“…It could also be observed that the 8 wt% specimen exhibited lower viscous properties in comparison to the 16 wt% and 12 wt% specimens, which was almost similar tos pure silicone rubber after 164 • C. Pure silicone rubber, however, displayed a different behaviour where the loss modulus increased up to 124 • C and then continued to decrease gradually with the heating temperature. The decrease trend of silicone rubber also showed that the performance of the silicone rubber in dissipating the energy was almost similar to those of 4 wt% and 8wt% specimens after 124 • C. This might due to the lower mobility of molecular chains of the silicone rubber as the internal friction in between the filler-filler and filler-matrix is lower as compared to the 12 wt% and 16 wt% specimens [63][64][65].…”

Section: Dynamic Mechanical Analysis (Dma)mentioning

confidence: 67%

Morphological, Physical, and Mechanical Properties of Sugar-Palm (Arenga pinnata (Wurmb) Merr.)-Reinforced Silicone Rubber Biocomposites

et al. 2022

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The development of environmentally benign silicone composites from sugar palm fibre and silicone rubber was carried out in this study. The mechanical, physical, and morphological properties of the composites with sugar palm (SP) filler contents ranging from 0% to 16% by weight (wt%) were investigated. Based on the uniaxial tensile tests, it was found that the increment in filler content led to higher stiffness. Via dynamic mechanical analysis (DMA), the viscoelastic properties of the silicone biocomposite showed that the storage modulus and loss modulus increased with the increment in filler content. The physical properties also revealed that the density and moisture absorption rate increased as the filler content increased. Inversely, the swelling effect of the highest filler content (16 wt%) revealed that its swelling ratio possessed the lowest rate as compared to the lower filler addition and pure silicone rubber. The morphological analysis via scanning electron microscopy (SEM) showed that the sugar palm filler was evenly dispersed and no agglomeration could be seen. Thus, it can be concluded that the addition of sugar palm filler enhanced the stiffness property of silicone rubber. These new findings could contribute positively to the employment of natural fibres as reinforcements for greener biocomposite materials.

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Section: Dynamic Mechanical Analysis (Dma)mentioning

confidence: 67%

Morphological, Physical, and Mechanical Properties of Sugar-Palm (Arenga pinnata (Wurmb) Merr.)-Reinforced Silicone Rubber Biocomposites

et al. 2022

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“…This also demonstrates that the amount of active –OH bonds on the silica surface are effectively shielded by an appropriate amount of PEG. The variation of the peak shape at 2990, 2920 and 2860 cm −1 , which correspond to the asymmetrical stretching vibration and the symmetrical stretching vibration of methylene group [ 31 , 32 , 33 ], shows another confirmation of the appearance of different amounts of organic groups on the modified silica surface.…”

Section: Resultsmentioning

confidence: 95%

Synergistic Effect by Polyethylene Glycol as Interfacial Modifier in Silane-Modified Silica-Reinforced Composites

Han

Tin

et al. 2021

Polymers

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The viscoelastic behavior and reinforcement mechanism of polyethylene glycol (PEG) as an interfacial modifier in green tire tread composites were investigated in this study. The results show a clear positive effect on overall performance, and it significantly improved all the parameters of the “magic triangle” properties, the abrasion resistance, wet grip and ice traction, as well as the tire rolling resistance, simultaneously. For the preparation of the compounds, two mixing steps were used, as PEG 4000 was added on the second stage in order to avoid the competing reaction between silica/PEG and silanization. Fourier transform infrared spectroscopy (FTIR) confirmed that PEG could cover the silanol groups on the silica surface, resulting in the shortening of cure times and facilitating an increase of productivity. At low content of PEG, the strength was enhanced by the improvement of silica dispersion and the slippage of PEG chains, which are chemically and physically adsorbed on silica surface, but the use of excess PEG uncombined with silica in the compound, i.e., 5 phr, increases the possibility to shield the disulfide bonds of bis(3-(triethoxysilyl)-propyl) tetrasulfide (TESPT), and, thus, the properties were deteriorated. A constrained polymer model was proposed to explain the constrained chains of PEG in the silica-loaded composites on the basis of these results. An optimum PEG content is necessary for moderately strong matrix–filler interaction and, hence, for the enhancement in the mechanical properties.

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“…Thus, the presence of chemical interaction of polyfunctional macromolecules SKI-3-PVA and HCPX in the presence of epoxy compounds and zinc oxide under thermal and thermomechanical effects was established. It is known that the stitching of isoprene rubber (SKI-3) by chlorine-containing compounds is activated by metal oxides [16,17]. We have studied the effect of heating time on the content of total and bound chlorine in samples containing HCPX and ZnO, and calculated stitched HCPX molecules per crosslink (Table 3).…”

Section: Resultsmentioning

confidence: 99%

Features of the Structure and Properties of Compositions of Modified Isoprene Rubber With Chloride-Containing and Epoxy Compounds

Mammadov¹,

Rahimova²,

Khankishiyeva³

et al. 2023

AChJ

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The effect of HCPX and EC as a stitching agent during thermal vulcanization of modified isoprene rubber (SKI-3- PVA) 80:20 in the presence of zinc oxide was studied. Studies of structural changes occurring in vulcanizates based on SKI-3-PVA under the influence of heating have been carried out. Based on the data of IR spectroscopy and the gel fraction, the rate of reactions with hexachloroparaxylenes (HCPX) between the studied low molecular weight compounds was studied. Considerations are made about the nature of the vulcanization action of the studied structuring systems and the features of their influence on the parameter of the spatial network and the physical and mechanical properties of vulcanizates. The effect of heating time on the content of total and combined chlorine in samples containing HCPX and ZnO was studied. The number of stitched HCPX molecules per cross-link was calculated

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Modified silica-based isoprene rubber composite by a multi-functional silane: Preparation and its mechanical and dynamic mechanical properties

Cited by 28 publications

References 39 publications

Morphological, Physical, and Mechanical Properties of Sugar-Palm (Arenga pinnata (Wurmb) Merr.)-Reinforced Silicone Rubber Biocomposites

Morphological, Physical, and Mechanical Properties of Sugar-Palm (Arenga pinnata (Wurmb) Merr.)-Reinforced Silicone Rubber Biocomposites

Synergistic Effect by Polyethylene Glycol as Interfacial Modifier in Silane-Modified Silica-Reinforced Composites

Features of the Structure and Properties of Compositions of Modified Isoprene Rubber With Chloride-Containing and Epoxy Compounds

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