Study on Dispersion Morphology of Silica in Rubber

Li, Yingbing; Wang, M. J.; Zhang, Tao; Zhang, Fenhou; Xi-mei, FU

doi:10.5254/1.3538704

Cited by 89 publications

(52 citation statements)

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“…[10,11] The modification of silica surface with organosilanes helps to overcome this problem. In particular, bis-triethoxysilylpropyltetrasulfane (TESPT) is the most commonly used in the tyre industry since it has ethoxy groups that can bond to silica surface and sulphur atoms that can react with elastomer chains.…”

Section: Full Papermentioning

confidence: 99%

Morphology and Viscoelastic Behaviour of a Silica Filled Styrene/Butadiene Random Copolymer

Conzatti

Costa

Castellano

et al. 2008

Macro Materials & Eng

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An investigation into styrene‐butadiene rubber and styrene‐butadiene rubber/butadiene rubber composites was conducted, aimed at investigating the influence of surface modification of silica on polymer‐filler interactions. Two silanes, bis‐triethoxysilylpropyltetrasulfane and octadecyltriethoxysilane, were used as surface modifiers. A morphological investigation by transmission electron microscopy and automated image analysis provided a quantitative evaluation of the filler distribution in the rubber matrix by using morphometric descriptors, such as projected area, perimeter and area/perimeter ratio. The better dispersion of the surface‐modified silica nicely relates with the improved dynamic‐mechanical and tensile properties and accounts for the higher critical concentration necessary to the formation of the secondary network, thus confirming that the surface modification reduces filler‐filler and enhances polymer‐filler interactions.

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Section: Full Papermentioning

confidence: 99%

Morphology and Viscoelastic Behaviour of a Silica Filled Styrene/Butadiene Random Copolymer

Conzatti

Costa

Castellano

et al. 2008

Macro Materials & Eng

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“…3 These interactions lead to the formation of secondary structures (aggregates and agglomerates) that cannot be easily broken. 4,5 As it is well known, this fact reduces not only the dispersion of the silica particles into rubber matrix, but also the interactions created between the filler particles and the rubber matrix, causing a wear reinforcing effect. 6 Several studies have shown that the surface modification of silica during processing and vulcanization processes using bifunctional coupling agents improves the silica dispersion and therefore increases the physical properties of rubber compounds filled with modified silica.…”

Section: Introductionmentioning

confidence: 99%

Effect of oleyl amine on SBR compounds filled with silane modified silica

Valentín

Mora-Barrantes

Rodrı́guez

et al. 2006

J of Applied Polymer Sci

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The effect of oleyl amine on processing and physical properties of SBR compounds filled with silanesilica particles has been evaluated. Two different types of silane molecules have been used as coupling agents to minimize the silica-silica interactions and reduce the formation of secondary structures of silica, in addition with an increment in the filler-rubber interactions. Significant differences between those compounds have been found according with the silane structure. However, in both cases, the dynamic, rheological, and mechanical properties of the filled rubber compounds were improved after the incorporation of oleyl amine molecules. This fact could be related with the capacity of the amine molecules to interact with the free silanol groups of silane-modified silica forming an amine-modified silica complex, which reduces the hydrophilic nature of the silica surface.

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“…More recently, silica was found to exert a higher reinforcement on elastomers and to improve the tyre durability and is now used in place of carbon black filler. 2 However, precipitated silica possesses a number of surface hydroxyl groups, 3,4 therefore, owing to the possibility of formation of strong intermolecular hydrogen bonds, it can aggregate 5,6 with a consequently poorer dispersion of the silica particles in the rubber. The way to avoid aggregation is to improve the compatibility between silica and rubber in order to reduce silica migration.…”

Section: Introductionmentioning

confidence: 99%