Multi-layer graphene oxide synergistically modified by two coupling agents and its application in reinforced natural rubber composites

The fracture and fatigue resistance of graphene oxide reinforced natural rubber composites which were prepared by latex co-coagulation was investigated.

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Comparison of Mechanical Properties and Curing Characteristics of Natural Rubber Composites with Different Coupling Agents

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.858.24 ◽

2013 ◽

Vol 858 ◽

pp. 24-31 ◽

Cited By ~ 2

Author(s):

Makara Lay ◽

Azura A. Rashid ◽

Nadras Othman ◽

Yasuyuki Tezuka ◽

Chhorda Pen

Keyword(s):

Mechanical Properties ◽

Natural Rubber ◽

Crosslink Density ◽

Coupling Agents ◽

Rubber Composites ◽

Matrix Interaction ◽

Curing Characteristics ◽

Natural Rubber Composites ◽

Silane Coupling ◽

Colored Product

Nanosilica (NS) was recently used as a filler to improve mechanical properties, morphology behaviors of natural rubber (NR) composites and also for light colored product. NS is hard to disperse in NR composite compare to carbon black due to large number of Silanol (Si-OH) group leads to strong filler-filler interaction. Silane coupling agent was extensively used to improve reinforce efficiency of NS and also for good filler-matrix interaction by reducing Si-OH group. In this study, Bis[3-(triethoxysilyl)propyl] tetrasulfide (Si-69) and (3-aminopropy)triethoxysilane (APTES) were used as a coupling agents with various loading 1.5, 3, 4.5 phr in conventional sulphur vulcanization system. Both Si69 and APTES gave a significance of the NR compound processing. However, hardness was gradually decreased up to 4.5 phr due to plasticizing effect. Si-69 can increase crosslink density because of 4 molecular of sulphur (S) and its structure retarded the curing where APTES accelerated the cured because APTES has lower molecular weight and viscosity than Si-69.

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Synergistic effect of graphene with graphene oxide, nanoclay, and nanosilica in enhancing the mechanical and barrier properties of bromobutyl rubber/epoxidized natural rubber composites

Journal of Applied Polymer Science ◽

10.1002/app.50746 ◽

2021 ◽

pp. 50746

Author(s):

T. R. Aswathy ◽

Biswaranjan Dash ◽

Pranab Dey ◽

Sujith Nair ◽

Kinsuk Naskar

Keyword(s):

Graphene Oxide ◽

Synergistic Effect ◽

Natural Rubber ◽

Barrier Properties ◽

Epoxidized Natural Rubber ◽

Rubber Composites ◽

Natural Rubber Composites

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Electrical Properties of Graphene Filled Natural Rubber Composites

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.812.263 ◽

2013 ◽

Vol 812 ◽

pp. 263-266 ◽

Cited By ~ 7

Author(s):

Yaragalla Srinivasarao ◽

Yahaya Subban Ri Hanum ◽

Chin Han Chan ◽

Kalarikkal Nandakumar ◽

Thomas Sabu

Keyword(s):

Dielectric Constant ◽

Graphene Oxide ◽

Natural Rubber ◽

Conductivity Data ◽

Rubber Composites ◽

Melt Mixing ◽

Electrical Percolation ◽

Natural Rubber Composites ◽

Reduced Graphene ◽

Mixing Method

Thermally reduced graphene oxide (graphene) filled natural rubber (NR) composites were fabricated by melt mixing method. Dielectric constant, dielectric loss and a.c conductivity data of the NR composites are reported. Highest conductivity of 3 x 10-4 S/m was obtained for the composite with 3 wt. % graphene with initial electrical percolation at a loading of 0.5 wt. %. High conductivity in the composite with 3 wt. % graphene is accounted by its homogeneity as observed in SEM micrographs.

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Enhanced Fatigue and Durability Properties of Natural Rubber Composites Reinforced with Carbon Nanotubes and Graphene Oxide

Materials ◽

10.3390/ma13245746 ◽

2020 ◽

Vol 13 (24) ◽

pp. 5746

Author(s):

Hao Guo ◽

Peizhi Ji ◽

István Zoltán Halász ◽

Dávid Zoltán Pirityi ◽

Tamás Bárány ◽

...

Keyword(s):

Carbon Nanotubes ◽

Graphene Oxide ◽

Natural Rubber ◽

Fatigue Properties ◽

Rubber Composites ◽

Durability Properties ◽

Natural Rubber Composites ◽

Fibrous Carbon ◽

Filler Network ◽

Crack Growth Rates

Fibrous carbon nanotubes (CNTs) and lamellar graphene oxide (GO) exhibit significant advantages for improving the fatigue properties of rubber composites. In this work, the synergistic effect of CNTs and GO on the modification of the microstructure and fatigue properties of natural rubber (NR) was comprehensively investigated. Results showed that CNTs and GO were interspersed, and they formed a strong filler network in the NR matrix. Compared with those of CNT/NR and GO/NR composites, the CNT-GO/NR composites showed the smallest crack precursor sizes, the lowest crack growth rates, more branching and deflections, and the longest fatigue life.

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