Mechanical properties of short‐isora‐fiber‐reinforced natural rubber composites: Effects of fiber length, orientation, and loading; alkali treatment; and bonding agent

Mathew, Lizzy; Joseph, Rani

doi:10.1002/app.25065

Cited by 74 publications

(57 citation statements)

References 30 publications

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“…At present, short fibres reinforced composites are often made with conventional techniques, including single or twin screw extruding (Li et al 2005), wet ball-milling mixing (Song et al 2002) and high-speed mechanical mixing methods (Mathew and Joseph 2007). However, the shear stresses exerted by screw or vane usually result in fibre aggregation or breakage (Fu et al 2001;Liu and Liao 2004;Grande and Torres 2005), which is unfavourable to obtain reasonable microstructure and excellent mechanical properties.…”

Section: Introductionmentioning

confidence: 98%

Effects of fibre content on mechanical properties and fracture behaviour of short carbon fibre reinforced geopolymer matrix composites

et al. 2009

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Geopolymer matrix composites reinforced with different volume fractions of short carbon fibres (C f /geopolymer composites) were prepared and the mechanical properties, fracture behaviour and microstructure of as-prepared composites were studied and correlated with fibre content. The results show that short carbon fibres have a great strengthening and toughening effect at low volume percentages of fibres (3⋅5 and 4⋅5 vol.%). With the increase of fibre content, the strengthening and toughening effect of short carbon fibres reduce, possibly due to fibre damage, formation of high shear stresses at intersect between fibres and strong interface cohesion of fibre/matrix under higher forming pressure. The property improvements are primarily based on the network structure of short carbon fibre preform and the predominant strengthening and toughening mechanisms are attributed to the apparent fibre bridging and pulling-out effect.

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Section: Introductionmentioning

confidence: 98%

Effects of fibre content on mechanical properties and fracture behaviour of short carbon fibre reinforced geopolymer matrix composites

et al. 2009

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“…A slight decrease in the tensile strength, from 17 to 15 MPa, was observed on the addition of 10 phr of fibers to the natural rubber. Other [31][32][33] have also shown a reduction in both the tensile strength and elongation at break when raw and treated natural fibers were added to natural rubber. However, in this work, the values of elongation at break were not affected by the increasing quantity of fibers.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

“…These results corroborate those reported in the literature 32,34 , which indicate that the use of natural fibers as a reinforcement in natural rubber matrices increases the tensile modulus; this may be indicative of the excellent interactions between the fiber surface and the natural rubber matrix. 32,33 …”

Section: Mechanical Propertiesmentioning

confidence: 99%

The Influence of Bleached Jute Fiber Filler on the Properties of Vulcanized Natural Rubber

2017

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There is growing interest in replacing the synthetic reinforcements used for natural rubber (NR) composites with natural fibers from renewable, environmentally sustainable sources. Jute fibers may be suitable reinforcements for NR because they have a high tensile strength, which is comparable to other fillers such as glass fibers. Thus, we studied the incorporation of bleached jute fibers into NR, characterizing the mechanical, dynamic mechanical, and morphological properties of the composites. The addition of fibers to the NR latex was achieved by chemical coagulation, followed by vulcanization in a laboratory two-roll mixing mill. The elastic modulus at 100 and 300% elongation of the NR doubled after the addition of 10 phr of fibers without significant loss in the tensile strength or the elongation at break. The hardness was increased by 47%, and the storage modulus also increased, indicating the excellent interactions between the surfaces of the fibers and the NR matrix.

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“…The efficiency of stress transfer is higher if the fibers are oriented parallel to the direction of application of force [32]. The tensile properties of a 10 phr loaded composites in longitudinal (L) and transverse (T) directions as a function of fiber length is shown in Table 6.…”

Section: (B) Effect Of Fiber Orientationsmentioning

confidence: 99%

Exploring a novel multifunctional agent to improve the dispersion of short aramid fiber in polymer matrix

Shibulal¹,

Naskar²

2012

Express Polym. Lett.

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Abstract.Composites based on resorcinol formaldehyde latex (RFL) coated aramid short fiber and a polyolefin based thermoplastic elastomer, namely ethylene octene copolymer (EOC) were prepared by melt mixing technique. The effects of both fiber loading and its length on the mechanical and thermal characteristics of the composite under natural and sheared conditions were investigated. Both the low strain modulus and Young's modulus were increased as a function of fiber loading and length. However, thermal stability of the composite was found to enhance with increase in fiber loading and was independent of fiber length. Due to poor interfacial interaction between the fiber and the matrix and the formation of fiber aggregation especially with 6 mm fiber at high loading, the elongation and toughness of the composite were found to decrease drastically. In order to solve this problem, a maleic anhydride adducted polybutadiene (MA-g-PB) was applied on the aramid fiber. The improvements in tensile strength, elongation at break, toughness to stiffness balance and a good quality of fiber dispersion especially with 6 mm short fiber were achieved. These results indicate the potential use of maleic anhydride adducted PB as a multifunctional interface modifying coupling agent for the aramid short fiber reinforced polymers to enhance the mechanical properties as well as fiber dispersion. FTIR analyses of the treated fiber and SEM analyses of the tensile fractured surfaces of the composite strongly support and explain these results.

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Mechanical properties of short‐isora‐fiber‐reinforced natural rubber composites: Effects of fiber length, orientation, and loading; alkali treatment; and bonding agent

Cited by 74 publications

References 30 publications

Effects of fibre content on mechanical properties and fracture behaviour of short carbon fibre reinforced geopolymer matrix composites

Effects of fibre content on mechanical properties and fracture behaviour of short carbon fibre reinforced geopolymer matrix composites

The Influence of Bleached Jute Fiber Filler on the Properties of Vulcanized Natural Rubber

Exploring a novel multifunctional agent to improve the dispersion of short aramid fiber in polymer matrix

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