Effects of resin inside fiber lumen on the mechanical properties of sisal fiber reinforced composites

Li, Yan; Ma, Hui; Shen, Yiou; Li, Qian; Zheng, Zhuoyuan

doi:10.1016/j.compscitech.2015.01.003

Cited by 69 publications

(27 citation statements)

References 23 publications

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“…However, the hydroxyl stretching band of the ramie fibers impregnated by PA650 and the mixture of CMC/PA650 are broadened toward lower frequency, illustrating the formation of hydrogen bonding network . Formation of hydrogen bond in the interphase of composites is useful to improve interface adhesion strength and reduce water absorption .…”

Section: Resultsmentioning

confidence: 99%

“…Mechanical property of natural fiber‐reinforced polymer composites has attracted considerable attention in recent years . Mechanical properties of fiber‐reinforced polymer matrix composites are largely depends on the quality of bonding between the fiber and matrix , strong adhesion between natural fiber and matrix leads to improved load transfer from the matrix to the fiber which results in greater composite stiffness and strength.…”

Section: Introductionmentioning

confidence: 99%

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Cellulose microcrystal improved interphase of ramie fiber‐reinforced epoxy resin composites

et al. 2017

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This article investigated the effect of cellulose microcrystal (CMC) and low molecular polyamide (PA650) on the mechanical and water absorption properties of ramie fiber‐reinforced epoxy composites. Results showed that coating mixture of CMC and PA650 (CMC/PA650) on the surface of ramie fiber improved the interfacial adhesion strength of ramie fiber/epoxy composites. As a result, the flexural strength, flexural modulus, and interlaminar shear strength of PA650/CMC‐coated ramie fabric‐reinforced epoxy composites (CPRFC) were 10.6%, 8.1%, and 7.4% higher than those of ramie fabric without coating reinforced epoxy composites (RFC). Additionally, saturated water absorption of CPRFC was reduced by 40.5% and 31.5% than that of RFC and PRFC, it seems that a water‐resistant interphase exists in the CPRFC and it is more efficient at the early stage of water immersion. However, without filling of CMC in PA650, lowest flexural modulus and highest flexural strain of the composites were found. POLYM. COMPOS., 39:E2207–E2216, 2018. © 2017 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cellulose microcrystal improved interphase of ramie fiber‐reinforced epoxy resin composites

et al. 2017

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“…The SEM micrograph of fibre-matrix surface interaction of tensile tested samples fractured surfaces at 120x to 500x magnifications But, for 1:6 coated sample, the surface interaction is better since the matrix appeared to be efficiently attached to the fibre without any gap formation. It might be due to the effect of the existence of thin coating layer that altered the fibres to become hydrophobic polarity similar to the polarity of the matrix that led to better interaction between coted fibre and matrix in the composites system as agreed by Yan [13]. Nevertheless, from the micrograph, it noticed that both 1:4 and 1:6 samples experience a fibre pull-out failure.…”

Section: Tensile Propertiesmentioning

confidence: 87%

The effect of viscosities of various coating solutions on the physical, mechanical and morphological properties of kenaf/epoxy composites

2020

Biointerface Res Appl Chem

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Coating treatment is a new method to improve the overall properties of natural fibres. However, recent research paying less attention to the effects of coating solution viscosities towards the coating behaviour inside the fibres embedded in the composite system. Thus, this study explores the effects of coating domination to the deformation of the composite from the analysis of coating uptake, maximum tensile modulus and the Poisson’s ratio. The samples were prepared by dipping the fibres in 1:4, 1:5 and 1:6 coating solutions, cured and pulverised prior moulded and tensile tested. The result shows that 1:6 coated fibre is the best since it improves about 40.1 % of coating uptake, 23.8-31.4 % of maximum tensile modulus with highest Poisson’s ratio of composites properties. It also supported by its scanning electron micrograph as better fibre-matrix interaction was observed. The high coating penetration in the structure of the fibre might change the fibres natural polarity and improves the fibre-matrix interaction to reduce the deformation of the composite to give a stiff composites property. Conclusively, the optimum coating solution is needed since it influences the fibres coating behaviour to control the deformation of the composites.

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“…For the laminates containing flax fibre, the void content can partly be explained by water in the natural fibres. Generally, also the processing parameters during the laminate manufacturing have an impact on the void content [36]. The micrographs in Figure 6 indicate the relatively low fibre volume content of approximately 30% for all tested laminates, visible by major areas of epoxy resin.…”

Section: Manufacturing Of the Compositesmentioning

confidence: 97%

Section: Manufacturing Of the Compositesmentioning

confidence: 99%

Flexural Mechanical Properties of Hybrid Epoxy Composites Reinforced with Nonwoven Made of Flax Fibres and Recycled Carbon Fibres

2018

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Can a hybrid composite made of recycled carbon fibres and natural fibres improve the flexural mechanical properties of epoxy composites compared to pure natural fibre reinforced polymers (NFRP)? Growing environmental concerns have led to an increased interest in the application of bio-based materials such as natural fibres in composites. Despite their good specific properties based on their low fibre density, the application of NFRP in load bearing applications such as aviation secondary structures is still limited. Low strength NFRP, compared to composites such as carbon fibre reinforced polymers (CFRP), have significant drawbacks. At the same time, the constantly growing demand for CFRP in aviation and other transport sectors inevitably leads to an increasing amount of waste from manufacturing processes and end-of-life products. Recovering valuable carbon fibres by means of recycling and their corresponding re-application is an important task. However, such recycled carbon fibres (rCF) are usually available in a deteriorated (downcycled) form compared to virgin carbon fibres (vCF), which is limiting their use for high performance applications. Therefore, in this study the combination of natural fibres and rCF in a hybrid composite was assessed for the effect on flexural mechanical properties. Monolithic laminates made of hybrid nonwoven containing flax fibres and recycled carbon fibres were manufactured with a fibre volume fraction of 30% and compared to references with pure flax and rCF reinforcement. Three-point bending tests show a potential increase in flexural mechanical properties by combining rCF and flax fibre in a hybrid nonwoven.

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Effects of resin inside fiber lumen on the mechanical properties of sisal fiber reinforced composites

Cited by 69 publications

References 23 publications

Cellulose microcrystal improved interphase of ramie fiber‐reinforced epoxy resin composites

Cellulose microcrystal improved interphase of ramie fiber‐reinforced epoxy resin composites

The effect of viscosities of various coating solutions on the physical, mechanical and morphological properties of kenaf/epoxy composites

Flexural Mechanical Properties of Hybrid Epoxy Composites Reinforced with Nonwoven Made of Flax Fibres and Recycled Carbon Fibres

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