Preparation and characterization of an epoxy nanocomposite toughened by a combination of thermoplastic, layered and particulate nano-fillers

Mirmohseni, Abdolreza; Zavareh, Siamak

doi:10.1016/j.matdes.2010.01.035

Cited by 101 publications

(53 citation statements)

References 25 publications

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“…ANOVA identifies the content of each input variable and was used to determine the control parameters effect on the buckling strength of the laminated composites. 12,34 One of the most important steps in the Taguchi design is selecting the controllable factors. In this study, the three controllable parameters, as told above, were selected according to Table 1 to optimize the input parameters to achieve the highest buckling strength of new quaternary nanocomposite.…”

Section: Design Of Experimentsmentioning

confidence: 99%

“…Also, the minimum buckling force occurred at level 16 with the value of 147 N. The aim of this research is enhancement of the buckling strength of the laminates, so the larger response is the desired answer according to the Taguchi method with the use of S/N ratio as defined in equation (1). 23,34 The S/N ratio in the Taguchi method is measured by the deviation of a characteristic from its target value (Figure 3). 25 Table 6 shows the ANOVA results for S/N ratio.…”

Section: S/n Ratio Analyses For Optimization Of Quaternary Nanocompositementioning

confidence: 99%

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The buckling strength of the new hybrid nanocomposite laminates using combination of layered and particulate nano fillers

Rostamiyan

Azadi

2016

Advances in Mechanical Engineering

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This article experimentally investigates the buckling strength of carbon fiber-reinforced polymer laminates. Samples were made with 16 layers of carbon fibers in four orientations of 0°, 30°, 60°, and 90°. Nano silica (SiO 2 ) and nano clay were used as fillers for enhancement of the buckling strength of carbon fiber-reinforced polymer laminates. The Taguchi method was used for design of experiments and optimizing the three input factors: nano silica, nano organoclay, and carbon fiber orientation. From the results, first, it was found that the most buckling strength belonged to the samples with the fiber orientation of 0°and the minimum strength belonged to the composite laminates with the 90°orientation of carbon fiber. Second, the use of two nano fillers in quaternary laminates (epoxy/carbon fiber/silica/clay) has increased the buckling strength of laminates about 45.5% and 22.5% in comparison with binary and ternary laminates, respectively. The binary laminates were made from carbon fiber/epoxy resin and the ternary laminates included carbon fiber/clay/epoxy. Third, the elastic modulus of laminates increased with an increase in the nano SiO 2 content. The most effective parameters according to the analysis of variance results were as follows: carbon fiber orientation, nano silica, and nano organoclay, with a probability value of 99%, 95%, and 90%, respectively. Finally, the analytical analysis was done according to the classical laminated plate theory for obtaining the buckling force and verifying and comparing the results with experimental buckling tests. The results obtained from classical laminated plate theory for two certain laminates were in excellent agreement with those obtained from experimental results.

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Section: Design Of Experimentsmentioning

confidence: 99%

Section: S/n Ratio Analyses For Optimization Of Quaternary Nanocompositementioning

confidence: 99%

The buckling strength of the new hybrid nanocomposite laminates using combination of layered and particulate nano fillers

Rostamiyan

Azadi

2016

Advances in Mechanical Engineering

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“…또한 섬유의 배열을 평가하기 위한 방법이 필요하다. 1.2 cm의 길이를 가지는 섬유에 대 해서 분포 정도를 X-ray방법으로 확인하는 연구결과도 있지만 [18], 고가의 장비를 이용한 분석법 이외에 쉽게 강화재의 분포를 평가할 수 있는 방법이 필요하며, 전 기저항 측정법을 이용하여 기지 내 섬유의 배열 정도 를 평가하는 간단한 평가방법도 연구되고 있다 [19,20] Figure 1은 사출 단계에 금형의 전기저항 변화도변 화를 관찰하기 위한 모식도와 금형에 전극을 형성시 킨 사진을 나타낸 결과이다. 참 고 문 헌…”

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Evaluation of Fiber Arrangement Condition of CF/PP Composites Using Electrical Resistance Measurement and Wettability

Kwon¹,

Shin²,

Kim³

et al. 2016

Adhesion and Interface

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Fiber arrangement was important for fiber reinforced thermoplastic composites using injection fabrication. In this work, fiber arrangement in CF/PP was investigated to use electrical resistance (ER) method during injection times. There were 3 types of injection products of CF/PP with different ER change ratio by fiber arrangement. High ER change ratio case of injection CF/PP products had better increased tensile strength. This reason was due to the fiber arrangement of CF/PP by injection. Fractured surface and contact angle of CF/PP products were used to evaluate for injection product quality. Uniform fiber arrangement of CF/PP by injection type exhibited the uniform heat condition of melted CF/PP. Steady thermal transfer effect occurred from melted CF/PP to steel injection mold. Steady thermal transfer effect of CF/PP was transmitted to high ER change ratio of mold. Ultimately, good condition CF/PP product by injection molding method could be predicted by using ER method.

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“…The workflow for the Taguchi experimental design involves: (1) determining the number of levels for each of the parameters selected; (2) selecting the appropriate orthogonal array and arranging the operating parameters in the 4) analyzing the experimental results using the signal-to-noise ratio (S/N) and analysis of variance (ANOVA) [19].…”

Section: Experimental Designmentioning

confidence: 99%

Effects of dopant, coagulant, and reinforcing nanofiller on mechanical and electrical properties of wet-spun polyaniline nanocomposite fibers

Mirmohseni

Dorraji

2012

J Polym Res

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This paper describes the application of Taguchi experimental design to study the simultaneous effects of the dopant, the coagulant, and multiwalled carbon nanotubes (MWCNTs) used as reinforcing filler on the properties (tensile strength and electrical conductivity) of polyaniline (PANI) nanocomposite fibers produced via a wet spinning process. The MWCNT content was found to be the most significant factor, accounting for 72.8 % of the total contribution of the three selected parameters to the tensile strength. The dopant contributed 17.6 %, while the coagulant had a negligible effect and was therefore pooled. MWCNT content provided the maximum contribution of 98 % to the electrical conductivity, whereas the dopant and the coagulant had negligible effects, with contributions of 0.021 % and 0.247 %, respectively. A scanning electron microscope (SEM) and a tapping-mode atomic force microscope (AFM) were employed to study the morphology of the fibers. The electrochemical and pseudocapacitive properties of the fibers were investigated using cyclic voltammetry (CV). The PANI-AMPSA-MWCNT presented a specific capacitance value of 12.8 F cm −2 . The thermal characteristics of the nanocomposite fibers were studied using thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). Elemental analysis of the fibers showed a high degree of doping: about 47-55 %.

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Preparation and characterization of an epoxy nanocomposite toughened by a combination of thermoplastic, layered and particulate nano-fillers

Cited by 101 publications

References 25 publications

The buckling strength of the new hybrid nanocomposite laminates using combination of layered and particulate nano fillers

The buckling strength of the new hybrid nanocomposite laminates using combination of layered and particulate nano fillers

Evaluation of Fiber Arrangement Condition of CF/PP Composites Using Electrical Resistance Measurement and Wettability

Effects of dopant, coagulant, and reinforcing nanofiller on mechanical and electrical properties of wet-spun polyaniline nanocomposite fibers

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