Thermal and water ageing effect on mechanical, rheological and morphological properties of glass-fibre-reinforced poly(oxymethylene) composite

Kuram, Emel

doi:10.1177/0954408918770059

Cited by 9 publications

(6 citation statements)

References 30 publications

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“…35 Fluctuation in MFI with ageing was found and this could be caused by two competitive mechanisms between chain scission and crosslinking. 35,36 In thermal ageing of white type sunflower seed husk, pumpkin seed husk and hazelnut shell flour based PP composites, the chain scission might be dominant and thus, MFI values of these green composites increased. In thermal ageing of dakota type sunflower seed husk and pistachio shell flour based PP composites, the crosslinking/branching might be dominant leading to the drop in MFI.…”

Section: Resultsmentioning

confidence: 99%

UV and thermal weathering of green composites: Comparing the effect of different agricultural waste as fillers

Kuram

2020

Journal of Composite Materials

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In general, agricultural waste (residue) is left to nature or employed as fuel material in houses. However, such use of agricultural waste adversely affects the environment. To reduce the negative impact of agricultural waste on the environment, it can be utilized as natural filler in thermoplastic composites owing to its cellulosic structure. This research aims to determine ultraviolet (UV) and thermal ageing of natural fiber reinforced composites to investigate their potential of using in outdoor applications. Therefore, five kinds of agricultural waste were employed as natural fillers for fabricating polypropylene (PP) based composites in current research. Sunflower seed husk (dakota and white type), pumpkin seed husk, pistachio shell and hazelnut shell were utilized as natural fillers. Tensile behaviour of natural flour filled PP composites was characterized by a brittle failure. Though the natural fillers reduced the tensile and impact strength of pure PP, the mechanical properties were still acceptable for some applications and lower cost of natural filled PP composites made them feasible. It was concluded that sunflower seed husk (dakota and white type), pumpkin seed husk, pistachio shell and hazelnut shell flour filled PP composites could compete with pure PP when flexural strength was taken into consideration. Thus, more environmentally friendly composites with good flexural strength were developed. It was found that the influence of UV and thermal ageing on mechanical properties was not detrimental. In general, dakota type sunflower seed husk flour reinforcement gave the best mechanical properties among the natural composites, thus indicating better stress transfer.

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Section: Resultsmentioning

confidence: 99%

UV and thermal weathering of green composites: Comparing the effect of different agricultural waste as fillers

Kuram

2020

Journal of Composite Materials

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“…It is common that FRPs are used in structural applications where humid air and water environments are present, such as in offshore, wind energy, and oil and gas applications [2,6]. FRPs deteriorate over time in wet and humid conditions as hydrolytic degradation and environmental aging reduce their mechanical qualities [6][7][8][9][10]. Degradation effects typically accelerate with exposure to elevated temperature conditions [11].…”

Section: Introductionmentioning

confidence: 99%

“…Strength reductions were attributed to degradation effects occurring at the fiber matrix interphase. Later, Emel et al [8] investigated the aging behavior of glass fiber reinforced poly(oxymethylene) composite exposed to air or water at room temperature and in an oven at 100°C. For every aging environment, a decrease in tensile and flexural strength was observed, with samples aged in water experiencing the greatest strength loss.…”

Section: Introductionmentioning

confidence: 99%

Accelerated zero stress aging of glass, carbon, and basalt fibers- strength reduction explained by chemical and morphological analysis

Sunny,

Moreno,

Nazaripoor

et al. 2023

Progress in Canadian Mechanical Engineering. Volume 6

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Applications of fiber-reinforced polymer (FRP) composites have rapidly increased, specifically for structural applications in marine, offshore, and oil & gas industries. Understanding and predicting the extent of material property deterioration in water is of interest due to the uncertainty of the material interaction with the environment and integrity of such structures. Environmental endurance becomes a limiting factor in using composites for structural applications. While thermosetting matrices offer excellent resistance to water, moisture exposure may be a limiting factor in some thermoplastic composites. Moisture may therefore have a significant impact on the reinforcing elements and the rate of degradation. This effect becomes important with the aid of temperature as degradation accelerates. Therefore, the presented study investigates the effect of hydrothermal aging on glass, carbon, and basalt fibers with thermoplastic-compatible sizing. Mechanical testing was done to investigate the strength loss, whereas Fourier transform infrared spectroscopy and scanning electron microscopy was employed to understand the reactions leading to degradation.

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“…The effects of temperature on the properties of glass fiber-reinforced traditional polybutylene terephthalate (PBT) resin composites have been discussed by Mohd Ishak and Ishiaku, 16 Mohd Ishak and Karger-Kocsis, 17 and Kuram. 18 However, few investigations have reported the effect of elevated temperature on macroscopic mechanical behaviors of nanosilica-modified fiber-reinforced pCBT composites.…”

Section: Introductionmentioning

confidence: 99%

Temperature effect on the mechanical properties of GF/pCBT and its nanosilica-modified composites

Liang

Sun

Yang

et al. 2020

Journal of Thermoplastic Composite Materials

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Glass fiber/polymerized cyclic butylene terephthalate (GF/pCBT) and its nanosilica-modified thermoplastic composites were manufactured via vacuum-assisted molding pressing process. Subsequently, the effects of temperature and nanosilica fillers on the macroscopic mechanical behavior of glass fiber-reinforced pCBT composites were discussed. Failure morphologies of specimens were observed by scanning electron microscopy (SEM). Experimental results show that pure GF/pCBT composites have good mechanical properties, whereas their half-strength degradation temperature ( T S = 0.5) is relatively lower. It is also found that nanosilica-modified composites have higher heat resistance performance, and T S = 0.5 point of the modified composites enhanced by 10°C. SEM observations show that the smooth fracture surface in the broken composites appears at higher temperatures, which indicates that the toughness of nanosilica-modified GF/pCBT composites is improved.

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Thermal and water ageing effect on mechanical, rheological and morphological properties of glass-fibre-reinforced poly(oxymethylene) composite

Cited by 9 publications

References 30 publications

UV and thermal weathering of green composites: Comparing the effect of different agricultural waste as fillers

UV and thermal weathering of green composites: Comparing the effect of different agricultural waste as fillers

Accelerated zero stress aging of glass, carbon, and basalt fibers- strength reduction explained by chemical and morphological analysis

Temperature effect on the mechanical properties of GF/pCBT and its nanosilica-modified composites

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