Mechanical Properties of Polyester Resins in Saline Water Environments

Nácher, Lourdes Sánchez; Amorós, José Enrique Crespo; Moya, Ma Dolores Salvador; Martínez, Juan López

doi:10.1080/10236660701516557

Cited by 24 publications

(8 citation statements)

References 35 publications

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“…Properties such as renewability, biodegradability, high filling effect, light weight, easy availability, nonabrasiveness, acceptable specific strength properties, ease of separation, enhanced energy recovery, noncorrosive nature, high toughness, low cost, good thermal properties, reduced tool wear, and reduced dermal and respiratory irritation provide attractive ecofriendliness to the resulting natural fibrous materials. [10][11][12] Efforts have been made by various researchers to substitute synthetic fiber with biodegradable natural fiber to effectively use these natural fibers in a number of applications, especially in polymer composite materials. [13][14][15] In fact, several studies reporting natural fiber-reinforced polymer composites have shown that the incorporation of lignocellulosic natural fibers improves the mechanical properties of the polymer matrices.…”

Section: Introductionmentioning

confidence: 99%

Morphological, Thermal, and Physicochemical Characterization of Surface ModifiedPinusFibers

Singha

Thakur

2009

International Journal of Polymer Analysis and Characterization

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In recent years, interest in using natural fibers in a number of applications especially in biocomposites has grown because they are ecofriendly, lightweight, combustible, nontoxic, low cost and easy to recycle. On the other hand, the lack of good interfacial adhesion and poor resistance to moisture absorption and chemicals make the use of natural fibers less attractive. Chemical treatment of the lignocellulosic fiber can stop the moisture absorption process, clean the fiber surface, chemically modify the surface or increase the surface roughness. Silane treatment of natural fibers is a promising process for improving physical and chemical properties of fibers. The work presented in this article gives insight into the effect of silane treatment on physical and chemical properties of Pinus fibers. Further polymer composites were prepared using urea-formaldehyde as a novel polymer matrix resin. The silane-treated and untreated fibers along with polymer composites have been characterized by various techniques such as scanning electron microscopy (SEM), Fourier transform-infrared spectrophotometry (FT-IR) and thermogravimetric/differential thermal analysis along with DTG studies. Composites prepared were also subjected to the evaluation of different mechanical, physical, and chemical properties.

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Section: Introductionmentioning

confidence: 99%

Morphological, Thermal, and Physicochemical Characterization of Surface ModifiedPinusFibers

Singha

Thakur

2009

International Journal of Polymer Analysis and Characterization

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“…time (iii) Curing rate of resin (iv) Type of polymer (v) Type of Reinforcement (vi) Treatment of fiber (vii) Filler content loading and (viii) diffusion coefficients etc. [37][38][39].…”

Section: Degradation Of Properties Of Hybrid Polymer Composites In LImentioning

confidence: 99%

A review on the degradation of properties under the influence of liquid medium of hybrid polymer composites

et al. 2020

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Hybrid polymer composites are more attractive because of their light in weight, more robust and rigid (in the direction of fiber) than traditional or unreinforced polymers with the added advantage of having their design and form adapted to suit the specifications of a particular application by the combination of the right choice of the materials. Reinforcement in a polymer hybrid composite can be fiber, filler, or fiber& filler together. Integrating reinforcement into polymers can lead to significant growth in the wear characteristics and mechanical properties of the polymer. Nevertheless, in applications wherever interaction by the liquid medium is inevitable, the mechanical properties and wear characteristics of hybrid polymer composites undergo degradation, which is a generally seen phenomenon since liquid medium acts as a plasticizer. This study aims to provide detailed information on the mechanical and tribological effects of hybrid polymer composites. More emphasis is given towards degradation of mechanical properties such as tensile strength, bending strength, and degradation of wear characteristics like erosion wear rate, and respective failure characteristics were analyzed under different environments such as water, kerosene, saline, sub-zero conditions.

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“…48 Most importantly, the ester group at the chain ends of the polymer matrix is susceptible to undergo hydrolysis reaction which causes chain scissioning of cross-linked network of the polymers, resulting in poor load transferring efficiency between the matrix and the fiber. 50 In addition, glass fibers also undergo degradation during hygrothermal aging due to the leaching of alkali oxides from glass fiber surface and may lead to the formation of surface micro-cracks which can act as stress concentrators, thus weakening the fiber strength. 46 The influence of salt and pore solution was more destructive as compared to water aging.…”

Section: Effect Of Aging On Interlaminar Shear Strength Of Cipp Linersmentioning

confidence: 99%

Influence of aggressive environmental aging on mechanical and thermo-mechanical properties of Ultra Violet (UV) Cured in Place Pipe liners

Nuruddin¹,

DeCocker²,

Sendesi³

et al. 2020

Journal of Composite Materials

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Ultraviolet light cured-in-place pipe is a popular trenchless rehabilitation technology used to repair existing buried pipelines without soil excavation. A polymer composite liner is manufactured directly in the field. After curing is complete, the new liner is placed in service to convey flowing water. Long-term water exposure has the potential to degrade the fiber reinforced cured-in-place pipe liners. Like other composites, liner hygrothermal stability could be a major challenge, especially for undercured materials. The objective of this study was to investigate the effect of aggressive environmental conditions such as water, salt solution, and simulated concrete pore solution at 50℃ on cured-in-place pipe liner mechanical and thermo-mechanical performance. Liners were exposed to aqueous solutions ranging from a typical exposure environment to a very aggressive alkaline environment. Cured-in-place pipe liner samples were collected from New York storm sewer installation sites. Specimens were assessed for the degree of curing as determined by differential scanning calorimetry and TGA. Samples were then immersed in aforementioned solutions for investigating the stability of the liners as a function of degree of cure. Both interlaminar shear strength and thermo-mechanical properties significantly differed based on the degree of cure. Cured-in-place pipe liner mechanical and thermo-mechanical properties were significantly impacted by water, salt, and pore solutions exposure. Long-term exposure to salt and alkaline environments may have a detrimental effect on the performance of cured-in-place pipe liners and desires additional scrutiny.

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Mechanical Properties of Polyester Resins in Saline Water Environments

Cited by 24 publications

References 35 publications

Morphological, Thermal, and Physicochemical Characterization of Surface ModifiedPinusFibers

Morphological, Thermal, and Physicochemical Characterization of Surface ModifiedPinusFibers

A review on the degradation of properties under the influence of liquid medium of hybrid polymer composites

Influence of aggressive environmental aging on mechanical and thermo-mechanical properties of Ultra Violet (UV) Cured in Place Pipe liners

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