Effects of Sulfuric Acid on Durability Characteristics of CFRP Composite Sheets

Ji, Yongcheng; Kim, Yail J.

doi:10.1061/(asce)mt.1943-5533.0002008

Cited by 16 publications

(15 citation statements)

References 22 publications

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“…Nevertheless, carbon fibres were not directly damaged because they were shielded by the epoxy resin. The high deterioration rate of the epoxy interface softened the material strain, thus reducing the maximum load that can be carried by the composites [ 102 ]. The effect of an acidic solution on fibre-reinforced plastic pipe was investigated by Mahmod et al at ambient and high temperatures.…”

Section: Degradation Of Recycled Carbon Fibre Compositesmentioning

confidence: 99%

A Review on Recycling of Carbon Fibres: Methods to Reinforce and Expected Fibre Composite Degradations

et al. 2022

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Carbon fibres are widely used in modern industrial applications as they are high-strength, light in weight and more reliable than other materials. The increase in the usage of carbon fibres has led to the production of a significant amount of waste. This has become a global issue because valuable carbon fibre waste ends up in landfill. A few initiatives have been undertaken by several researchers to recycle carbon fibre waste; however, the properties of this recycled material are expected to be worse than those of virgin carbon fibre. The incorporation of polymers, nanoparticles and other hybrid materials could enhance the overall properties of recycled carbon fibre waste. However, the degradation of fibre composites is expected to occur when the material is exposed to certain conditions and environments. The study of fibre composite degradation is crucial to enhance their properties, strength, safety and durability for future applications.

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Section: Degradation Of Recycled Carbon Fibre Compositesmentioning

confidence: 99%

A Review on Recycling of Carbon Fibres: Methods to Reinforce and Expected Fibre Composite Degradations

et al. 2022

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“…It was reported that carbon fibres showed excellent resistance to acid attack, but other fibres are considered weak against acid attacks [110]; glass fibres display very low resistance to alkaline environments compared to other fibres [7]. Besides, upon exposure to an acidic or alkaline solution, polymeric resins are most degraded and their T g may be reduced [93,111]. Long-term acid exposure decreases the overall load carrying capacity, energy dissipation capacity and strain softening owing to the chemical damage to the resin-fibre interface within the FRP [111].…”

Section: Acidic-alkaline Conditionsmentioning

confidence: 99%

“…Besides, upon exposure to an acidic or alkaline solution, polymeric resins are most degraded and their T g may be reduced [93,111]. Long-term acid exposure decreases the overall load carrying capacity, energy dissipation capacity and strain softening owing to the chemical damage to the resin-fibre interface within the FRP [111]. These degradations are dependent on the exposure time, concentration of chemicals during the exposure and temperature.…”

Section: Acidic-alkaline Conditionsmentioning

confidence: 99%

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Performances, challenges and opportunities in strengthening reinforced concrete structures by using FRPs – A state-of-the-art review

Siddika

Mamun

Ferdous

et al. 2020

Engineering Failure Analysis

162

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“…Material exposure to more aggressive conditions can cause degradation, this fact should be investigated more precisely. Evaluation of changes in examined properties is important from the point of view of quality and service life of composite material (Ji et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid

Kojnoková

Nový

Markovičová

et al. 2023

Production Engineering Archives

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This paper deals with changes in selected properties of composite material and surface degradation after exposure to an acidic environment. A carbon fiber-reinforced composite (CFRP) produced from prepregs was tested. The weight change, micro-hardness, and surface degradation of the CFRP composite made of cured pre-impregnated laminates were evaluated in this study. Material consisting of a DT121R epoxy resin matrix with high reactivity and high viscosity, with two reinforcing carbon fabrics layers, is characterized by a low value of tensile strength. Evaluation of changes in the material properties was performed before and after exposure to specific environmental conditions, which are achieved by using a chemical solution of 15% H2SO4 at various temperatures. Subsequently, the effect of 15% H2SO4 at various temperatures on the material properties was monitored. The specimens were immersed in the solution for up to 3 and 6 weeks at the temperatures of 23°C, 40°C, and 60°C. It was found out, that the degradation of the composite material is conditioned by the aging of the epoxy resin (matrix). Carbon fibers (reinforcement) are relatively stable. The weight change, micro-hardness, and surface quality depend on the time of exposure to acidic solution and temperature. The micro-hardness tests show a significant influence on exposure time. The biggest changes in weight change and surface quality of the CFRP composite were observed after exposure at the temperature of 60°C.

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Effects of Sulfuric Acid on Durability Characteristics of CFRP Composite Sheets

Cited by 16 publications

References 22 publications

A Review on Recycling of Carbon Fibres: Methods to Reinforce and Expected Fibre Composite Degradations

A Review on Recycling of Carbon Fibres: Methods to Reinforce and Expected Fibre Composite Degradations

Performances, challenges and opportunities in strengthening reinforced concrete structures by using FRPs – A state-of-the-art review

Evaluation of selected properties and surface quality of cured pre-impregnated carbon-fiber fabrics after exposure to sulphuric acid

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