Hygrothermal aging behavior and mechanical degradation of ramie/carbon fiber reinforced thermoplastic polymer hybrid composites

Zhao, Xingzu; Li, Wei; Ouyang, Yiwei; Xu, Weilin; Liu, Y.

doi:10.1016/j.indcrop.2022.116212

Cited by 19 publications

(4 citation statements)

References 29 publications

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“…The moisture absorption value was varied from 0.3% for aging at ambient temperature to 0.8% for aging at 80 • C, where aging at ambient temperature had nearly no effect on the mechanical behavior, whereas aging at 80 • C resulted in a drastic fall in the flexural strength. Study of ramie/carbon fiber-reinforced polyethylene terephthalate glycol-based hybrid composites showed that while the moisture absorption was about 2.5% for all studied samples, the decrease in the flexural strength varied from 25 to 40%, depending on the lay-up sequence of fiber fabric layers [19]. Investigation of poly(ether-ketone-ketone) filled with CF showed that, in spite of the moisture absorption being only 0.25%, combined treatment of such composites with moisture, temperature, and UV radiation resulted in a decrease in storage modulus from 40 to 10 GPa [20].…”

Section: Introductionmentioning

confidence: 92%

Structure, Thermal, and Mechanical Behavior of the Polysulfone Solution Impregnated Unidirectional Carbon Fiber Yarns

Chukov,

Tcherdyntsev,

Stepashkin

et al. 2023

Polymers

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The paper is devoted to the study of thermal and mechanical behavior and structural features of the polysulfone solution impregnated unidirectional carbon fiber yarns depending on fabrication conditions and appearance for optimum production method of the composites. The effect of producing conditions, such as polysulfone solution concentration, drying and post-heating temperatures, and the residual solvent content on the structure, mechanical, and thermal properties of the carbon fiber-reinforced composites was studied. The polysulfone solution impregnated carbon fiber yarns show relatively high mechanical properties, realizing up to 80% of the carbon fibers’ tensile strength, which can be attributed to good wettability and uniform polymer matrix distribution throughout the entire volume of the composites. It was found that the composites impregnated with 40 wt.% of the polysulfone solution showed lower porosity and higher mechanical properties. The results of a dynamic mechanical analysis indicate that residual solvent has a significant effect on the composites’ thermal behavior. The composites heated to 350 °C for a 30 min showed higher thermal stability compared to ones dried at 110 °C due to removal of residual solvent during heating. The impregnated carbon fiber yarns can be used for the further producing bulk unidirectional composites by compression molding and the proposed method can be easily transformed to continuous filament production, for example for further use in 3-D printing technology.

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Section: Introductionmentioning

confidence: 92%

Structure, Thermal, and Mechanical Behavior of the Polysulfone Solution Impregnated Unidirectional Carbon Fiber Yarns

Chukov,

Tcherdyntsev,

Stepashkin

et al. 2023

Polymers

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“…The main cause of non-uniform PCM aging is the action of water [ 26 , 49 ]. In [ 49 ], depending on the laying of hybrid multifiber-reinforced thermoplastic polymer composites, after 90 days of exposure to water, the bending strength of the composites [R/R/C/C]s, [R/C/R/C]s, [C/R/C/R]s, and [C/C/R/R]s are reduced by 34.2%, 36.9%, 25.2%, and 25.8%, respectively. In addition, the failure modes of hybrid composites before and after hygrothermal aging vary from brittle failure to ductile failure.…”

Section: The Role Of the Main Factors On The Uneven Aging Of Pcmmentioning

confidence: 99%

“…Thus, according to the data of [ 49 , 50 , 51 ], internal hygrothermal stresses are maximum on the surface of PCM plates at the initial moments of moisture sorption and d{esorption. Therefore, the probability of the formation of microcracks in the surface layers increases, which explains the formation of a gradient in the mechanical strength of PCM over the thickness of the samples.…”

Section: The Role Of the Main Factors On The Uneven Aging Of Pcmmentioning

confidence: 99%

“…Satisfactory solutions have been obtained only for certain simple cases. In [ 49 ], the model for the evolution of moisture diffusion and behavior during hygro-thermal aging was constructed using finite element analysis. At the same time, a clear convergence with the experimental results of moisture absorption was obtained and differences in the evolution of moisture diffusion in R/C hybrid composites were shown.…”

Section: Modeling Uneven Aging Of Pcmsmentioning

confidence: 99%

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Contributing Factors of Uneven Climatic Aging for Polymeric Composite Materials: Methods and Modelling

et al. 2023

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Regarding a wide variety of PCMs, the materials’ strength properties which decrease no more than 20% after 30 years of operation are of special interest. One of the important regularities of the climatic aging of PCMs is the formation of gradients of mechanical parameters across the thickness of the plates. The occurrence of gradients must be taken into account when modeling the strength of PCMs for long periods of operation. At present, there is no scientific basis for the reliable prediction of the physical-mechanical characteristics of PCMs for a long period of operation in the world of science. Nevertheless, “climatic qualification” has been a universally recognized practice of substantiating the safe operation of PCMs for various branches of mechanical engineering. In this review, the influence of solar radiation, temperature, and moisture according to gradients of mechanical parameters across the thickness of the PCMs are analyzed according to the data of dynamic mechanical analysis, linear dilatometry, profilometry, acoustic emission, and other methods. In addition, the mechanisms of uneven climatic PCM aging are revealed. Finally, the problems of theoretical modeling of uneven climatic aging of composites are identified.

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Multi‐layer structure design, fabrication and numerical simulations of 3D woven spacer fabric composites with improved mechanical properties

Huang,

Zhao,

Zhao

et al. 2024

Polymer Composites

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The 3D woven spacer fabric lightweight composites (WSFC) show promising applications in construction, transportation and aerospace. In this study, the 3D WSFC with different structural variations (e.g., layer thicknesses, stacking and face layer thickening) were designed and fabricated. The fracture strengths of single‐layer WSFC in the weft direction with layer thicknesses of 5, 10 and 15 mm were 54.4, 14.3, and 5.4 MPa. In the weft direction, the fracture strengths of double‐ and triple‐stacked 3D WSFCs were 30.6 and 21.7 MPa, which improved 1.1 times and 3.0 times as compared with those of original single‐layer 3D WSFCs, respectively. The double‐ and triple‐stacked WSFC also had large flexural deformation. The 3D WSFC with double‐layer misaligned stacking had the similar flexural strengths in both directions, which obviously reduced the performance differentiation of 3D WSFC in different directions. With the addition of face layer fabric, the mechanical performances of 3D WSFC were notably enhanced, and the damage modes were changed from brittle failure to ductile failure. Furthermore, a multi‐scale model of 3D WSFC with different structural variations was developed for numerical simulation to analyze the stress distribution and damage mechanism.Highlights Stacking design obviously improves mechanical properties of 3D WSFC. WSFC with misaligned stacking has similar flexural strengths. A multi‐scale elastic–plastic damage model for 3D WSFC is established. Damage modes of WSFC are changed with the stacking method.

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Hygrothermal aging behavior and mechanical degradation of ramie/carbon fiber reinforced thermoplastic polymer hybrid composites

Cited by 19 publications

References 29 publications

Structure, Thermal, and Mechanical Behavior of the Polysulfone Solution Impregnated Unidirectional Carbon Fiber Yarns

Structure, Thermal, and Mechanical Behavior of the Polysulfone Solution Impregnated Unidirectional Carbon Fiber Yarns

Contributing Factors of Uneven Climatic Aging for Polymeric Composite Materials: Methods and Modelling

Multi‐layer structure design, fabrication and numerical simulations of 3D woven spacer fabric composites with improved mechanical properties

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