Fractal model of the heat conductivity for carbon fiber‐reinforced aromatic polyamide

Козлов, Г. В.; Burya, A. I.; Долбин, И. В.; Заиков, Г. Е.

doi:10.1002/app.23821

Cited by 5 publications

(5 citation statements)

References 3 publications

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“…al. [76] formed carbon fiber reinforced aromatic polyamide network. Two types of polyamide/CF networks were developed: random superconducting network and random network of resistors.…”

Section: Aromatic Polyamide/carbon Fibermentioning

confidence: 99%

Advances in Carbon Fiber Reinforced Polyamide-Based Composite Materials

Kausar

2019

Advances in Materials Science

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Carbon fiber has been used to reinforce both aliphatic and aromatic polyamides. Aliphatic polyamide is known as nylon and aromatic polyamide is often referred to as aramid. Among aliphatic polyamides, polyamide 6, polyamide 6,6, polyamide 11, polyamide 12, and polyamide 1010 have been used as matrices for carbon fiber. Factors affecting the properties of polyamide/carbon fiber composites are: fiber amount, fiber length, fiber orientation, matrix viscosity, matrix-fiber interactions, matrix-fiber adhesion, and conditions encountered during manufacturing processes. This article presents a state-of-the-art review on polyamide/carbon fiber composites. Polyamide/carbon fiber composites are lightweight and exhibit high strength, modulus, fatigue resistance, wear resistance, corrosion resistance, gear, electrical conductivity, thermal conductivity, chemical inertness, and thermal stability. Incorporation of oxidized or modified carbon fiber and nanoparticle modified carbon fiber into polyamide matrices have been found to further enhance their physical properties. Applications of polyamide/carbon fiber composites in aerospace, automobile, construction, and other industries have been stated in this review. To fully exploit potential of polyamide/carbon fiber composites, concentrated future attempts are needed in this field.

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“…al. [76] formed carbon fiber reinforced aromatic polyamide network. Two types of polyamide/CF networks were developed: random superconducting network and random network of resistors.…”

Section: Aromatic Polyamide/carbon Fibermentioning

confidence: 99%

Advances in Carbon Fiber Reinforced Polyamide-Based Composite Materials

Kausar

2019

Advances in Materials Science

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“…Studies show that fiber preform is a fractal. [37][38][39] Thus, based on fractal theory, fiber preform satisfies the following equations 28 NðÞ¼…”

Section: The New Fractal Modelmentioning

confidence: 99%

“…Studies show that fiber preform is a fractal. 37–39 Thus, based on fractal theory, fiber preform satisfies the following equations 28 where p(λ) is a density function of the equivalent diameter and L represents the characteristic quantity that is used to describe a fractal medium. L 0 is the representative length of a channel, L t ( λ ) is the physical length of the channel of which equivalent diameter equals λ (see Figure 3), ϕ is the porosity of the porous medium, λ is the equivalent diameter of a tortuous channel, and N ( λ ) the number of channels whose diameters are greater than λ .…”

Section: Modeling Processmentioning

confidence: 99%

An experimental and analytical study based on fractal theory of satin fabrics in unsaturated permeability

Wang

Qiang

Zhou

et al. 2016

Journal of Reinforced Plastics and Composites

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Prediction of relative permeability is important to avoid dry spots or micro voids in the liquid composite molding process. Most of previous studies focused on plain and twill, but few are about stain and none of them provide explicit equation to calculate accurate values of unsaturated permeability. The main purpose of this work is to first propose a new model which is proposed mainly based on fractal theory and has no empirical constant in the expression, to calculate the permeability of satin fabric. And then we employ a new experimental method to calculate the unsaturated permeability. Finally, a contrast experiment of 5-harness fabric and 8-harness fabric is designed at different injection pressures, and the accurate values of permeability are obtained. The results show that unsaturated and saturated permeabilities are in the same order of magnitude; furthermore, unsaturated permeability is 77% of saturated permeability in 5-harness fabric and 73% in 8-harness fabric.

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“…The authors of Refs [152,153] demonstrated in the framework of the above general model that the two main cases hold for polymer composites filled with short fibers. For D B`2 X62 (RSN limit), the dependence l T D B is approximated by the following equation…”

Section: Thermophysical Propertiesmentioning

confidence: 99%

Structure and properties of particulate-filled polymer nanocomposites

Козлов¹

2015

Phys.-Usp.

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Some properties of particulate-filled polymer nanocomposites, including structural features, are reviewed. Novel effects found in these materials, such as nanoadhesion and reinforcement mechanisms, are discussed. A structural analysis is performed using a fractal analysis procedure and the cluster model of the structure of a polymer in an amorphous state. The application prospects of these materials are examined in comparison with other polymer nanocomposites. Contents 2.1 Nanoadhesion effect; 2.2 Theoretical description of nanoadhesion effect: fractal models; 2.3 Practical aspects of realization of nanoadhesion effect; 2.4 Interfacial regions as a reinforcement element of polymer nanocomposites; 2.5 Nanofiller structure in a polymer matrix; 2.6 Aggregation of nanofiller particles 3. Mechanical properties 45 3.1 Reinforcement degree; 3.2 Yielding; 3.3 Failure; 3.4 Microhardness 4. Thermophysical properties 53 5. Application prospects of particulate-filled polymer nanocomposites 55 6. Conclusion 57 References 57 G V Kozlov Physics ± Uspekhi 58 (1) G V Kozlov Physics ± Uspekhi 58 (1)

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Fractal model of the heat conductivity for carbon fiber‐reinforced aromatic polyamide

Cited by 5 publications

References 3 publications

Advances in Carbon Fiber Reinforced Polyamide-Based Composite Materials

Advances in Carbon Fiber Reinforced Polyamide-Based Composite Materials

An experimental and analytical study based on fractal theory of satin fabrics in unsaturated permeability

Structure and properties of particulate-filled polymer nanocomposites

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