An Analysis of the Thermal Conductivity of Composite Materials (CPC-30R/Charcoal from Sugarcane Bagasse) Using the Hot Insulated Plate Technique

Salgado-Delgado, René; Paredes, Alfredo Olarte; Delgado, Areli Marlen Salgado; Vargas-Galarza, Zully; López-Lara, Teresa; Hernández-Zaragoza, Juan Bosco; Rico-Rodríguez, Israel; Martínez-Barrera, Gonzalo

doi:10.1155/2016/4950576

Cited by 13 publications

(10 citation statements)

References 4 publications

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“…The EPS showed an increase in TC values, indicating that it had less resistance to heat transmission. A decrease in the TC value of SBFs indicates a higher resistance to transmission of heat through the material . In general, it was observed that the TC values from PF (9 g) and EPS were statistically different (α = 0.05).…”

Section: Resultsmentioning

confidence: 94%

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Biodegradable baked foam made with chayotextle starch mixed with plantain flour and wood fiber

Vargas‐Torres

Palma‐Rodríguez

Berríos

et al. 2017

J of Applied Polymer Sci

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New renewable materials are needed to reduce petroleum-based plastic packaging. The effect of plantain flour (PF) and wood fiber (WF) on the properties of starch-based foams (SBFs) were investigated. The SBFs were characterized using physical, thermal, and mechanical methods to better understand the relationship between PF and WF concentration. Contact angle values showed that the addition of WF or PF increased the hydrophobic character of the SBFs. Also, the addition of PF increased the heat transfer resistance and density of the foams, while their solubility decreased. The values of tensile strength and Young's modulus increased with increasing concentrations of PF in the SBFs. However, the addition of PF and WF promoted a decrease on the elongation at break of the SBFs. An increase in concentration of PF also showed a decrease in water vapor permeability, and an increase in the thickness of the cell wall layer of the SBFs.

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Section: Resultsmentioning

confidence: 94%

“…The thermal conductivity (TC) of SBF was measured following the method of Salgado‐Delgado et al . A hot plate system based on the ASTM guideline C177–97 (Standard Test Method for Steady State Heat Flux Measurements and Thermal Transmission Properties by Means of the Guarded Hot Plate Apparatus) was used.…”

Section: Methodsmentioning

confidence: 99%

Biodegradable baked foam made with chayotextle starch mixed with plantain flour and wood fiber

Vargas‐Torres

Palma‐Rodríguez

Berríos

et al. 2017

J of Applied Polymer Sci

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“…6 , 27 , 28 Thus, nonwovens with lignocellulosic hemp fibers have high efficiency as heat-insulating materials. 29 The thermal conductivity values obtained for all nonwovens were in the range 0.027–0.034 W/(m K) range. These values were even lower than those of traditional thermal insulation materials.…”

Section: Resultsmentioning

confidence: 91%

Sustainable materials with high insulation capacity obtained from wastes from hemp industry processed by wet-laid

Gutierrez-Moscardo

Canet

Gomez‐Caturla

et al. 2021

Textile Research Journal

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This article reports on the revalorization of hemp waste from the textile industry, focusing on the development of new sustainable materials with high insulating properties. Wet-laid technology was used to manufacture nonwovens with different binding fibers, polylactic acid, and viscose fibers. The characterization of the acoustic insulating capacity was carried out using a Kundt tube, and the thermal insulating performance by measuring the heat transmission resistance ( R) and thermal conductivity ( λ). The results showed that the developed nonwovens have lower thermal conductivity values of about 0.027–0.034 W/(m K), were even lower than those of traditional thermal insulating materials, being the sample with 100 g/m2 of areal density and with a composition of 80% of hemp, 10% of polylactide and 10% of viscose the one with the lowest thermal conductivity (0.027 W/(mK). Their acoustic absorption capacity was around 0.76 at a frequency of 6 kHz, in samples containing high hemp waste (>80 wt%). However, the heterogeneous, discontinuous, and high void density structure that contributes to excellent insulating properties, lead to a decrease in their mechanical properties. This demonstrated that these materials are suitable for substituting traditional materials in insulating applications. Additionally, antifungal tests were carried out. However, hemp nonwovens proved to be inefficient against fungal proliferation.

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“…Depending on the material's microstructure, it can be either thermally conductive or insulating. Considering Fourier's law of conduction, it is stated that heat conduction happens when there is a temperature differential between two bodies and following Equation () 20 :

K goodbreak= goodbreak- \frac{Q \times L}{A \times ∆ T}

where K is the thermal conductivity (W/m°C), Q is the heat flow (W), L is the thickness of the sample (m), Δ𝑇 is the temperature difference (°C), and 𝐴 is the area of the sample that perpendicular to the direction of heat (m 2 ).…”

Section: Methodsmentioning

confidence: 99%

Study on microstructure and tribological properties of hierarchical 3D braid applicable in heavy operating tribology conditions

et al. 2022

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The phenomenon of wear and friction in a variety of environments, including dry, seawater, and high temperatures, has always been a source of contention.Designing and fabricating parts that can function optimally in these conditions, such as self-lubricating composites, is helpful. This work investigated the tribological and thermal properties of a three-dimensional braid composite consisting of PTFE yarns and three types of reinforcement in the hierarchical structure under different operating conditions. In this study, the effect of different speeds was considered as well as effect of load. Roughness (Rq) and wear rate of the worn surface were also taken into account while evaluating the friction coefficient. By the response surface method (RSM) and D-optimal design, the tests were planned experimentally so that the minimum test was performed. Statistical models from the analysis of experimental data by RSM revealed that the friction coefficient of all composites rises in dry conditions with increasing load and sliding speed. In contrast, in seawater conditions, the more difficult the test conditions, the friction took a positive trend. Glass fiber reinforced composites were temperature sensitive and behaved differently in different conditions. The most optimal cases were calculated and reported by the utility function. Furthermore, the coefficient of friction values obtained in all cases were desirable and reliable.

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An Analysis of the Thermal Conductivity of Composite Materials (CPC-30R/Charcoal from Sugarcane Bagasse) Using the Hot Insulated Plate Technique

Cited by 13 publications

References 4 publications

Biodegradable baked foam made with chayotextle starch mixed with plantain flour and wood fiber

Biodegradable baked foam made with chayotextle starch mixed with plantain flour and wood fiber

Sustainable materials with high insulation capacity obtained from wastes from hemp industry processed by wet-laid

Study on microstructure and tribological properties of hierarchical 3D braid applicable in heavy operating tribology conditions

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