Comparison of steady-state and transient thermal conductivity testing methods using different industrial rubber compounds

Kerschbaumer, Roman Christopher; Stieger, Sebastian; Gschwandl, Mario; Hutterer, Thomas; Fasching, Michael; Lechner, Bernhard; Meinhart, L.; Hildenbrandt, J.; Schrittesser, Bernd; Fuchs, Peter; Berger, Gerald; Friesenbichler, Walter

doi:10.1016/j.polymertesting.2019.106121

Cited by 42 publications

(19 citation statements)

References 16 publications

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“…Knowledge of the thermal conductivity is important not only for the modeling of rubber-based composites, but also for enhancement of rubber injection molding processes [5]. The thermal conductivity of rubber can be determined by theoretical approaches and experimental techniques.…”

Section: Introductionmentioning

confidence: 99%

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Thermal Conductivity of Polybutadiene Rubber from Molecular Dynamics Simulations and Measurements by the Heat Flow Meter Method

et al. 2021

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Thermal conductivities of polybutadiene rubbers crosslinked by 2.4 and 2.8 phr of sulfur have been found to be functions of temperature via molecular dynamics (MD) simulations using the Green–Kubo method. From an analysis of the heat flux autocorrelation functions, it has been revealed that the dominant means of heat transport in rubbers is governed by deformations of polymeric chains. Thermal conductivities of rubber samples vulcanized by 2.4 and 2.8 phr of sulfur have been measured by the heat flow meter method between 0 ∘C and 60 ∘C at atmospheric pressure. The temperature dependencies of the thermal conductivities of rubbers and their glass transition temperatures derived from MD simulations are in good agreement with the literature and experimental data. Details are discussed in the paper.

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Section: Introductionmentioning

confidence: 99%

“…Another transient method for measurements of thermal conductivities of rubbers and composites is the Laser Flash technique [5,[9][10][11][12][13][14]. In this method the thermal diffusivity of a sample is measured, therefore it requires knowledge of heat capacity and density to find the thermal conductivity.…”

Section: Introductionmentioning

confidence: 99%

Thermal Conductivity of Polybutadiene Rubber from Molecular Dynamics Simulations and Measurements by the Heat Flow Meter Method

et al. 2021

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“…Thermal conductivity of NBR during carbonization does not change and is about 0.2 W/(m•K), which is a typical value for a significant number of synthetic rubbers and polymer materials [1][2][3]41]. The increase in the thermal conductivity of the composite material is due to the alignment of optimal heat transit paths through the filler net [2,3,42].…”

Section: Discussionmentioning

confidence: 99%

Low-Temperature Carbonized Elastomer-Based Composites Filled with Silicon Carbide

et al. 2020

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Thermally stable composites obtained by the low-temperature carbonization of an elastomeric matrix filled with hard dispersed silicon carbide particles were obtained and investigated. Evolution of the microstructure and of mechanical and thermal characteristics of composites during thermal degradation and carbonization processes in a wide range of filling from 0 to 450 parts per hundred rubber was studied. For highly filled composites, the compressive strength values were found to be more than 200 MPa; Young’s modulus was more than 15 GPa. The thermal conductivity coefficient of composites was up to 1.6 W/(m·K), and this magnitude varied slightly in the temperature range of 25–300 °C. Coupled with the high thermal stability of the composites, the observed properties make it possible to consider using such composites as strained friction units instead of reinforced polymers.

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“…Kerschbaumer et al compare different measurement principles on filled and unfilled rubber compounds. They find large differences between the measuring systems used, but a temperature independence of the thermal conductivity for all systems and rubber compounds used 29 . Hands and Horsfall also find temperature‐independent values for unfilled systems.…”

Section: Methodsmentioning

confidence: 95%

“…They find large differences between the measuring systems used, but a temperature independence of the thermal conductivity for all systems and rubber compounds used. 29 Hands and Horsfall also find temperature-independent values for unfilled systems. After the addition of carbon black, the thermal conductivity increases significantly at room temperature but decreases with increasing temperature in their studies.…”

Section: Thermal Diffusivity and Thermal Conductivitymentioning

confidence: 92%

Experimental and simulative investigation of a multistage 2K injection molding process of PA6 and EPDM

Teich

Haberstroh

Giese

2021

J of Applied Polymer Sci

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For investigations on a two-stage multicomponent injection molding process adhesion-modified polyamide 6 and EPDM with sulfur-curing system are used.The influence of different process temperatures is investigated on the basis of a DoE test plan with 15 factor level combinations. Within the scope of additional, more in-depth investigations, special focus was given to the preheating temperature of the thermoplastic insert. In addition to the experimental work, results from simulations are used to assess the influencing factors. This

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Comparison of steady-state and transient thermal conductivity testing methods using different industrial rubber compounds

Cited by 42 publications

References 16 publications

Thermal Conductivity of Polybutadiene Rubber from Molecular Dynamics Simulations and Measurements by the Heat Flow Meter Method

Thermal Conductivity of Polybutadiene Rubber from Molecular Dynamics Simulations and Measurements by the Heat Flow Meter Method

Low-Temperature Carbonized Elastomer-Based Composites Filled with Silicon Carbide

Experimental and simulative investigation of a multistage 2K injection molding process of PA6 and EPDM

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