Study on Properties of Graphite Polystyrene Permeable Composite Insulation Board

Ju-song, Zhang; Cao, Yanan; Wang, Xin

doi:10.1088/1757-899x/744/1/012043

IOP Conf. Ser.: Mater. Sci. Eng.

2020

DOI: 10.1088/1757-899x/744/1/012043

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Study on Properties of Graphite Polystyrene Permeable Composite Insulation Board

Zhang Ju-song

Yanan Cao

Xin Wang³

Abstract: In order to further optimize the properties of polystyrene permeable flame retardant composite insulation board, the composition, properties and flame retardant mechanism of graphite polystyrene permeable flame retardant composite insulation board were discussed in this paper. The properties of graphite polystyrene substrate and permeable flame retardant, the optimum ratio of permeable flame retardant. The tensile strength, compressive strength, thermal conductivity and softening coefficient perpendicular to t… Show more

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Experimental Study on the Thermal Conductivity of Improved Graphite Composite Insulation Boards

Liu

Guo²,

Jian

et al. 2023

Crystals

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The thermal conductivity of thermal insulation materials directly affects the building energy consumption. The types and constituents of thermal insulation materials in thermal insulation boards are the key to determining the insulation performance. By optimizing the material constituents and ratios, this paper proposes an improved graphite composite insulation board (GCIB), which has lower thermal conductivity and good fire resistance. Through theoretical derivation, it is found that the limit range of the thermal conductivity of the new GCIB is 0.042–0.064 W/(m · K). Combined with the results of theoretical value analysis, and according to the ratios of material components, the random distribution function of each material component is constructed, and the numerical model of GCIB is established. Through numerical analysis, the range of thermal conductivity of the new composite insulation board is 0.046–0.050 W/(m · K). Finally, we establish an experimental model of the new GCIB. Through the model test of six GCIBs, the thermal conductivity of the new GCIB is obtained as 0.046 W/(m · K), which is in good agreement with the results of theoretical analysis and numerical simulation. Through theoretical analysis, numerical simulation and a sample test, this paper verifies the better thermal insulation performance of the improved GCIB, providing theoretical and numerical simulation methods for the new GCIB, as well as a theoretical reference for the promotion and application of the GCIB.

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Experimental Study on the Thermal Conductivity of Improved Graphite Composite Insulation Boards

Liu

Guo²,

Jian

et al. 2023

Crystals

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Multiscale Thermal Investigations of Graphite Doped Polystyrene Thermal Insulation

Lakatos

Csík

2022

Polymers

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Nowadays, to improve quality of life, to have a more comfortable life, in internal spaces we try to maintain conditions that are free from external environmental influences. Thus, existing as well as newly built houses have adequate interiors maintaining their temperature, warming, or cooling due to the environment compensation. One way to create this is to reduce the heat loss in buildings. An option to achieve this is the application of thermal insulations. Nowadays, the use of super insulation materials such as aerogel and vacuum insulation panels and other nano-structured insulations, such as graphite doped expanded polystyrene, is becoming increasingly justified. These are relatively new materials, and we know only a little about them. This paper presents research results based on temperature-induced investigations of nanostructured graphite expanded polystyrene, to reveal its thermal stability after long-term and short-term thermal annealing, simulating the ageing of the material. Firstly, with a differential scanning calorimeter, we will explore the thermal stability profile of the specimens. After this, the paper will present temperature-induced changes in both the thermal properties and the structure of the samples. We will also present changes in the thermal conductivity, modifications in the surface, and compressive property variation induced by thermal annealing. The samples were thermal annealed at 70 °C for 6 weeks, at 100 and 110 °C for 1 h. Besides the thermal conductivity measurements with Netzsch 446 heat flow meter equipment, we will present specific heat capacity measurement results executed with the same equipment. Moreover, sorption isotherms of the as-received and annealed samples were registered and completed with hydrophobic experiments, too. Furthermore, from the measurements, we showed that temperature should affect a significant change in the thermal conductivity of materials. Moreover, the changes in the graphite expanded polystyrene before and after thermal annealing were investigated by Scanning Electron Microscopy, as well as optical microscopy. The structural changes were further followed by an X-ray diffractometer and the IR absorption capability was tested, too.

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Study on Properties of Graphite Polystyrene Permeable Composite Insulation Board

Cited by 2 publications

References 3 publications

Experimental Study on the Thermal Conductivity of Improved Graphite Composite Insulation Boards

Experimental Study on the Thermal Conductivity of Improved Graphite Composite Insulation Boards

Multiscale Thermal Investigations of Graphite Doped Polystyrene Thermal Insulation

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