New Thermal Insulation Materials Based on Mahogany Sawdust and Polyurethane Foam for Buildings

Gita Novian Hermana, M. Rizki Gorbyandi Nadi, M. Nur Hidajatullah, M. Nursyam Rizal


Global energy consumption has increased in the last few decades and is the third largest contributor to global energy consumption and one of the causes of increased carbon dioxide emissions. Therefore, in this study utilizing sawdust mahogany as a thermal insulation material to overcome the above problems. Sawdust material is combined with polyurethane foam to produce optimal physical, mechanical, and thermal insulation properties. From the study results it was found that the density of the thermal insulation material increased with the addition of sawdust. The value of the density is in the range of 0.041-0.052 gr/cm3. Observations using the secondary electron image (SEI) on thermal insulation materials show that the amount of sawdust added will affect the formation of an open pore cell structure which is directly proportional to the addition of sawdust. In addition, the more sawdust that is added will change the arrangement of cells and reduce the mechanical properties of the thermal insulation material. This is confirmed by the results of the hardness test which decreases with the addition of sawdust with the lowest value of 16.6 shore C for the addition of 10% sawdust. The thermal conductivity of the thermal insulation material has a value of 0.052, 0.038, 0.033, 0.032, and 0.033 W/mK for the addition of 0.2.5%, 5%, 7.5% and 10% sawdust, respectively. This shows that the thermal insulation material made in this study can be used as an alternative to thermal insulation material


thermal insulation material; mahogany sawdust;polyurethane foam; thermal conductivity; composite

Full Text:



ASTM, D. 2010. ASTM D-2240. Shore Hardness.

Binici, H., Aksogan, O., Dıncer, A., Luga, E., Eken, M., Isikaltun, O. 2020. The possibility of vermiculite, sunflower stalk and wheat stalk using for thermal insulation material production. Thermal Science and Engineering Progress. 18: 100567.

Cetiner, I., Shea, A. D. 2018. Wood waste as an alternative thermal insulation for buildings. Energy and Buildings. 168: 374-384.

Członka, S., Kairytė, A., Miedzińska, K., Strąkowska, A., Adamus-Włodarczyk, A. 2021. Mechanically strong polyurethane composites reinforced with montmorillonite-modified sage filler (Salvia officinalis L.). International Journal of Molecular Sciences. 22(7): 3744.

Członka, S., Strąkowska, A., Kairytė, A. 2020. Effect of walnut shells and silanized walnut shells on the mechanical and thermal properties of rigid polyurethane foams. Polymer testing. 87, 106534.

Dukarska, D., Walkiewicz, J., Derkowski, A., Mirski, R. 2022. Properties of rigid polyurethane foam filled with sawdust from primary wood processing. Materials. 15(15): 5361.

Geng, Y., Ji, W., Lin, B., Hong, J., Zhu, Y. 2018. Building energy performance diagnosis using energy bills and weather data. Energy and Buildings. 172: 181-191.

Gu, R., Sain, M. M., Konar, S. K. 2013. A feasibility study of polyurethane composite foam with added hardwood pulp. Industrial crops and products. 42: 273-279.

Huang, H., Zhou, Y., Huang, R., Wu, H., Sun, Y., Huang, G., Xu, T. 2020. Optimum insulation thicknesses and energy conservation of building thermal insulation materials in Chinese zone of humid subtropical climate. Sustainable Cities and Society. 52: 101840.

ISO, E. 1991. Thermal insulation-Determination of steady-state thermal resistance and related properties-Guarded hot plate apparatus. International Organization for Standardization. Geneva, Switzerland.

Lin, Y., Li, X., Huang, Q. 2021. Preparation and characterization of expanded perlite/wood-magnesium composites as building insulation materials. Energy and Buildings. 231: 110637.

Liu, L., Zou, S., Li, H., Deng, L., Bai, C., Zhang, X., Wang, S., Li, N. 2019. Experimental physical properties of an eco-friendly bio-insulation material based on wheat straw for buildings. Energy and Buildings. 201: 19-36.

Mawardi, I., Aprilia, S., Faisal, M., Rizal, S. 2022. An investigation of thermal conductivity and sound absorption from binderless panels made of oil palm wood as bio-insulation materials. Results in Engineering. 13: 100319.

Merli, F., Belloni, E., Buratti, C. 2021. Eco-Sustainable Wood Waste Panels for Building Applications: Influence of Different Species and Assembling Techniques on Thermal, Acoustic, and Environmental Performance. Buildings. 11(8): 361.

Muthuraj, R., Lacoste, C., Lacroix, P., Bergeret, A. 2019. Sustainable thermal insulation biocomposites from rice husk, wheat husk, wood fibers and textile waste fibers: Elaboration and performances evaluation. Industrial crops and products. 135: 238-245.

Ross, R. J. 2010. Wood handbook: wood as an engineering material. USDA Forest Service, Forest Products Laboratory, General Technical Report FPL-GTR-190. 1 - 190.

Tiuc, A., Rusu, T., Nemeş, O. 2015. Obtaining process sound absorbent composite material. Patent No. 129228 B1. international classification C04B 26/26 (2006.01).

Tiuc, A. E., Nemeş, O., Vermeşan, H., & Toma, A. C. 2019. New sound absorbent composite materials based on sawdust and polyurethane foam. Composites Part B: Engineering. 165: 120-130.

Zou, S., Li, H., Wang, S., Jiang, R., Zou, J., Zhang, X., Liu, L., Zhang, G. 2020. Experimental research on an innovative sawdust biomass-based insulation material for buildings. Journal of Cleaner Production. 260: 121029.


  • There are currently no refbacks.