Design and Fabrication of Black Textile with Solar Thermal Radiation Shielding Properties
Journal of Pizhūhish dar dīn va Salāmat (i.e., Research on Religion & Health),
Vol. 11 No. 4 (2025),
7 January 2026
,
Page 75-87
https://doi.org/10.22037/jrrh.v11i4.44396
Abstract
Background and Objective: Scientific research to produce new fabrics with special capabilities has been started a long time ago and today with the advancement of smart fabric technology, smart fabric is produced. The aim of the present study was to design and produce in the laboratory a black fabric with the ability to repel the heat energy of sunlight.
Methods: This study is laboratory-based. In this study, two types of 100% Iranian-made black wool fabrics measuring 0.5 by 0.5 meters were prepared as sample fabrics. After placing hollow glass microspheres on the fabric, the experiments were conducted in an air atmosphere with a heating rate of 10 degrees Celsius per minute up to a maximum temperature of 700 degrees Celsius. The samples were placed on a hot plate with a surface temperature of 50 degrees Celsius and at different time intervals the thermal radiation of the fabrics was compared with the initial state using thermal images. All ethical considerations were observed in the present study and the authors of the article reported no conflicts of interest.
Results: In the present study, four sample groups were examined, which included ordinary fabric without hollow glass microspheres, and fabric with 5%, 15%, and 25% hollow glass microspheres. The thermal resistance values showed that the ordinary fabric had 0.87, the fabric with 5% hollow glass microspheres had 1.05, the fabric with 15% hollow glass microspheres had 1.18, and the fabric with 25% hollow glass microspheres had a thermal resistance of 1.52. On the other hand, the p-value indicates that the probability of the observed differences between groups being due to chance is very low. Furthermore, the results demonstrated that increasing the amount of hollow glass microspheres led to an increase in thermal resistance. Finally, adding hollow glass microspheres to the fabric at all three levels (5%, 15%, and 25%) increased thermal resistance, with the greatest increase corresponding to 25% hollow glass microspheres. Based on the statistical test, these differences are statistically significant (P< 0.05).
Conclusion: The results of this study showed that the coating of pigment nanoparticles on hollow glass microspheres leads to a core-shell composite material that helps to repel solar radiation and not absorb it on the fabric. Therefore, the development of hollow glass microspheres and the investigation of their optical properties are very valuable.
- Black fabric
- Hijab
- Heat
- Smart fabric
- Sunlight
How to Cite
References
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