Study of Thermal Conductivity and Hardness of Coir Fiber Reinforced Epoxy Composite

Year : 2026 | Volume : 14 | Special Issue 02 | Page : 1576 1582
By

Manoj Sharma,

Vishal Wankhade,

Rajeev Sharma,

Shashi Chandra Sharma,

  1. Ph.D. Scholar, Department of Mechanical Engineering, Amity University, Jaipur, Rajasthan, India
  2. Ph.D. Scholar, Department of Mechanical Engineering, Amity University, Jaipur, Rajasthan, India
  3. Assistant Professor, Department of Chemical Engineering, Amity University, Jaipur, Rajasthan, India
  4. Professor, Department of Mechanical Engineering, Acropolis Institute of Technology & Research, Indore, Madhya Pradesh, India

Abstract

Researchers are drawn to polymer reinforced natural fibers composite for the development of new materials. The research aims to use waste fibers, specifically coir, to create polymer composite materials. Thermal conductivity and hardness of the composite results are determined under various conditions. Coir fiber is used as the reinforcement material and Coir powder is used as the filler material in the study. In the case of the matrix, the epoxy resin used in the study is taken. For the desired properties, variations in fiber concentration and in the matrix filler were observed. The hand layup technique is employed to produce the composite material. Fibers are cut to the necessary dimensions and combined with epoxy to create the composite. The size of the fiber also varies to understand the impact of fiber size on properties, it was found that the increase in thermal conductivity and the hardness of the matrix for the same length coir fiber and the increase in percentage of filler under the given conditions. The hardness and thermal conductivity of the composite are found to be barely affected by changes in the length of the coir fiber in the matrix. The thermal conductivity values for 5% coir fiber, 5% coir powder, and a fiber length of 20 mm are 0.218, 0.219, and 0.224 W/mK, respectively. The hardness values for 5% coir fiber, 5% coir powder, and a fiber length of 20 mm are 45.2, 59.2, and 80 W/mK, respectively.

Keywords: Natural fiber, coir fiber, epoxy, property, composite material.

[This article belongs to Special Issue under section in Journal of Polymer & Composites (jopc)]

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How to cite this article: Manoj Sharma, Vishal Wankhade, Rajeev Sharma, Shashi Chandra Sharma. Study of Thermal Conductivity and Hardness of Coir Fiber Reinforced Epoxy Composite. Journal of Polymer & Composites. 2026; 14(02):1576-1582.
How to cite this URL: Manoj Sharma, Vishal Wankhade, Rajeev Sharma, Shashi Chandra Sharma. Study of Thermal Conductivity and Hardness of Coir Fiber Reinforced Epoxy Composite. Journal of Polymer & Composites. 2026; 14(02):1576-1582. Available from: https://journals.stmjournals.com/jopc/article=2026/view=238745

References

  1. Mohammed Layth, Ansari MNM, Pua Grace, et al. A Review on Natural Fiber Reinforced Polymer Composite and Its Applications. International Journal of Polymer Science, Hindawi Publishing Corporation. 2015; Article ID 243947, 15 pages, https://doi.org/10.1155/2015/243947.
  2. Prabhakar MN, Shah Atta Ur Rehman, Rao K. Chowdoji, et al. Mechanical and Thermal Properties of Epoxy Composites Reinforced with Waste Peanut Shell Powder as a Bio-filler. Fibers and Polymers. 2015; 16 (5); 1119–1124. doi:1007/s12221-015-1119-1.
  3. Omrani Emad, Menezes Pradeep L, Rohatgi Pradeep K. State of the art on tribological behavior of polymer matrix composites reinforced with natural fibers in the green materials world. Engineering science and technology, an international journal. 2016; 19; 717–736. https://doi.org/10.1016/j.jestch.2015.10.007.
  4. Sun Zhihui, Zhang Li, Liang Duoping et al. Mechanical and Thermal Properties of PLA Biocomposites Reinforced by Coir Fibers. International Journal of Polymer Science, Hindawi. Article ID 2178329. 2017; 8 pages. doi:1155/2017/2178329.
  5. Pickering KL, AruanEfendy MG, Le TM. A review of recent development in natural fiber composites and their mechanical performance. Composite: Part A. 2016; 83; 98–112, https://doi.org/10.1016/j.compositesa.2015.08.038.
  6. Salasinska Kamila, Barczewski Mateusz, Gorny Rafal et al. Evaluation of highly filled epoxy composites modified with walnut shell waste filler. Polym. Bull. 2018; 75; 2511–2528. doi:1007/s00289-017-2163-3.
  7. BochareRH, Gidde RR. Experimental Investigation of Hardness Value of Coir Fiber/Epoxy Resin Composite. International Journal of Advance Research, Ideas and Innovations in Technology. 2017; 3(3). ISSN: 2454-132X.
  8. Progelhof RC, Throne JL, Ruetsch RR. Methods for predicting the thermal conductivity of composite systems: A review. Polymer engineering and science. 1976. 76(9).
  9. Khalid Muhammad Yasir, Rashid Al, Arif Zia Ullah et al. Natural fiber reinforced composites: Sustainable materials for emerging applications. Results in Engineering. 2021; 11 (100263). https://doi.org/10.1016/j.rineng.2021.100263.
  10. Mittal V, Saini R, Sinha S. Natural fiber-mediated epoxy composites – A review. Composites Part B. 2016; 99; 425–435. https://doi.org/10.1016/j.compositesb.2016.06.051.
  11. Peças Paulo, Carvalho Hugo, Salman Hafiz, et al. Natural Fiber Composites and Their Applications: A Review. Journal of composite science, 2018; 2 (66); https://doi.org/10.3390/jcs2040066.
  12. Jayavani S, Deka Harekrishna, Varghese TO, et al. Recent Development and Future Trends in Coir Fiber-Reinforced Green Polymer Composites: Review and Evaluation. Wiley Online Library, polymer composites. 2016; https://doi.org/10.1002/pc.23529.
  13. Lian Xingrong , TianLin , ZengyaoLi, et al. Thermal conductivity analysis of natural fiber-derived porous thermal insulation materials. International Journal of Heat and Mass Transfer.2024; 220 (124941).
  14. Dev Barshan, Rahman Ashikur,  Repon Md. Reazuddin, et al. Recent progress in thermal and acoustic properties of natural fiber reinforced polymer composites: Preparation, characterization, and data analysis. Polymer composites. 2023;https://doi.org/10.1002/pc.27633.
  15. Kumar Ashwini, Behura Arun K.,  Rajak Dipen K.et al. Thermal Properties of Natural Based Fibers Composites. 2021; https://doi.org/10.1002/9783527832996.ch12.
  16. NetoJorge S S , De QueirozHenrique F M ,  Aguiar Ricardo A A et al. A Review on the Thermal Characterisation of Natural and Hybrid Fiber Composites. Polymers (Basel), 2021; 13(24); 4425. doi: 3390/polym13244425.

Special Issue Subscription Original Research
Volume 14
Special Issue 02
Received 23/08/2025
Accepted 23/12/2025
Published 18/03/2026
Publication Time 207 Days


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