Analysis of thermal insulation ceiling panel from mycelium-rice straw

Abstract

This study delves into developing and characterizing a thermal insulation ceiling panel utilizing a mycelium and rice straw composite. This research evaluates the composite's density, water absorption, thermal conductivity, and fire resistance to develop an eco-friendly, cost-effective, and fire-retardant alternative to conventional materials. The methodology encompasses the preparation of rice straw, its sterilization, and combination with mycelium, followed by various molding, demolding, and oven drying stages. Crucial tests conducted include assessments of physical properties such as density and water absorption (with short-term values of 13.56%, 12.04%, 9.92% and long-term values of 35.75%, 28.92%, 23.37%), SEM analysis for structural examination, and thermal property evaluations, notably thermal conductivity (recorded at 0.1488 W/mK, 0.1487 W/mK, 0.1486 W/mK) and ignition capability. The findings reveal that the mycelium-rice straw composite meets class E fire resistance standards and exhibits thermal conductivity comparable to traditional insulating materials alongside low water absorption rates. These results underscore the composite's viability as a sustainable and effective thermal insulation material, aligning well with the construction industry's environmental objectives and fire safety requirements. The study opens avenues for further research and optimization of these composites, highlighting their potential for broader applications across various sectors.