Analysis of Sheep Wool-Based Composites for Building Insulation

Area of Science:

• Materials Science
• Sustainable Engineering
• Building Physics

Background:

• Traditional insulation materials often pose environmental challenges.
• There is a growing demand for sustainable and eco-friendly building materials.
• Sheep wool presents a viable natural resource for insulation applications.

Purpose of the Study:

• To develop and evaluate ecological thermal insulation composites using sheep wool.
• To assess the thermal conductivity and performance of these novel materials.
• To investigate other properties like sound absorption and durability.

Main Methods:

• Composite preparation using sheep wool with acrylic-polyurethane resin or natural rubber latex binders.
• Analysis of thermal conductivity influenced by thickness, density, binder type, and percentage.
• Further characterization including microstructure, chemical composition, water absorption, microbial resistance, water vapor permeability, hygrothermal adsorption, and sound absorption.

Main Results:

• Thermal conductivity values ranged from 0.0324 to 0.0436 W/mK.
• All tested composites met national thermal performance criteria for insulation.
• Selected samples exhibited good sound absorption across the tested frequency range.

Conclusions:

• Sheep wool-based composites are effective ecological thermal insulation materials.
• The materials satisfy sustainability goals and thermal performance requirements.
• While offering good acoustic properties, their susceptibility to moisture and microorganisms requires consideration for specific applications.