Biodegradable Composite with Voids for Lightweight Strength
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Solution Overview
Problem
Natural materials used in structural applications often have poor mechanical properties and sustainability challenges due to harvesting restrictions and high costs, while existing composite materials may not adequately address these issues.
Innovation Solution
A composite material composition comprising a matrix with voids and reinforcing fibers made from biodegradable or recyclable materials, where the fibers are stiffer than the matrix, arranged in a longitudinal direction to enhance mechanical properties and mimic bamboo's structure, reducing weight and environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If natural materials are used for structural applications, then sustainability is improved, but mechanical properties deteriorate
Solution Approach 1:
The patent creates a composite material combining a biodegradable matrix (PLA or PBS) with natural reinforcing fibers (bamboo, sisal, coconut, or cotton). This composite structure allows the material to achieve enhanced mechanical properties while maintaining sustainability, as the natural fibers provide reinforcement and the biodegradable matrix provides structural continuity and environmental compatibility.
Solution Approach 2:
The patent introduces voids at specific locations within the matrix to create a hierarchical structure that mimics natural materials like bamboo. These voids are strategically positioned to reduce density and weight while maintaining structural integrity in critical areas, allowing different regions of the material to have different properties optimized for their specific functions.
2Object-generated harmful factors
If wood or plant-based materials are used, then sustainability is improved, but cost increases
Solution Approach 1:
The patent utilizes agricultural waste materials (bamboo scraps, sisal fibers, coconut husks, cotton gin trash) that would otherwise be discarded, transforming them into valuable reinforcing fibers. This parameter change in material selection - from premium wood to agricultural waste - significantly reduces raw material costs while maintaining sustainability and even enhancing mechanical properties through the hierarchical structure.
3Object-generated harmful factors
If natural materials are used, then sustainability is improved, but mechanical strength deteriorates
Solution Approach 1:
The patent creates a composite material combining a biodegradable matrix (PLA or PBS) with natural reinforcing fibers (bamboo, sisal, coconut, or cotton). This composite structure allows the material to achieve enhanced mechanical properties while maintaining sustainability, as the natural fibers provide reinforcement and the biodegradable matrix provides structural continuity and environmental compatibility.
Solution Approach 2:
The patent introduces voids at specific locations within the matrix to create a hierarchical structure that mimics natural materials like bamboo. These voids are strategically positioned to reduce density and weight while maintaining structural integrity in critical areas, allowing different regions of the material to have different properties optimized for their specific functions.
4Strength
If dense solid structure is used, then mechanical strength is improved, but weight increases
Solution Approach 1:
The patent introduces a hierarchical void structure within the matrix, creating controlled porosity at the micro-scale. These voids reduce the overall density and weight of the composite material while the surrounding matrix and embedded fibers maintain structural integrity. The porous structure mimics natural materials like bamboo, achieving lightweight design without sacrificing mechanical strength.
Data Source
AI summary
A material composition including a matrix including a first material, the matrix including a plurality of voids disposed in the matrix, two or more voids being spaced apart from each other, a plurality of elongate fibers of a second material located within the matrix, wherein the plurality of fibers are configured to reinforce the matrix and, wherein the material composition is a composite material composition.