Charcoal-PFA Composite for Stable Carbon Storage in Buildings
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Solution Overview
Problem
Existing composite materials for carbon storage in building applications suffer from low thermal and chemical resilience, high water absorption, and poor environmental footprints, making them unsuitable for efficient and permanent carbon sequestration.
Innovation Solution
A composite material comprising charcoal powder dispersed in a polymer matrix of polyfurfuryl alcohol (PFA) with a ratio of 25 to 90 wt.% charcoal and 10 to 75 wt.% PFA, which is produced through a simple moulding process, providing high stability and low environmental impact.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Quantity of substance
If charcoal is used as filler in composite materials, then carbon storage capacity is improved, but thermal and chemical resilience deteriorates
Solution Approach 1:
The patent uses polyfurfuryl alcohol (PFA) as a polymer binder to create a composite material with charcoal powder. The PFA forms a thermosetting polymer matrix that provides thermal and chemical resilience, while the charcoal powder (25-90 wt.%) provides carbon storage capacity. This composite structure resolves the contradiction by combining materials with complementary properties.
2Quantity of substance
If charcoal is used as filler in composite materials, then carbon storage capacity is improved, but water absorption increases
Solution Approach 1:
The PFA polymer matrix acts as a hydrophobic barrier that prevents water from reaching and being absorbed by the charcoal powder particles. This composite structure maintains high carbon storage capacity while significantly reducing water absorption compared to pure charcoal or charcoal with conventional binders.
3Strength
If polymer binders are used for stability, then mechanical stability is improved, but environmental footprint deteriorates
Solution Approach 1:
The patent changes the chemical composition parameters of the polymer binder by using polyfurfuryl alcohol, which is derived from renewable furfural sources rather than fossil fuels. This parameter change maintains the mechanical stability function while improving the environmental footprint by making the binder bio-based and potentially biodegradable.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The composite material achieves long-term carbon storage with excellent thermal, mechanical, and chemical stability, suitable for building materials, and has a negative carbon dioxide balance, making it an effective carbon sink for large-scale applications.
Implementation Method 1
charcoal powder which is dispersed in a polymer matrix
Implementation Method 2
Charcoal (biochar) is produced through the thermal degradation of biomass by oxygen-controlled atmosphere (pyrolysis)
Implementation Method 3
the polymer comprises polyfurfuryl alcohol (PFA)
Data Source
AI summary
Subject of the invention is a composite material comprising charcoal powder which is dispersed in a polymer matrix, wherein the polymer comprises polyfurfuryl alcohol (PFA). The invention also relates to shaped objects comprising the composite material, uses thereof and methods for the production.