Ferrite compositions
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Solution Overview
Problem
Ferrite ceramic compounds, due to their brittleness, are limited in application and require adequate physical protection, which restricts their use in structures like fibre reinforced polymer composites (FRPC) where they need to provide both magnetic properties and structural support.
Innovation Solution
A magnetic ferrite composition with ferrite particulates of less than 500 nm average longest dimension dispersed in a resin binder, applied to a substrate or mixed with other fillers, forming a composite resin that can be cured to provide structural support and magnetic functionality, suitable for fibre reinforced polymer composites.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If ferrite ceramic compounds are used to provide magnetic properties, then magnetic functionality is improved, but brittleness increases and structural support capability deteriorates
Solution Approach 1:
The patent applies composite materials by combining ferrite ceramic particulates with a polymer matrix to create a composite resin system. The ferrite particles (average longest dimension less than 500 nm) are dispersed in the polymer matrix, allowing the composite to simultaneously exhibit magnetic properties from the ferrite and structural flexibility from the polymer, thereby resolving the contradiction between magnetic functionality and structural support capability
Solution Approach 2:
The patent changes the physical parameters of ferrite by reducing particle size to less than 500 nm average longest dimension. This parameter change transforms the ferrite from large brittle ceramic pieces to fine particulates that can be dispersed in polymer matrices, enabling the material to maintain magnetic properties while gaining flexibility and structural support capability through the composite system
2Reliability
If ferrite ceramic compounds are used to provide magnetic properties, then magnetic functionality is improved, but application versatility deteriorates due to brittleness requirements
Solution Approach 1:
By forming composite resins where ferrite particulates are dispersed in polymer matrices, the invention enables ferrite to be applied in diverse applications including fibre reinforced polymer composites, coatings, and molded parts. The polymer matrix provides processability and adaptability while the ferrite particles maintain magnetic functionality, significantly improving application versatility
Solution Approach 2:
Changing the ferrite particle size to less than 500 nm and dispersing it in polymer matrices transforms the material from a rigid ceramic suitable only for protected applications to a versatile composite that can be processed into various forms including coatings, composites, and molded parts, thereby expanding application versatility
3Strength
If ferrite is applied as a coating on substrate, then structural support is improved, but manufacturing complexity increases
Solution Approach 1:
The patent applies preliminary action by pre-dispersing ferrite particulates in the polymer matrix before application to the substrate. This pre-mixing step creates a ready-to-apply composite resin that can be directly coated, sprayed, or molded, eliminating the need for separate ferrite application and bonding steps, thereby reducing manufacturing complexity while maintaining structural support
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 ferrite composition enhances the structural rigidity and reduces the overall mass of the composite while maintaining magnetic properties, making it suitable for lightweight and strong applications in various structures such as vehicle panels and electronic equipment.
Implementation Method 1
Ferrite are ceramic compounds comprising iron oxides which have very advantageous magnetic properties
Data Source
AI summary
Ferrite compositions, particularly ferrite coated substrates and more particularly fiber plys coated with ferrites in fiber reinforced polymer composites (FRPC), and composites with a plurality of functionalized fiber layers, include a magnetic ferrite composition for coating a substrate, said composition comprising a resin, and dispersed therein ferrite particulates, wherein said ferrite particulates have an average longest dimension of less than 500 nm. The composition may be used to provide a ferrite composite structure comprising at least one fiber ply, with at least one layer of a magnetic ferrite composition deposed thereon, wherein said ply is substantially encapsulated in a binder matrix to form a fiber reinforced polymer composite.