Ferromagnetic Polymer Alignment for High-Flux Soft Magnetic Composites
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current soft magnetic composites (SMCs) suffer from low flux density and low permeability due to the polymer binder reducing the interaction with magnetic fields.
Innovation Solution
The application of a magnetic field to align ferromagnetic polymer material into a unified alignment direction, enhancing the alignment of ferromagnetic powders and polymers, thereby increasing flux density and permeability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If polymer binders are used to bind ferromagnetic powders in soft magnetic composites, then the composite structure is stabilized and becomes rigid, but the permeability and magnetization are reduced due to the polymer's lack of interaction with magnetic fields
Solution Approach 1:
The patent changes the fundamental parameter of the binder material from conventional non-ferromagnetic polymer to ferromagnetic polymer. This parameter change transforms the binder from a magnetically inert component into an active ferromagnetic material that contributes to the overall magnetization, thereby resolving the contradiction between structural stability and magnetization levels.
Solution Approach 2:
The patent creates a composite material system where ferromagnetic polymer and ferromagnetic powder particles work synergistically. The ferromagnetic polymer matrix combines with dispersed ferromagnetic particles to form a composite that maintains both structural integrity and high magnetization, overcoming the limitations of traditional polymer-bound SMCs.
2Quantity of substance
If ferromagnetic polymer precursors are aligned using a magnetic field, then flux density and permeability are significantly improved, but the manufacturing process complexity increases
Solution Approach 1:
The patent applies magnetic field alignment during the precursor stage, before the ferromagnetic polymer fully cures and hardens. By performing the alignment action preliminarily when the material is still in a more compliant state, the process achieves high flux density without requiring complex post-processing equipment or multiple manufacturing steps.
Solution Approach 2:
The patent replaces mechanical alignment methods with magnetic field alignment. Instead of using physical forces, fixtures, or mechanical pressing to orient the ferromagnetic materials, a magnetic field is applied to achieve alignment, simplifying the manufacturing system while achieving superior magnetic properties.
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
This approach significantly improves the flux density and permeability of SMCs, achieving up to 100% alignment of ferromagnetic materials, which enhances the magnetic properties and efficiency of applications like motors and generators.
Implementation Method 1
applying a magnetic field to cause the ferromagnetic precursors to align to a unified crystallographic orientation
Implementation Method 2
Ferromagnetic materials have several uses, including transformers and motors. Ferromagnetic materials are generally divided into three classes of materials that include soft magnetic composites, soft magnetic alloys, also known as electrical steels, and soft magnetic oxides.
Data Source
AI summary
A shaped structure having a fixed ferromagnetic polymer material aligned to a unified alignment direction. The shaped structure may include ferromagnetic particles suspended in the fixed ferromagnetic polymer material, and the ferromagnetic particles are aligned to the unified alignment direction. A method of manufacturing a structure includes forming ferromagnetic polymer precursors, dispensing the ferromagnetic precursors into a shaped structure, applying a magnetic field to cause the ferromagnetic precursors to align to a unified crystallographic orientation, and finishing the shaped structure to form a ferromagnetic polymer with a fixed unified crystallographic orientation and produce the structure.