EMI Shielding Material Composition for 3D Formability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing electromagnetic wave shielding materials struggle to balance high shielding ability with excellent formability, particularly in three-dimensional forming processes, leading to potential defects and breakage.
Innovation Solution
An electromagnetic wave shielding material comprising magnetic layers with a resin content of 5-40% by mass and a 150° C.-tensile test elongation rate of 5.0-150.0%, incorporating pressure-sensitive adhesive layers and optionally resin and metal layers, with specific magnetic particles and alignment to enhance both shielding and formability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the resin content in the magnetic layer is increased to improve formability, then the elongation rate increases, but the shielding ability decreases
Solution Approach 1:
The patent optimizes the resin content parameter within a specific range (5-40 mass%) to achieve the desired balance between formability and shielding ability. By controlling this critical parameter, the magnetic layer maintains sufficient magnetic particles for shielding while having enough resin for adequate elongation rate.
Solution Approach 2:
The patent creates a composite magnetic layer structure combining magnetic particles and resin in specific proportions. This composite approach allows the material to exhibit both magnetic shielding properties (from magnetic particles) and formability (from resin), resolving the contradiction between these two opposing requirements.
2Object-affected harmful factors
If the resin content in the magnetic layer is decreased to improve shielding ability, then the magnetic particle concentration increases, but the formability deteriorates
Solution Approach 1:
The patent establishes a lower bound for resin content (5 mass%) to ensure minimum formability requirements are met. This parameter control prevents excessive magnetic particle concentration that would compromise the elongation rate and formability of the shielding material.
3Ease of manufacture
If the elongation rate is increased to improve formability, then the material becomes more flexible, but the structural integrity during shielding operation may be compromised
Solution Approach 1:
The patent defines an optimal elongation rate range (5.0-150.0%) that balances formability and structural integrity. This parameter optimization ensures the material is flexible enough for three-dimensional forming while maintaining sufficient strength for shielding applications.
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 material achieves high electromagnetic wave shielding with improved formability, reducing the likelihood of defects during three-dimensional forming processes.
Implementation Method 1
An electromagnetic wave shielding material is capable of exhibiting the performance of shielding electromagnetic waves (shielding ability) by reflecting electromagnetic waves incident on the shielding material by the shielding material and/or by attenuating the electromagnetic waves in the inside the shielding material
Implementation Method 2
one or more pressure-sensitive adhesive layers
Data Source
AI summary
There are provided an electromagnetic wave shielding material including one or more magnetic layers containing magnetic particles and a resin, where a content of the resin in the magnetic layer is 5% by mass or more and less than 40% by mass; and one or more pressure-sensitive adhesive layers, in which an elongation rate determined by a tensile test at 150° C. is 5.0% or more and less than 150.0%, as well as an electronic component and an electronic apparatus which include the electromagnetic wave shielding material.