Magnetic Curable Resin Composition for Uniform Internal Heating
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional curable compositions face challenges in achieving uniform curing and desired physical properties, especially in complex shapes, due to insufficient heat transfer and potential resin damage from external heat sources, and they require high fluidity which can lead to prolonged processing times and reduced curing efficiency.
Innovation Solution
A curable composition incorporating a magnetic body that generates heat through magnetic reversal vibrations in an external alternating magnetic field, allowing for low viscosity and efficient curing with minimal shrinkage, even in narrow or complex geometries, while maintaining desired physical properties such as high dielectric breakdown strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If external heat sources (hot air or hot plate) are used to cure the composition, then curing can be achieved, but heat transfer to the interior is insufficient causing curing heterogeneity and potential resin damage
Solution Approach 1:
The patent utilizes magnetic reversal vibration of magnetic bodies within the composition when exposed to an external alternating magnetic field. This vibration generates internal friction and heat directly within the composition, enabling uniform heating throughout the material without relying on external heat conduction, thereby resolving the curing heterogeneity issue while preventing resin damage
Solution Approach 2:
The patent replaces the conventional thermal conduction-based heating system with a magnetic field-induced vibrational heating system. The alternating magnetic field causes magnetic bodies to vibrate and generate heat internally, substituting the external heat transfer mechanism with an internal energy conversion mechanism that directly transforms electromagnetic energy into thermal energy within the composition
2Shape
If the composition viscosity is reduced to achieve high fluidity for narrow or complex shapes, then filling capability is improved, but process time increases and curing degree deteriorates
Solution Approach 1:
The magnetic reversal vibration generates internal heat that rapidly increases the temperature throughout the composition, accelerating the curing reaction kinetics. This allows the composition to cure quickly even at low viscosities required for filling complex shapes, eliminating the trade-off between fluidity and curing speed
Solution Approach 2:
The patent changes the temperature parameter dynamically through magnetic field-induced heating. By controlling the magnetic field intensity and frequency, the composition can be heated to optimal curing temperatures rapidly, enabling fast curing of low-viscosity formulations that would otherwise require prolonged processing times
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 composition achieves rapid and uniform curing with excellent filling rates and desired physical properties, such as high dielectric breakdown strength, in complex shapes without significant shrinkage, enhancing its applicability in various applications like electric motors.
Implementation Method 1
the magnetic body is selected so as to be capable of generating heat by a magnetic reversal vibration phenomenon through an external alternating magnetic field
Data Source
AI summary
A curable composition includes a curable resin and a magnetic body, wherein the magnetic body comprises magnetic particles and a surface treatment agent present on a surface of the magnetic particles. The curable composition has low viscosity, and fluidity, and capable of effectively cured without causing curing shrinkage or the like to form a cured product having desired physical properties.