3D Printing Composition Using Magnetic Particle Induction Heating
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Solution Overview
Problem
Conventional 3D printing methods face challenges such as imprecise shape formation, non-uniform curing, and physical property issues due to heat-induced phase separation and shrinkage in thermosetting types, and equipment size limitations and low hardness in photo-curable types.
Innovation Solution
A 3D printing composition comprising magnetic particles with multi-magnetic domains and gas-containing particles, which generates vibrational heat upon magnetization reversal, enabling uniform curing through electromagnetic induction heating, thereby overcoming the limitations of existing methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If thermosetting type 3D printing uses heat curing, then the manufacturing process is simple, but the shape precision deteriorates due to heat shrinkage and phase separation
Solution Approach 1:
The patent replaces the conventional thermal field (heat-based curing) with a magnetic field-based curing system. Magnetic particles embedded in the resin generate heat through magnetic friction when exposed to an alternating magnetic field, enabling curing without external thermal equipment. This substitution eliminates heat shrinkage and phase separation issues while maintaining manufacturing simplicity.
Solution Approach 2:
The patent changes the curing mechanism from thermal conduction to magnetic field interaction. By controlling the frequency and intensity of the alternating magnetic field, the curing process can be precisely regulated, improving shape precision while maintaining process simplicity. The magnetic particles' response to magnetic field parameters enables controlled curing without bulk heating.
2Manufacturing precision
If photo-curable type 3D printing is used, then shape precision is improved, but equipment size and storage requirements increase
Solution Approach 1:
The patent substitutes the complex optical curing system (requiring UV lamps, optical paths, and precise positioning) with a magnetic field curing system. The magnetic field can penetrate the resin uniformly without requiring complex optical equipment, significantly reducing equipment size while maintaining shape precision through controlled magnetic particle heating.
Solution Approach 2:
The patent introduces magnetic particles as an intermediary medium that converts magnetic field energy into localized heat for curing. This intermediary approach eliminates the need for direct optical or thermal contact, simplifying the equipment structure while achieving precise curing through the magnetic particles' distributed heating effect.
3Productivity
If electromagnetic induction heating is used for curing, then curing speed is improved, but temperature difference between contact surface and inside causes physical property deterioration
Solution Approach 1:
The patent segments the heating function to the microscopic level by embedding discrete magnetic particles throughout the resin. Each particle generates heat independently through magnetic friction, creating a distributed heating network that eliminates temperature gradients between the contact surface and interior, while maintaining fast curing speed.
Solution Approach 2:
The patent implements local quality by enabling each magnetic particle to generate heat independently at its specific location through magnetic field interaction. This localized heating approach ensures uniform temperature distribution throughout the resin, preventing the temperature differences that cause physical property deterioration while maintaining high curing speed.
4Productivity
If microwaves are used for heating, then curing efficiency is improved, but safety deteriorates due to risk of exposure to human body
Solution Approach 1:
The patent uses magnetic particles as an intermediary that converts magnetic field energy into heat locally within the resin. This intermediary mechanism eliminates the need for direct microwave exposure, maintaining high curing efficiency through the particles' magnetic friction heating while removing the safety hazards associated with microwave radiation exposure to operators.
Solution Approach 2:
The patent converts the potentially harmful effect of magnetic field exposure into a beneficial localized heating mechanism. The magnetic particles, which could be considered foreign additives, actually serve as the curing mechanism itself, generating heat through magnetic friction that cures the resin efficiently without requiring dangerous microwave radiation.
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 solution achieves precise and uniform curing of 3D printed objects with improved physical properties, reducing hysteresis loss and ensuring stable curing from within, resulting in enhanced performance and safety compared to conventional techniques.
Implementation Method 1
the composition is applied in three dimensions to form a three-dimensional shape, and vibrational heat is generated from the magnetic particles through the application of a magnetic field, whereby the composition for 3D printing can be uniformly cured
Implementation Method 2
vibrational heat is generated from the magnetic particles through the application of a magnetic field
Data Source
AI summary
The present application relates to a composition for 3D printing, a 3D printing method using the same, and a three-dimensional shape comprising the same, and provides an ink composition capable of realizing precise formation of a three-dimensional shape and uniform curing physical properties of the three-dimensional shape.