3D Inorganic Composite Printing With Microwave Thermal Conversion

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Solution Overview

Problem

Existing additive manufacturing (AM) methods are limited by the use of single materials that do not change drastically during the process, resulting in a limited range of materials and structures, especially for inorganic materials, and traditional thermal conversion processes are slow and energy-intensive.

Innovation Solution

A method involving the use of resins containing monomers, oligomers, microwave susceptors, and metal salts to create 3D hydrogel structures, which are then thermally converted into 3D architected composites through microwave heating, allowing for the incorporation of metals, ceramics, and carbon composites with controlled microstructures and porosity.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If traditional thermal conversion processes are used to convert organic materials to inorganic materials, then the conversion is complete, but the process is slow and energy-intensive

Engineering Contradiction:

Improveconversion speedVSAvoidenergy consumption

Core Design Contradiction:

ProductivityVSUse of energy by moving object

Solution Approach 1:

The patent replaces traditional thermal field-based heating with microwave field-based heating. The microwave susceptor materials (metal particles, metal oxide particles, or carbon composite materials) absorb microwave energy and convert it to heat locally, enabling rapid and energy-efficient thermal conversion of the organic resin to inorganic materials.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

Solution Approach 2:

The patent introduces microwave susceptor materials that change the heating parameters from conventional thermal conduction to direct microwave absorption. This parameter change enables selective and rapid heating of specific regions containing the susceptor materials, dramatically reducing conversion time and energy consumption.

Inventive Principle:

Principle #35Parameter changes

2Adaptability or versatility

If single materials are used in additive manufacturing, then the process is simple, but the range of materials and structures is limited

Engineering Contradiction:

Improvematerial rangeVSAvoidprocess complexity

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent uses composite resin formulations containing multiple components: monomers/oligomers for the base resin, microwave susceptor materials for rapid heating, metal salts for metal formation, and pre-ceramic polymers for ceramic formation. This composite approach enables a wide range of final materials (metals, ceramics, composites) from a single additive manufacturing process.

Inventive Principle:

Principle #40Composite materials

Solution Approach 2:

The patent creates a universal additive manufacturing resin system that can produce multiple different inorganic materials (metals, ceramics, composites) by varying the composition of metal salts and pre-ceramic polymers in the resin, while using the same base resin and microwave heating process.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Adaptability or versatility

If materials are limited to certain states and compositions at each step, then the process is controlled, but the range of materials being produced is limited

Engineering Contradiction:

Improvematerial composition rangeVSAvoidmaterial state control

Core Design Contradiction:

Adaptability or versatilityVSManufacturing precision

Solution Approach 1:

The patent utilizes phase transitions during thermal conversion: the organic resin transitions from liquid to solid to gas, while metal salts transition from crystalline to molten to solid metal, and pre-ceramic polymers transition from organic to inorganic ceramic. These controlled parameter changes enable precise material transformation while expanding the range of producible materials.

Inventive Principle:

Principle #35Parameter changes

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

Enables the production of 3D architected metal and ceramic composites with nano-grains and microstructures efficiently, reducing grain growth and energy consumption, and facilitating recycling of metal-containing materials with controlled form factors.

Implementation Method 1

additively manufacturing a 3D hydrogel or organogel structure from the resin

Methodology Applied

Scientific EffectPhotopolymerization: Photopolymerisation

Implementation Method 2

thermally converting the optionally glazed, 3D hydrogel or organogel structure to a final product through microwave heating

Methodology Applied

Scientific EffectMicrowave heating: Dielectric Heating

Implementation Method 3

swelling the 3D hydrogel or organogel structure with an aqueous solution containing a metal salt or a metal complex

Methodology Applied

Scientific EffectDiffusion: Diffusion

Implementation Method 4

thermally converting the optionally glazed, 3D hydrogel or organogel structure to a final product

Methodology Applied

Scientific EffectThermal conversion: Pyrolysis

Data Source

PatentUS20250346741A1Additive manufacturing and post-treatment of inorganic materials

Publication Date: 2025.11.13 3D ARCHITECH INC

AI summary

Compositions and processes for producing additively manufactured and/or thermally converted composite articles in 3D form are disclosed. The final products are optionally (i) produced by closed-loop recycling processes, (ii) achieved by electroconversion processes, (ii) i glazed prior to thermal conversion, and/or (iv) exposed to energy efficient conversion techniques, such as microwave heating and/or combustion synthesis, to promote and/or preserve nanograin or micrograin morphology.