3D Printed Siloxane Articles with Integrated Conductivity
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Solution Overview
Problem
Current 3D printing technologies face challenges in creating three-dimensional articles with integrated electrically conductive and insulating materials that have minimal material mismatch, such as coefficient of thermal expansion (CTE) mismatch, while also offering variability in properties like color, transparency, hardness, and conductivity.
Innovation Solution
The process involves concurrently or sequentially depositing electrically conductive and insulating siloxane materials with a silicon oxide backbone, which can include particles, and are cured using electromagnetic radiation or heat, allowing for the creation of articles with specific properties like transparency, hardness, and conductivity, minimizing material mismatch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different materials are used for electrically conductive and insulating components, then functional properties are improved, but material mismatch (CTE mismatch) increases
Solution Approach 1:
The patent employs composite materials by incorporating conductive particles (such as metal, carbon, or ceramic particles) into an insulating polymer matrix. This creates a composite material that simultaneously provides electrical insulation from the polymer base and electrical conductivity through the dispersed conductive particles. The composite structure allows tuning of conductivity while maintaining compatibility with the insulating polymer, thus resolving the contradiction between achieving functional conductivity and minimizing material mismatch.
Solution Approach 2:
The invention applies local quality by creating regions with different conductive properties within the same polymer material. By selectively distributing conductive particles in specific areas or concentrations, the material exhibits localized conductivity where needed while maintaining insulation in other regions. This spatial variation in properties allows the same base material to serve multiple functional roles, reducing overall material mismatch.
2Adaptability or versatility
If multiple materials with different properties are used, then property variability is improved, but manufacturing complexity increases
Solution Approach 1:
The patent achieves universality by developing a single insulating polymer platform that can be modified with different conductive particle types and concentrations to create multiple material variants. The same base polymer chemistry (such as silicone, epoxy, or polyester) serves as a universal matrix that can accommodate various conductive additives, allowing one manufacturing process to produce materials with diverse properties including different conductivity levels, colors, transparencies, and hardesses without requiring entirely different material systems.
Solution Approach 2:
The invention utilizes parameter changes by varying the concentration, size, shape, and type of conductive particles within the same polymer matrix to achieve different material properties. By adjusting these parameters rather than changing the fundamental polymer chemistry, the manufacturing process remains relatively simple while producing materials with widely varying electrical, optical, and mechanical properties. This parameter-based tuning reduces manufacturing complexity compared to synthesizing entirely different polymers for each application.
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 enables the production of 3D printed articles with improved material compatibility and varied properties, facilitating the creation of complex electrical components and modular devices with enhanced conductivity and transparency.
Implementation Method 1
Both the electrically conductive and electrically insulating materials comprise a siloxane polymer that is cured upon deposition by electromagnetic radiation or heat
Data Source
AI summary
Methods and materials are dislosed for making three dimensional articles via 3d printing. The methods can include printing both electrically insulating and electrically conducting portions, transparent, reflective or opaque portions, transparent portions having different refractive indices, portions of different colors, and where the various deposited portions are UV or heat curable, and optionally comprise particles, such as metallic particles in electrically conductive portions and ceramic particles in electrically insulating portions. A variety of 3D articles can be made, such as transparent articles such as eyeglasses, or electronics articles such as portions of smartphones, tablets or the like.