Multifunctional Composite Panel With Alternating Conductive Layers
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Solution Overview
Problem
Conventional composite panels fabricated with fibrous reinforcing materials like CFRP and GFRP suffer from inconsistencies, anisotropic strength, high cost, and the need for costly post-treatment for electromagnetic protection, which affects their mechanical strength and manufacturing efficiency.
Innovation Solution
A method for fabricating multifunctional composite panels using alternating layers of conductive organic and inorganic materials, such as aluminum oxide, graphene, and conductive polymers, which are deposited via a layer deposition process to achieve isotropic strength, reduced delamination, and integrated photovoltaic capabilities, eliminating the need for structural fibers and post-treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fibrous reinforcing materials (CFRP, GFRP) are used to increase strength, then mechanical strength is improved, but manufacturing consistency and reproducibility deteriorate
Solution Approach 1:
The patent transitions from fibrous reinforcing materials to nanoscale particulate fillers (carbon nanotubes, graphene, nanoclay) dispersed in a polymer matrix. This parameter change in filler size and morphology enables isotropic strength distribution while improving manufacturing consistency, as the nanoscale particles can be more uniformly distributed throughout the matrix compared to traditional fibrous materials.
Solution Approach 2:
The patent employs a composite material system combining polymer matrix with multiple types of nanoscale fillers (carbon nanotubes, graphene, nanoclay). This multi-component composite approach achieves both enhanced mechanical strength and improved manufacturing reproducibility by leveraging the synergistic effects of different nanofillers with complementary properties.
2Strength
If multiple sheets of fibrous reinforcing materials are used to improve consistency and isotropic strength, then mechanical consistency is improved, but cost and weight increase
Solution Approach 1:
The patent uses nanoscale particulate fillers instead of multiple fibrous sheets, changing the dimensional parameter from macro-scale fibers to nano-scale particles. This enables achieving isotropic strength properties in a single-layer thin film structure, significantly reducing the quantity of material needed while maintaining mechanical performance.
Solution Approach 2:
The patent transitions from a multi-layer sheet structure (three-dimensional stacking of fibrous sheets) to a single-layer thin film with nanoscale reinforcement (two-dimensional structure). This dimensional change achieves isotropic strength through uniform nanoscale particle distribution in the polymer matrix, eliminating the need for multiple sheets and reducing overall material quantity.
3Strength
If fibrous reinforcing materials are used, then structural strength is improved, but electric conductivity deteriorates
Solution Approach 1:
The patent incorporates conductive nanoscale fillers (carbon nanotubes, graphene) into the polymer matrix. These nanoscale conductive particles form percolation networks within the insulating polymer, providing inherent electrical conductivity while simultaneously reinforcing the mechanical structure. This eliminates the need for separate conductive layers or post-treatment processes.
4Object-affected harmful factors
If post-treatment is applied to provide electromagnetic protection, then electromagnetic shielding is improved, but manufacturing time and cost increase
Solution Approach 1:
The patent merges multiple functions (structural reinforcement, electrical conductivity, and electromagnetic shielding) into a single integrated thin film layer. The conductive nanoscale fillers dispersed in the polymer matrix simultaneously provide mechanical strength, electrical conductivity, and electromagnetic interference shielding, eliminating the need for separate post-treatment processes and reducing manufacturing steps.
Solution Approach 2:
The patent creates a multifunctional thin film material that performs multiple functions simultaneously: structural reinforcement through nanoscale filler dispersion, electrical conductivity through conductive filler networks, and electromagnetic shielding through the conductive network's ability to block electromagnetic waves. This universal material eliminates the need for separate treatment processes.
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 method results in composite panels with improved isotropic stiffness and strength, reduced inconsistencies, and integrated photovoltaic functionality, offering enhanced mechanical properties and reduced manufacturing costs while providing structural support and electromagnetic protection.
Implementation Method 1
forming a plurality of photovoltaic layers adjacent the plurality of structural layers, wherein the plurality of photovoltaic layers is configured to convert light energy into electrical power
Implementation Method 2
The plurality of structural layers or the plurality of photovoltaic layers are formed from a layer deposition process
Data Source
AI summary
A multifunctional composite panel and a system for fabricating the multifunctional composite panel are disclosed. The multifunctional composite panel may include a plurality of structural layers and a plurality of photovoltaic layers disposed adjacent the plurality of structural layers. The structural layers may include a plurality of alternating layers where each of the alternating layers includes a first layer and a second layer. The first layer may include one or more polymers and the second layer may include one or more inorganic materials. The system for fabricating the multifunctional composite panel may include a based configured to support the multifunctional composite panel and a plurality of application heads disposed proximal the based and configured to form layers of the multifunctional composite panel.