MXene-Polymer Composite Composition for Conductivity and Strength
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Solution Overview
Problem
Existing MXene/polymer composite materials struggle to achieve both high electrical conductivity and high strength simultaneously.
Innovation Solution
A conductive composite material comprising MXene particles with a specific surface modifier and a polymer material that includes hydrogen acceptors and donors, forming hydrogen bonds to enhance affinity and conductivity while maintaining strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If MXene content is increased to improve electrical conductivity, then electrical conductivity is improved, but mechanical strength deteriorates
Solution Approach 1:
The patent changes the chemical parameters of the polymer material by selecting specific functional groups (hydroxyl groups, carboxyl groups, or amino groups) that can form strong interfacial interactions with MXene surfaces. This parameter change enables the polymer to effectively bind MXene particles, maintaining mechanical strength while allowing high MXene content for electrical conductivity.
Solution Approach 2:
The patent creates a composite material system where MXene particles are dispersed in a polymer matrix with specific functional groups. The composite structure leverages the high electrical conductivity of MXene while the polymer matrix provides mechanical strength, achieving both properties simultaneously through proper material selection and interface design.
2Strength
If polymer content is increased to improve mechanical strength, then mechanical strength is improved, but electrical conductivity deteriorates
Solution Approach 1:
The patent applies local quality by concentrating the polymer with functional groups at the interface between MXene particles. This localized polymer distribution ensures strong interfacial bonding for mechanical strength while minimizing the overall polymer content that would otherwise insulate the conductive MXene network.
Solution Approach 2:
The patent changes the chemical composition parameters of the polymer to include specific functional groups that enhance interfacial adhesion. This allows the polymer to serve dual purposes: providing mechanical strength through strong bonding while maintaining electrical conductivity by minimizing interference with the MXene conductive pathways.
3Reliability
If MXene particles are aggregated to improve conductivity network, then electrical conductivity is improved, but homogeneity deteriorates
Solution Approach 1:
The patent uses the polymer with functional groups as an intermediary substance that mediates between MXene particles. The polymer adsorbs onto MXene surfaces through hydrogen bonding or other interactions, preventing direct aggregation while still allowing conductive pathways to form, thus maintaining both conductivity and homogeneity.
Solution Approach 2:
The patent creates a porous or networked structure where MXene particles are distributed within the polymer matrix. This structure allows conductive pathways to form through the porous network while maintaining uniform distribution, preventing large-scale aggregation that would compromise homogeneity.
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 composite material achieves high electrical conductivity of 280 S/cm or more, with a film thickness of 5 μm, while maintaining high strength, suitable for applications like electrodes and electromagnetic shields.
Implementation Method 1
a polymer material that includes a hydrogen acceptor that is at least one selected from the group consisting of a fluorine atom, a chlorine atom, an oxygen atom, or a nitrogen atom, and a hydrogen donor that is a hydroxyl group and/or a secondary amino group
Data Source
AI summary
A conductive composite material that includes: particles of a layered material including one or plural layers, wherein the one or plural layers include a layer body represented by: MmXn, where M is at least one metal of Group 3, 4, 5, 6, or 7, X is a carbon atom, a nitrogen atom, or a combination thereof, n is not less than 1 and not more than 4, m is more than n but not more than 5, and a modifier or terminal T exists on a surface of the layer body, where T is at least one of a hydroxyl group, a fluorine atom, a chlorine atom, an oxygen atom, or a hydrogen atom; and a polymer material that includes a hydrogen acceptor and a hydrogen donor, a ratio of the particles of the layered material is more than 19% by volume but not more than 95% by volume.