Exfoliated Graphene Resin Composite Dispersibility
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Solution Overview
Problem
Exfoliated graphene, lacking functional groups, exhibits insufficient dispersibility in resins due to inadequate coating of secondary particles, leading to suboptimal properties in composite materials.
Innovation Solution
A method involving the disintegration of secondary particles of exfoliated layered substances in a solution containing a coating substance, followed by dissolving the coating substance in a dispersion of the exfoliated layered substance, to enhance dispersibility and improve resin properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If exfoliated graphene is used without functional groups, then the material maintains its intrinsic properties, but dispersibility in resin is insufficient due to inadequate coating of secondary particles
Solution Approach 1:
The patent applies preliminary action by performing ultrasonic treatment before coating to disintegrate secondary particles of exfoliated graphene. This pre-treatment creates a more uniform dispersion state, enabling subsequent coating processes to effectively cover individual particles rather than aggregated structures, thereby improving overall dispersibility in resin matrices
Solution Approach 2:
The patent introduces an intermediary approach by using a multi-step process involving dispersion aids or surface treatments that facilitate coating adhesion to exfoliated graphene particles. This intermediary mechanism bridges the gap between the hydrophobic graphene surface and the resin matrix, improving wetting and coating uniformity without requiring functional group modification
2Manufacturing precision
If secondary particles of exfoliated layered substance are not disintegrated, then the production process is simpler, but the coating substance cannot sufficiently coat the inside of secondary particles
Solution Approach 1:
The patent applies preliminary action by performing ultrasonic treatment before coating to disintegrate secondary particles of exfoliated graphene. This pre-treatment creates a more uniform dispersion state, enabling subsequent coating processes to effectively cover individual particles rather than aggregated structures, thereby improving overall dispersibility in resin matrices
Solution Approach 2:
The patent applies segmentation by breaking down secondary particles into smaller, more uniformly distributed primary particles through ultrasonic treatment. This segmentation increases the surface area available for coating and ensures more consistent coating thickness across all particles, improving manufacturing precision
3Ease of operation
If exfoliated graphene aggregates, then the material is easier to handle, but dispersibility in matrix deteriorates and sufficient properties cannot be obtained
Solution Approach 1:
The patent applies preliminary action by performing ultrasonic treatment before coating to disintegrate secondary particles of exfoliated graphene. This pre-treatment creates a more uniform dispersion state, enabling subsequent coating processes to effectively cover individual particles rather than aggregated structures, thereby improving overall dispersibility in resin matrices
Solution Approach 2:
The patent applies parameter changes by modifying the physical state and surface characteristics of exfoliated graphene through controlled ultrasonic treatment and coating processes. These parameter changes include particle size reduction, surface energy modification, and coating thickness control, which collectively improve dispersibility while maintaining handling characteristics
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 significantly improves the dispersibility and mechanical properties, such as impact resistance, of the exfoliated graphene in resin composites, ensuring better performance and economic efficiency.
Implementation Method 1
a coating substance coating a surface of the exfoliated layered substance
Data Source
AI summary
Provided is a method for producing a composite material in which the dispersibility of an exfoliated layered substance in a resin or the like is improved and with which a synthetic resin having significantly improved properties, such as impact resistance, can be obtained. A method for producing a composite material including an exfoliated layered substance and a coating substance coating a surface of the exfoliated layered substance includes a disintegrating step of disintegrating secondary particles of an exfoliated layered substance in a solution containing a coating substance, or a method for producing a composite material including an exfoliated layered substance and a coating substance coating a surface of the exfoliated layered substance includes a disintegrating step of disintegrating secondary particles of an exfoliated layered substance in a solvent and a dissolving step of dissolving a coating substance in a dispersion containing the exfoliated layered substance that has been disintegrated.