Dielectric Elastomer Precursor Fluid for High Dielectric Constant
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Solution Overview
Problem
Existing dielectric elastomer composite materials face challenges in achieving a high dielectric constant while maintaining a low elastic modulus and high optical transparency, as adding fillers to increase dielectric constant often results in higher elastic modulus and lower breakdown voltage.
Innovation Solution
A dielectric elastomer precursor fluid comprising an elastomer matrix, an ionic liquid, and a solvent with a specific volume fraction, which improves conductivity and fluidity, allowing for the preparation of composite materials with high dielectric constant, low elastic modulus, and high optical transparency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If fillers with high dielectric constant are added to increase the dielectric constant of composite materials, then the dielectric constant is improved, but the elastic modulus is greatly increased
Solution Approach 1:
The patent changes the physical state of the dielectric additive from solid filler particles to liquid ionic liquid, which fundamentally alters how the material interacts with the elastomer matrix. This parameter change allows the dielectric constant to be increased without the rigid structural reinforcement that solid fillers provide, thereby avoiding the increase in elastic modulus.
Solution Approach 2:
The patent utilizes the liquid phase of ionic liquid at room temperature to achieve dielectric enhancement. By employing a liquid phase rather than solid phase filler, the material can penetrate and distribute within the elastomer matrix more uniformly, providing dielectric constant enhancement without the mechanical stiffening effect of solid particles.
2Area of stationary object
If fillers with high dielectric constant are added to increase the dielectric constant of composite materials, then the dielectric constant is improved, but the breakdown voltage is lowered
Solution Approach 1:
The patent changes the physical state of the dielectric additive from solid filler particles to liquid ionic liquid, which fundamentally alters how the material interacts with the elastomer matrix. This parameter change allows the dielectric constant to be increased without the rigid structural reinforcement that solid fillers provide, thereby avoiding the increase in elastic modulus.
Solution Approach 2:
The patent utilizes the liquid phase of ionic liquid at room temperature to achieve dielectric enhancement. By employing a liquid phase rather than solid phase filler, the material can penetrate and distribute within the elastomer matrix more uniformly, providing dielectric constant enhancement without the mechanical stiffening effect of solid particles.
3Ease of manufacture
If conventional dielectric elastomers are used, then the material is easy to manufacture, but the relative dielectric constant is low (only 2-8.6)
Solution Approach 1:
The patent creates a composite material system combining elastomer matrix with ionic liquid additives. This composite approach allows the base elastomer to maintain its ease of manufacture and processing, while the ionic liquid component provides the enhanced dielectric constant property, achieving both manufacturability and high dielectric performance.
Solution Approach 2:
The ionic liquid acts as an intermediary substance between the elastomer matrix and the desired high dielectric constant property. It mediates the enhancement of dielectric performance without requiring complex manufacturing process changes, maintaining the simplicity of conventional elastomer processing while achieving superior electrical properties.
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 solution effectively balances high dielectric constant with low elastic modulus and high optical transparency, enhancing the performance of dielectric elastomer composite materials for flexible devices and light-emitting devices by improving conductivity and fluidity.
Implementation Method 1
the precursor fluid has the advantages of a high conductivity
Implementation Method 2
dielectric elastomer materials can be used in the manufacture of flexible actuators... can convert mechanical energy into electrical signals or electrical energy
Implementation Method 3
a high electric field is applied, and the dielectric elastomer actuator is deformed by Maxwell stress
Data Source
AI summary
The present disclosure relates to the field of dielectric elastomers. In particular, provided are a dielectric elastomer precursor fluid, a preparation method therefor and the use thereof, a dielectric elastomer composite material, a flexible device, and a light-emitting device. The dielectric elastomer precursor fluid comprises an elastomer matrix, an ionic liquid and a solvent, wherein the volume fraction of the ionic liquid and the solvent is 5-45%. The dielectric elastomer precursor fluid has the advantages of a high conductivity, a high transparency and a good fluidity, and is beneficial for preparing a dielectric elastomer composite material having a high dielectric constant, a low elastic modulus and a high optical transparency, thus fully solving the problem that a high dielectric constant cannot be balanced with a low elastic modulus and a high optical transparency in a dielectric elastomer.