Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Haotian Li; Dong Zhang; Zechen Li; Leyi Li; Jiachen Liu; Yugui Li

doi:10.3791/60916

Aplicação de um agente de acoplamento para melhorar as propriedades dielétricas de nanocompactos ...

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JoVE Journal Engineering

Application of a Coupling Agent to Improve the Dielectric Properties of Polymer-Based Nanocomposites

Aplicação de um agente de acoplamento para melhorar as propriedades dielétricas de nanocompactos baseados em polímeros

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06:34 min

September 19, 2020

DOI: 10.3791/60916-v

Haotian Li^1,2,3, Dong Zhang⁴, Zechen Li⁴, Leyi Li⁵, Jiachen Liu¹, Yugui Li^1,2

¹Taiyuan University of Science and Technology, ²Heavy Machinery Engineering Research Center of the Ministry of Education, ³Laboratory of Magnetic and Electric Functional Materials and Applications,The Key Laboratory of Shanxi Province, ⁴Beijing Institute of Aerospace System Engineering, ⁵Department of Electrical and Information Engineering,Sichuan College of Architectural Technology

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Overview

This study presents a low-cost solution-casting process to enhance the compatibility between polymer matrices and surface modified BaTiO₃ fillers. The method effectively improves the energy density of polymer-based nanocomposites.

Key Study Components

Area of Science

Polymer Science
Nanocomposites
Energy Storage Materials

Background

Surface modification of ceramic fillers can enhance their compatibility with polymer matrices.
Improved wettability at the ceramic-polymer interface is crucial for performance.
High-performance film capacitors require flexible composite materials.
Commercial coupling agents can be used to modify ceramic nanofillers.

Purpose of Study

To develop a method for improving the energy storage performance of polymer-based nanocomposites.
To investigate the effects of coupling agents on the properties of ceramic-polymer interfaces.
To provide a cost-effective solution for producing flexible composites.

Methods Used

Preparation of KH550 solution with ethanol-water solvent.
Ultrasonication treatment of BaTiO₃ nanoparticles in KH550 solutions.
Coating of BT nanoparticles with varying amounts of coupling agent.
Evaporation of solvent at controlled temperatures in a vacuum oven.

Main Results

Good wettability was achieved at the ceramic-polymer interface.
Enhanced energy storage performances were observed with optimal coupling agent amounts.
The method is suitable for the preparation of flexible composites.
Results indicate potential applications in high-performance film capacitors.

Conclusions

The developed solution-casting process is effective and low-cost.
Surface modification significantly improves composite performance.
This approach can facilitate advancements in energy storage technologies.

Frequently Asked Questions

What is the main focus of this study?

The study focuses on enhancing the compatibility of polymer-based nanocomposites using surface modified BaTiO₃ fillers.

How does surface modification affect energy storage?

Surface modification improves wettability and enhances the energy storage performance of the composites.

What method was used for the surface modification?

A commercial coupling agent was used to modify the surface of the ceramic nanofillers.

What are the potential applications of this research?

The research has potential applications in the production of high-performance film capacitors.

Is the method described cost-effective?

Yes, the solution-casting process is described as simple and low-cost.

Aqui, demonstramos um processo simples e de baixo custo de fundição de soluções para melhorar a compatibilidade entre o enchimento e a matriz de nanocompactos à base de polímero usando preenchimentos BaTiO₃ modificados pela superfície, que podem efetivamente aumentar a densidade energética dos compósitos.

Foi comprovado que o uso de agente de acoplamento comercial poderia modificar a superfície dos nanofiladores cerâmicos, portanto, foi alcançada boa capacidade na interface cerâmica-polímero, e os desempenhos aprimorados de armazenamento de energia foram obtidos por uma quantidade adequada de agente de acoplamento. O método desenvolvido por este trabalho poderia ser utilizado na preparação de compósitos flexíveis, o que é altamente desejável para a produção de capacitores de filme de alto desempenho. Prepare a solução de KH550 com 95 por cento de peso solvente de água de etanol por 15 minutos ultra-sonicação.

Trate as nanopartículas BT em soluções KH550 por 30 minutos de ultra-sônica. Neste processo, meça os pesos dos preenchimentos de nanopartículas KH550 e BT revestidos com um, dois, três, quatro e cinco por cento de peso do agente de acoplamento na solução diluída KH550 com um volume de cinco mililitros. Evaporar o solvente água-etanol da matriz a 80 graus C por cinco horas, e depois a 120 graus C por 12 horas em um forno a vácuo.

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