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A liquid metal/polymer composite dielectric material and its preparation method

A liquid metal and dielectric material technology, applied in the field of composite materials, can solve problems such as difficulty in meeting performance requirements and degradation of material mechanical properties, achieve excellent flexibility and elasticity, improve mechanical properties, and facilitate processing and molding

Active Publication Date: 2022-04-29
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although increasing the loading of these inorganic materials can improve the dielectric properties of the material, it will also lead to a significant decrease in the mechanical properties of the material.
Therefore, although the electrochemical and mechanical properties of polymer composite dielectric materials blended with rigid inorganic materials have been improved to a certain extent, it is still difficult to meet the increasingly high performance requirements of electronic materials in the rapidly developing electronics industry. Therefore, it is still very important to in-depth research and development of polymer composite dielectric materials with better performance

Method used

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  • A liquid metal/polymer composite dielectric material and its preparation method
  • A liquid metal/polymer composite dielectric material and its preparation method
  • A liquid metal/polymer composite dielectric material and its preparation method

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The preparation method of liquid metal / polymer composite dielectric material, concrete steps are as follows:

[0035] (1) Weigh 3g of acrylic acid in a small sample bottle at room temperature, then add 12g of deionized water, mix well and add 0.17g of gallium-indium alloy to it; wherein, the mass ratio of gallium-indium in gallium-indium alloy is 3:1g / g.

[0036] (2) The sample in step (1) is placed in a cell disruptor for ultrasonic dispersion, treated in an ice bath, and the ultrasonic time is 10 minutes, and the power is 300W (see figure 1 );

[0037] (3) The dispersion in step (2) was shaken on a shaker for 20 minutes, and then transferred to a plastic petri dish with a diameter of 6 mm, sealed and stored flat for 7 days to obtain a liquid metal / polymer composite dielectric material.

[0038] The material exhibits good plasticity during preparation (see figure 2 ) and then utilize E4980A Agilent instrument and 609B ferroelectric instrument to test the dielectri...

Embodiment 2

[0041] A preparation method of a liquid metal / polymer composite dielectric material, the specific steps are as follows:

[0042] (1) Weigh 4g of acrylic acid in a small sample bottle at room temperature, add 12g of deionized water, and add 0.2g of gallium metal to it after mixing;

[0043] (2) The sample in step (1) is placed in a cell disruptor for ultrasonic dispersion, treated in an ice bath, and the ultrasonic time is 15 minutes, and the power is 200W;

[0044] (3) The dispersion in step (2) was shaken on a shaker for 30 minutes, then transferred to a plastic petri dish with a diameter of 6 mm, sealed and stored flat for 14 days to obtain a liquid metal / polymer composite dielectric material.

[0045] Perform performance tests on the composite material obtained in the embodiment: the elongation at break of the liquid metal / polymer composite dielectric material is about 680%, and the toughness can reach 3.54MJ / m 3 The dielectric constant is 8.5 (25°C, 10kHz), and the prepar...

Embodiment 3

[0047] A liquid metal / polymer composite dielectric material, the specific steps are as follows:

[0048](1) Weigh 2.4g of acrylamide into a small sample bottle at room temperature, add deionized water to a total mass of 16g, add 52mg of N,N-methylenebisacrylamide after the acrylamide is fully dissolved, dissolve and mix Add 0.14g gallium-indium alloy to it after mixing; wherein, the mass ratio of gallium-indium in the gallium-indium alloy is 3:2;

[0049] (2) The sample in step (1) is placed in a cell disruptor for ultrasonic dispersion, treated in an ice bath, and the ultrasonic time is 20 minutes, and the power is 300W;

[0050] (3) The dispersion in step (2) was shaken on a shaker for 30 minutes, then transferred to a plastic petri dish with a diameter of 6 mm, sealed and stored flat for 7 days to obtain a liquid metal / polymer composite dielectric material.

[0051] Performance tests were performed on the composite material obtained in the embodiment: the elongation at bre...

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Abstract

The invention belongs to the technical field of composite materials, and in particular relates to a liquid metal / polymer composite dielectric material and a preparation method thereof. The polymerized monomer solution, the liquid metal and the cross-linking agent are uniformly blended to obtain a precursor solution; the precursor solution is left to stand to obtain a polymer dielectric material. The preparation method of the invention is simple and convenient, and the prepared composite material has excellent dielectric properties, and meanwhile, the tensile property is better than that of traditional dielectric materials, and has wide application prospects in the fields of wearable electronic devices, soft robots and the like.

Description

technical field [0001] The invention belongs to the technical field of composite materials, and in particular relates to a liquid metal / polymer composite dielectric material and a preparation method thereof. Background technique [0002] Dielectric materials play an important strategic role in modern electronics and power systems. It has broad application prospects in future power generation, bionics, biomedicine, optics, microsystems, aerospace, etc. Traditional inorganic ceramic materials have high dielectric constant and high thermoelectric stability, but their high processing temperature and high brittleness make it difficult to meet the requirements of the modern electronics industry. [0003] The rapid development of wearable electronic products and soft robots puts forward higher requirements for dielectric materials, which must not only have excellent dielectric properties, but also have good mechanical properties and processing properties. However, using polymer a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F120/06C08F2/44C08K3/08C08F220/56C08F222/38C08F220/06C08F220/44C08F220/14C08F228/02
CPCC08F120/06C08F2/44C08F220/56C08F220/44C08F220/14C08K3/08C08F222/385C08F220/06C08F228/02
Inventor 李朝旭徐洁尤俊
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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