Silicone rubber composite material with high mechanical-electrical conversion efficiency and preparation method thereof

A technology of composite materials and silicone rubber, which is applied in the field of silicone rubber composite materials with high electromechanical conversion efficiency and its preparation, and in the field of silicone rubber composite materials, can solve the problems of limited energy density and electromechanical conversion efficiency of composite materials.

Active Publication Date: 2021-07-09
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above content proposes a preparation method of a new type of dielectric elastomer material, the improvement of the energy density and electromechanical conversion efficiency of the prepared composite material is limited.

Method used

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  • Silicone rubber composite material with high mechanical-electrical conversion efficiency and preparation method thereof
  • Silicone rubber composite material with high mechanical-electrical conversion efficiency and preparation method thereof
  • Silicone rubber composite material with high mechanical-electrical conversion efficiency and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] The specific operation steps are: (1) use the silane coupling agent KH570 (γ-methacryloxypropyl) to modify the micro- and nano-scale inorganic fillers respectively (according to "Improved electromechanical properties of brominated butyl rubber filled with modified barium titanate." ("RSC Advances" 2017,7(59):37148-37157.) prepared), some functional groups of KH570 can react with the hydroxyl groups on the surface of the inorganic filler to obtain surface-modified modified inorganic fillers. (2) at room temperature, the methyl vinyl silicone rubber of 100 mass parts is plasticized on the Haake rheometer produced by Thermo Fisher Corporation, and then 5 mass parts of modified titanium dioxide with an average particle diameter of 30nm and 25 parts by mass of modified titanium dioxide with an average particle size of 2 μm were slowly added to the methyl vinyl silicone rubber several times, kneaded for 5 minutes to uniformly disperse the titanium dioxide, and finally 1 part b...

Embodiment 2

[0042] The preparation process is the same as in Example 1, except that the modified titanium dioxide with an average particle diameter of 30 nm is 10 parts by mass, the modified titanium dioxide with an average particle diameter of 2 μm is 20 parts by mass, and then the number of parts of methyl silicone oil added is 10 parts by mass . The test results are shown in Table 1.

Embodiment 3

[0044] The preparation process is the same as in Example 2, except that 20 parts by mass of modified titanium dioxide with an average particle diameter of 30 nm, 30 parts by mass of modified titanium dioxide with an average particle diameter of 2 μm, and 30 parts by mass of methyl silicone oil. The test results are shown in Table 1.

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Abstract

The invention relates to a silicone rubber composite material with high mechanical-electrical conversion efficiency and a preparation method thereof, and belongs to application of dielectric elastomer materials in the field of generators. The composite material comprises 100 parts of a rubber matrix, 1-5 parts of a vulcanizing agent, 5-30 parts of a modified inorganic nano filler, 10-50 parts of a modified inorganic micron filler and 0-50 parts of a plasticizer. According to the preparation method, the dielectric constant of the composite material is improved, meanwhile, the lower elastic modulus is kept, and the silicone rubber nano composite material with the high dielectric constant, the low elastic modulus, the high energy density and the high mechanical-electrical conversion efficiency is obtained. The novel silicone rubber composite material provides a preparation method and thought of a novel material for the field of dielectric elastomer generators.

Description

technical field [0001] The invention relates to the field of dielectric elastomer materials, in particular to a silicone rubber composite material with high electromechanical conversion efficiency and a preparation method thereof. In particular, the invention obtains silicon rubber with high dielectric constant, low elastic modulus, high energy density and high electromechanical conversion efficiency by filling the modified nano-micro blended inorganic filler and plasticizer into the silicone rubber matrix. Rubber compound. Background technique [0002] Dielectric elastomer generator (DEG) for short is a new type of micro-generator based on the principle of variable capacitance. It is composed of compliant electrodes and a dielectric elastomer film sandwiched in the middle. The mechanical energy input during the "relaxation" cycle is converted into electrical energy to obtain energy, and compared with traditional generators, it has the advantages of light weight, good flexi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/04C08L83/08C08K9/06C08K3/22C08K3/24
CPCC08L83/04C08K9/06C08K3/22C08K3/24C08K2201/011C08K2003/2241C08K2201/014C08K2201/003C08L2201/08C08L83/08
Inventor 宁南英仲美霖田明江英杰张立群
Owner BEIJING UNIV OF CHEM TECH
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