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High-dielectric elastomer composite material with low content of carbon nanometer tubes and preparation method of composite material

A carbon nanotube and composite material technology, which is applied in the field of high dielectric elastomer composite material and its preparation, can solve the problems of complete structure destruction of carbon tube, weakening of interface polarization effect, affecting the dielectric properties of carbon tube, etc.

Active Publication Date: 2013-07-24
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These methods can make carbon nanotubes well dispersed in polymers, but they also cause certain damage to the complete structure of carbon nanotubes, either affecting the dielectric properties of carbon nanotubes or weakening the interface polarization effect, so a higher Only the amount of carbon tubes added can obtain a high dielectric constant, and the process is complicated and difficult to control

Method used

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  • High-dielectric elastomer composite material with low content of carbon nanometer tubes and preparation method of composite material
  • High-dielectric elastomer composite material with low content of carbon nanometer tubes and preparation method of composite material
  • High-dielectric elastomer composite material with low content of carbon nanometer tubes and preparation method of composite material

Examples

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Effect test

Embodiment 1

[0031] Example 1: Hydrogenated nitrile / carbon nanotube dielectric elastomer material was prepared by using hydrogenated nitrile rubber as a matrix and arrayed carbon tubes as a dielectric filler. (1) Masticating 100 parts by mass of hydrogenated nitrile rubber at room temperature on an open mill, then gradually adding 0.5 parts by mass of carbon nanotubes, kneading with a knife, and making triangle bags to make it evenly mixed; (2) adding 1 mass part Parts of dicumyl peroxide (DCP), mixed evenly, sheet; (3) after the mixing rubber stopped for 8h, test the vulcanization curve with the LH-2 type disc vulcanizer produced by Beijing Huanfeng Chemical Machinery Experimental Factory, Determine that the vulcanization temperature is 170°C, and the vulcanization time is 9.5min; (4) vulcanize at 170°C×10min on a 25-ton electric heating plate vulcanizer manufactured by Shanghai Rubber Machinery Manufacturing Co., Ltd. to obtain a cross-linked hydrogenated nitrile rubber / carbon nanotube co...

Embodiment 2

[0032] Example 2: The preparation method and test method are the same as in Example 1, except that the number of carbon nanotubes is 2 parts by mass, and the vulcanization temperature and time are 170° C. and 9.5 min, respectively. The test results are shown in Table 1.

Embodiment 3

[0033] Example 3: The preparation method and testing method are the same as in Example 1, except that the number of carbon nanotubes is 5 parts by mass, and the vulcanization temperature and time are 170° C. and 8.5 min, respectively. The test results are shown in Table 1.

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Abstract

The invention discloses a high-dielectric elastomer composite material with low content of carbon nanometer tubes and a preparation method of the composite material and belongs to an elastomer composite material. The high-dielectric elastomer composite material contains the following components in parts by weight: 100 parts of elastomers, 0.5-10 parts of array carbon tubes, 0 or 0.5-12 parts of a vulcanizing agent, and 0 or 1-7 parts of a vulcanizing-assisting agent, wherein when the elastomers are rubber matrixes, the vulcanizing agent and the vulcanizing-assisting agent are needed; and when the elastomers are thermoplastic elastomer matrixes, the vulcanizing agent and the vulcanizing-assisting agent are not needed. The composite material is prepared by a mechanical blending method. The composite material with good dispersing performance is obtained by means of adding the array carbon tubes with a one-dimensional orientation arrangement structure, the dielectric constant of the elastomer can be enhanced greatly under the condition of a low stuffing content, simultaneously the modulus of the elastomer is not increased remarkably and a high ratio value of dielectric constant / modulus is obtained.

Description

technical field [0001] The invention relates to a high dielectric elastomer composite material with low content of carbon nanotubes and a preparation method thereof. In particular, the dielectric elastomer composite material with low modulus and high dielectric performance obtained by filling elastomer with one-dimensional alignment array carbon tubes and its preparation method. Background technique [0002] The so-called dielectric elastomer (Dielectric Elastomer, DE) refers to an elastomer with a high dielectric constant, which can change its shape or volume under the action of external electrical stimulation, and can return to its original shape or volume when the external electrical stimulation is withdrawn. Volume, thereby generating stress and strain, converting electrical energy into mechanical energy, that is, electro-induced deformation. An important application of dielectric elastomers is to make micro-actuators, which are used in micro-robots, disk drives, prosth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L15/00C08L83/04C08L23/16C08L9/02C08L7/00C08L9/06C08L75/04C08L53/02C08L67/00C08L77/00C08K7/00C08K3/04C08K5/14C08K3/06
Inventor 田明刘苏亭宁南英张立群卢咏来
Owner BEIJING UNIV OF CHEM TECH
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