Brominated butyl rubber dielectric elastomer composite material and preparation method thereof

A technology of bromobutyl rubber and dielectric elastomer, which is applied in the field of bromobutyl rubber dielectric elastomer composite material and its preparation, can solve the problem of easy formation of conductive paths, lower percolation threshold and low electrical breakdown strength and other problems, to achieve the effects of excellent ductility, improved compatibility, and low air permeability

Active Publication Date: 2016-05-25
BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The obtained composite material obtains a high dielectric constant while maintaining good mechanical properties. However, due to the agglomeration of flake graphene oxide in the elastomer matrix, the percolation threshold is further reduced, and it is easy to form a conductive path. The electrical breakdown strength is low, which limits its practical application

Method used

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  • Brominated butyl rubber dielectric elastomer composite material and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: taking brominated butyl rubber as the matrix, adopting nano-barium titanate as the high dielectric ceramic filler, the specific operation steps are: (1) plasticizing 100 parts by mass of brominated butyl rubber at room temperature on an open mill , gradually add 10 parts by mass of nano-barium titanate with a particle size of 30nm, then gradually add 1 part by mass of calcium stearate and 5 parts by mass of zinc oxide cutter knives for mixing, make triangular bags, make it evenly mixed, and then gradually pour Add 10 parts by mass of tributyl phosphate (TBP), knead evenly, and release the tablet. (2) After the mixed rubber is parked for 7-16 hours, set the pressure on a flat vulcanizer at 15 MPa and vulcanize at 170° C. for 40 min to prepare a brominated butyl rubber dielectric elastomer composite. The test results are shown in Table 1.

Embodiment 2

[0032] Example 2: The preparation method is the same as in Example 1, except that the number of parts of barium titanate is 30 parts by mass. The test results are shown in Table 1.

Embodiment 3

[0033] Embodiment 3: The preparation method is the same as that of Embodiment 1, except that the number of parts of barium titanate is 50 parts by mass. The test results are shown in Table 1.

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Abstract

The invention relates to a brominated butyl rubber dielectric elastomer composite material and a preparation method thereof. The preparation method comprises the steps that 100 parts of brominated butyl rubber, 1.5-9 parts of a vulcanization system, 10-50 parts of high-dielectric ceramic packing and 10-50 parts of a polarity plasticizer are blended by mass, even mixing is performed at the temperature of 20 DEG C-60 DEG C, slice discharging is performed, mixed rubber stands for 7-16 h at room temperature and then is vulcanized on a plate vulcanizer, and the brominated butyl rubber dielectric elastomer composite material is prepared. According to the brominated butyl rubber dielectric elastomer composite material and the preparation method thereof, the brominated butyl rubber is taken as a matrix, the dielectric ceramic packing with the high dielectric constant and the small-molecule polarity plasticizer are added into the matrix, and the prepared dielectric elastomer composite material has the advantages of being high in dielectric constant, low in elasticity modulus and excellent in ductility; meanwhile, high electrodeformation can be obtained in a lower external electric field, and the condition that in a traditional method, a dielectric elastomer only can generate high electrodeformation under the high voltage is improved.

Description

technical field [0001] The invention belongs to the technical field of dielectric elastomer composite materials, and in particular relates to a brominated butyl rubber dielectric elastomer composite material and a preparation method thereof. Background technique [0002] Dielectric elastomers have the advantages of good flexibility, large driving deformation, strong driving force, high energy density, fast response time, small dielectric loss and viscoelastic hysteresis loss, and low processing cost. They can be used in micro-robots, sensors, and drives. And high-tech fields with great application value such as artificial muscles. With the development of information, electronics and power industries towards miniaturization, dielectric elastomer materials with high dielectric constant and low dielectric loss have become a hot spot in the industry. [0003] In recent years, the research direction of dielectric elastomers is mainly to dope dielectric elastomers with high diele...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/28C08K13/02C08K3/24C08K5/098C08K3/22C08K5/521B29C35/02
CPCB29C35/02C08K3/22C08K3/24C08K5/098C08K5/521C08K13/02C08K2003/2227C08K2003/2241C08K2003/2296C08K2201/003C08K2201/011C08K2201/014C08L2201/08C08L23/283
Inventor 郭文莉阮梦楠杨丹黄朔李树新伍一波商育伟罗吉
Owner BEIJING INSTITUTE OF PETROCHEMICAL TECHNOLOGY
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