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A kind of silicone rubber-carbon sponge composite material and its preparation method and application

A composite material and carbon sponge technology, which is applied in the field of silicone rubber-carbon sponge composite material and its preparation, can solve problems such as fiber breakage, electrical signal conduction network damage, and electrical signal stability decline, and achieve cheap and easy-to-obtain preparation materials , broad application prospects, and the effect of improving durability

Inactive Publication Date: 2019-03-15
SHANDONG UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

More importantly, although carbon is inherently conductive, the conductivity of the all-carbon sponge is relatively insufficient, resulting in poor sensitivity of the sensor made with it.
Therefore, in frequent actions, the sensitivity of the pressure sensor made of all-carbon sponge material is difficult to meet the demand
[0005] At the same time, long-term frequent actions act on the all-carbon sponge sensor, and the aging phenomenon of the sensor will occur, that is, the fibers in the all-carbon sponge will break, which will damage the conduction network of the electrical signal and reduce the stability of the electrical signal, seriously affecting the sensor. service life

Method used

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  • A kind of silicone rubber-carbon sponge composite material and its preparation method and application
  • A kind of silicone rubber-carbon sponge composite material and its preparation method and application
  • A kind of silicone rubber-carbon sponge composite material and its preparation method and application

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preparation example Construction

[0046] In yet another embodiment of the present invention, a method for preparing a silicone rubber-carbon sponge composite material is provided, comprising the steps of:

[0047] (1) The sponge is cleaned with ultrasonic waves, and the treated sponge is dried and decomposed by high-temperature carbonization to obtain a carbon sponge;

[0048] (2) placing the carbon sponge obtained in step (1) into a carbon nanotube solution for immersion treatment, taking out and drying to obtain a carbon nanotube-carbon sponge composite material;

[0049] (3) Mix and stir the insulator polymer and the curing agent to remove the foam, fill it into the carbon sponge, and cure it at high temperature, so that the insulator polymer is solidified on the carbon nanotube-carbon sponge composite material.

[0050] Wherein, in the step (1), the sponge is a polyester sponge or a polyether sponge, preferably, the sponge is a melamine-formaldehyde resin foam;

[0051] The specific steps of cleaning are ...

Embodiment 1

[0066] A preparation method of silicone rubber-carbon sponge composite material, comprising the steps of:

[0067] (1) The melamine-formaldehyde resin foam material is ultrasonically cleaned with acetone, ethanol and distilled water in sequence, and then dried in the air at 60°C before use; the dried sponge is carbonized and decomposed at a high temperature of 1000°C for 2 hours to obtain a carbon sponge ;

[0068] (2) Multi-walled carbon nanotubes and sodium dodecylbenzenesulfonate are added to the deionized aqueous solution by 2:1 mass ratio to prepare the multi-walled carbon nanotubes solution of 0.5g / L, and step (1) is processed The obtained carbon sponge is soaked in the multi-walled carbon nanotube solution for 10 minutes, taken out and dried at 60°C to obtain the carbon nanotube-carbon sponge composite material;

[0069] (3) Mix the polydimethylsiloxane and the curing agent in a mass ratio of 10:1 with a defoaming mixer for 10 minutes, remove the foam for 5 minutes, fi...

Embodiment 2

[0071] A preparation method of silicone rubber-carbon sponge composite material, comprising the steps of:

[0072] (1) The melamine-formaldehyde resin foam material is ultrasonically cleaned with acetone, ethanol and distilled water in sequence, and then dried in the air at 60°C before use; the dried sponge is carbonized and decomposed at a high temperature of 900°C for 2 hours to obtain carbon sponge;

[0073] (2) Multi-walled carbon nanotubes and sodium dodecylbenzenesulfonate are added to the deionized aqueous solution by 2:1 mass ratio to prepare the multi-walled carbon nanotubes solution of 0.5g / L, and step (1) is processed The obtained carbon sponge is soaked in the multi-walled carbon nanotube solution for 10 minutes, taken out and dried at 60°C to obtain the carbon nanotube-carbon sponge composite material;

[0074] (3) Mix the polydimethylsiloxane and the curing agent in a mass ratio of 10:1 with a defoaming mixer for 10 minutes, remove the foam for 5 minutes, fill i...

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Abstract

The invention discloses a silicon rubber-carbon sponge composite material and a preparation method and application thereof. The silicon rubber-carbon sponge composite material obtained through preparation has the advantages that through the material improvement, by combining the characteristics of a TENG sensor, the self electricity supply characteristics are realized; the defect that the sensor prepared in an ordinary mode can normally work only through external addition of a power supply is overcome; meanwhile, the silicon rubber-carbon sponge composite material is based on the carbon sponge composite carbon nanometer tubes; on the basis of a carbon sponge fiber network, CNT networks are additionally added, so that the integral fiber network of the material has higher mechanical intensity. The durability of the sensor manufactured in such a way is improved by more than 22 times; the sensitivity is improved by nearly 20 times; meanwhile, the more stable electric signals can be more easily obtained. The preparation method provided by the invention is simple; the preparation materials are cheap and can be easily obtained; the prepared silicon rubber-carbon sponge composite material has wide application prospects in the fields of sensors and wearable electronic equipment.

Description

technical field [0001] The invention belongs to the technical field of synthesis and application of carbon composite materials, and in particular relates to a silicone rubber-carbon sponge composite material and its preparation method and application. Background technique [0002] Wearable electronics are now receiving great attention from both academia and industry due to their potential for human-machine integration and the interesting functions they provide that can fundamentally reshape our way of life. Therefore, in recent years, various wearable electronic products have emerged, including electronic skin and wearable sensors, wearable energy storage and power generation devices, soft robots and flexible LEDs. The function of sensors is closely related to human activities, and wearable sensors with the ability to detect chemistry, heat, strain, and electricity have been well known. By detecting specific signals in human activities, such as strain of limb movement, heat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L27/18C08L83/04C08K7/24C08K3/04
CPCC08K3/04C08K7/24C08L2203/20C08L27/18C08L83/04
Inventor 李光明孙悟颉彭捷
Owner SHANDONG UNIV
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