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Irradiation-modified polyurethane piezoelectric damping material with conductive channel prepared from graphene and preparation method for same

A polyurethane piezoelectric and conductive channel technology, applied in the coating and other directions, can solve the problems of large amount of addition, limited conductive effect of conductive graphite and polyaniline, limiting the efficiency of converting electrical energy into thermal energy in conductive channels, etc., and achieves simplified production process, The effect of reducing the post-curing time and increasing the dielectric constant

Active Publication Date: 2013-04-24
BEIJING RADIATION APPL RES CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The current research is mainly to add conductive components such as conductive graphite and polyaniline to the matrix of the damping material. Due to the limited conductive effect of conductive graphite and polyaniline, the amount of addition is large, which greatly limits the conductive channel. Efficiency of conversion to heat energy

Method used

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  • Irradiation-modified polyurethane piezoelectric damping material with conductive channel prepared from graphene and preparation method for same
  • Irradiation-modified polyurethane piezoelectric damping material with conductive channel prepared from graphene and preparation method for same
  • Irradiation-modified polyurethane piezoelectric damping material with conductive channel prepared from graphene and preparation method for same

Examples

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Embodiment 1

[0031] Example 1. Preparation of radiation-modified polyurethane piezoelectric damping material using graphene as a conductive channel

[0032] The process flow chart prepared by the present invention is as figure 1 shown.

[0033] Weigh 100g of polyether ester polyol JES-101 (Shanxi Kaixirui Technology Co., Ltd.) into a beaker, and add 1.0g of stannous octoate and graphene SGE-070 (Beijing Naxintiandi Technology Development Co., Ltd.) to the beaker in turn 0.125g, piezoelectric ceramic powder (PZT-4) 40g, hydrogenated MDI (HMDI) 50g, diethoxybutynediol 4g and 1,4-butanediol 5g, vacuum defoaming and stirring evenly, pour into the mold, Cast into a sheet, and wait for the sheet to solidify for later use;

[0034] (2) Place the sheet prepared in step (1) in a vacuum oven at 80°C for heat aging for 6 hours;

[0035] (3) Place the heat-cured sheet in step (2) in a vacuum flat vulcanizing machine, and mold it at 80°C to form a flat sheet;

[0036] (4) Carry out irradiation trea...

Embodiment 2

[0045] Example 2, preparation of radiation-modified polyurethane piezoelectric damping material using graphene as a conductive channel

[0046] The process flow chart prepared by the present invention is as figure 1 shown.

[0047] (1) Weigh 1 kg of polyether ester polyol JES-102 (Shanxi Kaixirui Technology Co., Ltd.) Company) 2.5g, piezoelectric ceramic powder (PZT-4) 200g, hydrogenated MDI (HMDI) 600g, diethoxybutynediol 50g and 1,4-butanediol 90g, vacuum defoaming and stirring evenly, pour into The mould, which is cast into a sheet, is ready for use after the sheet is solidified;

[0048] (2) heat-cure the sheet prepared in step (1) in a vacuum oven at 100°C for 4 hours;

[0049] (3) Place the heat-cured sheet in step (2) in a vacuum flat vulcanizing machine, and mold it at 100°C to form a flat sheet;

[0050] (4) Carry out irradiation treatment on the plate after finishing in step (3), and the irradiation dose is 50kGy;

[0051] (5) Cover the surface of the plate afte...

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Abstract

The invention discloses an irradiation-modified polyurethane piezoelectric damping material with a conductive channel prepared from graphene and a preparation method for the same. The method comprises the following steps of: (1) mixing polyether ester polyol, 4,4'-dicyclohexyl methylene diphenyl diisocyanate, a catalyst, graphene, piezoelectric ceramic powder, dioxethyl butynediol and 1,4-butanediol to obtain a mixed material, performing vacuum defoaming on the mixed material, then pouring the mixed material in a mould, and sheeting via tape-casting to obtain sheets; (2) thermally curing the sheets, and then performing vacuum mould pressing to obtain a plate; and (3) irradiating the plate, and then performing electric polarization treatment to obtain the product. According to the method disclosed by the invention, via the introduction of the graphene conductive channel, the dielectric constant of the material is greatly increased, and the damping performance of the material is greatly improved. According to the method disclosed by the invention, crosslinking treatment is performed on the material via irradiation, so that the mechanical performance of the material is improved under the action of irradiation; and simultaneously, the post-curing time of the material is reduced, the production process is simplified, and the damping performance of the material is good.

Description

technical field [0001] The invention relates to a radiation-modified polyurethane piezoelectric damping material with graphene as a conductive channel and a preparation method thereof, belonging to the technical field of polymer materials. Background technique [0002] All kinds of mechanical equipment will generate different degrees of vibration and noise during operation and work. Damping vibration reduction and noise reduction technology is one of the methods to effectively control vibration and noise. Damping material is a new type of functional material that can absorb vibration mechanical energy and convert it into heat energy and lose it. Polymer materials are widely used as damping materials due to their special structure. It uses the viscoelasticity of polymer materials to convert mechanical vibration energy into thermal energy and dissipate it, so as to achieve the purpose of vibration reduction and noise reduction. Therefore, polymer damping materials have been w...

Claims

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Application Information

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IPC IPC(8): C08G18/67C08G18/66C08G18/48C08G18/42C08K3/04C08K3/24C08L75/06B29C71/04B29C51/10B29C41/08B29C35/02
Inventor 曹巍王连才周成飞翟彤酒永斌翟宇曾心苗
Owner BEIJING RADIATION APPL RES CENT
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