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Organic piezoelectric damping coating and preparation method thereof

A damping coating and piezoelectric technology, applied in polyester coatings, epoxy resin coatings, polyurea/polyurethane coatings, etc., to achieve the effect of simple and easy process and good damping performance

Inactive Publication Date: 2013-07-24
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation of organic piezoelectric damping coatings with piezoelectric ceramic powders and organic coatings has not been reported.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0023] The preparation method of the above-mentioned materials provided by the present invention is as follows: weigh the components according to the formula ratio, mix and disperse them, then add additives, mechanically stir and mix evenly, and finally polarize the formed piezoelectric organic coating in the electric field of a high-voltage direct-current oil bath .

[0024] The present invention will be further described below in conjunction with examples of implementation, but the present invention is not limited.

Embodiment 1～4

[0026] Treat lead titanate powder with silane coupling agent KH550, wash with ethanol aqueous solution, dry and grind; epoxy resin varnish includes main component epoxy resin 6101 solution and curing agent component epoxy resin curing agent T31. Add the treated lead titanate powder and carbon black into the epoxy resin 6101 solution according to the formula ratio, mechanically stir for 10 minutes at room temperature, and then put the mixture in an ultrasonic mixer at a temperature of 90°C and a frequency of 80Hz. Ultrasonic vibration for 3 hours, then add dispersant BYK-180, defoamer BYK-A530, drier JUST-2100 and epoxy resin curing agent T31 according to the formula ratio, and mix evenly to obtain epoxy resin piezoelectric damping coating. Put the sample in an oil bath for polarization, the polarization temperature is 100°C, the polarization voltage is 10kV / mm, and the polarization time is 30min. See Table 1 for the formulation proportions of Implementation Cases 1 to 4, and s...

Embodiment 5～8

[0028] Treat lead titanate powder with silane coupling agent KH550, wash with ethanol aqueous solution, dry and grind; unsaturated polyester varnish includes unsaturated polyester PE-988 solution as the main agent component and styrene as the curing agent component. Add the treated lead titanate powder and carbon black into the unsaturated polyester PE-988 solution according to the proportion of the formula, and mechanically stir for 10 minutes at room temperature, and then put the mixture in an ultrasonic mixer, at a temperature of 90°C and a frequency of Ultrasonic vibration at 80Hz for 3 hours, then add dispersant BYK-180, defoamer BYK-180 and curing agent styrene according to the formula ratio, and mix evenly to obtain unsaturated polyester piezoelectric damping coating. Put the sample in an oil bath for polarization, the polarization temperature is 100°C, the polarization voltage is 10kV / mm, and the polarization time is 30min. See Table 3 for the formulation proportions o...

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PUM

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Abstract

The invention relates to an organic piezoelectric damping coating which comprises the following components in percentage by mass: 100 parts of resin base stock, 30-200 parts of piezoelectric ceramic powder, 0.5-5 parts of conductive carbon black and 0.5-50 parts of auxiliary agent. A preparation method of the organic piezoelectric damping coating comprises the following steps of: mixing and stirring the piezoelectric ceramic powder, the conductive carbon black and the resin base stock to obtain a mixture, carrying out ultrasonic dispersion on the mixture, then adding the auxiliary agent to ensure that the piezoelectric ceramic powder and the carbon black are uniformly distributed in the resin base stock to form a coating, and polarizing the prepared coating in a direct-current oil bath electric field to obtain the organic piezoelectric damping coating. The organic piezoelectric damping coating has favorable damping performance (tanDelta is more than or equal to 0.1) in a wide temperature range (-50-100DEG C) as a damping coating, can be widely applied to vibration damping and noise reduction of rooms, airplanes, ships, vehicles and various machinery and has remarkable vibration damping and noise reduction effects.

Description

technical field [0001] The invention relates to the field of piezoelectric damping materials, in particular to an organic piezoelectric damping coating and a preparation method thereof. Background technique [0002] Vibration and noise are common problems in various industries and need to be solved urgently, mainly including traffic noise, industrial noise and living noise. Various locomotives, rail vehicles, automobiles, ships, fans, construction machinery, washing machines, dishwashers, air conditioners, refrigerators, building panels, air supply pipes, environmental protection equipment, etc., the application of damping materials can effectively reduce the impact of equipment and wall structures. Vibration and radiation noise, it is an environmentally friendly vibration and noise reduction material. Developed countries have already legislated against noise hazards, and vibration and noise reduction technologies and damping materials are widely used in electromechanical p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D167/06C09D133/00C09D175/04C09D161/06C09D167/08C09D131/04C09D7/12
Inventor 黄志雄童亚军余龙颖黄坤秦岩梅启林石敏先张联盟
Owner WUHAN UNIV OF TECH
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