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Epoxide resin based piezoelectric composite damping material and method for preparing the same

A technology of composite damping material and epoxy resin is applied in the field of epoxy resin-based piezoelectric composite damping material and its preparation, and achieves the effects of good economic and social benefits, good damping performance, and simple and feasible process

Active Publication Date: 2008-12-17
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The above related patent technologies mentioned damping materials prepared with epoxy resin or other polymers as the matrix and vibration damping and damping materials prepared with piezoelectric ceramics as the matrix, but for those prepared with epoxy resin as the matrix and piezoelectric ceramics as functional fillers The piezoelectric composite damping material does not involve

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0030] Taking epoxy resin 6002 and curing agent 5506 as the matrix, adding PZT piezoelectric ceramic powder and conductive carbon black to prepare epoxy resin-based piezoelectric composite damping material. Weigh epoxy resin 6002, PZT piezoelectric ceramic powder and conductive carbon black according to the formula ratio and mix them together. After ultrasonic dispersion, add curing agent 5506, stir and mix evenly, pour the mixture into the mold, and cure at room temperature for 24 hours forming. The formed piezoelectric composite material was polarized in a high-voltage DC oil bath electric field with a polarization field strength of 4kv / mm, a polarization temperature of 80°C, and a polarization time of 45min. The formulations of Examples 1-4 are shown in Table 1, and the damping performance of the piezoelectric composite damping material is shown in Table 2.

[0031] Table 1 Embodiment 1~4 formula (parts by mass)

[0032] Component

Example 1

Example 2

...

Embodiment 5～8

[0036] The epoxy resin-based piezoelectric composite was prepared by adding piezoelectric ceramic powder and conductive carbon black with low-viscosity flexible epoxy resin D.E.R.732 and aliphatic amine curing agent 5784 as the matrix. Weigh the components of epoxy resin D.E.R.732, PMN-PT piezoelectric ceramic powder and conductive carbon black according to the formula ratio and mix them together. After ultrasonic dispersion, add curing agent 5784, stir and mix evenly, and pour the mixture into the mold. Curing at room temperature for 24 hours. The formed piezoelectric composite material was polarized in a high-voltage DC oil bath electric field with a polarization field strength of 4kv / mm, a polarization temperature of 80°C, and a polarization time of 45min. The formulations of Examples 5-8 are shown in Table 3, and the damping performance of the piezoelectric composite damping material obtained in Example 6 is shown in Table 4.

[0037] Table 3 Example 5~8 formula (parts by...

Embodiment 9～12

[0042] Epoxy resin-based piezoelectric composites were prepared by adding piezoelectric ceramic powder and conductive carbon black with high viscosity epoxy resin E-51 and phenolic modified amine curing agent T-31. Weigh the components of epoxy resin E-51, modified PZT piezoelectric ceramic powder and conductive carbon black according to the formula ratio and mix them together, add curing agent T-31 after mechanical stirring and dispersing, and mechanical stirring again to mix evenly. The material is poured into the mold, cured at room temperature for 24 hours, and then heat-treated (80°C×2h+100°C×2h) to make it completely cured. The formed piezoelectric composites are polarized in a high-voltage DC oil bath electric field. The formulations of Examples 9-12 are shown in Table 5.

[0043] Table 5 Embodiment 9~12 formula (mass parts)

[0044] Component

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PUM

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Abstract

The invention introduces an epoxy resin-based piezoelectric and composite damping material and a preparation method thereof, which comprises the following materials by weight portion: 100 portions of epoxy resin, 30 portions to 220 portions of piezoelectric ceramic powder, 0.5 portion to 5 portions of graphitized carbon black and 30 portions to 120 portions of curing agent. After being mixed, dispersed and added with the curing agent to be evenly blended and then poured, cured and shaped, the piezoelectric and composite material can be polarized in an HVDC oil-bath electric field and has good damping property (tan Delta is not less than 0.3) in a wide-temperature range (10 to 100 DEG C) and can also be applied in projects as free damping material as well as in an intelligent vibration and noise reduction system. In addition, the piezoelectric and composite material can be made into damping paint, putty, slurry and potting adhesive and poured into various section materials to be used in vibration and noise reduction projects in the fields such as vehicles, industrial machinery, civil construction, household appliances, precision instruments, military equipment, etc.

Description

technical field [0001] The invention relates to a piezoelectric ceramic / polymer composite material and a preparation method thereof, in particular to an epoxy resin-based piezoelectric composite damping material and a preparation method thereof. Background technique [0002] With the development of society, machinery equipment tends to be high-speed and automatic, and the problems of vibration, noise and fatigue fracture caused by it are becoming more and more prominent. Vibration and noise limit the performance of mechanical equipment and seriously damage the stability of mechanical equipment operation. and reliability, pollute the environment, and endanger people's physical and mental health. Therefore, reducing vibration and noise and improving the environment are problems that need to be solved urgently. As an important class of vibration reduction products, damping materials are widely used in vibration and noise reduction projects in the fields of transportation, indus...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L63/00C08K13/02C08K3/24C08K3/04B29B7/00B29C39/00B29C71/00
Inventor 朱晓君韦璇林新志梁磊
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
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