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

A technology of epoxy resin and composite materials, which is applied in the field of damping composite materials, can solve problems such as complex processes, and achieve the effect of improving damping performance and improving damping performance

Inactive Publication Date: 2008-12-24
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although the sandwich structure has many structural advantages, its manufacturing process is comp

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

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Experimental program
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Effect test

Embodiment 1

[0030] After the PZT powder obtained by sieving is treated with ethanol solution of silane coupling agent, it is filtered and dried, and mixed with bisphenol A diglycidol according to 40% of the total mass of all components of the epoxy resin-based piezoelectric damping composite material. Ether-type epoxy resin (such as CYD-127) is mixed, and then the conductive carbon black surface-treated by the ethanol solution of the silane coupling agent is added according to 0.5% of the mass of CYD-127. Stir mechanically at room temperature for 10 minutes, then place the mixture in an ultrasonic oscillator, vibrate at 90°C and 60Hz for 3 hours, then add polyetheramine T403, stir evenly, and pour it into the mold to 2 / 3 full , wait for it to gel, and then perform a second pour to fill the mold. Curing at room temperature for 3 hours, post-curing at 120°C for 3 hours, cooling in the furnace, demolding and grinding to obtain an epoxy resin-based piezo-resistance damping composite material....

Embodiment 2

[0032] After the PZT powder obtained by sieving is treated with ethanol solution of silane coupling agent, it is filtered and dried, and mixed with bisphenol A diglycidol according to 40% of the total mass of all components of the epoxy resin-based piezoelectric damping composite material. Ether-type epoxy resin (such as CYD-127) is mixed, and then the conductive carbon black surface-treated by the ethanol solution of the silane coupling agent is added according to 0.5% of the mass of CYD-127. Stir mechanically at room temperature for 10 minutes, then place the mixture in an ultrasonic oscillator, vibrate at 90°C and 60Hz for 4 hours, then add polyetheramine T403, stir evenly, and pour it into the mold to 2 / 3 full , wait for it to gel, and then perform a second pour to fill the mold. Curing at room temperature for 4 hours, post-curing at 120°C for 2 hours, cooling in the furnace, demolding and grinding to obtain an epoxy resin-based piezoelectric damping composite material. P...

Embodiment 3

[0034] The PZT powder obtained by sieving is treated with ethanol solution of silane coupling agent and then filtered and dried, mixed with bisphenol A diglycidol according to 75% of the total mass of all components of the epoxy resin-based piezoelectric damping composite material Ether-type epoxy resin (such as CYD-127) is mixed, and then the conductive carbon black surface-treated by the ethanol solution of the silane coupling agent is added according to 0.5% of the mass of CYD-127. Stir mechanically at room temperature for 15 minutes, then place the mixture in an ultrasonic oscillator, vibrate at 90°C and 80Hz for 4 hours, then add polyetheramine T403, stir evenly, and pour it into the mold to 1 / 2 full , wait for it to gel, and then perform a second pour to fill the mold. Curing at room temperature for 4 hours, post-curing at 120°C for 3 hours, cooling in the furnace, demolding and grinding to obtain an epoxy resin-based piezoelectric damping composite material. Put the sa...

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Abstract

The invention discloses an epoxide resin based piezoelectricity damping composite material and a preparation method thereof. The composite material consists of piezoelectric ceramics, graphitized carbon black and epoxide resins, wherein the components are integrated into one whole body by the secondary casting; the introduced piezoelectric ceramics is centralized on the upper part and the lower part of the composite material respectively, naturally settled in the process of forming and finally forms a sandwich structure with graded distribution. The invention utilizes the secondary casting forming process to prepare the epoxide resin based piezoelectricity damping composite material with the gradient sandwich structure, on the basis of realizing the piezoelectricity damping by the three-phase cooperation effect, the composite material also has the advantages of the sandwich structure, thereby greatly improving the damping performance of the composite material; through the dynamic mechanical analysis of a sample, the max. damping factor (tan delta max) is increased by more than 20 percent, the damping temperature zone delta T (the temperature zone where tan delta is more than 0.3)) is increased by more than 33 percent, and the area TA included under the tan delta-T curve is increased by more than 19 percent.

Description

technical field [0001] The invention relates to the field of damping composite materials, in particular to a gradient interlayer epoxy resin-based piezoelectric damping composite material and a preparation method thereof. Background technique [0002] Damping material is a functional material that can absorb vibration mechanical energy and convert it into heat energy, electric energy, magnetic energy or other forms of energy and lose it. According to different substrates, damping materials can be divided into four types: polymer damping materials, ceramic high-temperature-resistant damping materials, high-damping alloy materials, and intelligent damping materials. Among them, polymer damping materials have the best vibration reduction effect and are the most widely used. , and the epoxy resin in the polymer has been applied in many fields because of its excellent mechanical properties, heat resistance, good processability and other advantages. [0003] The research on apply...

Claims

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Application Information

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IPC IPC(8): C08L63/02C08K3/00C08K3/04C08K9/06C08K5/17C08J5/00B29B7/00B29C70/28
Inventor 黄志雄魏涛石敏先秦岩梅启林王雁冰付承菊张联盟
Owner WUHAN UNIV OF TECH
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