Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Low-frequency high-damping rubber-based piezoelectric composite material and preparation method thereof

A piezoelectric composite material and rubber-based technology, applied in the field of damping materials, can solve the problems of high volume fraction of piezoelectric ceramic powder, high material hardness, limited application range, etc., and achieve the effect of improving the damping factor

Active Publication Date: 2012-07-18
725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
View PDF4 Cites 14 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the volume fraction of piezoelectric ceramic powder contained in this material is too high, and the material hardness is too high, which limits its application range.
[0004] Few of the reported piezoelectric composite materials involve their damping properties and their applications in the field of vibration and noise reduction.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Low-frequency high-damping rubber-based piezoelectric composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] Using non-diene rubber as matrix material, PZT piezoelectric ceramic powder, conductive carbon black and coupling agent were added to prepare rubber-based piezoelectric damping composite material. Weigh the mixed powder of rubber base material, piezoelectric ceramic powder, conductive carbon black and titanate coupling agent according to the formula ratio in Table 1, knead on the internal mixer, and after mixing evenly, take out the sheet, cut it, and put it into the Mold, formed on a thermoforming machine. The molding temperature (upper and lower molds) is 160°C, the molding pressure is 5MPa, and the molding time is 50min. The molded piezoelectric damping composite material was polarized in a high-voltage DC oil bath polarization device with a polarization voltage of 4000V, a polarization temperature of 80°C, and a polarization time of 15 minutes.

[0025]

[0026] Table 1 Example 1-4 formula (mass parts)

[0027] Raw material name Example 1 Example 2 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
piezoelectric charge coefficientaaaaaaaaaa
Login to View More

Abstract

The invention discloses a low-frequency high-damping rubber-based piezoelectric composite material and a preparation method thereof. The composite material is a complex formed by mixing a rubber base material consisting of 100 parts of non-diene rubber, 1.0 to 1.5 parts of vulcanizing agent and 4.0 to 5.0 parts of vulcanizing accelerator, 100 to 500 parts of piezoelectric ceramic powder, 0.1 to 0.5 part of conductive carbon black and 0.5 to 5.0 parts of coupling agent, vulcanizing, polarizing and the like. A novel damping material which has a high damping factor (tan delta is more than or equal to 0.3) at low frequency (1 to 300Hz) can be obtained, an obvious piezoelectric synergistic effect is achieved, and the damping factor (tan delta is more than or equal to 0.2) of the polarized material is obviously improved compared with that of the unpolarized material.

Description

technical field [0001] The invention relates to a technology in the field of damping materials, in particular to a low-frequency high-damping rubber-based piezoelectric composite material and a preparation method thereof. Background technique [0002] Damping material is a new type of functional material that can absorb vibration mechanical energy and convert it into heat energy and dissipate it. It uses the principle of damping material to convert kinetic energy into heat energy during deformation to reduce the resonance amplitude of the structure, increase the fatigue life and reduce the structure. noise. Various types of damping materials have been successfully applied in many fields, among which rubber-based vibration-damping materials are gaining more and more attention due to their excellent performance. However, due to the inherent properties of the viscoelastic damping material itself, its damping performance is significantly affected by the ambient temperature and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08L23/22C08L23/16C08K13/06C08K9/06C08K9/04C08K3/24C08K3/04C08K3/06B29C43/00B29C71/00B29B7/00
Inventor 王雯霏梁磊韦璇
Owner 725TH RES INST OF CHINA SHIPBUILDING INDAL CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com