Unlock instant, AI-driven research and patent intelligence for your innovation.

Piezoelectric ceramic and nano-crystalline PVC composite material and preparation thereof

A technology of polyvinyl chloride and piezoelectric ceramics, applied in the field of composite materials and preparation of piezoelectric ceramics and nanocrystalline polyvinyl chloride, which can solve the problems of high brittleness of epoxy resin, unsatisfactory electrical properties of composite materials, and high electric field

Inactive Publication Date: 2006-03-15
WUHAN UNIV OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the use of P(VDF-TrFE) has made great progress, but the relatively expensive price of P(VDF-TrFE) limits its application
[0006] Epoxy resin has excellent bonding properties. It can bond ferroelectric and ferromagnetic materials together when the volume fraction is very low. and other defects, and the cured epoxy resin is very brittle, and at the same time, due to the high electric field required for the polarization of the epoxy resin, the electrical properties of the composite material are not ideal, which limits the application

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
  • Piezoelectric ceramic and nano-crystalline PVC composite material and preparation thereof
  • Piezoelectric ceramic and nano-crystalline PVC composite material and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment 1 Preparation of nanocrystalline PVC

[0015] Dissolve isotactic PVC with cyclohexanone solvent, use the solution to spray dry ordinary PVC powder, heat treat at 100-120°C for 4 hours, and obtain crystalline PVC powder. The crystalline PVC micropowder is modified by jet mill pulverization to prepare nanocrystalline PVC with a thickness of about 5-20 μm.

Embodiment 2

[0016] Example 2 Preparation of Lead Zirconate Titanate (PZT) and Nanocrystalline PVC Composite Material

[0017] According to the volume ratio, 30% nanocrystalline PVC and 70% PZT powder are fully mixed in a mixer, molded on a 350mm×350mm flat vulcanizer at a temperature of 130°C and a pressure of 10MPa for 30min, and then cooled under pressure to prepare PZT and nanocrystalline PVC composite materials.

Embodiment 3

[0018] Example 3 Preparation of Lead Titanate (PT) and Nanocrystalline PVC Composite Material

[0019] According to the volume ratio, 10% nanocrystalline PVC and 90% PT powder are fully mixed in a mixer, molded on a 350mm×350mm flat vulcanizer at a temperature of 150°C and a pressure of 20MPa for 20min, and then cooled under pressure to prepare PT and nanocrystalline PVC composite material.

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
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a piezoelectric ceramic and nano-crystalline PVC composite material and preparation thereof, wherein the material comprises 10-50% by volume of nano-crystalline PVC and 90-50% of piezo-electric ceramic, the piezo-electric ceramics can be titanium lead zirconate, or lead titanate, titanium lead zirconate plus Pb(Mg#-[1 / 3]Nb#-[2 / 3])O#-[3], titanium lead zirconate plus Pb(Mn#-[1 / 3]Sb#-[2 / 3])O#-[3], and K#-[1-x]Na#-[x]NbO#-[3]. Its preparation comprises, mixing, die pressing, and pressure maintaining cooling down.

Description

Technical field: [0001] The invention relates to piezoelectric ceramics and nanocrystalline polyvinyl chloride composite material and its preparation. 2. Background technology: [0002] Piezoelectric composites can be prepared by combining piezoelectric ceramics with polymers. At present, the commonly used polymer phases mainly include polyvinylidene fluoride (PVDF), vinylidene fluoride-trifluoroethylene copolymer P (VDF-TrFE), vinylidene fluoride-tetrafluoroethylene copolymer P (VDF-TeFE), nylon 11 and epoxy resin etc. It has been successfully applied to various electro-mechanical transducers and electro-acoustic transducers. Such as microphones, speakers, hydrophones, computer keyboards and non-contact switches. [0003] Among all polymer piezoelectric materials, PVDF has a special status. It not only has excellent piezoelectricity, pyroelectricity and ferroelectricity, but also has excellent mechanical properties, and has become the most studied and most widely used p...

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 Patents(China)
IPC IPC(8): C08J3/20C04B35/491C04B35/634C04B35/645
Inventor 熊传溪董丽杰权红英
Owner WUHAN UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com