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A two-step hydrothermal preparation method of lead zirconate titanate coated carbon fiber

A technology of lead zirconate titanate and carbon fiber, which is applied in the direction of carbon fiber, fiber treatment, chemical instruments and methods, etc., can solve the problems of lack of related reports on the preparation of chopped carbon fiber piezoelectric coating, avoid high-temperature treatment and achieve uniform coating The effect of good performance and saving product cost

Inactive Publication Date: 2018-08-31
HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Huang Xiaozhong of National University of Defense Technology and others used sol-gel technology to prepare lead titanate and lead zirconate titanate coatings on the surface of carbon fibers for the first time (Research on the process of preparing lead titanate coated carbon fibers by Sol-Gel method, High Technology Communication, 2005, 15 volumes, pages 54-57), but this technology is based on carbon fiber precursors, and there is no relevant report on the preparation of chopped carbon fiber piezoelectric coatings

Method used

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  • A two-step hydrothermal preparation method of lead zirconate titanate coated carbon fiber
  • A two-step hydrothermal preparation method of lead zirconate titanate coated carbon fiber
  • A two-step hydrothermal preparation method of lead zirconate titanate coated carbon fiber

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Effect test

Embodiment 1

[0033] A two-step hydrothermal preparation method of lead zirconate titanate coated carbon fiber, comprising the steps of:

[0034] (1) ZrOCl 2 ·8H 2 O (0.044mol) and Ti(OC 4 h 9 ) 4 (0.056mol) was dissolved in 60ml of hydrochloric acid solution (the volume ratio of concentrated hydrochloric acid and water was 1:1, the mass fraction of concentrated hydrochloric acid was 37%), after stirring for 4 hours, after mixing evenly, the precursor sol was formed.

[0035] (2) Use concentrated nitric acid to surface-activate chopped carbon fibers with a length of 2-5 mm for 24 hours, then 0.1 g of surface-activated chopped carbon fibers are ultrasonically dispersed in the precursor sol for 30 minutes and then transferred to a 100ml autoclave. Place at 150° C. for 8 hours under a pressure of 10-15 atm to form zirconium titanate-coated carbon fibers.

[0036] (3) Preparation of Pb(NO 3 ) 2 Solution: 0.1molPb(NO 3 ) 2 Dissolved in 60ml of water, at the same time, the zirconium tita...

Embodiment 2

[0039] As described in Example 1, the difference is that the reaction temperature of the chopped carbon fibers in the autoclave in step (2) is 180° C., and the time is 8 hours.

Embodiment 3

[0041] As described in Example 1, the difference is that the reaction temperature of the chopped carbon fibers in the autoclave in step (2) is 150° C. and the time is 12 hours.

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Abstract

The invention discloses a two-step hydrothermal preparation method of lead zirconate titanate coated carbon fibers. The preparation method comprises the following steps: (1) dissolving titanium salt and zirconium salt in a hydrochloric acid solution, stirring and then forming a precursor sol; (2) ultrasonically dispersing short carbon fibers subjected to surface activation treatment in the precursor sol, then transferring to an autoclave, reacting at the temperature of 150 to 180 DEG C, and under the pressure of 10 to 15atm, thus forming zirconium titanate coated carbon fibers; (3) immersing the zirconium titanate coated carbon fibers in a lead salt containing aqueous solution, after ultrasonically dispersing, transferring to the autoclave, reacting at the temperature of 200 to 240 DEG C and under the pressure of 15 to 25atm, finally forming the lead zirconate titanate coated carbon fibers. The two-step hydrothermal preparation method of the lead zirconate titanate coated carbon fibers disclosed by the invention is simple and convenient, easy to operate, simple in equipment and beneficial to saving the product cost and further realizes complete growth of lead zirconate titanate polycrystalline coatings.

Description

technical field [0001] The invention relates to the technical field of fiber material preparation. Background technique [0002] In recent years, piezoelectric ceramics have shown important application value in acoustics and sensors. Compared with bulk and film materials, piezoelectric materials in the form of fibers are considered to have more excellent piezoelectric properties. At present, piezoelectric ceramic fibers have been prepared by means of sol-gel method, suspension spinning, extrusion method and electrospinning method. However, piezoelectric ceramic fibers have the disadvantage of poor mechanical properties, and they are usually used as basic elements to prepare type 1-3 piezoelectric composites, which greatly limits their practical application. [0003] Carbon fiber has the advantages of good electrical conductivity, high strength, and high elasticity. Treating its surface and introducing ceramic coating can greatly improve its application value in related fie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M11/46C01G25/00D06M101/40
CPCC01G25/006C01P2002/72C01P2004/03D06M11/46D06M2101/40
Inventor 高玲玲
Owner HEBEI UNIVERSITY OF SCIENCE AND TECHNOLOGY
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