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Method for preparing lead zirconate titanate ceramics fibre

A technology of lead zirconate titanate and ceramic fiber, applied in the field of ceramic fiber, which can solve the problems of harmfulness to human health, high toxicity, and difficulty in control

Inactive Publication Date: 2008-06-04
XIAMEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In 1985, J.B.Blum and S.R.Gurkovich (J.B.Blum and S.R.Gurkovich, J.Mater.Sci, 1985, 20:4479) and K.D.Budd (K.D.Budd, S.K.Dey, D.A.payne, Proc.Br.Ceram.Soc., 1985 , 36:107) developed a method to prepare PbTiO by reacting easily available lead acetate with Ti alkoxide in ethylene glycol monomethyl ether. 3 The method of sol has aroused widespread interest and is widely used. Since then, ethylene glycol monomethyl ether has become the main solvent of the PZT sol system. However, ethylene glycol monomethyl ether is more toxic and harmful to human health.
In 1992, N.J.Philips et al. (N.J.Phillips, M.L.Calzada, S.J.Milne, J.Non-Cryst.Solids, 1992,285:147-148) proposed to use propylene glycol [HO(CH 2 ) 3 OH] is used as a solvent to prepare Pb-Ti dialkoxide. Since dibasic alcohol has two hydroxyl groups, it can be combined with -Pb and -Ti respectively during the reaction, and self-polymerization can also occur. The dibasic alcohol base Pb- The structure of Ti dialkoxide is complex and difficult to control

Method used

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  • Method for preparing lead zirconate titanate ceramics fibre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1), 5.8018 grams of Pb (OOCH 3 ) 2 ·3H 2 O was added to 20ml of n-butanol, after shaking well, 12.85ml of glacial acetic acid was added, and the mixed solution was heated to 80°C until Pb(OOCH 3 ) 2 ·3H 2 O was completely dissolved to obtain a colorless clear solution, which was cooled to room temperature to obtain a lead source solution. Add 3.74ml of zirconium butoxide and 2.53ml of titanium butoxide into 20ml of n-butanol in sequence, stir magnetically for half an hour, add 3.09ml of acetylacetone, stir for half an hour, and then reflux the mixed solution at 75°C for one hour. After cooling, zirconium source and titanium source solutions are obtained. Mix the above-mentioned lead source solution with zirconium and titanium source solutions at room temperature, and then reflux at 120° C. for one hour. The obtained yellow transparent solution is the PZT precursor solution, and the pH value of the solution is 3.5-3.9.

[0031] (2) The precursor solution was magne...

Embodiment 2

[0034] Example 2: Same as Example 1, the difference is that when the sintering temperature is 900° C., the obtained PZT ceramic fiber surface has fine grains (<0.5 μm), and the surface is relatively smooth and flat.

Embodiment 3

[0035] Embodiment 3: Same as Embodiment 1, the difference is that when the sintering temperature is 1000° C., the obtained PZT ceramic fiber has surface grains smaller than 1 μm, and the surface is relatively rough.

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Abstract

The invention provides a preparation method of lead zirconate-titante ceramic fiber, which relates to a ceramic fiber. The fiber obtained with the diameter less than 30Mum and the length about 1cm has a single perovskite phase and comparatively high consistency and the invention can be a preparation method of lead zirconate-titante ceramic fiber of ceramic fiber for 1-3 piezoelectric composites. The preparation of lead zirconate-titante precursor solution is : lead acetate trihydrate is added into n-Butyl alcohol, complexing agent glacial acetic acid is added then; the mixture is heated, dissolved and cooled to obtain solution A; zirconium butoxide and titanium butoxide are poured into the n-Butyl alcohol in sequence to obtain the binary mixed solution of zirconium and titanium, and then acetyl acetone is added into the binary mixed solution and solution B is obtained after backflowing; the solution A and the solution B are mixed and the lead zirconate-titante precursor solution is obtained after backflowing. The preparation of lead zirconate-titante precursor sol is: the lead zirconate-titante precursor solution is steamed, concentrated and stirred, rod winding is carried out and the lead zirconate-titante precursor sol is obtained after concentration; lead zirconate-titante gel fiber is obtained through fiber drawing; after aging, the lead zirconate-titante gel fiber is dried and carried out by heat treatment.

Description

technical field [0001] The invention relates to a ceramic fiber, in particular to a preparation method of lead zirconate titanate (PZT) ceramic fiber mainly used in 1-3 piezoelectric composite materials. Background technique [0002] Lead zirconate titanate (molecular formula is Pb(Zr x Ti 1-x )O 3 , referred to as PZT) is an important piezoelectric and ferroelectric material with high electromechanical coupling coefficient, piezoelectric coefficient and dielectric constant, and is widely used in infrared pyroelectric detectors, high-frequency filters and piezoelectric ultrasonic sensors, etc. technology field. In recent years, with the development of electronic devices and optoelectronic devices towards miniaturization, integration and intelligence, piezoelectric materials in the form of thin films and fibers have received extensive attention, and have become a hot spot in the field of new functional materials in the world. Piezoelectric composite materials made of piez...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/491C04B35/624
Inventor 熊兆贤麦满芳薛昊陈立富
Owner XIAMEN UNIV
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