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Formula and preparation method of piezoelectric vibrator ceramic material specially used for smoke alarm

A smoke alarm, piezoelectric vibrator technology, applied in the field of piezoelectric ceramics, can solve the problem that the electrical performance cannot meet the requirements and the like

Active Publication Date: 2021-11-19
GUIZHOU ZHENHUA HONGYUN ELECTRONICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, domestic scholars have studied the ternary Pb 1-y-z Sr y Ba z (Mg 1 / 3 Nb 2 / 3 )xTi m Zr n o 3 , Pb 1-m Sr m (Mg 1 / 3 Nb 2 / 3 ) x Ti y Zr z o 3 0.41[xPb(Mg 1 / 2 W 1 / 2 )O 3 +yPb(Sb 1 / 2 Nb 1 / 2 )O 3 +(1-x-y)Pb(Ni 1 / 3 Nb 2 / 3 )O 3 ]+0.59Pb(Zr z Ti 1-z )O 3 Other piezoelectric materials have been studied, but their electrical properties cannot meet the requirements

Method used

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  • Formula and preparation method of piezoelectric vibrator ceramic material specially used for smoke alarm
  • Formula and preparation method of piezoelectric vibrator ceramic material specially used for smoke alarm
  • Formula and preparation method of piezoelectric vibrator ceramic material specially used for smoke alarm

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A ternary system (PSN-PZT) piezoelectric ceramic for a piezoelectric vibrator dedicated to a smoke alarm, which is prepared by the following method: according to the ternary system (PSN-PZT) piezoelectric ceramic The formula stoichiometric general formula is: Pb 1-x- y m x Z y (Sb 1 / 3 Nb 2 / 3 ) 0.02 (Zr 1 / 2 Ti 1 / 2 ) 0.98 , where, x=0.06, y=0.1, M, Z include SrCO 3 、BaCO 3 , CaCO 3 , MgCO 3 At least two of them, select the raw material Pb 3 o 4 , SrCO 3 , BaCO 3 , ZrO 2 , CaCO 3 , MgCO 3， TiO 2 , Sb2 o 3 , Nb 2 o 5 (analytical pure) and mixed with deionized water, ball milled for 4 hours for the first time to obtain the first slurry, dried, placed in a furnace at 1050 ° C for 2 hours, cooled to obtain pre-calcined materials.

[0021] The pre-calcined material was mixed with deionized water and ball-milled for the second time for 4 hours to obtain a second slurry. The second slurry was dried and crushed to obtain a second under-sieve material. The s...

Embodiment 2

[0023] A ternary system (PSN-PZT) piezoelectric ceramic for a piezoelectric vibrator dedicated to a smoke alarm, which is prepared by the following method: according to the ternary system (PSN-PZT) piezoelectric ceramic The formula stoichiometric general formula is: Pb 1-x- y m x Z y (Sb 1 / 3 Nb 2 / 3 ) 0.02 (Zr 1 / 2 Ti 1 / 2 ) 0.98 , where, x=0.1, y=0.08, M, Z include SrCO 3 、BaCO 3 , CaCO 3 , MgCO 3 At least two of them, select the raw material Pb 3 o 4 , SrCO 3 , BaCO 3 , ZrO 2 , CaCO 3 , MgCO 3， TiO 2 , Sb 2 o 3 , Nb 2 o 5 (analytical pure) and mixed with deionized water, ball milled for 4 hours for the first time to obtain the first slurry, dried, placed in a furnace at 1100 ° C for 2 hours, cooled to obtain pre-calcined materials. The pre-calcined material was mixed with deionized water and ball-milled for the second time for 4 hours to obtain a second slurry. The second slurry was dried and crushed to obtain a second under-sieve material.

[0024] The...

Embodiment 3

[0026] A ternary system (PSN-PZT) piezoelectric ceramic for a piezoelectric vibrator dedicated to a smoke alarm, which is prepared by the following method: according to the ternary system (PSN-PZT) piezoelectric ceramic The formula stoichiometric general formula is: Pb 1-x- y m x Z y (Sb 1 / 3 Nb 2 / 3 ) 0.02 (Zr 1 / 2 Ti 1 / 2 ) 0.98 , where, x=0.12, y=0.06, M, Z include SrCO 3 、BaCO 3 , CaCO 3 , MgCO 3 At least two of them, select the raw material Pb 3 o 4 , SrCO 3 , BaCO 3 , ZrO 2 , CaCO 3 , MgCO 3， TiO 2 , Sb 2 o 3 , Nb 2 o 5 (analytical pure) and mixed with deionized water, ball milled for 4 hours for the first time to obtain the first slurry, dried, placed in a furnace at 1080 ° C for 2 hours, cooled to obtain pre-calcined materials. The pre-calcined material was mixed with deionized water and ball-milled for the second time for 4 hours to obtain a second slurry. The second slurry was dried and crushed to obtain a second under-sieve material.

[0027] Th...

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Abstract

The invention discloses a special piezoelectric vibrator porcelain material formula for a smoke alarm and a preparation method thereof, and relates to the field of piezoelectric ceramics. The piezoelectric vibrator ceramic material belongs to the ternary system (PSN‑PZT) piezoelectric ceramics, and its formula stoichiometric general formula is: Pb 1‑x‑y m x Z y (Sb 1 / 3 Nb 2 / 3 ) 0.02 (Zr 1 / 2Ti 1 / 2 ) 0.98 , wherein, x=0.0‑0.15, y=0‑0.15, M, Z include compound SrCO 3 、BaCO 3 , CaCO 3 , MgCO 3 At least two of them; the piezoelectric vibrator ceramics are ball-milled for the first time and ball-milled for the second time, and the obtained under-screen material is mixed with a binder, granulated, pressed and formed for debinding treatment, and then obtained by electrode polarization. The preparation method disclosed in the invention is simple and stable in operation and high in yield, and is suitable for industrial popularization and application, and the prepared piezoelectric vibrator is suitable for buzzers for smoke alarms.

Description

technical field [0001] The invention belongs to the field of piezoelectric ceramics, and in particular relates to a special piezoelectric vibrator ceramic formula for a smoke alarm and a preparation method thereof. Background technique [0002] Since the Curie brothers first discovered the piezoelectric effect, after more than 100 years of continuous innovation and development, piezoelectric ceramic materials have been widely used in aerospace, automotive electronics, wireless communications, sensing technology and broadband Internet and other fields, and It occupies an important position in military equipment. Compared with BaTiO3 piezoelectric ceramics, PZT piezoelectric ceramic materials have been widely used due to their higher dielectric constant, piezoelectric constant and electromechanical coupling coefficient. With development, people pay more and more attention to safety, and the smoke alarm market continues to grow, in order to meet market needs. Therefore, schol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/493C04B35/622G08B17/10
CPCC04B35/493C04B35/622C04B2235/3206C04B2235/3208C04B2235/3213C04B2235/3215C04B2235/3251C04B2235/3294C04B2235/656C04B2235/6567G08B17/10
Inventor 戴昭波陈鱼赖炜刘长流张玉芬胡建松欧阳校航
Owner GUIZHOU ZHENHUA HONGYUN ELECTRONICS