WO2014166364A1 - Procédé de préparation d'un composite en fibres piézoélectrique - Google Patents

Procédé de préparation d'un composite en fibres piézoélectrique Download PDF

Info

Publication number
WO2014166364A1
WO2014166364A1 PCT/CN2014/074809 CN2014074809W WO2014166364A1 WO 2014166364 A1 WO2014166364 A1 WO 2014166364A1 CN 2014074809 W CN2014074809 W CN 2014074809W WO 2014166364 A1 WO2014166364 A1 WO 2014166364A1
Authority
WO
WIPO (PCT)
Prior art keywords
piezoelectric ceramic
carbon black
green body
piezoelectric
solvent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2014/074809
Other languages
English (en)
Chinese (zh)
Inventor
张斗
张野
林秀娟
周科朝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Central South University
Original Assignee
Central South University
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Central South University filed Critical Central South University
Publication of WO2014166364A1 publication Critical patent/WO2014166364A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/80—Constructional details
    • H10N30/85—Piezoelectric or electrostrictive active materials
    • H10N30/852—Composite materials, e.g. having 1-3 or 2-2 type connectivity
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10N30/00—Piezoelectric or electrostrictive devices
    • H10N30/01—Manufacture or treatment
    • H10N30/09—Forming piezoelectric or electrostrictive materials
    • H10N30/092—Forming composite materials

Definitions

  • the invention relates to a method for preparing a piezoelectric fiber composite.
  • the piezoelectric effect is caused by the existence of asymmetric centers in some crystal structures. Under the action of mechanical stress, the internal positive and negative charge centers will be relatively displaced and polarized, resulting in opposite signs on both ends of the material. The phenomenon of charge is called the positive piezoelectric effect. Conversely, when such materials are subjected to an external electric field, the internal positive and negative charge centers are displaced, resulting in mechanical deformation of the material, called the inverse piezoelectric effect.
  • piezoelectric materials can be used as both a sensor and a driver. It is currently the most widely used type of smart material. Since the 1950s, research on the application of piezoelectric ceramic materials has developed rapidly, such as piezoelectric fuzes, piezoelectric power supplies and other voltage generating devices, as well as vibration accelerometers, fluid monitors and other pressure sensitive sensor components. Development and application. However, for the piezoelectric ceramic block, its hard and brittle characteristics make it impossible to apply to the curved surface, and its large volume and weight also make its application in the intelligent structure greatly limited.
  • NASA Langly Research Center Proposed Piezoelectric Fiber Composites The concept, which consists of piezoelectric ceramic fibers, a polymer matrix and an interdigitated electrode.
  • the composite not only solves the defects of hard and brittle piezoelectric ceramic material, but also has the characteristics of thin thickness, light weight, large bending and torsion, etc., and can be easily attached to various working surfaces including curved surfaces. , greatly expanding the field of its application.
  • piezoelectric fiber composites are widely used in many fields including structural control, shock absorption, energy harvesting and the like.
  • piezoelectric fiber composites such as: W.K Wilkie It is mainly prepared by a thin plate cutting method.
  • a piezoelectric ceramic green body is prepared, and after sintering into a thin plate, equidistant grooves are cut on the surface thereof, and the piezoelectric fiber composite is prepared by a resin encapsulation process.
  • the method can ensure good uniformity between fibers, but the large-sized ceramic thin plate is easily deformed during the sintering process, and the condition control is complicated, and the method has high precision for the cutting equipment, and has large equipment investment and low material utilization rate. Defects such as long production cycle.
  • the above method is difficult to apply to processing piezoelectric fiber composites having fine, uniform fiber spacing, such as less fiber spacing 60 ⁇ m piezoelectric fiber composite.
  • Properly reducing the pitch of the piezoelectric fibers and increasing the content of the piezoelectric phase in the composite is a method to improve the performance of the piezoelectric fiber composite.
  • Zhang Dou A plastic polymer method is proposed, which firstly prepares a green ceramic powder green body and a carbon black green body by a plastic polymer method, and then two kinds of green bodies are arranged in a stack, and the carbon black is sintered to form a pressure.
  • the electric ceramic multilayer structure is formed by filling the structure with a resin, and finally performing the steps of cutting and encapsulating the electrode.
  • the method does not need to rely on high-precision cutting equipment, and the prepared piezoelectric fiber composite fiber has a minimum spacing 5 ⁇ m .
  • this method requires special plastic processing equipment, and the uniformity of the thickness of the green body is difficult to control, and it is necessary to repeatedly process and thin, resulting in high stress and internal structure damage, which tends to cause large fluctuations in product quality and a decrease in the yield.
  • the piezoelectric ceramic green body and the carbon green body prepared by the tape casting process have small internal stress, flexible and controllable thickness, and can directly obtain the piezoelectric ceramic green body and the carbon black green body with the required thickness, thereby obtaining fine and uniform fiber spacing.
  • the composite but the traditional piezoelectric ceramic casting slurry system has problems such as low solid phase content, poor fluidity, and uneven green density, which limits its application.
  • the object of the present invention is to provide a simple process, low equipment requirements, and a product fiber spacing of 3 to 60 ⁇ m. And a method for preparing a piezoelectric fiber composite having stable quality and high yield.
  • Another object of the present invention is to provide an application for optimizing a homogenizing agent for a piezoceramic casting slurry, which can maintain a low viscosity of the slurry while being obtained for casting production while maintaining a high solid phase slurry.
  • the technical solution of the present invention includes:
  • piezoelectric ceramic green body 0.2 to 3.0 ⁇ m piezoelectric ceramic powder, solvent A, dispersant B, plasticizer C , binder D, homogenizing agent E is uniformly mixed to obtain a slurry of piezoelectric ceramics, wherein the weight ratio of solvent A to piezoelectric ceramic powder is (0.25 to 1.50): 1, dispersant B 1 to 5% by weight of the piezoelectric ceramic powder, plasticizer C and binder D are 5 to 10% by weight of the piezoelectric ceramic powder and solvent, respectively, and the homogenizing agent is 5 to 15% by weight of the binder.
  • a piezoelectric ceramic green body having a thickness of 50 to 300 ⁇ m is formed by a casting method, wherein the solvent A is deionized water or absolute ethanol, and the dispersing agent B is one of phosphate ester, corn oil or ammonium polyacrylate.
  • Plasticizer C is phthalate or polyethylene glycol
  • binder D is polyvinyl alcohol or polyvinyl butyral
  • homogenizer E is cyclohexanone
  • binder I is uniformly mixed in proportion, wherein the weight ratio of the solvent F to the carbon black is (2 to 4): 1, the dispersant G is 1 to 3% by weight of the carbon black, the plasticizer H and the binder I Both carbon black and solvent weight 5 to 10%, cast carbon black body 10 ⁇ 100 ⁇ m, wherein solvent F is anhydrous ethanol, dispersant G is byk-163, plasticizer H For phthalate or polyethylene glycol, binder I is polyvinyl butyral;
  • the laminated green body prepared by the step c is heated to a rate of 0.5 to 5 ° C /min to 450 ⁇ 600 °C, then increase the temperature to 1200 ⁇ 1280 °C at 6 ⁇ 10 °C / min, keep warm 0.5 ⁇ 4 After an hour, the furnace is cooled to obtain a piezoelectric ceramic multilayer structure;
  • the interdigitated electrode includes an electrode and a flexible substrate, the electrode is prepared on a flexible substrate, the electrode includes a positive electrode and a negative electrode, and the positive and negative fingers are staggered.
  • Another object of the invention is achieved by using cyclohexanone as The homogenizing agent is added to the slurry of the piezoelectric ceramic so that the piezoelectric ceramic slurry can maintain the low viscosity of the slurry and be used for casting production while obtaining a high solid phase slurry.
  • the high solid content slurry is obtained while maintaining the low viscosity of the slurry, making it suitable for casting production, and at the same time improving
  • the density uniformity of the piezoelectric ceramic green body effectively controls the high shrinkage rate and large deformation amount generated during the sintering process of the casting system, and the preparation process is simple and reliable, and does not need to rely on special equipment.
  • the thickness of the method can be 10 to 100 m m by the method of the invention.
  • the uniform and controllable carbon black green body enables the laminated structure green body to be subjected to subsequent pressurization and thinning, reduces the stress in the green body, and avoids the destruction of the internal structure of the green body, and at the same time, the carbon black green body is sintered without Impurities remain. Therefore, the method can obtain a piezoelectric ceramic fiber composite having a uniform, fine fiber pitch.
  • Figure 1 a is a-c according to the invention Piezoelectric fiber composite green body prepared by the method of step, carbon black sacrificial film in dark region, piezoelectric fiber green body in bright color region;
  • FIG. 1b is a-d according to the invention The resin-packed piezoelectric fiber composite obtained by the method of the step, the bright color region is a piezoelectric fiber, and the dark region is a resin matrix.
  • the fiber pitch is about 10 ⁇ m;
  • FIG. 1c is a-d according to the present invention.
  • the method of step is to obtain a piezoelectric fiber composite after resin encapsulation, wherein the bright color region is a piezoelectric fiber, and the dark region is a resin matrix.
  • the fiber pitch is about 5 ⁇ m;
  • FIG. 1d is a-e according to the present invention.
  • the micro-morphology of the piezoelectric fiber obtained by the step method has no voids between the crystal grains, indicating that the sintering density is high.
  • Figure 2 shows the effect of cyclohexanone on the viscosity of the slurry.
  • the polyline before optimization is uncyclohexanone
  • the solid content of the slurry reaches 70%.
  • the viscosity exceeds 0.5 Pa s and the casting operation cannot be performed.
  • the viscosity is much lower than 0.5 Pa s after the solid content of the slurry reaches 70%. , the casting operation can still be carried out smoothly.
  • Figure 3 shows the PZT of Comparative Example 1.
  • the fiber microstructure diagram there are many gaps between the grains, indicating that the fiber cannot be densified due to the low solid phase content of the slurry.
  • Figure 4 shows the sintered PZT of Comparative Example 2 Piezoelectric ceramic sheets can be seen to be structurally curved and cannot be used for the preparation of piezoelectric fiber composites.
  • This example is a method for preparing a piezoelectric fiber composite in which a PZT piezoelectric fiber and an epoxy resin matrix are combined, and has the following steps:
  • the absolute ethanol and the carbon black powder with a particle size of 25 nm are mixed at a weight ratio of 4:1, and then added to the weight of the carbon black powder by 1%.
  • Byk-163 is a dispersant, mixed into a primary slurry, and then added to the primary slurry in the absolute ethanol and carbon black powder weight 5%
  • Diethyl phthalate is a plasticizer, and the binder is polyvinyl butyral equivalent to 5% by weight of anhydrous ethanol and carbon black powder in the primary slurry, and 10 ⁇ m carbon black is produced by casting method.
  • Billet is a dispersant, mixed into a primary slurry, and then added to the primary slurry in the absolute ethanol and carbon black powder weight 5%
  • Diethyl phthalate is a plasticizer
  • the binder is polyvinyl butyral equivalent to 5% by weight of anhydrous ethanol and carbon black powder in the primary slurry, and 10 ⁇ m carbon black is produced by casting method
  • the carbon black green body prepared with step b and a The piezoelectric ceramic green body prepared by the step is cut according to the required length and width, and is stacked and closely spaced to each other to form a carbon black having a lamellar structure/ Piezoelectric ceramic laminated green body, and then dried to deionized water and anhydrous ethanol to volatilize completely;
  • the laminated green body is heated to 450 °C at a rate of 0.5 °C / min, and then heated to a rate of 6 °C / min to After 1200 °C, after 4 hours of heat preservation, the furnace is cooled to obtain a piezoelectric ceramic multilayer structure;
  • This embodiment is suitable for preparing piezoelectric fiber composites having a fiber pitch of 3 ⁇ m;
  • This example is a method for preparing a piezoelectric fiber composite in which a PZT piezoelectric fiber and an epoxy resin matrix are combined, and has the following steps:
  • the absolute ethanol and the PZT powder with a particle size of 3 ⁇ m are mixed at a weight ratio of 0.25:1, and then the equivalent of PZT is added.
  • the weight of powder 5% of triethyl phosphate is a dispersing agent, and the mixture is uniformly mixed into a primary slurry, and then added to the primary slurry corresponding to 10% by weight of PZT powder and absolute ethanol.
  • the polyethylene glycol is a plasticizer, and the binder is polyvinyl butyral equivalent to 10% by weight of the PZT powder and the absolute ethanol in the primary slurry, and the homogenizing agent is 15% by weight of the binder.
  • Ketone made by casting 300 ⁇ m green body;
  • the absolute ethanol and 250nm carbon black powder are mixed at a weight ratio of 2.3:1, and then added to the weight of the carbon black powder by 3%.
  • Byk-163 is a dispersant, mixed into a primary slurry, and then added to the primary slurry in the absolute ethanol and carbon black powder weight 10%
  • the polyethylene glycol is a plasticizer, and the binder is polyvinyl butyral corresponding to 10% by weight of anhydrous ethanol and carbon black powder in the primary slurry, and a carbon black green body of 100 ⁇ m is formed by casting;
  • the carbon black green body prepared with step b and a The piezoelectric ceramic green body prepared by the step is cut according to the required length and width, and is stacked and closely spaced to each other to form a carbon black having a lamellar structure/ Piezoelectric ceramic laminated green body, and then dried until anhydrous ethanol is completely evaporated;
  • the laminated green body is heated to 600 °C at a rate of 5 °C / min and then heated to a rate of 10 °C /min to After 1280 °C, after 0.5 h of heat preservation, the piezoelectric ceramic multilayer structure is obtained after cooling with the furnace;
  • This embodiment is suitable for preparing a piezoelectric fiber composite having a fiber pitch of 60 ⁇ m;
  • This example is a method for preparing a piezoelectric fiber composite in which a PNN-PZT piezoelectric fiber and an epoxy resin matrix are combined, and has the following steps:
  • the absolute ethanol and the carbon black powder with a particle size of 100 nm are mixed at a weight ratio of 4:1, and then added to the weight of the carbon black powder by 3%.
  • Byk-163 is a dispersant, mixed into a primary slurry, and then added to the primary slurry in the absolute ethanol and carbon black powder weight 8%
  • Tributyl phthalate is a plasticizer, and the binder is polyvinyl butyral equivalent to 8% by weight of the primary slurry anhydrous ethanol and carbon black powder, and 80 ⁇ m carbon black green body is formed by casting method. ;
  • the carbon black green body prepared with step b and a The piezoelectric ceramic green body prepared in the step is cut into several pieces according to the required size, and is stacked and closely spaced to each other, and the carbon black/piezoceramic laminated green body having a lamellar structure is dried, and the solvent is completely evaporated. ;
  • the laminated green body is heated to 500 °C at a rate of 3 °C /min and then heated to a rate of 8 °C /min to After 1250 °C, after 2 hours of heat preservation, the furnace is cooled to obtain a piezoelectric ceramic multilayer structure;
  • This embodiment is suitable for preparing piezoelectric fiber composites having a fiber pitch of 20 ⁇ m;
  • a method for preparing a piezoelectric fiber composite compounded by a PMN-PT piezoelectric fiber and an epoxy resin matrix has the following steps:
  • the carbon black green body prepared with step b and a The piezoelectric ceramic green body prepared by the step is cut according to the required length and width, and is stacked and closely spaced to each other to form a carbon black having a lamellar structure/ Piezoelectric ceramic laminated green body, and then dried until anhydrous ethanol is completely evaporated;
  • the laminated green body is heated to 600 °C at a rate of 5 °C / min and then heated to a rate of 10 °C /min to After 1280 °C, after 0.5 h of heat preservation, the piezoelectric ceramic multilayer structure is obtained after cooling with the furnace;
  • This example is suitable for the preparation of piezoelectric fiber composites having a fiber pitch of 40 ⁇ m.
  • Example 2 The raw materials and operation steps of Example 2 were used, but a.
  • the homogenizer cyclohexanone was not added or added in the step, and the other conditions were unchanged.
  • the corresponding solid content was adjusted to obtain the viscosity line before optimization and after optimization.
  • the viscosity of the obtained PZT slurry is shown in Figure 2.
  • Optimize the third point of the front fold line ie, the last point value
  • the viscosity of the slurry of the resulting PZT slurry with the homogenizer cyclohexanone is significantly higher than that of the third point of the optimized fold line in Figure 2. More than 0.5 Pa At the highest value of s, the slurry will stick to the knife edge, making it impossible to perform the casting operation.
  • Example 2 In the same manner as in Example 2, a. Anhydrous ethanol and PZT powder having a particle size of 3 ⁇ m were mixed at a weight ratio of 2:1. Income See Figure 3 for the PZT fiber microstructure. There are many gaps between the grains, which indicates that there are many voids between the grains due to the low solid content of the slurry, indicating that the fibers cannot be densified due to the low solid content of the slurry.
  • Example 2 In the same manner as in Example 2, b, anhydrous ethanol and 250 nm of carbon black powder were mixed at a weight ratio of 1:1.
  • the resulting sintered See Figure 4 for the PZT piezoelectric ceramic sheet. It can be seen that the structure is curved, which indicates that the PZT sheet is bent after sintering due to the mismatch between the PZT green body and the carbon black green body. Cannot be used in the preparation of piezoelectric fiber composites.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Materials Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Compositions Of Oxide Ceramics (AREA)
  • General Electrical Machinery Utilizing Piezoelectricity, Electrostriction Or Magnetostriction (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne un procédé de préparation d'un composite en fibres piézoélectrique dont les étapes consistent : a. à préparer un comprimé cru de céramique piézoélectrique; b. à préparer un comprimé cru de noir de carbone; c. à couper le comprimé cru de noir de carbone préparé dans l'étape b et le comprimé cru de céramique piézoélectrique qui est préparé et pelliculé dans l'étape a, à effectuer un empilement à des intervalles pour former un comprimé cru stratifié de noir de carbone/céramique piézoélectrique avec une structure lamellaire, et à effectuer un séchage; d. à chauffer le comprimé cru stratifié préparé dans l'étape c à une vitesse comprise entre 0,5 et 5 °C/min jusqu'à une température comprise entre 450 et 600 °C et à chauffer encore le comprimé cru stratifié à une vitesse comprise entre 6 et 10 °C/min jusqu'à une température comprise entre 1200 et 1280 °C, et à refroidir le comprimé cru stratifié avec un four après avoir maintenu la température entre 0,5 et 4 heures, pour obtenir une structure multicouche de céramique piézoélectrique; et e. à injecter de la résine époxy dans la structure multicouche de céramique piézoélectrique obtenue, à effectuer un traitement thermique à une température comprise entre 25 et 60 °C entre 10 et 24 heures, puis à effectuer un découpage pour obtenir une taille requise, et à effectuer une encapsulation au moyen d'une électrode interdigitale, pour obtenir un composite en fibres piézoélectrique. Selon le procédé, un système traditionnel de pâte de revêtement en rideau de céramique piézoélectrique est optimisé, l'uniformité de densité du comprimé cru de céramique piézoélectrique est améliorée, et les problèmes de fort pourcentage de rétrécissement et de déformation importante du système de revêtement en rideau dans un processus de frittage sont régulés efficacement.
PCT/CN2014/074809 2013-04-10 2014-04-04 Procédé de préparation d'un composite en fibres piézoélectrique Ceased WO2014166364A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201310123940.5 2013-04-10
CN201310123940.5A CN103208587B (zh) 2013-04-10 2013-04-10 一种压电纤维复合物的制备方法

Publications (1)

Publication Number Publication Date
WO2014166364A1 true WO2014166364A1 (fr) 2014-10-16

Family

ID=48755738

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2014/074809 Ceased WO2014166364A1 (fr) 2013-04-10 2014-04-04 Procédé de préparation d'un composite en fibres piézoélectrique

Country Status (2)

Country Link
CN (1) CN103208587B (fr)
WO (1) WO2014166364A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108493324A (zh) * 2018-03-16 2018-09-04 济南大学 一种双晶片结构压电纤维复合材料及其制备方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103208587B (zh) * 2013-04-10 2015-07-15 中南大学 一种压电纤维复合物的制备方法
CN107910434B (zh) * 2017-11-13 2019-12-13 中南大学 一种剪切型压电纤维复合材料的制备方法
CN112025920B (zh) * 2020-08-26 2021-10-19 深圳陶陶科技有限公司 撞色陶瓷及其制备方法和应用
CN113013319B (zh) * 2021-02-24 2023-04-07 武汉理工大学 一种基于一体化结构的低频主动抑振系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017760C1 (de) * 2000-04-10 2001-08-16 Festo Ag & Co Piezokeramischer Biegewandler sowie Verwendung des piezokeramischen Biegewandlers
CN102024901A (zh) * 2010-10-21 2011-04-20 南京航空航天大学 一种压电陶瓷纤维复合材料及其制备方法
CN102437282A (zh) * 2011-09-19 2012-05-02 南京航空航天大学 一种压电陶瓷纤维复合材料及其制备方法
CN102584255A (zh) * 2012-02-06 2012-07-18 宁波凯普电子有限公司 超薄压电陶瓷无苯流延改性浆料及其制作方法
CN103208587A (zh) * 2013-04-10 2013-07-17 中南大学 一种压电纤维复合物的制备方法

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5869189A (en) * 1994-04-19 1999-02-09 Massachusetts Institute Of Technology Composites for structural control
JP2010520633A (ja) * 2007-03-05 2010-06-10 ザ ユニバーシティ オブ バーミンガム 圧電複合材料
CN101867013B (zh) * 2010-05-31 2011-11-23 中南大学 叉指状电极

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10017760C1 (de) * 2000-04-10 2001-08-16 Festo Ag & Co Piezokeramischer Biegewandler sowie Verwendung des piezokeramischen Biegewandlers
CN102024901A (zh) * 2010-10-21 2011-04-20 南京航空航天大学 一种压电陶瓷纤维复合材料及其制备方法
CN102437282A (zh) * 2011-09-19 2012-05-02 南京航空航天大学 一种压电陶瓷纤维复合材料及其制备方法
CN102584255A (zh) * 2012-02-06 2012-07-18 宁波凯普电子有限公司 超薄压电陶瓷无苯流延改性浆料及其制作方法
CN103208587A (zh) * 2013-04-10 2013-07-17 中南大学 一种压电纤维复合物的制备方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108493324A (zh) * 2018-03-16 2018-09-04 济南大学 一种双晶片结构压电纤维复合材料及其制备方法
CN108493324B (zh) * 2018-03-16 2023-02-03 济南大学 一种双晶片结构压电纤维复合材料及其制备方法

Also Published As

Publication number Publication date
CN103208587B (zh) 2015-07-15
CN103208587A (zh) 2013-07-17

Similar Documents

Publication Publication Date Title
WO2014166364A1 (fr) Procédé de préparation d'un composite en fibres piézoélectrique
Tao et al. Optimization of energy storage density in relaxor (K, Na, Bi) NbO3 ceramics
CN107903055B (zh) 一种梯度掺杂钛酸铋钠基多层无铅压电陶瓷
CN102180665A (zh) 一种钪酸铋—钛酸铅高温压电陶瓷材料及其制备方法
JP5905292B2 (ja) 圧電素子及び圧電素子の製造方法
Jia et al. Extremely large strain response under low driving electric fields in lead-based textured piezoelectric ceramics
Jiang et al. New potassium–sodium niobate ternary system with large piezoelectric coefficient and high Curie temperature
CN109836150A (zh) 一种基于织构化高温压电陶瓷的多层陶瓷致动器
CN108383522A (zh) 一种低温快速烧结制备pzt压电陶瓷的方法及压电陶瓷
CN100497257C (zh) 多晶织构陶瓷材料的制备方法
CN116120054A (zh) 一种钛酸铋钙基压电陶瓷材料及其制备方法
CN117602927B (zh) 陶瓷材料及其制备方法和应用
CN113880574A (zh) 一种基于pzt-5型陶瓷晶片堆叠烧结方法
You et al. Enhanced strain properties and temperature stability in textured potassium niobate sodium-based multilayer piezoelectric actuators
Kumar Biswal et al. Designing and synthesis of a polymer matrix piezoelectric composite for energy harvesting
CN115968247A (zh) 一种无铅织构压电驱动器及其制备方法
CN102610740B (zh) 螺旋并联高性能压电复合材料的制备方法
JP3419008B2 (ja) 圧電素子の製造方法
CN114736015B (zh) 一种采用真空热压烧结炉制备的插层锆钛酸钡钙基无铅压电陶瓷及其制备方法
CN101239821A (zh) 一种钛钪锑酸铅铋锂系弛豫铁电陶瓷及其用途
CN116606138B (zh) 一种压电陶瓷及其制备方法和应用
CN121005567B (zh) 一种高温压电陶瓷及其制备方法、高温压电器件
KR102627416B1 (ko) 압전 특성이 향상된 삼성분계 압전 세라믹의 제조 방법
Ji et al. Improved piezoelectric properties of (Bi, Sc) O3–(Pb, Ti) O3 ceramics based on the two-step sintering process
JP2964710B2 (ja) グラファイトの製造方法

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 14783509

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 14783509

Country of ref document: EP

Kind code of ref document: A1