Patent Translate Powered by EPO and Google Notice This translation is machine-generated. It cannot be guaranteed that it is intelligible, accurate, complete, reliable or fit for specific purposes. Critical decisions, such as commercially relevant or financial decisions, should not be based on machine-translation output. DESCRIPTION JPS50148900 Patent Office Secretary 2 Inventor Name-"wv't Pan (other 2) 3 Patent Applicant Address ° Osaka Prefecture Kadoma City Ogata Kamon Shinkan Address 1002 Name (582) Matsushita Electric Industrial Co., Ltd. Representative Masaharu Matsushita 4th, reason Person 、 571. HousingOsaka Prefecture Kadoma City Oza Kadoma 1006 ■ Japan Patent Office 0 JP 50-148 9900 JPN 50. (1975) 11.28 ■ Japanese Patent Application No. 4 '? -5'l / 47 [phase] Japanese Patent Application No. 41 (197 to t) r, "6466466.5" 76g2454, specification 1, title of the invention Method of manufacturing piezoelectric material a1 Detailed description of the invention and 8 inventions: 黴 強 ′ ′ ・ ・ ′ ′ ′ ′ ′ kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl kl. Method of manufacturing a piezoelectric material characterized in that the composite resin is molded with an insulating resin and then electretized. According to the manufacturing method of the present invention, a piezoelectric material which is rich in flexibility and exhibits a very high piezoelectric 皐It's something you can get. As a conventional piezoelectric material, an inorganic crystal material is generally used. A crystal was known. In recent years, barium titanate. Ceramic ferroelectric ceramics such as zircon and lead titanate are the mainstream. -These inorganic piezoelectric materials have high piezoelectricity and can be obtained from turtle butterflies! The lt-shaped processing is a surrounding motion, and a thin and flexible piezoelectric body can not be obtained, and the shape is often limited in application. However, recently, it has been confirmed that even polymers have piezoelectric properties, and 1 The various polymers 74 have been investigated for their piezoelectric constants 1 For example, polyvinyl fluoride, polyvinylidene fluoride, polyvinyl chloride , Polyvinylidene chloride, nylon 11. ナイロン12. Thermoplastic resin such as polycarbonate and polymethyl methacrylate. When a direct current high voltage is applied to these polymer films, the piezoelectric effect is obtained, and it is further found that, in 04-05-2019 1 specific trees and oils, if the film stretched in advance is electretized, it has a large piezoelectric effect. -. The term "electretization" as used herein refers to raising the temperature in a high electric field applied to the polymer film and then cooling to room temperature, and electretizing the polymer film or the control sheet to exit the US9 piezoelectric body # i. EndPage: 1 There is a drawback that the piezoelectric coefficient is extremely small compared to the inorganic piezoelectric material. However, it is easy to form and process. Since a thin and flexible film is obtained, it can also be expected in applications different from inorganic piezoelectric materials. Therefore, research on composite piezoelectric materials having both of these characteristics is being carried out. No. 1 By mixing and molding mechanical piezoelectric powder in resin. It is a composite piezoelectric material in which the improvement of the piezoelectricity is shown in FIG. V, and the flexibility of the polymer is maintained. Conventionally, as inorganic piezoelectric powders, ceramics and fine powders such as barium titanate, lead titanate, lead zirconate, and titanium zirconate have been used. However, two-component, three-component inorganic piezoelectric materials can be used as ceramic fine powder, i-composition, ceramic composition with various composition ratios, and a-composition to show high piezoelectricity at 9 o'clock The The present invention provides a method of producing a piezoelectric material which is superior to compounding a ceramic fine powder of an appropriate or compositional range with a thermoplastic resin. The thermoplastic resin according to the present invention refers to polyvinyl difluoride; polyvinyl chloride, polyvinyl chloride, polyvinylidene chloride, polystyrene, polycarbonate, polymethyl methacrylate, and the like. The ternary system of the present invention-a ferroelectric * 9 fy is Pb (Mi; r $ bH)! TiyZrzO3 Pb(CofbH)! TiyZxzOs, Pb (Sb $ bH), TiyZrzOs, Pb (CdfbH), TlyZrzO3, & Tono-k9iy / are mentioned. (However, x-1-y-)-gxl) By using a ceramic fine powder in the vicinity of the oxortropic phase transition composition of a ferroelectric ceramic like one. It has been found that a composite piezoelectric material having a higher piezoelectricity than before can be obtained. In addition, it was found that, in particular, when it is within the range shown in FIG. Ceramics with compositions near the morphotropic phase transition exhibit high piezoelectricity when they are composites because they are sensitive to external stress. 'Especially, electro mechanical coupling? It was found to be effective when combined with a large number of ceramics. Examples of the present invention will be described below. [Example 1] Inducer 1-body ceramic Pb (Mg, / ib,)! Between the composition of TiyZrgO3, (where x-)-y dew point 1) @ tx = 0.12 to O, 't 4.7 = 0.46 to 0.4 T, 寞 mO, 41 to 0.43 (see 11121 m) ) 0 composition range where x is a sample obtained by compound molding of ceramic fine powder and polyvinylidene fluoride (hereinafter referred to as PVF2) taken at K 0 as xxamp 1 · x 0, 37 to 0.40, y = o, ss to 0.41 ,! No. 22 to 0.26 (see FIG. A) l1 cND PvF2 cross IK synthetic shape 9 trial shaping molding amp 1 · 2. Similarly, one composition range 8 is X = 0.1δ to 0.20, 7zO, 60− + 0.62, E =, 0.80 to 0.38 (see 11112) and nine samples? 8amp1、 3とする。 Samples 1 to 34 are Pb (hitsfb-t, h), TiyZr dewpoint '03 powder no less than 20 pl! After kneading the PVF2 (L'z ') 20 pt with a hot roll and performing press molding. , And heated to ˜ 86 ° C., 2501 cIII> -direct current 1. A voltage was applied in the thickness direction, and 04-05-2019 2 was maintained for 3 hours in the condition of the dimension and cooled for 30 minutes. The piezoelectric coefficients of the samples obtained above were measured, and the order of Tatokoro, jE electrode size pi, Sample 1> 8 ampl + 2) Sample 3 was obtained. Assuming that the value of Sample 3 is 1, 8 ampl · 2 is 1.6 times of that and 8 ampl · 1 is 3 times that. EXAMPLE 2 After grinding barium titanate in a ball mill. A sample composite-molded with Pvv2 in the same manner as Example 1 is referred to as Sample A. The same conditions as in Example 1 were applied to Samplea No forming condition 3 polarization conditions. When the magnitude of the piezoelectric coefficient is set to 1 (SampleAn), Sample 1 kx is δ, Sample 2 is 3 times that, Sample 3 u is 01.6 times. e1に :>g1ahxA−yPbTiO3−zPbZr03=t1PbZr03=11Aは Pb(F@44TaH)03. Pb(Mi4Jbq)Oa。 Pb (Nif%) 03-fk E no strong tlj II body 'e indication f. It is possible to show morphotropiophas @ boundaτy smoothly from the composition of PbTiO3: PbZr0a-48: 8F5% Luo, but it changes according to the kind of A. In the case of FIG. 1, A shows the morphotropic phase boundary in the case of Pb (rain f1) O 3 busy. In the figure, a large-scaled piezoelectric tube is shown at 41% in combination with a ceramic fine powder having one composition ratio of one black portion in the figure. 11E2 BxPb (Mf $%) OsyPbTio, dew point PbZr0. It is a phase diagram of Sansei EndPage: 2 degree distribution yarn. The curved line morphotropiapha @ eboundary is indicated by a solid line. In the S2 diagram, the composition ratios of the ceramic powder at the end of 1.2, 3 usample-1 and sample 2 ° sampl · 3 are shown. The manufacturing method of the present invention is configured as described above, and according to the present invention, it is possible to obtain a piezoelectric material which is rich in flexibility and has a high piezoelectric book. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a ternary diagram of three-component ferroelectric ceramics according to an embodiment of the present invention. Name of agent Attorney Nakao et al. 1 person 1111 Figure 2 Figure 6 Inventors and agents other than those mentioned above End address: 3 04-05-2019 3
© Copyright 2021 DropDoc