CN103296192B - A method of preparing a bulk thermoelectric material - Google Patents

A method of preparing a bulk thermoelectric material Download PDF

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CN103296192B
CN103296192B CN 201310199274 CN201310199274A CN103296192B CN 103296192 B CN103296192 B CN 103296192B CN 201310199274 CN201310199274 CN 201310199274 CN 201310199274 A CN201310199274 A CN 201310199274A CN 103296192 B CN103296192 B CN 103296192B
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thermoelectric material
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CN103296192A (en )
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袁海滨
易伟欣
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河南理工大学
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Abstract

本发明公开了一种块状热电材料的制备方法,包括下述步骤:第一步,将热电材料粉末、导电粘结剂和分散剂按质量比1:0.1~0.5:0~1的比例称量,混合并搅拌均匀;第二步,将搅拌均匀的原料在超声波振动装置中进行超声波振实;第三步,将超声波振实后的原料在压延装置中压延成厚度为1~5mm的片状;第四步,将片状原料在80~300℃的条件下干燥固化2~60分钟;第五步,将干燥固化后的片状材料进行切割,即可得到块状热电材料。 The present invention discloses a method for preparing a bulk thermoelectric material, comprising the steps of: a first step, the thermoelectric material powder, a conductive adhesive and a dispersant mass ratio of 1: 0.1 to 0.5: 1, said ratio of 0 ~ amount, homogeneously mixed and stirred; the second step, a raw material stir the solid in the ultrasonic vibrator in the ultrasonic vibration device; the third step, the solid material in the ultrasonic transducer after calendering apparatus rolled to a thickness of 1 ~ 5mm sheet like; a fourth step of curing the sheet-like material was dried at 80 ~ 300 ℃ of 2 to 60 minutes; the fifth step, the sheet-like material was dried and solidified is cut to obtain a bulk thermoelectric material. 本发明通过导电粘结剂的固化,将粉末热电材料制备成一定的形状,并使其具有一定的强度和良好的导电性,具有简单、高效、低成本的优点。 By curing the conductive adhesive of the present invention, the powder of the thermoelectric material prepared into a certain shape and it has a certain strength and good conductivity, having a simple, efficient, low cost.

Description

一种块状热电材料的制备方法 A method of preparing a bulk thermoelectric material

技术领域 FIELD

[0001] 本发明属于热电材料制备技术领域,具体涉及一种块状热电材料的制备方法。 [0001] The present invention belongs to the technical field of the preparation of thermoelectric materials, particularly relates to a method for preparing a bulk of the thermoelectric material.

背景技术 Background technique

[0002] 随着工业化进程的发展,大量的煤、石油等化石原料被用于发电和发热,引发了全球性的能源与环境问题,而且这些问题越来越严重。 [0002] With the development of the industrialization process, a large number of coal, oil and other fossil raw materials are used to generate electricity and heat, causing global energy and environmental problems, and these problems getting worse. 热能和电能是现实生活中最重要的能源形态,电能是各种形态能源中传输和使用最多、最为方便的一种。 Heat and electricity are in real life the most important forms of energy, electricity is transmitted in various forms of energy and the most used, the most convenient one. 据有关数据显示,现有的热能中只有约35%得到了利用,而大部分热能则是以废热形式排出,没有得到很好的利用。 According to statistics, the existing heat only about 35 percent has been utilized, and most of the heat energy is discharged as waste heat, not well utilized. 热电材料是一种可以直接将热能和电能进行相互转换的功能材料。 The thermoelectric material is a direct thermal energy and electric energy conversion of the functional material. 由热电材料制成的温差电池可以将热能方便地转换成电能。 Thermoelectric cell made of a thermoelectric material can be easily converted into electrical energy. 而且,温差电池具有重量轻、体积小、无污染、无噪音、安全可靠、能在恶劣环境下工作等特点。 Further, thermoelectric cells having a light weight, small size, pollution, noise, safety and reliability, capable of operating in harsh environments and so on. 因此,在发电方面有着广阔的应用前景。 Therefore, there are broad prospects for application in power generation. 它可以利用低品位热能发电,如利用火电厂、核电站的余热以及汽车和飞机等的尾气余热进行发电。 It can take advantage of low-grade heat generation, such as the use of thermal power plants, nuclear power plants and automobiles and airplanes heat of exhaust waste heat to generate electricity. 若使用温差电池将低品位热能进行充分利用,将可节省大量化石燃料,对缓解日益严重的能源与环境问题,适应低碳经济要求等方面产生巨大作用。 The use of low-grade heat temperature difference battery will be fully utilized, it will be able to save a lot of fossil fuels, have a huge role to alleviate the increasingly serious energy and environmental issues, adaptation to a low-carbon economy requirements.

[0003] 要将热电材料制成温差电池,需要将粉末热电材料制成一定的形状,并且要求它具有一定的强度和良好的导电性。 [0003] To the thermoelectric material thermoelectric cell needs to be a certain shape made of powder of the thermoelectric material, and it requires a certain strength and good electrical conductivity. 目前,常用的将粉末热电材料制成温差电池的方法有三种:第一种,将粉末热电材料经过高温熔炼制备成块状热电材料,然后将块状热电材料切割成小块,装配制成温差电池;第二种,将粉末热电材料通过热压烧结或等离子火花放电烧结烧结成块状,然后将块状热电材料切割成小块,装配制成温差电池;第三种,将粉末热电材料通过热压烧结或等离子火花放电烧结烧结成块状电极,然后利用真空镀膜技术将热电材料制成薄膜,经切割后装配制成温差电池。 At present, the commonly used method of thermoelectric cells formed powder of the thermoelectric material in three ways: first, the high temperature melting powder of the thermoelectric material prepared as a bulk thermoelectric material, then bulk thermoelectric material cut into small pieces, the assembly made of the temperature difference battery; second, the thermoelectric material powder or sintered by spark plasma sintering sintering into blocks, and then the bulk of the thermoelectric material is cut into small pieces, assembly of thermoelectric cells formed; third, the thermoelectric material by powder hot press sintering or spark plasma sintering into sintered bump electrodes, and formed by vacuum thin film coating technology to thermoelectric material, after cutting the assembly formed by the thermoelectric cell. 采用以上三种方法,均需要专用的设备,设备成本高,投入大,而且能耗高,产量小,大大增加了产品的成本,不利于温差电池的推广与应用。 With the above three methods, it requires special equipment, high equipment costs, investment, and high energy consumption, low yield, greatly increasing the cost of the product, is not conducive to the promotion and application of thermo-electric generator.

发明内容 SUMMARY

[0004] 本发明的目的在于提供一种块状热电材料的制备方法,通过导电粘结剂的固化,将粉末热电材料制备成一定的形状,并使其具有一定的强度和良好的导电性,具有简单、高效、低成本的优点。 [0004] The object of the present invention is to provide a method of preparing a bulk of the thermoelectric material, the conductive adhesive prepared by curing the thermoelectric material powder into a certain shape and it has a certain strength and good electrical conductivity, simple, efficient, low cost.

[0005] 本发明采用以下技术方案: [0005] The present invention employs the following technical solution:

[0006] 一种块状热电材料的制备方法,包括下述步骤: [0006] A method of preparing a bulk thermoelectric material, comprising the steps of:

[0007] 第一步,将热电材料粉末、导电粘结剂和分散剂按质量比1:0.1〜0.5:0〜I的比例称量,混合并搅拌均匀; [0007] In a first step, the thermoelectric material powder, a conductive adhesive and a dispersant mass ratio of 1: 0.1~0.5: ratio 0~I weighed, mixed and uniformly stirred;

[0008] 第二步,将搅拌均匀的原料在超声波振动装置中进行超声波振实; [0008] In a second step, a raw material Stir the solid in the ultrasonic vibrator in the ultrasonic vibration device;

[0009] 第三步,将超声波振实后的原料在压延装置中压延成厚度为I〜5mm的片状; [0009] The third step, the solid material in the ultrasonic transducer after calendering apparatus calendered sheet having a thickness of I~5mm;

[0010] 第四步,将片状原料在80〜300°C的条件下干燥固化2〜60分钟; [0010] The fourth step, curing the sheet-like material is dried at 80~300 ° C of 2~60 minutes;

[0011] 第五步,将干燥固化后的片状材料进行切割,即可得到块状热电材料。 [0011] In a fifth step, the dried sheet-like cured material was cut to obtain a bulk thermoelectric material.

[0012] 作为优选,所述的热电材料为:半导体合金型热电材料、金属硅化物热电材料、氧化物热电材料、方钴矿热电材料或稀土硫化物热电材料。 [0012] Advantageously, the thermoelectric material: type thermoelectric semiconductor alloy material, a metal silicide thermoelectric material, oxide thermoelectric materials, thermoelectric materials skutterudite thermoelectric material or a rare earth sulfide.

[0013] 作为优选,所述的导电粘结剂为:导电银楽、导电炭楽、导电铝浆中的一种或几种的混合物。 [0013] Advantageously, said conductive binder: conductive silver yue, yue conductive carbon, a mixture of one or more conductive aluminum paste.

[0014] 作为优选,所述的分散剂为:乙醇、甲醇、丙酮、乙醚中的一种或几种的混合物。 [0014] Preferably, said dispersants are: ethanol, acetone, methanol and a mixture of one or more of ether.

[0015] 作为优选,所述的压延装置为辊压装置或压片机。 [0015] Advantageously, the device is a calender roll apparatus, or a tableting machine.

[0016] 本发明具有的有益效果是: [0016] The present invention has the advantages that:

[0017] (I)因为粉末之间的结合力很小,固化块状热电材料的强度相对于原来的粉末热电材料来说,它具有较好的强度,本发明通过导电粘结剂的固化,将粉末热电材料制备成一定的形状,使产品具有较好的强度,大大降低了块状热电材料的制造成本。 [0017] (I) since the binding force between the powder is very small, the strength of the cured bulk thermoelectric material with respect to the original powder of the thermoelectric material, it has a good strength, the present invention is cured by a conductive adhesive, the prepared powder of the thermoelectric material into a predetermined shape, the product has good strength, greatly reducing the cost of manufacturing bulk thermoelectric material.

[0018] (2)粉末热电材料的粉末与粉末之间接触面很小,导电性能差,通过导电粘结剂固化,一是增加了粉末与粉末之间的接触面积,二是通过导电粘结剂的连接,使其接触面的导电性增加。 [0018] (2) between the powder and the powder of the thermoelectric material powder contact surface is small, poor conductivity, the conductive adhesive is cured by, firstly, to increase the contact area between the powder and the powder through two electrically conductive adhesive agent connection, it increases the conductive contact surface. 本发明通过导电粘结剂的固化,增加了粉末热电材料晶界的导电性。 The present invention, by curing the conductive adhesive, increases the conductivity of the thermoelectric material powder grain boundaries.

[0019] (3)本发明工艺流程短,缩短了块状热电材料的生产周期。 Process [0019] (3) of the present invention is shorter, reducing the production cycle bulk thermoelectric material.

[0020] (4)本发明制备工艺简单,设备投入少,操作简便,生产效率高,制备成本低,产品性能优良,该方法制备的块状热电材料可广泛地应用于温差电池的制造领域,具有良好的工业化应用前景。 [0020] (4) The preparation process is simple, less equipment investment, easy operation, high efficiency, low manufacturing costs, product performance, bulk thermoelectric material prepared by the method can be widely applied in manufacturing thermoelectric cells, with good prospects for industrial application.

附图说明 BRIEF DESCRIPTION

[0021] 图1为实施例1中片状热电材料示意图; [0021] FIG. 1 is a schematic sheet-like thermoelectric material in Example 1;

[0022] 图2为实施例1中块状热电材料示意图; [0022] Fig 2 a schematic view of a bulk thermoelectric material in Example 1;

[0023] 图3为实施例2中片状热电材料示意图; [0023] FIG. 3 is a schematic view of the sheet-like thermoelectric material in Example 2;

[0024] 图4为实施例2中块状热电材料示意图。 [0024] FIG. 4 is a block schematic diagram of embodiments of the thermoelectric material in Example 2.

具体实施方式 detailed description

[0025] 实施例1: [0025] Example 1:

[0026] 将Bi2Te3热电材料粉末(A)与导电银浆(B)、乙醇(C)按质量比A:B:C=1:0.5:1的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在辊压装置中压延成厚度为5mm的片状,如图1所示。 [0026] The thermoelectric material Bi2Te3 powder (A) and the conductive silver paste (B), ethanol (C) mass ratio A: B: C = 1: 0.5: 1 ratio were weighed, mixed and uniformly stirred; Stir the solid material in the ultrasonic transducer in the ultrasonic vibration device; the solid material in the ultrasonic transducer after the roll press apparatus of a sheet rolled to a thickness of 5mm, as shown in FIG. 将片状原料放进干燥箱,在120°C的条件下干燥固化45分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料,如图2所示。 The sheet-like material into the oven, dried and cured at 45 minutes to 120 ° C; drying the sheet material after curing is cut to obtain a bulk thermoelectric material, as shown in FIG. 制备块状热电材料的Seebeck系数为-170 μ V/K,电导率为1.8Χ105 Ω 1.m 1O Seebeck coefficient of the thermoelectric material is bulk preparation -170 μ V / K, the conductivity is 1.8Χ105 Ω 1.m 1O

[0027] 实施例2: [0027] Example 2:

[0028] 将Mg2Si热电材料粉末(A)与导电炭浆(B)、甲醇(C)按质量比A:B:C=1:0.25:0.5的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在压片机中压延成厚度为1_的片状,见图3 ;将片状原料放进干燥箱,在150°C的条件下干燥固化25分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料,见图4。 [0028] The thermoelectric material Mg2Si powder (A) with conductive carbon paste (B), methanol (C) mass ratio A: B: C = 1: 0.25: 0.5 ratio weighed, mixed and uniformly stirred; Stir the ultrasonic vibration device in the raw material in the solid ultrasonic vibrator; raw tap the ultrasonic tableting machine rolled to a sheet thickness 1_, shown in Figure 3; sheet-like material into the oven, at 150 ° C under the dried and cured 25 minutes; the sheet-like material was dried and solidified is cut to obtain a bulk thermoelectric material, see Fig. 制备块状热电材料的Seebeck系数为-550 μν/Κ,电导率为1.1XlO3Ω 1.m 1O Seebeck coefficient of the thermoelectric material is bulk preparation -550 μν / Κ, a conductivity 1.1XlO3Ω 1.m 1O

[0029] 实施例3: [0029] Example 3:

[0030] 将Ca3Co4O9热电材料粉末(A)与导电铝浆(B)、丙酮(C)按质量比A:B:C=1:0.2:0.8的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在辊压装置中压延成厚度为4_的片状;将片状原料放进干燥箱,在300°C的条件下干燥固化2分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料。 [0030] The thermoelectric material Ca3Co4O9 powder (A) with the conductive aluminum paste (B), acetone (C) mass ratio A: B: C = 1: 0.2: 0.8 ratio of weighed, mixed and uniformly stirred; Stir the ultrasonic vibration device in the raw material in the solid ultrasonic vibrator; raw material after the solid ultrasonic transducer means at a roll pressure of a sheet rolled to a thickness of 4_; sheet-like material into the oven, to 300 ° C under conditions in dried and cured for 2 minutes; the sheet-like material was dried and solidified is cut to obtain a bulk thermoelectric material. 制备块状热电材料的Seebeck系数为162 μ V/K,电导率为7.8Χ 13 Ω 1 -m'o Seebeck coefficient of the thermoelectric material is bulk preparation 162 μ V / K, the conductivity is 7.8Χ 13 Ω 1 -m'o

[0031] 实施例4: [0031] Example 4:

[0032] 将FeSi2热电材料粉末(A)与导电银浆(B)、甲醇(C)按质量比A:B:C=1:0.35:0.4的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在压片机中压延成厚度为2_的片状;将片状原料放进干燥箱,在80°C的条件下干燥固化60分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料。 [0032] The thermoelectric material FeSi2 powder (A) and the conductive silver paste (B), methanol (C) mass ratio A: B: C = 1: 0.35: 0.4 ratio weighed, mixed and uniformly stirred; Stir the ultrasonic vibration device in the raw material in the solid ultrasonic vibrator; raw tap the ultrasonic tableting machine rolled to a sheet thickness of 2_; sheet-like material into the oven, under conditions to 80 ° C in dried and cured 60 minutes; the sheet-like material was dried and solidified is cut to obtain a bulk thermoelectric material. 制备块状热电材料的Seebeck系数为140 μ V/K,电导率为3.2 X 12 Ω ^m10 Seebeck coefficient of the thermoelectric material is bulk preparation 140 μ V / K, a conductivity of 3.2 X 12 Ω ^ m10

[0033] 实施例5: [0033] Example 5:

[0034] 将SiGe热电材料粉末(A)与导电铝浆(B)、乙醚(C)按质量比A:B:C=1:0.45:0.6的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在辊压装置中压延成厚度为3_的片状;将片状原料放进干燥箱,在200°C的条件下干燥固化5分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料。 [0034] The SiGe thermoelectric material powder (A) with the conductive aluminum paste (B), ether (C) mass ratio A: B: C = 1: 0.45: 0.6 ratio weighed, mixed and uniformly stirred; Stir the ultrasonic vibration device in the raw material in the solid ultrasonic vibrator; raw material after the solid ultrasonic transducer means at a roll pressure of a sheet rolled to a thickness of 3_; sheet-like material into the oven, to 200 ° C under conditions in dried and cured for 5 minutes; the sheet-like material was dried and solidified is cut to obtain a bulk thermoelectric material. 制备块状热电材料的Seebeck系数为118 μ V/K,电导率为4.8X 14 Ω ^m10 Seebeck coefficient of the thermoelectric material is bulk preparation 118 μ V / K, the conductivity was 4.8X 14 Ω ^ m10

[0035] 实施例6: [0035] Example 6:

[0036] 将CoSb3热电材料粉末(A)与导电银浆(B)、乙醇(C)按质量比A:B:C=1:0.15:0.2的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在压片机中压延成厚度为3_的片状;将片状原料放进干燥箱,在90°C的条件下干燥固化50分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料。 [0036] The thermoelectric material of CoSb3 powder (A) and the conductive silver paste (B), ethanol (C) mass ratio A: B: C = 1: 0.15: 0.2 ratio weighed, mixed and uniformly stirred; Stir the ultrasonic vibration device in the raw material in the solid ultrasonic vibrator; raw tap the ultrasonic tableting machine rolled to a sheet thickness of 3_; sheet-like material into the oven, under conditions of 90 ° C in dried and cured 50 minutes; the sheet-like material was dried and solidified is cut to obtain a bulk thermoelectric material. 制备块状热电材料的Seebeck系数为-75 μ V/K,电导率为1.1 X 14 Ω ^m10 Seebeck coefficient of the thermoelectric material is prepared in bulk -75 μ V / K, a conductivity of 1.1 X 14 Ω ^ m10

[0037] 实施例7: [0037] Example 7:

[0038] 将La2S3热电材料粉末(A)与导电炭浆(B)、乙醚(C)按质量比A:B:C=1:0.4:0.9的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在辊压装置中压延成厚度为5_的片状;将片状原料放进干燥箱,在110°C的条件下干燥固化35分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料。 [0038] The thermoelectric material La2S3 powder (A) with conductive carbon paste (B), ether (C) mass ratio A: B: C = 1: 0.4: 0.9 ratio of weighed, mixed and uniformly stirred; Stir the ultrasonic vibration device in the raw material in the solid ultrasonic vibrator; raw material after the solid ultrasonic transducer means at a roll pressure of a sheet rolled to a thickness of 5_; sheet-like material into the oven, under conditions of 110 ° C dried and cured 35 minutes; the sheet-like material was dried and solidified is cut to obtain a bulk thermoelectric material. 制备块状热电材料的Seebeck系数为-78 μ V/K,电导率为3.9 X 14 Ω ^m10 Seebeck coefficient of the thermoelectric material is prepared in bulk -78 μ V / K, a conductivity of 3.9 X 14 Ω ^ m10

[0039] 实施例8: [0039] Example 8:

[0040] 将NaCo2O4热电材料粉末(A)与导电铝浆(B)按质量比A:B =1:0.35的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在辊压装置中压延成厚度为3_的片状;将片状原料放进干燥箱,在250°C的条件下干燥固化3分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料。 [0040] The thermoelectric material NaCo2O4 powder (A) with the conductive aluminum paste (B) mass ratio A: B = 1: 0.35 ratio of weighed, mixed and uniformly stirred; Stir the raw material in an ultrasonic apparatus the ultrasonic vibration tap; raw material after the solid ultrasonic transducer means at a roll pressure of a sheet rolled to a thickness of 3_; sheet-like material into the oven, dried and cured under conditions to 250 ° C for three minutes; dried after curing the sheet material is cut to obtain a bulk thermoelectric material. 制备块状热电材料的Seebeck系数为52 μ V/K,电导率为5.4 X 12 Ω 1.m 1O Seebeck coefficient of the thermoelectric material is bulk preparation 52 μ V / K, a conductivity of 5.4 X 12 Ω 1.m 1O

[0041] 实施例9: [0041] Example 9:

[0042] 将PbTe热电材料粉末(A)与导电银浆(BI )、导电炭浆(B2)、丙酮(C)按质量比A:B:C=1:0.3:0.3 (其中B=B1+B2)的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在压片机中压延成厚度为2mm的片状;将片状原料放进干燥箱,在130°C的条件下干燥固化35分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料。 [0042] The PbTe thermoelectric material powder (A) with conductive silver paste (BI), a conductive carbon paste (B2), acetone (C) mass ratio A: B: C = 1: 0.3: 0.3 (where B = B1 + B2) ratio were weighed, mixed and uniformly stirred; stir the solid material in the ultrasonic transducer of the ultrasonic vibration device; the solid material in the ultrasonic transducer after the tableting machine to a thickness of 2mm rolled sheet; the sheet like material into the oven, dried and cured at 130 ° C in 35 minutes; the sheet-like material was dried and solidified is cut to obtain a bulk thermoelectric material. 制备块状热电材料的Seebeck系数为-150 μ V/K,电导率为4.2 X 14 Ω 1.1n1O Seebeck coefficient of the thermoelectric material is bulk preparation -150 μ V / K, a conductivity of 4.2 X 14 Ω 1.1n1O

[0043] 实施例10: [0043] Example 10:

[0044] 将Sb2Te3热电材料粉末(A)与导电银浆(B)、乙醇(Cl )、甲醇(C2)按质量比A:Β:C=I:0.25:0.6 (其中C=C1+C2)的比例称量,混合并搅拌均匀;将搅拌均匀的原料在超声波振动装置中进行超声波振实;将超声波振实后的原料在辊压装置中压延成厚度为4mm的片状;将片状原料放进干燥箱,在120°C的条件下干燥固化40分钟;将干燥固化后的片状材料进行切割,即可得到块状热电材料。 [0044] The Sb2Te3 thermoelectric material powder (A) and the conductive silver paste (B), ethanol (Cl), methanol (C2) a mass ratio A: Β: C = I: 0.25: 0.6 (where C = C1 + C2) ratio were weighed, mixed and uniformly stirred; stir the solid material in the ultrasonic transducer of the ultrasonic vibration device; the solid material in the ultrasonic transducer after the roll press apparatus of a sheet rolled to a thickness of 4mm; sheet-like material into the oven, dried and cured at 40 minutes to 120 ° C; drying the sheet material after curing is cut to obtain a bulk thermoelectric material. 制备块状热电材料的Seebeck系数为180 μ V/K,电导率为2.4X 12 Ω 1.1n1O Seebeck coefficient of the thermoelectric material is bulk preparation 180 μ V / K, the conductivity was 2.4X 12 Ω 1.1n1O

Claims (2)

  1. 1.一种块状热电材料的制备方法,其特征在于:包括下述步骤: 第一步,将热电材料粉末、导电粘结剂和分散剂按质量比1:0.1〜0.5:0〜I的比例称量,混合并搅拌均匀; 第二步,将搅拌均匀的原料在超声波振动装置中进行超声波振实; 第三步,将超声波振实后的原料在压延装置中压延成厚度为I〜5_的片状; 第四步,将片状原料在80〜300°C的条件下干燥固化2〜60分钟; 第五步,将干燥固化后的片状材料进行切割,即可得到块状热电材料。 1. A method of preparing a bulk thermoelectric material, characterized by: comprising the steps of: a first step, the thermoelectric material powder, a conductive adhesive and a dispersant mass ratio of 1: 0.1~0.5: 0~I of ratio were weighed, mixed and uniformly stirred; the second step, a raw material stir the solid in the ultrasonic vibrator in the ultrasonic vibration device; the third step, the solid material in the ultrasonic transducer after the rolling means rolling to a thickness of I~5 _ sheet; a fourth step of curing the sheet-like material is dried at 80~300 ° C of 2~60 min; a fifth step, the sheet-like material was dried and solidified is cut to obtain the thermoelectric block material.
  2. 2.根据权利要求1所述的一种块状热电材料的制备方法,其特征在于:所述的压延装置为辊压装置或压片机。 2. According to a method of preparing a bulk thermoelectric material according to claim 1, wherein: said device is a calender roll apparatus, or a tableting machine.
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CN1752241A (en) * 2005-11-11 2006-03-29 北京工业大学 Process for preparing nano/micron composite grain structure Lax-FeCo3Sb12 thermoelectric material
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CN1554580A (en) * 2003-12-22 2004-12-15 华中科技大学 Method and its device for preparing beta-FeSi2 thermoelectric material by laser cintering
CN1752241A (en) * 2005-11-11 2006-03-29 北京工业大学 Process for preparing nano/micron composite grain structure Lax-FeCo3Sb12 thermoelectric material
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