CN1017301B - Thick-film electrode material and preparing method thereof - Google Patents
Thick-film electrode material and preparing method thereofInfo
- Publication number
- CN1017301B CN1017301B CN 90100537 CN90100537A CN1017301B CN 1017301 B CN1017301 B CN 1017301B CN 90100537 CN90100537 CN 90100537 CN 90100537 A CN90100537 A CN 90100537A CN 1017301 B CN1017301 B CN 1017301B
- Authority
- CN
- China
- Prior art keywords
- composite materials
- silver
- inorganic composite
- membrane electrode
- conductive
- 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.)
- Expired
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- Conductive Materials (AREA)
- Compositions Of Oxide Ceramics (AREA)
Abstract
The present invention relates to a thick film electrode of ceramic inorganic composite materials and a preparing method thereof. Inorganic binders composed of various oxides of metal conductive powder, nonmetal conductive powder, etc. are mixed; all kinds of conductive powder are mutually overlapped by a screen printing technology, a sintering technology, etc. to form a microscopic network type conductive channel. The thick film electrode comprises graphite, silver, a lead oxide, a boron oxide and a silicon oxide. The present invention can be used for preparing electrothermal electrodes or preparing conductive films, conductive connection films, etc. on the surfaces of other temperature resistant insulating materials.
Description
The present invention relates to a kind of thick membrane electrode, it belongs to a kind of ceramic mould inorganic composite materials thick membrane electrode and method for making thereof.
The fifties, the shortcoming that exists at the heating wire mode of heating in the world, cost height (nichrome wire, 100～381 yuan of per kilograms, must be furnished with electric furnace pan, mica sheet and other heatproofs insulation auxiliary material could use), the heat efficiency low (≤75%), useful life is short; Someone has proposed the thin-film electro heater is the imagination of Electric radiant Heating Film.So far the research of this respect is still continuing and is obtaining remarkable progress.Electrode is an indispensable part in the whole electrothermal film technology, present existing electrothermal electrode can be referring to " plated film technology " book (the 182nd page, Zhao Tao, Zhao Junmin compile, National Defense Industry Press's nineteen eighty-two version), three kinds of electrodes have wherein been exemplified, first kind of chemical silvering re-plating copper, shortcoming is that adhesion is poor, easy fracture, rete thin (≤0.012mm), conductive section is little, the easy oxidation of copper layer, and technology is relative complex also; Second kind of silver paste method, argentiferous 100%, the cost height by mechanical attachment, easily comes off fully, can not make thick film equally, and conductive section is little; The third rhodium plating, rhodium are a kind of metals of rare costliness, and cost is higher, have above-mentioned shortcoming too.
The objective of the invention is to propose a kind of inorganic composite materials thick membrane electrode and method for making thereof, it has overcome the shortcoming that above-mentioned electrode exists, it is to add inorganic binder in the conductive powder material, through sintering conductive powder is overlapped mutually and forms that microcosmos network formula conductive channel realizes.
The present invention is made up of graphite powder, silver powder and lead oxide, boron oxide, three kinds of oxides of silica, its set of dispense is than being (weight %): graphite 25～30%, silver 25～30%, lead oxide 30～35%, boron oxide 6～8%, silica 2～4%, wherein the graphite resource abundance is cheap, three kinds of inorganic binder stable performances that oxide is formed are difficult for aging.Thick membrane electrode itself can tolerate rapid heat cycle, does not chap, does not come off.
Manufacture method of the present invention: pulverous lead oxide, boron oxide, silica are fully mixed, under 800～1000 ℃, fuse, make the material piece, through ball milling, sieve after, make that intermediate is standby (can also to add an amount of zinc, sodium, potassium, aluminium, iron, lithium, barium, cobalt, nickel, titanium, zirconium, copper, manganese, bismuth etc. in intermediate, also can selectively add wherein one or more, adopting corresponding oxide or salt compounds is raw material, after mixing with the raw material of intermediate, standby after fusing ball milling, sieving).Then with intermediate and graphite powder, the abundant mixing of silver powder, add an amount of terpinol and be modulated into the suitable slurry of viscosity, adopt silk screen printing, spraying or brushing technology to make required electrode pattern, in 150～200 ℃ of down oven dry 10～20 minutes, place 500～550 ℃ of following sintering 10～15 minutes.
Technical parameter of the present invention:
Resistivity: 10
-3～10
-4Ω-cm
Heatproof: 〉=300 ℃
Moisture-proof: 〉=95%(relative humidity)
Be adapted to ground coefficient of linear expansion scope: 0～300 * 10
-7
Thicknesses of layers scope: 0.05～0.60mm
Introduce derived current scope: 0～15A
Firmness: 100%(contains inorganic binder)
Purposes of the present invention:
1. prepare electrothermal electrode.
2. prepare the conductive attachment film, Electric radiant Heating Film independently can be coupled to each other, or with the Electric radiant Heating Film partial short-circuit.
3. at any other heatproof insulating material surface preparation conducting film.
The present invention compared with prior art has tangible advantage to be: one, can make thick film, thereby enough conductive sections are arranged, can introduce and derive big electric current; Two, preparation technology and material behavior (as ohmic contact) can be complementary with Electric radiant Heating Film, and cost is low, technology is simple, be easy to mechanization, automatic batch production; Three, contain inorganic binder in the component, can on the ground of different coefficient of linear expansion, prepare thick membrane electrode, difference can not occur, the thick membrane electrode stress fracture, the breaking phenomena that are caused owing to the ground coefficient of linear expansion.The contrast of the present invention and prior art sees the following form.
The present invention is compared with the prior art table
Below in conjunction with accompanying drawing proportioning of the present invention and manufacture method are done and to be described in further detail.
Accompanying drawing is the process chart of the embodiment of the invention.
The accompanying drawings embodiments of the invention.
1, prescription: graphite (C) 26.5(wt%)
Silver (Ag) 29.4(wt%)
Lead oxide (PbO) 34.5(wt%)
Boron oxide (B
2O
3) 7.2(wt%)
Silica (SiO
2) 2.4(wt%)
2, method for making (is example with 1 kilogram): take by weighing 345 gram lead oxide powder, 72 gram boron oxide powders, 24 gram silica powders by formula rate.Lead oxide can be with stoichiometric PbO, PbO
2, PbCO
3, basic lead carbonate 2PbCO
3Pb(OH)
2Be raw material, boron oxide can be used stoichiometric B
2O
3, H
3BO
3Be raw material, silica can be used SiO
2Or purity is raw material at the quartz sand more than 98.5%.Above three kinds of oxides are mixed, fuse under 900 ℃, make the material piece, behind ball milling, cross 300 mesh standard sieves, it is standby to make intermediate.With intermediate and graphite powder, the abundant mixing of silver powder, add an amount of terpinol then, be modulated into the suitable slurry of viscosity.Adopt in the required many rings film of silk-screen printing technique (or spraying coating process, brushing technology) preparation: the conductive attachment films between a, conductive electrode b, the two ring films; C, for the ring that makes the annular electro hotting mask inboard more even with ring outside heating power, can prepare triangle partial short-circuit film, after making, dry 10 minutes down in 180 ℃, after 12 minutes, can change the Electric radiant Heating Film of the required figure of the further preparation of operation down in 520 ℃ of following sintering then.Following table is the thick-film electrode material table.
The serial number name property specification
1 graphite (C) non-metal solid powdered form
2 silver medals (Ag) metal solid powdered form
3 lead oxide (PbO) oxide solid powdered form
4 boron oxide (B
2O
3) the oxide solid powdered form
5 silica (SiO
2) the oxide solid powdered form
Claims (7)
1, a kind of ceramic mould inorganic composite materials thick membrane electrode is characterized in that containing (wt%):
25～30 graphite
25～30 silver medals
30～35 lead oxide
6～8 boron oxides
2～4 silica
2,, it is characterized in that graphite is graphite powder according to the said inorganic composite materials thick membrane electrode of claim 1.
3,, it is characterized in that silver is silver powder according to the said inorganic composite materials thick membrane electrode of claim 1.
4, according to the manufacture method of the said inorganic composite materials thick membrane electrode of claim 1, it is characterized in that pulverous lead oxide, boron oxide, silica are fully mixed, fuse and make the material piece, through ball milling, sieve after, it is standby to make intermediate; With intermediate, graphite powder, the abundant mixing of silver powder, add an amount of terpinol and be modulated into the suitable slurry of viscosity then, adopt silk screen printing, spraying or brushing technology to make required electrode pattern, oven dry, sintering.
5,, it is characterized in that the temperature that fuses is 800～1000 ℃ according to the said manufacture method of claim 4.
6,, it is characterized in that the temperature of drying is 150～200 ℃ according to the said manufacture method of claim 4.Drying time is 10～20 minutes.
7, according to the said manufacture method of claim 4, the temperature that it is characterized in that sintering is 500～550 ℃, and the time of sintering is 10～15 minutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100537 CN1017301B (en) | 1990-02-06 | 1990-02-06 | Thick-film electrode material and preparing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 90100537 CN1017301B (en) | 1990-02-06 | 1990-02-06 | Thick-film electrode material and preparing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1053986A CN1053986A (en) | 1991-08-21 |
| CN1017301B true CN1017301B (en) | 1992-07-01 |
Family
ID=4876694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 90100537 Expired CN1017301B (en) | 1990-02-06 | 1990-02-06 | Thick-film electrode material and preparing method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1017301B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411111A (en) * | 2018-09-30 | 2019-03-01 | 镇江华智睿安物联科技有限公司 | A kind of mass spectrum ionization component high-conductivity electrodes plate and preparation method thereof |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101285201B (en) * | 2008-04-12 | 2010-06-02 | 姚贤章 | Process for electrolyzing and producing manganese anode sheet |
| CA2813551C (en) | 2012-04-20 | 2018-10-30 | Goodrich Corporation | Printed heating element |
| CN106686767A (en) * | 2015-11-05 | 2017-05-17 | 中山市乾元高科电子有限公司 | Processing technology of micro-crystal glass heater |
| CN107592688B (en) * | 2017-10-11 | 2020-08-28 | 陈名海 | Electrothermal film and preparation method and application thereof |
| CN113800889B (en) * | 2021-09-10 | 2022-10-28 | 厦门海洋芯科技有限公司 | Carbon Hertz film and application thereof |
-
1990
- 1990-02-06 CN CN 90100537 patent/CN1017301B/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109411111A (en) * | 2018-09-30 | 2019-03-01 | 镇江华智睿安物联科技有限公司 | A kind of mass spectrum ionization component high-conductivity electrodes plate and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1053986A (en) | 1991-08-21 |
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