CN102856027B - Annular voltage-sensitive resistor and preparation method thereof - Google Patents
Annular voltage-sensitive resistor and preparation method thereof Download PDFInfo
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- CN102856027B CN102856027B CN201210331073.XA CN201210331073A CN102856027B CN 102856027 B CN102856027 B CN 102856027B CN 201210331073 A CN201210331073 A CN 201210331073A CN 102856027 B CN102856027 B CN 102856027B
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Abstract
The invention discloses a kind of preparation method of annular voltage-sensitive resistor, it comprises the following steps: preparation annular electro resistance body; Silk-screened glasses slurry on annular electro resistance body also reserves the position of connecting electrode; Sintering screen printing is brushed with the annular electro resistance body of glass paste; And can the position connecting electrode of connecting electrode.In the preparation method of annular voltage-sensitive resistor of the present invention, annular electro resistance body does not arrange electrode place silk-screened glasses slurry, glass paste thawing when sintering soaks annular electro resistance body and penetrates to infiltrate in annular electro resistance body and forms caniniform state of joining, form a kind of mechanical internal lock to connect, the rupture strength of annular voltage-sensitive resistor can be significantly improved.In addition, the invention also discloses a kind of annular voltage-sensitive resistor.
Description
Technical field
The invention belongs to annular voltage-sensitive resistor preparation field, in particular, the present invention relates to a kind of annular voltage-sensitive resistor with desired mechanical strength and preparation method thereof.
Background technology
Annular voltage-sensitive resistor is a kind of semiconductive ceramic electronic devices and components with pressure-sensitive and capacitive character dual-use function, to be widely used in minisize dc brush motor with arc control, protection brush and to have suppressed noise: having utilized its pressure-sensitive character to absorb the transient state spark that commutator produces, motor brush and winding can be protected; Utilize its capacitance characteristic to suppress electromagnetic interference, the working life of electrical micro-machine can be extended, improve the work quality of electrical micro-machine.
Annular voltage-sensitive resistor generally includes annular electro resistance body and is connected to the electrode of more than three or three on annular electro resistance body, electrode can be divided into end electrode (being distributed in upper surface or the lower surface of annular electro resistance body) and side electrode (being distributed in medial surface or the lateral surface of annular electro resistance body) by its distributing position, as shown in Figure 1, its end electrode of more than three or three 20 ' is distributed on arbitrary end face of annular electro resistance body 10 ' and (Figure 1 shows that upper surface) structure of the annular voltage-sensitive resistor of existing band end electrode; As shown in Figure 2, its side electrode of more than three or three 20 ' is distributed on the lateral surface of annular electro resistance body 10 ' structure of the annular voltage-sensitive resistor of existing band side electrode.
Along with annular voltage-sensitive resistor is towards microminiaturized future development, its thickness is more and more thinner, and external diameter is more and more less, and the mechanical strength of annular voltage-sensitive resistor (as rupture strength) must be caused significantly to reduce.In addition, the application of annular voltage-sensitive resistor is also towards the future development of automatic welding, the requirement of automatic welding to mechanical strength is higher, can not practical requirement according to the mechanical strength of the annular voltage-sensitive resistor obtained by existing technological process (porcelain preparation → shaping → sintering → silver electrode silk-screen → silver ink firing → testing, sorting).
In view of this, necessaryly a kind of annular voltage-sensitive resistor with desired mechanical strength and preparation method thereof is provided.
Summary of the invention
The object of the invention is to: a kind of annular voltage-sensitive resistor with desired mechanical strength and preparation method thereof is provided.
In order to realize foregoing invention object, the invention provides a kind of preparation method of annular voltage-sensitive resistor, it comprises the following steps: preparation annular electro resistance body; Silk-screened glasses slurry on annular electro resistance body reserve can the position of connecting electrode; Sintering screen printing is brushed with the annular electro resistance body of glass paste; And can the position connecting electrode of connecting electrode.
One as the preparation method of annular voltage-sensitive resistor of the present invention is improved, and described glass paste contains glass dust, macromolecule resin and solvent.
One as the preparation method of annular voltage-sensitive resistor of the present invention is improved, described glass dust is B-Bi-Si glass frit, Ca-B-Si glass frit, B-Bi-Si-Al glass frit or its combination, described macromolecule resin is selected from hydrogenated rosin resin, ethyl cellulose, polyethylene, polyurethane resin or its combination, and described solvent is selected from alcoholic solvent, aromatic hydrocarbon solvent, ester solvent, ether solvents, ketone solvent or its combination.
One as the preparation method of annular voltage-sensitive resistor of the present invention is improved, and in described glass paste, the weight content of glass dust is 55 ~ 85%, and the weight content of macromolecule resin is 2 ~ 5%, and the weight content of solvent is 10 ~ 43%.
One as the preparation method of annular voltage-sensitive resistor of the present invention is improved, and the sintering temperature that described screen printing is brushed with the annular electro resistance body of glass paste is 550 ~ 900 DEG C, is preferably 650 ~ 800 DEG C.
One as the preparation method of annular voltage-sensitive resistor of the present invention is improved, repeatedly silk-screened glasses slurry dry sintering on described annular electro resistance body.
One as the preparation method of annular voltage-sensitive resistor of the present invention is improved, and in described silk-screen printing technique, adopts specific pattern to hide annular electro resistance body, makes glass paste can not print position for connecting electrode.
In order to realize foregoing invention object, present invention also offers a kind of annular voltage-sensitive resistor, it comprises annular electro resistance body and is connected to the electrode on annular electro resistance body, and wherein, annular electro resistance body place outside the position being connected with electrode is distributed with the glass paste bed of material through silk screen printing and sintering.
One as annular voltage-sensitive resistor of the present invention is improved, and described Electrode connection is in the upper surface of annular electro resistance body, and the described glass paste bed of material is distributed in the side of described annular electro resistance body.
One as annular voltage-sensitive resistor of the present invention is improved, and described Electrode connection is in the upper surface of described annular electro resistance body, and the described glass paste bed of material is distributed in the lower surface of described annular electro resistance body.
One as annular voltage-sensitive resistor of the present invention is improved, and described Electrode connection is in the upper surface of described annular electro resistance body, and the described glass paste bed of material is distributed in lower surface and the side of described annular electro resistance body.
One as annular voltage-sensitive resistor of the present invention is improved, and described Electrode connection is in the side of described annular electro resistance body, and the described glass paste bed of material is distributed in the upper surface of described annular electro resistance body.
One as annular voltage-sensitive resistor of the present invention is improved, and described Electrode connection is in the side of described annular electro resistance body, and described glass paste is distributed in upper surface and the lower surface of described annular electro resistance body.
One as annular voltage-sensitive resistor of the present invention is improved, and the described glass paste bed of material is formed by the rear sintering on described annular electro resistance body of the glass paste silk screen printing containing glass dust, macromolecule resin and solvent.
One as annular voltage-sensitive resistor of the present invention is improved, described glass dust is B-Bi-Si glass frit, Ca-B-Si glass frit, B-Bi-Si-Al glass frit or its combination, described macromolecule resin is selected from hydrogenated rosin resin, ethyl cellulose, polyethylene, polyurethane resin or its combination, and described solvent is selected from alcoholic solvent, aromatic hydrocarbon solvent, ester solvent, ether solvents, ketone solvent or its combination.
One as annular voltage-sensitive resistor of the present invention is improved, and in described glass paste, the weight content of glass dust is 55 ~ 85%, and the weight content of macromolecule resin is 2 ~ 5%, and the weight content of solvent is 10 ~ 43%.
One as annular voltage-sensitive resistor of the present invention is improved, and the sintering temperature of described glass paste silk screen printing after described annular electro resistance body is 550 ~ 900 DEG C, is preferably 650 ~ 800 DEG C.
One as annular voltage-sensitive resistor of the present invention is improved, and described annular electro resistance body is by ZnO, SrTiO
3, TiO
2, SiC, SnO
2in one or more doping fire and form.
One as annular voltage-sensitive resistor of the present invention is improved, and described electrode is made up of one or more in Ag, Cu, Au, Al, Ni, Pt, Pd, Sn, Zn, In-Ga or copper alloy.
One as annular voltage-sensitive resistor of the present invention is improved, and described annular electro resistance body is Ring-cylindrical, annular or cross section is triangle or trapezoidal ring bodies.
Relative to prior art, annular voltage-sensitive resistor of the present invention and preparation method thereof has following beneficial effect: annular electro resistance body does not arrange electrode place screen printing and is brushed with glass paste, glass paste thawing when sintering soaks annular electro resistance body and penetrates to infiltrate in annular electro resistance body and forms caniniform state of joining, form a kind of mechanical internal lock to connect, therefore can significantly improve the mechanical strength (rupture strength) of annular electro resistance body; In addition, the preparation method of annular voltage-sensitive resistor of the present invention is simple to operate, can practical requirement.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention and Advantageous Effects thereof are described in detail, wherein:
Fig. 1 is the existing structural representation being provided with the annular voltage-sensitive resistor of end electrode.
Fig. 2 is the existing structural representation being provided with the annular voltage-sensitive resistor of side electrode.
Fig. 3 is the structural representation of annular voltage-sensitive resistor first execution mode of the present invention.
Fig. 4 is the structural representation of annular voltage-sensitive resistor second execution mode of the present invention.
Fig. 5 is the structural representation of annular voltage-sensitive resistor of the present invention 3rd execution mode.
Fig. 6 is the structural representation of annular voltage-sensitive resistor of the present invention 4th execution mode.
Fig. 7 is the structural representation of annular voltage-sensitive resistor of the present invention 5th execution mode.
Embodiment
Below in conjunction with embodiment and Figure of description, the present invention is described in further detail, but be understandable that, embodiments of the invention are not limited thereto.
Embodiment 1
According to first embodiment of the invention, the preparation method of annular voltage-sensitive resistor comprises the following steps:
Step 1. is by zinc oxide, cobalt oxide, manganese carbonate and silicon dioxide 95:3:1.5:0.5 batch mixing in molar ratio, and the dry-pressing formed mode of the powder after spray-dried prepares the porcelain base of annular voltage-sensitive resistor;
The porcelain base of preparation in step 1 is carried out binder removal by step 2. at 600 DEG C;
Step 3. by step 2 preparation binder removal after porcelain base in atmosphere 1300 DEG C of sintering make ceramic substrate;
Step 4. adopt silk-screen printing technique by by the B-Bi-Si glass frit of weight ratio 70%, the ethyl cellulose of 3%, the terpinol of 15% and 12% the glass paste silk screen printing prepared of citric acid dibutyl ester on annular electro resistance body, and to dry at 150 DEG C.In silk-screen printing technique, adopt the pattern with given shape to hide the surface of annular electro resistance body, make glass paste can not print the position of annular electro resistance body for connecting electrode, namely reserve the position of connecting electrode.
The ceramic substrate of step 5. glass paste by silk screen printing sinters at 550 DEG C;
Substrate obtained above adopts the technique of silk screen printing silver slurry to be printed onto the end face of pottery by the pattern of regulation by step 6., is dried by silver slurry at 150 DEG C;
Step 7. sinters at the said goods in atmosphere 720 DEG C.
Figure 3 shows that the structural representation of the ring varistor obtained according to first embodiment of the invention, it comprises annular electro resistance body 10, is connected to the electrode 20 of annular electro resistance body 10 upper surface, and is distributed in the glass paste 30 of annular electro resistance body 10 lateral surface.
Detect through experiment, contrast as shown in table 1 according to each scale toroidal varistor that first embodiment of the invention obtains with the rupture strength of the annular voltage-sensitive resistor of corresponding non-printed glass slurry.
The annular voltage-sensitive resistor of the different size that table 1 obtains according to first embodiment of the invention contrasts with the rupture strength of the annular voltage-sensitive resistor of corresponding non-printed glass slurry
Data Comparison as can be seen from table 1, the rupture strength being printed with the annular voltage-sensitive resistor of glass paste obtained according to first embodiment of the invention is obviously better than the rupture strength of the annular voltage-sensitive resistor of corresponding non-printed glass slurry, rupture strength about improves 25%, and the quality of annular voltage-sensitive resistor obtains remarkable improvement.
Embodiment 2
Figure 4 shows that the structural representation of the annular voltage-sensitive resistor obtained according to second embodiment of the invention, it comprises annular electro resistance body 10, is distributed in the electrode 20 of annular electro resistance body 10 upper surface, and is distributed in the glass paste 30 of annular electro resistance body 10 lower surface.
Compared with the first execution mode of the present invention, the difference of second embodiment of the invention is: annular electro resistance body 10 and electrode 20 difference is set; The position that glass paste 30 distributes is different; The sintering temperature that screen printing is brushed with the annular electro resistance body of glass paste is 650 DEG C, and other preparation technologies are identical with first embodiment of the invention, repeat no more.
Detect through experiment, contrast as shown in table 2 according to each scale toroidal varistor that second embodiment of the invention obtains with the rupture strength of the annular voltage-sensitive resistor of corresponding non-printed glass slurry.
The annular voltage-sensitive resistor of the different size that table 2 obtains according to second embodiment of the invention contrasts with the rupture strength of the annular voltage-sensitive resistor of corresponding non-printed glass slurry
Data Comparison as can be seen from table 2, the rupture strength being printed with the annular voltage-sensitive resistor of glass paste obtained according to second embodiment of the invention is obviously better than the rupture strength of the annular voltage-sensitive resistor of corresponding non-printed glass slurry, rupture strength about improves 30%, and the quality of annular voltage-sensitive resistor obtains obvious improvement.
Embodiment 3
Figure 5 shows that the structural representation of the annular voltage-sensitive resistor obtained according to third embodiment of the invention, it comprises annular electro resistance body 10, is distributed in the electrode 20 of annular electro resistance body 10 upper surface, and is distributed in the glass paste 30 of annular electro resistance body 10 lower surface and lateral surface.
Compared with the first execution mode of the present invention, the difference of third embodiment of the invention is: annular electro resistance body 10 and electrode 20 difference is set; The position that glass paste 30 distributes is different; The sintering temperature that screen printing is brushed with the annular electro resistance body of glass paste is 800 DEG C, and other preparation methods are identical with first embodiment of the invention, repeat no more.
Detect through experiment, contrast as shown in table 3 according to each scale toroidal varistor that third embodiment of the invention obtains with the rupture strength of the annular voltage-sensitive resistor of corresponding non-printed glass slurry.
The annular voltage-sensitive resistor of the different size that table 3 obtains according to third embodiment of the invention contrasts with the rupture strength of the annular voltage-sensitive resistor of corresponding non-printed glass slurry.
Data Comparison as can be seen from table 3, the rupture strength being printed with the annular voltage-sensitive resistor of glass paste obtained according to third embodiment of the invention is obviously better than the rupture strength of the annular voltage-sensitive resistor of corresponding non-printed glass slurry, rupture strength about improves 30%, and the quality of annular voltage-sensitive resistor obtains obvious improvement.
Embodiment 4
Figure 6 shows that the structural representation of the annular voltage-sensitive resistor obtained according to four embodiment of the invention, it comprises annular electro resistance body 10, is distributed in the electrode 20 of annular electro resistance body 10 lateral surface, and is distributed in the glass paste 30 of annular electro resistance body 10 upper surface.
Compared with the first execution mode of the present invention, the difference of four embodiment of the invention is: annular electro resistance body 10 and electrode 20 difference is set; The position that glass paste 30 distributes is different; Glass paste contain weight content be 35% Ca-B-Si glass frit and 20% B-Bi-Si glass frit, the ethyl cellulose of 2%, the terpineol of 20% and 23% butyl solvent, other preparations are identical with first embodiment of the invention, repeat no more.
Embodiment 5
Figure 7 shows that the structural representation of the annular voltage-sensitive resistor obtained according to fifth embodiment of the invention, it comprises annular electro resistance body 10, is distributed in the electrode 20 of annular electro resistance body 10 lateral surface, and is distributed in the glass paste 30 of annular electro resistance body 10 upper surface and lower surface.
Compared with the first execution mode of the present invention, the difference of fifth embodiment of the invention is: annular electro resistance body 10 and electrode 20 difference is set; The position that glass paste 30 distributes is different; Weight content be the B-Bi-Si-Al glass frit of 72%, the ethyl cellulose of 3% and 2% hydrogenated rosin resin, the butyl carbitol of 15%, the butyl acetate solvent of 8%, other preparation methods are identical with first embodiment of the invention, repeat no more.
Detect through experiment, relative to the annular voltage-sensitive resistor of non-printed glass slurry, the rupture strength of the annular voltage-sensitive resistor obtained according to the present invention the 4th and the 5th execution mode also all improves about 30%, and the quality of annular voltage-sensitive resistor obtains obvious improvement.
Can find out the detailed description of each embodiment of the present invention in conjunction with above, relative to prior art, annular voltage-sensitive resistor of the present invention and preparation method thereof has following beneficial effect: annular electro resistance body does not arrange electrode place screen printing and is brushed with glass paste, glass paste thawing when sintering soaks annular electro resistance body and penetrates to infiltrate in annular electro resistance body and forms caniniform state of joining, form a kind of mechanical internal lock to connect, therefore can significantly improve the mechanical strength of annular electro resistance body; In addition, the preparation method of annular voltage-sensitive resistor of the present invention is simple to operate, can meet actual production demand.
In addition, it should be noted that, although give the concrete technique of preparation annular electro resistance body and the technique of connecting electrode in embodiment 1 to 5, according to other execution modes of the present invention, preparation annular electro resistance body and connecting electrode also can adopt other existing technique; In addition, the material of electrode is also not limited to the material enumerated in specification.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also carry out suitable change and amendment to above-mentioned execution mode.Therefore, the present invention is not limited to embodiment disclosed and described above, also should fall in the protection range of claim of the present invention modifications and changes more of the present invention.In addition, although employ some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the present invention.
Claims (8)
1. a preparation method for annular voltage-sensitive resistor, is characterized in that, comprises the following steps:
Preparation annular electro resistance body;
Silk-screened glasses slurry on annular electro resistance body reserve can the position of connecting electrode, wherein, glass paste contain weight content be 55 ~ 85% glass dust, weight content be 2 ~ 5% macromolecule resin and weight content be the solvent of 10 ~ 43%;
Sintering screen printing is brushed with the annular electro resistance body of glass paste; And
Can the position connecting electrode of connecting electrode.
2. preparation method according to claim 1, it is characterized in that, described glass dust is B-Bi-Si glass frit, Ca-B-Si glass frit, B-Bi-Si-Al glass frit or its combination, described macromolecule resin is selected from hydrogenated rosin resin, ethyl cellulose, polyethylene, polyurethane resin or its combination, and described solvent is selected from alcoholic solvent, aromatic hydrocarbon solvent, ester solvent, ether solvents, ketone solvent or its combination.
3. preparation method according to claim 1, is characterized in that, the sintering temperature that described screen printing is brushed with the annular electro resistance body of glass paste is 550 ~ 900 DEG C.
4. preparation method according to claim 1, is characterized in that, the sintering temperature that described screen printing is brushed with the annular electro resistance body of glass paste is 650 ~ 800 DEG C.
5. an annular voltage-sensitive resistor, it comprises annular electro resistance body and is connected to the electrode on annular electro resistance body, it is characterized in that, described annular electro resistance body place outside the position being connected with electrode is distributed with the glass paste bed of material through silk screen printing glass paste and sintering, in glass paste, the weight content of glass dust is 55 ~ 85%, and the weight content of macromolecule resin is 2 ~ 5%, and the weight content of solvent is 10 ~ 43%.
6. annular voltage-sensitive resistor according to claim 5, is characterized in that, described Electrode connection is in the upper surface of annular electro resistance body, and the described glass paste bed of material is distributed in the side of described annular electro resistance body; Or described Electrode connection is in the upper surface of described annular electro resistance body, and the described glass paste bed of material is distributed in the lower surface of described annular electro resistance body; Or described Electrode connection is in the upper surface of described annular electro resistance body, and the described glass paste bed of material is distributed in lower surface and the side of described annular electro resistance body; Or described Electrode connection is in the side of described annular electro resistance body, and the described glass paste bed of material is distributed in the upper surface of described annular electro resistance body; Or described electrode is arranged at the side of described annular electro resistance body, described glass paste is distributed in upper surface and the lower surface of described annular electro resistance body.
7. annular voltage-sensitive resistor according to claim 5, is characterized in that, the described glass paste bed of material forms through 550 ~ 900 DEG C of sintering after glass paste silk screen printing is on described annular electro resistance body.
8. annular voltage-sensitive resistor according to claim 5, it is characterized in that, described glass dust is B-Bi-Si glass frit, Ca-B-Si glass frit, B-Bi-Si-Al glass frit or its combination, described macromolecule resin is selected from hydrogenated rosin resin, ethyl cellulose, polyethylene, polyurethane resin or its combination, and described solvent is selected from alcoholic solvent, aromatic hydrocarbon solvent, ester solvent, ether solvents, ketone solvent or its combination.
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| CN201210331073.XA CN102856027B (en) | 2012-09-07 | 2012-09-07 | Annular voltage-sensitive resistor and preparation method thereof |
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| CN201210331073.XA CN102856027B (en) | 2012-09-07 | 2012-09-07 | Annular voltage-sensitive resistor and preparation method thereof |
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| CN105703553B (en) * | 2016-03-07 | 2019-04-23 | 安徽省旌德县星豪电子科技有限公司 | A kind of production method of motor |
| CN105680589B (en) * | 2016-03-07 | 2019-02-19 | 安徽省旌德县星豪电子科技有限公司 | A kind of micro-machine |
| CN106252006A (en) * | 2016-09-22 | 2016-12-21 | 蚌埠万科电子科技有限公司 | The resistor sintered bar of Fast Installation |
| CN106448974A (en) * | 2016-11-06 | 2017-02-22 | 合肥圣达电子科技实业有限公司 | Pressure-sensitive resistor capable of preventing aluminum electrode layer from hydrothermal ageing and invalidation and preparation method of pressure-sensitive resistor |
| CN106782954A (en) * | 2017-02-13 | 2017-05-31 | 爱普科斯电子元器件(珠海保税区)有限公司 | A kind of preparation method and piezo-resistance of the piezo-resistance of resistance to big inrush current shock |
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| CN1838341A (en) * | 2005-03-25 | 2006-09-27 | 松下电器产业株式会社 | Varistor |
| CN101101811A (en) * | 2006-07-04 | 2008-01-09 | 上海易力禾电子有限公司 | Strontium titanate pressure sensitive resistor and its production process |
| CN102177102A (en) * | 2008-10-10 | 2011-09-07 | 株式会社小原 | Glass ceramics and process for production thereof, process for producing sintered glass ceramics, process for producing complex, molded article having photocatalytic function, and hydrophilic molded article |
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| JPH0831616A (en) * | 1994-07-20 | 1996-02-02 | Matsushita Electric Ind Co Ltd | Varistor and manufacture thereof |
| CN1838341A (en) * | 2005-03-25 | 2006-09-27 | 松下电器产业株式会社 | Varistor |
| CN101101811A (en) * | 2006-07-04 | 2008-01-09 | 上海易力禾电子有限公司 | Strontium titanate pressure sensitive resistor and its production process |
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Address after: 511356, Guangdong, Luogang District Yonghe Economic Development Zone, sea road, No. four, No. 4, No. Applicant after: Guangzhou Newlife Magnet Electricity Co., Ltd. Address before: 510640 Guangdong city of Guangzhou province Tianhe District Wushan Jinhui Street No. 88 Applicant before: Guangzhou Newlife Magnet Electricity Co., Ltd. |
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Address after: 511356 No.4, Canghai 4th Road, Yonghe Economic Development Zone, Luogang District, Guangzhou City, Guangdong Province Patentee after: Guangzhou xinlaifu New Material Co.,Ltd. Address before: 511356 No.4, Canghai 4th Road, Yonghe Economic Development Zone, Luogang District, Guangzhou City, Guangdong Province Patentee before: Guangzhou Newlife Magnet Electricity Co.,Ltd. |