CN102522177B - Preparation method of multilayer composite membrane resistor - Google Patents
Preparation method of multilayer composite membrane resistor Download PDFInfo
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- CN102522177B CN102522177B CN 201110411697 CN201110411697A CN102522177B CN 102522177 B CN102522177 B CN 102522177B CN 201110411697 CN201110411697 CN 201110411697 CN 201110411697 A CN201110411697 A CN 201110411697A CN 102522177 B CN102522177 B CN 102522177B
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Abstract
The invention provides a preparation method of a multilayer composite membrane resistor. First, a vitreous glaze resistor layer is sintered on a ceramic substrate; and a synthetic membrane resistor layer is overprinted on the vitreous glaze resistor layer. The advantages of the synthetic membrane resistor layer and the vitreous glaze resistor layer are combined, such that the multilayer compositemembrane resistor is formed. The synthetic membrane resistor layer is advantaged in that a matched electric brush is easy to select, such that a long service life can easily be achieved. The vitreousglaze resistor layer is advantaged in high hydrothermal resistance and stable properties. The resistor provided by the invention can be assembled into a vehicle throttle valve position sensor. As a result of experiment, vehicle throttle valve position sensor application requirements of high precision, long service life and hydrothermal resistance are fully satisfied.
Description
Technical field
The invention belongs to the resistive element technical field, be specifically related to a kind of multilayer complex films resistive element preparation method.
Background technology
Traditional individual layer synthesizes film (as: synthetic carbon film, glass glaze film, conductive plastics etc.) resistive element technology and is widely used in non-wire wound potentiometer, and still, the synthetic film resistance body of individual layer respectively has pluses and minuses on performance.The pluses and minuses of the synthetic film resistance body of individual layer are as described below: the one, synthetic carbon film has the precision height, noise is little and the advantage low to the brush requirement, but the synthetic carbon film life-span low, environment for use is required high, temperature coefficient is big; The 2nd, the glass glaze film has the high life, temperature coefficient is low, environment for use is required low advantage, but glass glaze film precision is low, brush is required high; The 3rd, conductive plastics, it is low to have a precision height, life-span height, temperature coefficient, and environment for use is required low advantage, but generally need import, and expensive.The synthetic film resistance body of above-mentioned individual layer is subjected to the restriction of technology level, still can not satisfy the instructions for use of specific environment for use, particular technology requirement condition lower sensor, therefore is necessary to improve.
Summary of the invention
The technical problem that the present invention solves: a kind of multilayer complex films resistive element preparation method is provided, makes resistive element satisfy specific instructions for uses such as high accuracy, high life, moisture-proof heat, brush requirement are low.
The technical solution used in the present invention: multilayer complex films resistive element preparation method, sintered glass glaze resistive layer on ceramic substrate at first, the synthetic film resistance layer of chromatography on the glass glaze resistive layer is again matched advantage and the glass glaze resistive layer heat resistance ability advantages strong, stable performance that brush reaches the high workload life-span easily with synthetic film resistance layer and is got up to form the multilayer complex films resistive element.
Specifically comprise the steps:
1) formulate glass powdered frit is got glass dust, palladium oxide powder and silver powder, and palladium oxide powder, silver powder and glass dust ratio are 3%-5%: 2%: 93%-95%;
2) Mo is ground in mixing, with ball mill the glass powdered frit for preparing is carried out abundant ball milling, and the ball milling time is no less than 150 hours;
3) silk screen printing, with ground glass powdered frit with stir after organic adhesive mixes, evenly be printed on the ceramic substrate with screen process press, silk screen density 300 orders, the control thickness is between 15 μ m～20 μ m;
4) sintering is put the ceramic substrate that produces in sintering furnace sintering, 700 ℃～900 ℃ of sintering temperatures, and sintering time 2 hours makes organic adhesive decompose volatilization;
5) the preparation resistor fluid is got resin, graphite, carbon black and mixed solvent carry out ball-milling treatment with graphite and carbon black before mixing, and each weight ratio of constituents is that each weight ratio of constituents is resin 70-80 in every part of resistor fluid in every part of resistor fluid, graphite 5-8, carbon black 23-30, mixed solvent 200-300;
6) resistor fluid evenly is printed on the ceramic substrate that sinters with screen process press, silk screen density 200 orders, the control thickness is between 10 μ m～50 μ m;
7) 200 ℃ of bake out temperatures, drying time 2 hours are dried the ceramic substrate of printing the resistor fluid slurry in oven dry;
8) Ageing Treatment is carried out 130 ℃, 24 hours Ageing Treatment with the ceramic substrate after the oven dry.
Further, in the above-mentioned steps 1, the ratio of described palladium oxide powder and silver powder is 1.5: 1.
Further, in the above-mentioned steps 5, each weight ratio of constituents is resin 80 in every part of resistor fluid, graphite 5, carbon black 23, mixed solvent 200.
The present invention compared with prior art, the resistive element that adopts multilayer complex films resistive element preparation method to produce, be assembled into air throttle position sensor of automobile by verification experimental verification, satisfy the instructions for use of air throttle position sensor of automobile high accuracy, high life, moisture-proof heat fully.
Description of drawings
Fig. 1 is the electrical schematic diagram of air throttle position sensor of automobile;
Fig. 2 is air throttle position sensor of automobile core component resistance unit profile schematic diagram.
Embodiment
Below in conjunction with accompanying drawing 1,2 embodiments of the invention are described.
Multilayer complex films resistive element preparation method, sintered glass glaze resistive layer on ceramic substrate at first, the synthetic film resistance layer of chromatography on the glass glaze resistive layer is again matched advantage and the glass glaze resistive layer heat resistance ability advantages strong, stable performance that brush reaches the high workload life-span easily with synthetic film resistance layer and is got up to form the multilayer complex films resistive element.
Embodiment one:
Print resistive element as shown in Figure 2, total resistance value requires to be 2k Ω ± 10%:
1) formulate glass powdered frit is got glass dust 95g, palladium oxide powder 3g, silver powder 2g;
2) Mo is ground in mixing, with ball mill the glass powdered frit for preparing is carried out abundant ball milling, and the ball milling time is no less than 150 hours;
3) silk screen printing, with ground glass powdered frit with stir after organic adhesive mixes, evenly be printed on the ceramic substrate with screen process press, silk screen density 300 orders, the control thickness is between 15 μ m～20 μ m;
4) sintering is put the ceramic substrate that produces in sintering furnace sintering, 700 ℃～900 ℃ of sintering temperatures, and sintering time 2 hours makes organic adhesive decompose volatilization;
5) preparation resistor fluid is got resin 80 grams, graphite 5 grams, and carbon black 23 grams and mixed solvent 200 grams carry out ball-milling treatment with graphite and carbon black before mixing;
6) resistor fluid evenly is printed on the ceramic substrate that sinters with screen process press, silk screen density 200 orders, the control thickness is between 15 μ m～25 μ m;
7) 200 ℃ of bake out temperatures, drying time 2 hours are dried the ceramic substrate of printing the resistor fluid slurry in oven dry;
8) Ageing Treatment is carried out 130 ℃, 24 hours Ageing Treatment with the ceramic substrate after the oven dry.
Embodiment two:
Print total resistance value and require to be the resistive element of 10k Ω ± 20%:
1) formulate glass powdered frit is got glass dust 19g, palladium oxide powder 0.8g, silver powder 0.4g;
2) Mo is ground in mixing, with ball mill the glass powdered frit for preparing is carried out abundant ball milling, and the ball milling time is no less than 150 hours;
3) silk screen printing, with ground glass powdered frit with stir after organic adhesive mixes, evenly be printed on the ceramic substrate with screen process press, silk screen density 300 orders, the control thickness is between 10 μ m～15 μ m;
4) sintering is put the ceramic substrate that produces in sintering furnace sintering, 700 ℃～900 ℃ of sintering temperatures, and sintering time 2 hours makes organic adhesive decompose volatilization;
5) preparation resistor fluid is got resin 70 grams, graphite 8 grams, and carbon black 30 grams and mixed solvent 300 grams carry out ball-milling treatment with graphite and carbon black before mixing;
6) resistor fluid evenly is printed on the ceramic substrate that sinters with screen process press, silk screen density 200 orders, the control thickness is between 20 μ m～30 μ m;
7) 200 ℃ of bake out temperatures, drying time 2 hours are dried the ceramic substrate of printing the resistor fluid slurry in oven dry;
8) Ageing Treatment is carried out 130 ℃, 24 hours Ageing Treatment with the ceramic substrate after the oven dry.
Air throttle position sensor of automobile require resistive element total resistance value precision height, working life height, temperature range is wide, temperature coefficient is little, uses the synthetic carbon film of individual layer or single-glass glaze film resistance body technique all can't all satisfy the transducer instructions for use.As depicted in figs. 1 and 2, all-in resistance is R1+R2+R3 among the figure, and wherein R2 is main operating resistance, adopts multilayer complex films resistive element technology to print, and R1, R3, R4 adopt the synthetic film of individual layer to print.Synthetic film resistance body matched easily brush reaches the advantage in high workload life-span and glass glaze resistive element heat resistance ability is strong, the advantages of stable performance, satisfy the specification requirement of this transducer from principle.
The above only is preferred embodiments of the present invention, so all equivalences of doing according to the described structure of patent application right claimed range of the present invention, feature and principle change or modify, is included in the patent application right claimed range of the present invention.
Claims (3)
1. multilayer complex films resistive element preparation method, it is characterized in that: sintered glass glaze resistive layer on ceramic substrate at first, the synthetic film resistance layer of chromatography on the glass glaze resistive layer is again matched advantage and the glass glaze resistive layer heat resistance ability advantages strong, stable performance that brush reaches the high workload life-span easily with synthetic film resistance layer and is got up to form the multilayer complex films resistive element; And implement according to following step:
1) formulate glass powdered frit is got glass dust, palladium oxide powder and silver powder, and palladium oxide powder, silver powder and glass dust ratio are 3%-5%:2%:93%-95%;
2) Mo is ground in mixing, with ball mill the glass powdered frit for preparing is carried out abundant ball milling, and the ball milling time is no less than 150 hours;
3) silk screen printing, with ground glass powdered frit with stir after organic adhesive mixes, evenly be printed on the ceramic substrate with screen process press, silk screen density 300 orders, the control thickness is between 15 μ m～20 μ m;
4) sintering is put the ceramic substrate that produces in sintering furnace sintering, 700 ℃～900 ℃ of sintering temperatures, and sintering time 2 hours makes organic adhesive decompose volatilization;
5) the preparation resistor fluid is got resin, graphite, and carbon black and mixed solvent carry out ball-milling treatment with graphite and carbon black before mixing, and each weight ratio of constituents is resin 70-80 in every part of resistor fluid, graphite 5-8, carbon black 23-30, mixed solvent 200-300;
6) resistor fluid evenly is printed on the ceramic substrate that sinters with screen process press, silk screen density 200 orders, the control thickness is between 10 μ m～50 μ m;
7) 200 ℃ of bake out temperatures, drying time 2 hours are dried the ceramic substrate of printing the resistor fluid slurry in oven dry;
8) Ageing Treatment is carried out 130 ℃, 24 hours Ageing Treatment with the ceramic substrate after the oven dry.
2. multilayer complex films resistive element preparation method according to claim 1, it is characterized in that: above-mentioned steps 1), the ratio of described palladium oxide powder and silver powder is 1.5:1.
3. multilayer complex films resistive element preparation method according to claim 1, it is characterized in that: above-mentioned steps 5), each weight ratio of constituents is resin 80 in every part of resistor fluid, graphite 5, carbon black 23, mixed solvent 200.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110411697 CN102522177B (en) | 2011-12-12 | 2011-12-12 | Preparation method of multilayer composite membrane resistor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110411697 CN102522177B (en) | 2011-12-12 | 2011-12-12 | Preparation method of multilayer composite membrane resistor |
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| CN102522177A CN102522177A (en) | 2012-06-27 |
| CN102522177B true CN102522177B (en) | 2013-07-17 |
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| CN105068589B (en) * | 2015-07-08 | 2018-01-30 | 上海新跃联汇电子科技有限公司 | A kind of resistive position sensor curve of output repaiies quarter algorithm |
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| CN2069162U (en) * | 1990-01-22 | 1991-01-09 | 秦卫民 | Piezopotentiometer |
| US20040085180A1 (en) * | 2002-10-30 | 2004-05-06 | Cyntec Co., Ltd. | Current sensor, its production substrate, and its production process |
| CN2839963Y (en) * | 2005-09-19 | 2006-11-22 | 周常柱 | Resistance strain type pitch angle detection sensor |
| CN1870358A (en) * | 2006-06-27 | 2006-11-29 | 肖忠渊 | High-speed, low-speed wear-proof conduction brush material made of composite |
| JP5263727B2 (en) * | 2007-11-22 | 2013-08-14 | コーア株式会社 | Resistor |
| CN101553059A (en) * | 2008-04-03 | 2009-10-07 | 惠公 | Method for manufacturing molding thick-film electric heater |
| CN101598924B (en) * | 2009-07-13 | 2011-09-28 | 石磊 | Ceramic heating piece for laser printer and manufacturing process thereof |
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Granted publication date: 20130717 Termination date: 20211212 |