CN104231325A - Preparation method of organic carrier - Google Patents
Preparation method of organic carrier Download PDFInfo
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- CN104231325A CN104231325A CN201310253901.7A CN201310253901A CN104231325A CN 104231325 A CN104231325 A CN 104231325A CN 201310253901 A CN201310253901 A CN 201310253901A CN 104231325 A CN104231325 A CN 104231325A
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- terpineol
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Abstract
The invention discloses a preparation method of an organic carrier. The preparation method comprises the following steps: (1) determination of a thickening agent: adopting ethyl cellulose as the thickening agent; (2) selection of organic solvents: adopting tributyl citrate, butyl carbitol, terpilenol and the like as the solvents; (3) selection of other auxiliary agents; and (4) preparation of a formula: dissolving the carrier by adopting the following components in percentage by weight: 8% of ethyl cellulose, 12% of tributyl citrate, 21% of butyl carbitol, 57% of terpilenol and 2% of the auxiliary agents. By adopting the organic carrier in a process disclosed by the invention, slurry has proper viscosity, volatility, thixotropy and levelling properties so as to obtain good printing performance, and a membrane layer subjected to silk-screen printing is uniform, compact, clearer and smoother.
Description
Technical field
The present invention is specially a kind of preparation method of organic carrier.
Background technology
Along with the fast development of microelectronics, the demand of complete electronic set in miniaturization, portable, multi-functional, digitizing and high reliability, high-performance.At present, the most power circuit of world market uses DBC heat radiation, the thick conductor layer that DBC technology can provide power circuit to need, it is the Copper Foil ceramic substrate two sides Direct Bonding 200 ~ 500 μm, and etch figure, relatively be applicable on high temperature and big current, but DBC method can not meet requirement little, thin, light needed for surface mounting technique.Thick-film metalliz method, be exactly by silk screen printing sealing-in metal level, conductor and resistance etc. on ceramic substrate, soldering metal level, circuit and lead contact etc. are formed through sintering, the replacement of silk screen printing copper slurry is adopted to cover copper, the ceramic radiating fin that size is little, thickness is thin, density is high can be prepared, improve the requirement of the density of surface mounting technique wiring.Copper slurry is rolled into by copper metal powder end, glass powder and organic carrier the paste mixed through three-high mill.Wherein organic carrier is polymer dissolution solution in organic solvent, primarily of organic solvent and thickening material composition, Main Function makes slurry have suitable viscosity, volatility, thixotropy and levelling property, to obtain good printing performance, make the even film layer after silk screen printing, densification, clear and smooth.But the process that organic carrier is making has a lot of complex steps, so the preparation method inventing a kind of organic carrier is necessary.
Summary of the invention
Technical problem solved by the invention is the preparation method providing a kind of organic carrier, to solve the problem proposed in above-mentioned background technology.
In order to achieve the above object, the present invention realizes by the following technical solutions:
A preparation method for organic carrier, comprises the following steps:
(1) determination of thickening material:
Thickening material directly affects toughness and the plasticity of slurry, thickening material is generally macromolecule resin, in netted or chain, in customary thickeners, ethyl cellulose is white or grayish mobility powder, there are excellent thermostability, thermoplasticity, alkali resistance, weak acid resistant, salt tolerant, cold-resistant, resistance to water absorbability and anti ageing property etc., dissolve in different organic solvents; Historical facts or anecdotes is tested and is chosen ethyl cellulose as thickening material;
(2) selection of organic solvent:
In conventional solvent, Terpineol 350 volatilization is the fastest, and diethylene glycol monobutyl ether is slightly slow, and tributyl citrate volatilization is the slowest, and the boiling characteristics of organic carrier depends on the boiling characteristics of solvent; The defects such as it is organic solvent that historical facts or anecdotes tests Terpineol 350, diethylene glycol monobutyl ether, the tributyl citrate of selecting different boiling, contributes to demixing of solvents volatilization in sintering process, the bubble of the copper thick film inside avoiding solvent to volatilize within the same temperature stage causing;
(3) selection of other auxiliary agents:
Experiment adopts Yelkin TTS as tensio-active agent, enables the surface of the fully wetting solid particulate of organic carrier; In order to improve the thixotropy of slurry, experiment adds Viscotrol C as thixotropic agent; In order to the secondary flow phenomenon easily occurred when controlling to burn till, improve the levelling property of slurry, experiment adds furancarboxylic acid as flow agent;
(4) formula is made:
Select ethyl cellulose 8%, tributyl citrate 12%, butyl click adjoins alcohol 21%, Terpineol 350 57%, other auxiliary agents 2% dissolve carrier, and flow time is 10-15 minute, time of drying is 5-10 minute, and sintering temperature is 850-860 DEG C, and sintering time is 10-15 minute.
Further, the common thickening material described in step (1) has ethyl cellulose, soluble cotton, carboxymethyl cellulose, polyvinyltoluene, polyvinyl alcohol, rosin, poly-methacrylate fat etc.
Further, the conventional solvent described in step (2) has kerosene, industrial spirit, Terpineol 350, diethylene glycol monobutyl ether, turps, citric acid three fourth vinegar etc.
Beneficial effect:
Organic carrier in present invention process makes slurry have suitable viscosity, volatility, thixotropy and levelling property, to obtain good printing performance, makes the rete after silk screen printing not only even, fine and close, more clear, smooth.
Embodiment
Reaching object to make technique means of the present invention, creation characteristic, workflow, using method and effect is easy to understand, below to the specific embodiment of the invention, setting forth the present invention further.
A preparation method for organic carrier, comprises the following steps:
(1) determination of thickening material, adopts ethyl cellulose to make thickening material;
(2) selection of organic solvent, adopts tributyl citrate, diethylene glycol monobutyl ether, Terpineol 350 etc. as solvent;
(3) selection of other auxiliary agents, experiment adopts Yelkin TTS as tensio-active agent, and experiment adds Viscotrol C as thixotropic agent, and experiment adds furancarboxylic acid as flow agent;
(4) formula is made; Select ethyl cellulose 8%, tributyl citrate 12%, butyl click adjoins alcohol 21%, Terpineol 350 57%, other auxiliary agents 2% dissolve carrier, and flow time is 10-15 minute, time of drying is 5-10 minute, and sintering temperature is 850-860 DEG C, and sintering time is 10-15 minute.
More than show and describe ultimate principle of the present invention and principal character and advantage of the present invention; the technician of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and specification sheets just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications; these changes and improvements all fall in the claimed scope of the invention, and application claims protection domain is defined by appending claims and equivalent thereof.
Claims (3)
1. a preparation method for organic carrier, is characterized in that, comprises the following steps:
(1) determination of thickening material, adopts ethyl cellulose to make thickening material;
(2) selection of organic solvent, adopts tributyl citrate, diethylene glycol monobutyl ether, Terpineol 350 etc. as solvent;
(3) selection of other auxiliary agents, experiment adopts Yelkin TTS as tensio-active agent, and experiment adds Viscotrol C as thixotropic agent, and experiment adds furancarboxylic acid as flow agent;
(4) formula is made; Select ethyl cellulose 8%, tributyl citrate 12%, butyl click adjoins alcohol 21%, Terpineol 350 57%, other auxiliary agents 2% dissolve carrier, and flow time is 10-15 minute, time of drying is 5-10 minute, and sintering temperature is 850-860 DEG C, and sintering time is 10-15 minute.
2. the preparation method of a kind of organic carrier according to claim 1, it is characterized in that, the common thickening material described in step (1) has ethyl cellulose, soluble cotton, carboxymethyl cellulose, polyvinyltoluene, polyvinyl alcohol, rosin, poly-methacrylate fat.
3. the preparation method of a kind of organic carrier according to claim 1, is characterized in that, the conventional solvent described in step (2) has kerosene, industrial spirit, Terpineol 350, diethylene glycol monobutyl ether, turps, citric acid three fourth vinegar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310253901.7A CN104231325A (en) | 2013-06-14 | 2013-06-14 | Preparation method of organic carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201310253901.7A CN104231325A (en) | 2013-06-14 | 2013-06-14 | Preparation method of organic carrier |
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| Publication Number | Publication Date |
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| CN104231325A true CN104231325A (en) | 2014-12-24 |
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| CN201310253901.7A Pending CN104231325A (en) | 2013-06-14 | 2013-06-14 | Preparation method of organic carrier |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106397840A (en) * | 2016-08-31 | 2017-02-15 | 安徽斯迈尔电子科技有限公司 | Method for preparing organic carrier in resistance paste |
| CN106631168A (en) * | 2016-12-15 | 2017-05-10 | 湖南省美程陶瓷科技有限公司 | Additive for new energy automobile metallization sealing-in ceramics and preparation method thereof |
| CN106847373A (en) * | 2017-03-30 | 2017-06-13 | 中国振华集团云科电子有限公司 | A kind of formula of chip resistor conductor silver paste |
| CN107254127A (en) * | 2017-05-19 | 2017-10-17 | 佛山标天下信息科技有限公司 | Electrode slurry organic carrier of fuel cell and preparation method thereof |
| CN107611186A (en) * | 2017-10-21 | 2018-01-19 | 长沙仲善新能源科技有限公司 | Crystal silicon solar energy battery positive conductive silver paste and preparation method thereof |
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| CN101710497A (en) * | 2009-12-08 | 2010-05-19 | 华中科技大学 | Nano-silver conductive slurry |
| CN101728439A (en) * | 2009-12-01 | 2010-06-09 | 洛阳神佳电子陶瓷有限公司 | Aluminum pulp composition of crystal silicon solar cell and preparation method thereof |
| CN102592709A (en) * | 2012-02-13 | 2012-07-18 | 江苏瑞德新能源科技有限公司 | Organic carrier for conductor silver slurry for solar energy battery and preparation method thereof and conductor silver slurry containing organic carrier |
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Patent Citations (3)
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| CN101728439A (en) * | 2009-12-01 | 2010-06-09 | 洛阳神佳电子陶瓷有限公司 | Aluminum pulp composition of crystal silicon solar cell and preparation method thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106397840A (en) * | 2016-08-31 | 2017-02-15 | 安徽斯迈尔电子科技有限公司 | Method for preparing organic carrier in resistance paste |
| CN106631168A (en) * | 2016-12-15 | 2017-05-10 | 湖南省美程陶瓷科技有限公司 | Additive for new energy automobile metallization sealing-in ceramics and preparation method thereof |
| CN106847373A (en) * | 2017-03-30 | 2017-06-13 | 中国振华集团云科电子有限公司 | A kind of formula of chip resistor conductor silver paste |
| CN107254127A (en) * | 2017-05-19 | 2017-10-17 | 佛山标天下信息科技有限公司 | Electrode slurry organic carrier of fuel cell and preparation method thereof |
| CN107611186A (en) * | 2017-10-21 | 2018-01-19 | 长沙仲善新能源科技有限公司 | Crystal silicon solar energy battery positive conductive silver paste and preparation method thereof |
| CN107611186B (en) * | 2017-10-21 | 2019-07-09 | 山西森达源科技集团有限公司 | Crystal silicon solar energy battery positive conductive silver paste and preparation method thereof |
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Application publication date: 20141224 |
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