CN102808190B - Environmentally-friendly weak alkaline low-temperature deburring softening solution, and preparation method and use method thereof - Google Patents
Environmentally-friendly weak alkaline low-temperature deburring softening solution, and preparation method and use method thereof Download PDFInfo
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- CN102808190B CN102808190B CN201210319034.8A CN201210319034A CN102808190B CN 102808190 B CN102808190 B CN 102808190B CN 201210319034 A CN201210319034 A CN 201210319034A CN 102808190 B CN102808190 B CN 102808190B
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Abstract
The invention discloses a preparation method and a use method of environmentally-friendly weak alkaline low-temperature deburring softening solution. The environmentally-friendly weak alkaline low-temperature deburring softening solution comprises the components with weight percentages as follows: 10 to 35 percent of tetrahydrofuran, 10 to 35 percent of propylene glycol, 1 to 5 percent of alkyl phenol polyoxyethylene ether, 5 to 20 percent of ethanolamine, 1 to 10 percent of N-methyldiethanolamine and the balance of water. The environment-friendly weak alkaline low-temperature deburring softening solution provided by the invention has the advantages of low use temperature, good softening and flashing effect, no production of poisons and harmful gases, excellent deoiling effect, safety, environmental friendliness, adoption of formula substances completely satisfying of an environmentally-friendly requirement, product stability, simple process, energy conservation and high efficiency, and is convenient to use.
Description
Technical field
The present invention relates to a kind of environment-friendly type weakly alkaline low temperature deburring bating liquor, particularly a kind of preparation and using method thereof of environment-friendly type weakly alkaline low temperature softening liquid of epoxy-plastic packaging chaeta thorn.
Background technology
The electronic product components and parts such as semiconductor packages, pcb board printing, Passive components are before zinc-plated, due to the epoxy resin good fluidity of chip plastic packaging process small molecular, what meeting was unnecessary becomes one deck resin film at substrate surface and pin place row, is commonly called as burr or flash.If this flash is not processed, can cause electrolytic coating bad order, leak copper, so that affect the weldability of product, finally have a strong impact on the reliability of electronic devices and components.Therefore deburring technique is the important component part in electronic component products electroplating process.
Passive components comprises resistance, electric capacity, inductance, coil and magnetics etc., and the output value in recent years has reached 22,000,000,000 dollars.The high growth of Passive components has further promoted the demand that electronic devices and components are electroplated, the pretreatment procedure that therefore urgent need will be supporting with it.In line with the principle of energy-saving high-efficiency environment-friendly, as can be seen here, the market demand of environment-friendly type weakly alkaline low temperature deburring bating liquor is huge.
At present outstanding environment-friendly type weakly alkaline low temperature deburring bating liquor is also little for number, is detected in a small amount of data report of the states such as America and Europe, and also there is no large-scale production & marketing.Domestic traditional method is generally to adopt mineral acid or organic solvent high temperature to soak, and main problem one is that service temperature is high, and energy expenditure is large; At high temperature reactive behavior increase of mineral acid in addition, can corrode metal substrate and plastic-sealed body surface, and organic solvent one is at high temperature easily to cause plastic-sealed body variable color, easily cause in addition the problems such as burning, the safety coefficient of operating environment is little, and general organic solvent is all easily volatilizations at high temperature, produce a large amount of smells, have also caused the waste of material and the energy.There is in addition Some Enterprises to adopt the technique of electrochemical deburring, because need expensive electrolytic deburring device, invisiblely for middle-size and small-size producer increased huge economic pressures, what electrochemical deburring adopted in addition is highly basic electrolysis, also easily metal substrate is caused to corrosion.
Summary of the invention
In order to overcome the deficiencies in the prior art, the invention provides a kind of environment-friendly type weakly alkaline low temperature deburring bating liquor, satisfactory for result, deburring temperature is low, produce without toxic and harmful, whole process safety environmental protection, and because adopted the composite of anion surfactant and nonionogenic tenside, go after flash, the greasy dirt of substrate surface and other pollutents are also removed clean in the lump.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of environment-friendly type weakly alkaline low temperature deburring bating liquor, its each component and weight percent are: tetrahydrofuran (THF) 10-35%, propylene glycol 10-35%, alkylphenol polyoxyethylene 1-5%, thanomin 5-20%, N methyldiethanol amine 1-10%, all the other are water.
The present invention also provides the preparation method of described environment-friendly type weakly alkaline low temperature deburring bating liquor, it is characterized in that comprising the following steps:
In container, add the water of 2/3 amount, in situation about stirring, add tetrahydrofuran (THF) by proportioning, stir, at the uniform velocity add propylene glycol by proportioning, continue to stir 5-10 minute, at the uniform velocity add alkylphenol polyoxyethylene by proportioning, continue to stir 5-10 minute, at the uniform velocity add thanomin by proportioning, stir 5-10 minute; Under stirring, continue to add N methyldiethanol amine, moisturizing, to aequum, is stirred packed for standby use 1 hour.
The present invention also provides the using method of described environment-friendly type weakly alkaline low temperature deburring bating liquor, first described environment-friendly type weakly alkaline low temperature deburring bating liquor is added in stainless steel tank, be warming up to 50-80 ℃, pending components and parts are dropped into and soak 20-60 minute, then take out and gently scrub clean or high pressure water jets drip washing only with brush.
Beneficial effect: environment-friendly type weakly alkaline low temperature deburring bating liquor of the present invention adopts tetrahydrofuran (THF) and propylene glycol to make solvent, and add distinctive Surfactants mixed system, when zinc-plated pre-treatment deburring, only pending components and parts need to be put into softening tank, 50-80 ℃ of digestion 20-60 minute, can make components and parts surface burr softening, follow-uply rinse well or high pressure water jets drip washing can enter subsequent handling only by the light brush of brush, after this environment-friendly type weakly alkaline low temperature deburring bating liquor soaks, product is without entering oil removing operation.It is low that the present invention has bating liquor service temperature, burr bating effect good and can remove substrate surface greasy dirt, without toxic and harmful produce feature; The materials safety adopting and environmental protection, formula material meets that environmental requirement, product are stable completely, waste liquid acid adding is adjusted pH value 7-8 left and right in use procedure, can enter waste liquid pool.Use temperature is low, and technique is very simple, and follow-up maintenance cost is very low, is particularly suitable for energy-efficient requirement.
Embodiment
Below in conjunction with embodiment, the present invention is further illustrated.
Embodiment 1: preparation environment-friendly type weakly alkaline low temperature deburring bating liquor
Carry out each component in following ratio with weight percent proportioning: tetrahydrofuran (THF) 30%, propylene glycol 30%, alkylphenol polyoxyethylene 1%, thanomin 5%, N methyldiethanol amine 5%, surplus is water.
The preparation process of this embodiment is: according to said components content, add the water of 2/3 amount in container; In situation about stirring, add tetrahydrofuran (THF); In situation about stirring, at the uniform velocity add propylene glycol, continue to stir 5-10 minute; In situation about stirring, at the uniform velocity add alkylphenol polyoxyethylene, continue to stir 5-10 minute; In situation about stirring, add thanomin, continue to stir, add N methyldiethanol amine, moisturizing, to aequum, is stirred 1 hour, and plastic tank packages spare.
The using method of this embodiment is: first described environment-friendly type weakly alkaline low temperature deburring bating liquor is added to stainless steel tank, be warming up to 50-80 ℃, then pending components and parts are soaked to 20-60 minute, after taking-up, gently scrub clean or high pressure water spray with brush and totally can enter next procedure.And through the components and parts surface-brightening soaking, without any excessive erosion phenomenon, prove that this environment-friendly type weakly alkaline low temperature deburring bating liquor has good flash bating effect, and good deoiling effect, and to electronic devices and components base material and plastic-sealed body without any corrosion.
Embodiment 2-5
Repeat the method for EXPERIMENTAL EXAMPLE 1 by each component concentration of specifying in following table 1, obtain the environment-friendly type weakly alkaline low temperature deburring bating liquor of different components, experimental result is as shown in table 1.
Table 1 embodiment tests design parameter
| Component (weight percent) | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 |
| Tetrahydrofuran (THF) (%) | ?30 | ?10 | ?35 | ?30 | ?35 |
| Propylene glycol (%) | ?20 | ?35 | ?10 | ?20 | ?30 |
| Alkylphenol polyoxyethylene (%) | ?1 | ?2 | ?5 | ?5 | ?1 |
| Thanomin (%) | ?20 | ?20 | ?10 | ?15 | ?10 |
| N methyldiethanol amine (%) | ?1 | ?2 | ?2 | ?5 | ?5 |
| Water (%) | ?28 | ?31 | ?38 | ?25 | ?19 |
| Softening tank temperature (℃) | ?60 | ?70 | ?70 | ?60 | ?50 |
| Soak time (minute) | ?70 | ?50 | ?50 | ?50 | ?20 |
| Effect | Good | Good | Good | Good | Good |
Can find out from the test result shown in table 1, environment-friendly type weakly alkaline low temperature deburring bating liquor provided by the invention can be at 50-80 ℃, soak 20-60 minute softening components and parts surface and pin place flash, flushing gently brushed by process brush or high pressure water spray rinses and flash can be removed totally, and the components and parts surface after soaking, without greasy dirt, can directly enter next step operation.
In the time using this product, should avoid acidity or basic solution to bring into, after operation, should wash one's hands, working space and storage repository must be ventilated, and should avoid and skin contact, or splash in eyes.In use, add stoste according to analysis, can continue to soak.
Claims (3)
1. an environment-friendly type weakly alkaline low temperature deburring bating liquor, its each component and weight percent are: tetrahydrofuran (THF) 10-35%, propylene glycol 10-35%, alkylphenol polyoxyethylene 1-5%, thanomin 5-20 %, N methyldiethanol amine 1-10%, all the other are water.
2. a preparation method for environment-friendly type weakly alkaline low temperature deburring bating liquor described in claim 1, is characterized in that comprising the following steps: the water that adds 2/3 amount in container;
In situation about stirring, add tetrahydrofuran (THF) by proportioning, stir;
In situation about stirring, at the uniform velocity add propylene glycol by proportioning, continue to stir 5-10 minute;
In situation about stirring, at the uniform velocity add alkylphenol polyoxyethylene by proportioning, after completing, 5-10 minute is stirred in continuation;
In situation about stirring, at the uniform velocity add thanomin by proportioning, continue to stir 5-10 minute;
In situation about stirring, continue to add N methyldiethanol amine;
Moisturizing, to aequum, stirs after completing.
3. the using method of environment-friendly type weakly alkaline low temperature deburring bating liquor described in claim 1, it is characterized in that comprising the following steps: first by described environment-friendly type weakly alkaline low temperature deburring bating liquor, add in stainless steel tank, at 50-80 ℃, pending base material is soaked to 20-70 minute, after taking-up, gently brush with brush that water is rinsed well or high pressure water jets drip washing only.
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| JP6348821B2 (en) * | 2014-10-24 | 2018-06-27 | 化研テック株式会社 | Electrolytic solution composition for removing burrs and method for removing burrs |
| CN106011993B (en) * | 2016-05-16 | 2018-01-05 | 昆山艾森半导体材料有限公司 | Flash solution and preparation method thereof is removed in one kind electrolysis |
| CN110437942A (en) * | 2018-05-04 | 2019-11-12 | 无锡华友微电子有限公司 | A kind of low temperature TAPE gum softening liquid and preparation method thereof |
| CN109352882A (en) * | 2018-10-25 | 2019-02-19 | 南通皋鑫电子股份有限公司 | Remove high-voltage diode pin resin burr technique |
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Address after: Huangpu Road, Qiandeng Town Kunshan city Suzhou City, Jiangsu Province, No. 1647 215000 Patentee after: Jiangsu Essen semiconductor materials Limited by Share Ltd Address before: No. 999, Huangpu River Road, Kunshan City, Suzhou, Jiangsu Patentee before: ASEM (Suzhou) Electronic Material Co., Ltd. |