CN112175748A - PCBA water-based cleaning agent and preparation method and application thereof - Google Patents
PCBA water-based cleaning agent and preparation method and application thereof Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/825—Mixtures of compounds all of which are non-ionic
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2003—Alcohols; Phenols
- C11D3/2065—Polyhydric alcohols
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/20—Organic compounds containing oxygen
- C11D3/2068—Ethers
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/34—Organic compounds containing sulfur
- C11D3/349—Organic compounds containing sulfur additionally containing nitrogen atoms, e.g. nitro, nitroso, amino, imino, nitrilo, nitrile groups containing compounds or their derivatives or thio urea
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/3707—Polyethers, e.g. polyalkyleneoxides
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/37—Polymers
- C11D3/3703—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
- C11D3/373—Macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds containing silicones
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K3/00—Apparatus or processes for manufacturing printed circuits
- H05K3/22—Secondary treatment of printed circuits
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/008—Polymeric surface-active agents
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K2203/00—Indexing scheme relating to apparatus or processes for manufacturing printed circuits covered by H05K3/00
- H05K2203/07—Treatments involving liquids, e.g. plating, rinsing
- H05K2203/0756—Uses of liquids, e.g. rinsing, coating, dissolving
- H05K2203/0773—Dissolving the filler without dissolving the matrix material; Dissolving the matrix material without dissolving the filler
Abstract
The invention discloses a PCBA water-based cleaning agent and a preparation method and application thereof. The PCBA water-based cleaning agent comprises the following components in percentage by weight: 22% -50%; propylene glycol ethers: 35% -39%; polyol: 10% -12%; corrosion inhibitor: 0.5 to 1 percent; wetting agent: 1% -1.2%; penetrant: 1% -3%; dispersing agent: 2% -3%; defoaming agent: 0.5 to 1 percent. The invention has good dissolving effect of the ethylene glycol ether and the propylene glycol ether in the cleaning agent on the rosin, and the polyhydric alcohol can form a cluster structure with water, thereby reducing the polarity of the cleaning agent system, enhancing the cleaning capability, and simultaneously the wetting agent and the penetrating agent can greatly reduce the surface tension of the cleaning agent, so that the cleaning agent can rapidly enter the fine-pitch component welding part of the PCBA, thereby cleaning the rosin.
Description
Technical Field
The invention relates to the field of water-based cleaning, in particular to a PCBA water-based cleaning agent, a preparation method thereof and application thereof in cleaning PCBA boards.
Background
In the field of electronic assembly, the integrated circuit is simple and complex, the PCBA board is smaller and smaller, and the layout of components is more and more compact. The thinning of the product spacing and the improvement of the product cleanliness also correspondingly improve the requirement on cleaning after welding.
The invention discloses an electronic water-based cleaning agent with the application number of 201310110098.1 and the invention name of 'an electronic water-based cleaning agent' and a preparation method thereof, 20-50% of glycol ethers, 25-40% of propylene glycol ether, 15-25% of alcamines, 0-0.5% of corrosion inhibitor and 10-15% of surfactant. The disadvantages are that: the product has large foam and cannot be suitable for high-pressure spraying.
The application number is 201611077803.2, the invention name is 'an electronic water-based cleaning agent composition', and the material proportion is disclosed as follows: 3.0-10.0% of sodium tripolyphosphate, 1.0-10.0% of anhydrous sodium metasilicate, 0.1-4.5% of surfactant, 0.1-0.5% of water-based wetting agent, 0.01-0.3% of corrosion inhibitor, 0.01-0.5% of water-based defoaming agent, 0.0-30.0% of deionized water and the balance of direct drinking water, wherein the sum of the weight of the components is 100%. The disadvantages are that: the product of the invention has over-high inorganic salt content and over-high conductivity, is easy to cause ion residue, and is not suitable for cleaning electronic products.
Disclosure of Invention
One of the purposes of the invention is to solve the defects in the prior art and provide a PCBA water-based cleaning agent.
The invention also aims to provide a preparation method of the PCBA water-based cleaning agent.
The invention also aims to provide the PCBA water-based cleaning agent for cleaning the PCBA.
The technical scheme of the invention is as follows:
a PCBA water-based cleaning agent: comprises the following components in percentage by weight:
glycol ethers: 22% -50%;
propylene glycol ethers: 35% -39%;
polyol: 10% -12%;
corrosion inhibitor: 0.5 to 1 percent;
wetting agent: 1% -1.2%;
penetrant: 1% -3%;
dispersing agent: 2% -3%;
defoaming agent: 0.5 to 1 percent.
The glycol ethers are selected from one or more of diethylene glycol butyl ether, ethylene glycol tert-butyl ether and ethylene glycol phenyl ether.
The propylene glycol ethers are selected from one or more of dipropylene glycol methyl ether, propylene glycol butyl ether and dipropylene glycol butyl ether.
The polyhydric alcohol is one or more selected from glycerol, ethylene glycol and polyethylene glycol.
The corrosion inhibitor is selected from one or more of urotropin, thiourea, triethanolamine and polyaspartic acid, and thiourea is preferred.
The wetting agent is one or more selected from TMN-6, Clay BG-10 and Clay X-114, preferably Clay X-114.
The penetrating agent is selected from one or more of TMN-5, JFC and TMN-10, preferably Dow TMN-5.
The dispersant is selected from one or more of Dow 15-S-12, Dow 15-S-15 and Dow X-102, preferably Dow X-102.
One or more of the antifoaming agents DOWFAX DF103, FOAMEX810 and FOAMEX3062, preferably FOAMEX 810.
22-50 kg of glycol ethers, 35-39 kg of propylene glycol ethers, 10-12 kg of polyhydric alcohol, 0.5-1 kg of corrosion inhibitor, 1-1.2 kg of wetting agent, 1-3 kg of penetrating agent, 2-3 kg of dispersing agent and 0.5-1 kg of defoaming agent are placed into a dispersing mixer, the mixing is started and uniformly carried out, the mixing rotating speed is 500-800 r/min, the mixing time is 10-20 min, and finally a single homogeneous solution is prepared.
The application of the PCBA water-based cleaning agent comprises the following steps:
s1: preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
s2: cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 5-10 min, and the temperature is 45-60 ℃; the cleaning medium is a cleaning agent, the time is 5-10 min, and the temperature is 45-60 ℃; the medium for jet flow is deionized water, the time is 5-10 min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 5-10 min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 5-10 min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 5-10 min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
The invention has the beneficial effects that: because glycol ethers and propylene glycol ethers in the cleaning agent have good dissolving effect on rosin, polyhydric alcohol can form a cluster structure with water, so that the polarity of a cleaning agent system is reduced, the cleaning capacity is enhanced, meanwhile, the wetting agent and the penetrating agent can greatly reduce the surface tension of the cleaning agent, and the cleaning agent can quickly enter the fine-pitch component welding part of the PCBA, so that the rosin is cleaned.
Detailed Description
In order to better illustrate the present invention, further description will be given with reference to examples.
Table 1: component weight ratio table of each example
Note that O represents that the rosin is completely cleaned without residue
Delta represents a small amount of residual rosin
X represents a larger amount of residue of rosin
Example 1
Preparation of PCBA water-based cleaning agent: putting 44.5kg of diethylene glycol monobutyl ether, 36kg of dipropylene glycol methyl ether, 12kg of glycerol, 0.8kg of thiourea, 1.2kg of Dow X-114, 2kg of Dow TMN-5, 3kg of Dow X-102 and 0.5kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 600r/min, and the stirring time is 15min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 45 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 45 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, the loose fragrance is completely cleaned and has no residue.
Example 2
Preparation of PCBA water-based cleaning agent: putting 44.5kg of ethylene glycol tert-butyl ether, 36kg of dipropylene glycol methyl ether, 12kg of glycerol, 0.8kg of thiourea, 1.2kg of Dow X-114, 2kg of Dow TMN-5, 3kg of Dow X-102 and 0.5kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 600r/min, the stirring time is 15min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 5min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 5min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 5min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 5min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 5min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, the loose fragrance is completely cleaned and has no residue.
Example 3
Preparation of PCBA water-based cleaning agent: putting 42kg of ethylene glycol phenyl ether, 39kg of dipropylene glycol methyl ether, 10kg of glycerol, 1kg of thiourea, 1.5kg of Dow X-114, 3kg of Dow TMN-5, 2.5kg of Dow X-102 and 1kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 800r/min, the stirring time is 10min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, a small amount of rosin is left.
Example 4
Preparation of PCBA water-based cleaning agent: putting 28kg of diethylene glycol monobutyl ether, 22kg of ethylene glycol phenyl ether, 35kg of dipropylene glycol methyl ether, 10kg of glycerol, 0.5kg of thiourea, 1kg of Dow X-114, 1kg of Dow TMN-5, 2kg of Dow X-102 and 0.5kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 500r/min, and the stirring time is 20min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, the loose fragrance is completely cleaned and has no residue.
Example 5
Preparation of PCBA water-based cleaning agent: putting 28kg of diethylene glycol butyl ether, 22kg of ethylene glycol tert-butyl ether, 35kg of dipropylene glycol methyl ether, 10kg of glycerol, 0.5kg of thiourea, 1kg of Dow X-114, 1kg of Dow TMN-5, 2kg of Dow X-102 and 0.5kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 600r/min, the stirring time is 15min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, the loose fragrance is completely cleaned and has no residue.
Example 6
Preparation of PCBA water-based cleaning agent: adding 22kg of ethylene glycol phenyl ether, 35kg of propylene glycol butyl ether, 10kg of ethylene glycol, 0.5kg of thiourea, 1kg of Dow X-114, 1kg of Dow TMN-5, 2kg of Dow X-102 and 0.5kg of FOAMEX810 into 28kg of ethylene glycol tert-butyl ether, putting the mixture into a dispersion mixer, starting the mixer to mix uniformly, wherein the stirring speed is 600r/min, the stirring time is 15min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, a small amount of rosin is left.
Example 7
Preparation of PCBA water-based cleaning agent: putting 44.5kg of diethylene glycol butyl ether, 36kg of propylene glycol butyl ether, 12kg of ethylene glycol, 0.8kg of thiourea, 1.2kg of Dow X-114, 2kg of Dow TMN-5, 3kg of Dow X-102 and 0.5kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 600r/min, the stirring time is 15min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, the loose fragrance is completely cleaned and has no residue.
Example 8
Preparation of PCBA water-based cleaning agent: putting 44.5kg of diethylene glycol butyl ether, 38kg of dipropylene glycol butyl ether, 10kg of polyethylene glycol, 0.8kg of thiourea, 1.2kg of Dow X-114, 2kg of Dow TMN-5, 3kg of Dow X-102 and 0.5kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 600r/min, the stirring time is 15min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, the loose fragrance is completely cleaned and has no residue.
Example 9
Preparation of PCBA water-based cleaning agent: putting 44.5kg of ethylene glycol tert-butyl ether, 38kg of propylene glycol butyl ether, 10kg of ethylene glycol, 0.8kg of thiourea, 1.2kg of Dow X-114, 2kg of Dow TMN-5, 3kg of Dow X-102 and 0.5kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 600r/min, the stirring time is 15min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, the loose fragrance is completely cleaned and has no residue.
Example 10
Preparation of PCBA water-based cleaning agent: putting 44.5kg of ethylene glycol tert-butyl ether, 38kg of dipropylene glycol butyl ether, 10kg of polyethylene glycol, 0.8kg of thiourea, 1.2kg of Dow X-114, 2kg of Dow TMN-5, 3kg of Dow X-102 and 0.5kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 600r/min, the stirring time is 15min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, the loose fragrance is completely cleaned and has no residue.
Example 11
Preparation of PCBA water-based cleaning agent: putting 44.5kg of ethylene glycol phenyl ether, 38kg of dipropylene glycol butyl ether, 10kg of polyethylene glycol, 0.8kg of thiourea, 1.2kg of Dow X-114, 2kg of Dow TMN-5, 3kg of Dow X-102 and 0.5kg of FOAMEX810 into a dispersion mixer, starting and uniformly mixing, wherein the stirring speed is 600r/min, and the stirring time is 15min, and finally preparing a single homogeneous solution;
preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the cleaning medium is a cleaning agent, the time is 10min, and the temperature is 60 ℃; the jet flow medium is deionized water, the time is 10min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 10min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 10min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
After the PCBA board is cleaned through the process, a large amount of residues are left.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, so any modifications, equivalents or improvements made within the spirit and principles of the present invention should be included in the scope of the present invention.
Claims (10)
1. A PCBA water-based cleaning agent: the method is characterized in that: comprises the following components in percentage by weight:
glycol ethers: 22% -50%;
propylene glycol ethers: 35% -39%;
polyol: 10% -12%;
corrosion inhibitor: 0.5 to 1 percent;
wetting agent: 1% -1.2%;
penetrant: 1% -3%;
dispersing agent: 2% -3%;
defoaming agent: 0.5 to 1 percent.
2. The PCBA water-based cleaner as recited in claim 1, wherein: the glycol ethers are selected from one or more of diethylene glycol butyl ether, ethylene glycol tert-butyl ether and ethylene glycol phenyl ether.
3. The PCBA water-based cleaner as recited in claim 1, wherein: the propylene glycol ethers are selected from one or more of dipropylene glycol methyl ether, propylene glycol butyl ether and dipropylene glycol butyl ether.
4. The PCBA water-based cleaner as recited in claim 1, wherein: the polyalcohol is one or more selected from glycerol, ethylene glycol and polyethylene glycol.
5. The PCBA water-based cleaner as recited in claim 1, wherein: the corrosion inhibitor is selected from one or more of urotropin, thiourea, triethanolamine and polyaspartic acid, and thiourea is preferred.
6. The PCBA water-based cleaner as recited in claim 1, wherein: the wetting agent is selected from one or more of TMN-6, Tourette BG-10 and Tourette X-114, preferably Tourette X-114.
7. The PCBA water-based cleaner as recited in claim 1, wherein: the penetrating agent is selected from one or more of TMN-5, JFC and TMN-10, preferably Dow TMN-5.
8. The PCBA water-based cleaner as recited in claim 1, wherein: the dispersant is selected from one or more of Dow 15-S-12, Dow 15-S-15 and Dow X-102, preferably Dow X-102; one or more of the antifoaming agents DOWFAX DF103, FOAMEX810 and FOAMEX3062, preferably FOAMEX 810.
9. A preparation method of PCBA water-based cleaning agent is characterized by comprising the following steps: putting 22-50 kg of glycol ethers, 35-39 kg of propylene glycol ethers, 10-12 kg of polyhydric alcohols, 0.5-1 kg of corrosion inhibitors, 1-1.2 kg of wetting agents, 1-3 kg of penetrating agents, 2-3 kg of dispersing agents and 0.5-1 kg of defoaming agents into a dispersion mixer, starting and mixing uniformly, wherein the stirring speed is 500-800 r/min, and the stirring time is 10-20 min, and finally preparing a single homogeneous solution.
10. The application of the PCBA water-based cleaning agent is characterized in that: the method comprises the following steps:
s1: preparation of a cleaning agent working solution: pouring the stock solution of the prepared cleaning agent into a reservoir of cleaning equipment, and mixing the stock solution with deionized water according to a volume ratio of 1: 3, preparing working solution with the mass concentration of 25%, and uniformly mixing the cleaning agent;
s2: cleaning operation: the method comprises the steps of pre-cleaning, jetting, rinsing again, rinsing for the third time and drying; the pre-cleaning medium is a cleaning agent, the time is 5-10 min, and the temperature is 45-60 ℃; the cleaning medium is a cleaning agent, the time is 5-10 min, and the temperature is 45-60 ℃; the medium for jet flow is deionized water, the time is 5-10 min, and the temperature is 25 ℃; the rinsing medium is deionized water, the time is 5-10 min, and the temperature is 25 ℃; the medium for rinsing again is deionized water, the time is 5-10 min, and the temperature is 25 ℃; the medium for the third rinsing is deionized water, the time is 5-10 min, and the temperature is 25 ℃; the drying medium is hot air, the time is 20min, and the temperature is 120 ℃.
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