CN114989903B - Composition for cleaning solid wax of LED chip - Google Patents

Composition for cleaning solid wax of LED chip Download PDF

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CN114989903B
CN114989903B CN202210757787.0A CN202210757787A CN114989903B CN 114989903 B CN114989903 B CN 114989903B CN 202210757787 A CN202210757787 A CN 202210757787A CN 114989903 B CN114989903 B CN 114989903B
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imidazoline
rosin
solid wax
composition
agent
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CN114989903A (en
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刘小勇
李丛香
房龙翔
叶鑫煌
肖小江
刘文生
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Fujian Youda Environmental Protection Material Co ltd
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    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/825Mixtures of compounds all of which are non-ionic
    • C11D1/8255Mixtures of compounds all of which are non-ionic containing a combination of compounds differently alcoxylised or with differently alkylated chains
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D233/00Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings
    • C07D233/04Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member
    • C07D233/06Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms
    • C07D233/08Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms with alkyl radicals, containing more than four carbon atoms, directly attached to ring carbon atoms
    • C07D233/12Heterocyclic compounds containing 1,3-diazole or hydrogenated 1,3-diazole rings, not condensed with other rings having one double bond between ring members or between a ring member and a non-ring member with only hydrogen atoms or radicals containing only hydrogen and carbon atoms, directly attached to ring carbon atoms with alkyl radicals, containing more than four carbon atoms, directly attached to ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D233/16Radicals substituted by nitrogen atoms
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    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
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    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
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    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/20Organic compounds containing oxygen
    • C11D3/2075Carboxylic acids-salts thereof
    • C11D3/2086Hydroxy carboxylic acids-salts thereof
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    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16Organic compounds
    • C11D3/20Organic compounds containing oxygen
    • C11D3/22Carbohydrates or derivatives thereof
    • C11D3/221Mono, di- or trisaccharides or derivatives thereof
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    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00Other compounding ingredients of detergent compositions covered in group C11D1/00
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    • C11D3/33Amino carboxylic acids
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    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
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    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/667Neutral esters, e.g. sorbitan esters
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    • C11ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11DDETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
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    • C11D1/72Ethers of polyoxyalkylene glycols
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    • C11D1/00Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
    • C11D1/66Non-ionic compounds
    • C11D1/722Ethers of polyoxyalkylene glycols having mixed oxyalkylene groups; Polyalkoxylated fatty alcohols or polyalkoxylated alkylaryl alcohols with mixed oxyalkylele groups
    • C11D2111/22

Abstract

The invention belongs to the technical field of surfactants, and particularly relates to a chemical preparation for the field of LEDs and a composition for cleaning solid wax of an LED chip. Comprises 15-20% of abietyl imidazoline nonionic surfactant, 2.5-3% of penetrating agent, 8-10% of emulsifying agent, 1.5-2% of chelating agent, 8-10% of organic auxiliary agent and the balance of high-purity water. According to the invention, the rosin-based imidazoline nonionic surfactant, the penetrating agent and the emulsifying agent are mixed, so that the solid wax can be rapidly emulsified and dissolved, the metal electrode material is protected, the problem of corrosion of a water-based product on the market to the metal electrode is solved, and the water-based product is easy to clean and has no residue.

Description

Composition for cleaning solid wax of LED chip
Technical Field
The invention belongs to the technical field of surfactants, and particularly relates to a chemical preparation composition for the field of LEDs, which is used for cleaning solid wax of an LED chip.
Background
Before the LED chip packaging test, one surface of the functional area needs to be coated with solid wax, the functional area is fixed on a grinding disc under the pressure, and the exposed surface of the chip is subjected to grinding and polishing operation. After grinding and polishing, the chip is cleaned by a solid wax cleaning agent to recover the functional surface of the chip. The main components of solid waxes currently used in the industry are long chain fatty acids, rosin and denatured rosin derivatives.
The water-based paraffin removal liquid adopted by the solid paraffin cleaning agent on the market has low dissolution rate of solid paraffin, corrodes electrodes on the surface of a chip, can thoroughly clean dirt only by cleaning with subsequent chemical acetone, and has the problems of complex cleaning process, low paraffin dissolution efficiency, electrode corrosion, additional solvent acetone cleaning, increased use cost and the like. Patent CN 105779151A discloses a paraffin removal cleaning liquid, a preparation method and application thereof, and adopts a high-efficiency nonionic surfactant, a low-foam inhibition surfactant, a dispersion stabilizer and a deionized water system to clean solid paraffin. The water-based solid wax cleaning agent has the problems of complex cleaning process, low wax dissolving efficiency, electrode corrosion, extra solvent acetone cleaning, increased use cost and the like. The water-based solid wax cleaning agent adopted by the invention can quickly emulsify and dissolve solid wax by mixing the rosin-based imidazoline nonionic surfactant, the penetrant and the emulsifier, has a protective effect on metal electrode materials, solves the problem of corrosion of water-based products on the market on metal electrodes, and is easy to clean and free of residues.
Disclosure of Invention
The invention mainly solves the technical problem of providing a composition for cleaning the solid wax of an LED chip, which can quickly emulsify and dissolve the solid wax by mixing a rosin-based imidazoline nonionic surfactant, a penetrating agent and an emulsifying agent, has a protective effect on a metal electrode material, solves the problem of corrosion of a water-based product on the market on the metal electrode, and is easy to clean without residues.
In order to solve the problems, the invention is realized by adopting the following technical scheme.
The composition for cleaning the solid wax of the LED chip comprises the following components in percentage by mass as 100 percent: 15-20% of rosin-based imidazoline nonionic surfactant, 2.5-3% of penetrating agent, 8-10% of emulsifying agent, 1.5-2% of chelating agent, 8-10% of organic auxiliary agent and the balance of high-purity water.
The structural formula of the rosin-based imidazoline nonionic surfactant is as follows:
wherein n is an integer between 14 and 18, and m is an integer between 0 and 2.
The preparation method of the rosin-based imidazoline nonionic surfactant comprises the following steps:
1) Synthesis of fatty acid amide 3:
long chain fatty acid 1 (0.02 mol) and xylene (20 mL) were placed in a dry 250mL three neck round bottom flask equipped with a magnetic stirrer, condenser and addition funnel. A solution of polyamine compound 2 (0.02 mol) in xylene (20 mL) was added dropwise to a 250mL three-necked flask and stirred. The mixture was reacted at 140-180℃for 2 hours, cooled to room temperature, and then distilled under reduced pressure to remove xylene. Fatty acid amide 3 was obtained in the following yields: 90%.
Wherein n is an integer between 14 and 18, and m is an integer between 0 and 2.
2) Synthesis of imidazoline 4:
fatty acid amide 3 (0.02 mol) was dissolved in 40mL of xylene and placed in a 250mL three neck round bottom flask equipped with a magnetic stirrer, condenser and addition funnel. The reaction is carried out for 3 hours at 200-240 ℃ at room temperature. The solvent was removed by distillation under reduced pressure. Imidazoline 4 was obtained in 90.2% yield.
Wherein n is an integer between 14 and 18, and m is an integer between 0 and 2.
3) Synthesis of rosin-based imidazoline a:
imidazoline 4 (0.01 mol) was dissolved in 10mL of xylene and placed in a 250mL reaction flask and heated with a magnetic stirrer. Rosin acid 5 (0.01 mol) was dissolved in 10mL of xylene solution and added dropwise to a 250mL reaction flask. The mixture was then heated with stirring to 140-180 ℃ and reacted for 2 hours. The solvent was removed by distillation under reduced pressure, and dried to give rosin-based imidazoline a in a yield of 81.5%.
Wherein n is an integer between 14 and 18, and m is an integer between 0 and 2.
The rosin radical and long-chain fatty hydrocarbon in the rosin radical imidazoline nonionic surfactant are similar to the wax in structure and are compatible, so that various components in the wax can be dissolved; the imidazoline has a special molecular structure, and the hydrophilic group of the imidazoline contains N atoms with lone pair electrons, and is easy to form coordination bonds with metal atoms, so that chemical adsorption is performed to slow down Fuhai, and the hydrophobic branched chain of the imidazoline can form a hydrophobic film on the surface far away from the metal, so that further corrosion of corrosive media is effectively prevented.
The penetrating agent is at least one of JFC, JFC-1, JFC-2, JFC-E, JFC-M, fast T, OEP-70, AEP and low-foam penetrating agent SF.
The emulsifier is at least one of E-1003, E-1006, MOA-5, MOA-7, L64, E1310, E1308, peregal O, NPE-105, NPE-108, tween 20, tween 60 and Tween 80.
The organic auxiliary agent is any one or more of ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol butyl ether, ethylene glycol, propylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether and propylene glycol monobutyl ether.
The chelating agent is any one or more of ethylenediamine tetraacetic acid, disodium ethylenediamine tetraacetic acid, tetrasodium ethylenediamine tetraacetic acid, citric acid, sodium citrate, glucose, sodium gluconate, sodium tripolyphosphate and 18-crown ether-6.
The high-purity water is deionized water, and the resistivity of the high-purity water at 25 ℃ is not lower than 18MΩ & cm.
The preparation method of the composition comprises the following steps: firstly adding an organic auxiliary agent, then adding a rosin-based imidazoline nonionic surfactant, after complete dissolution, adding a penetrating agent and an emulsifying agent, then adding water, forming a uniform system at a stirring speed of 200rpm, and then adding a chelating agent while stirring to finally obtain a uniform, stable, clear and transparent solution.
The invention has the remarkable advantages that:
by adding the rosin-based imidazoline nonionic surfactant, wherein the rosin groups and the long-chain fatty hydrocarbon groups are compatible with the structural similarity of the wax, various compositions in the wax can be dissolved; the imidazoline has a special molecular structure, and the hydrophilic group of the imidazoline contains N atoms with lone pair electrons, and is easy to form coordination bonds with metal atoms, so that chemical adsorption is performed to slow down Fuhai, and the hydrophobic branched chain of the imidazoline can form a hydrophobic film on the surface far away from the metal, so that further corrosion of corrosive media is effectively prevented.
According to the invention, the rosin-based imidazoline nonionic surfactant is mixed with the penetrant and the emulsifier, wherein the penetrant can accelerate the penetration of the system to the solid wax on the surface of the substrate, so that the emulsifier and the rosin-based imidazoline nonionic surfactant can rapidly react with the solid wax to enable the solid wax to be rapidly emulsified and dissolved, and the rosin-based imidazoline nonionic surfactant has a protective effect on a metal electrode material, so that the problem of corrosion of a water-based product on the market to the metal electrode is solved, and meanwhile, the composition has the characteristics of small odor, no pollution to the environment, low foaming, easiness in rinsing and the like.
Detailed Description
A composition for cleaning solid wax of an LED chip, which is characterized in that: the total weight percentage is 100%, and the composition comprises the following components in percentage by mass: 15-20% of rosin-based imidazoline nonionic surfactant, 2.5-3% of penetrating agent, 8-10% of emulsifying agent, 1.5-2% of chelating agent, 8-10% of organic auxiliary agent and the balance of high-purity water.
The rosin-based imidazoline nonionic surfactant is selected from the following structural components:
at least one of the surfactants, wherein n is an integer between 14 and 18, and m is an integer between 0 and 2. The preparation method of the rosin-based imidazoline nonionic surfactant comprises the following steps:
1) Synthesis of fatty acid amide 3:
long chain fatty acid 1 (0.02 mol) and xylene (20 mL) were placed in a dry 250mL three neck round bottom flask equipped with a magnetic stirrer, condenser and addition funnel. A solution of polyamine compound 2 (0.02 mol) in xylene (20 mL) was added dropwise to a 250mL three-necked flask and stirred. The mixture was reacted at 140-180℃for 2 hours, cooled to room temperature, and then distilled under reduced pressure to remove xylene. Fatty acid amide 3 was obtained in the following yields: 90%.
Wherein n is an integer between 14 and 18, and m is an integer between 0 and 2.
2) Synthesis of imidazoline 4:
fatty acid amide 3 (0.02 mol) was dissolved in 40mL of xylene and placed in a 250mL three neck round bottom flask equipped with a magnetic stirrer, condenser and addition funnel. The reaction is carried out for 3 hours at 200-240 ℃ at room temperature. The solvent was removed by distillation under reduced pressure. Imidazoline 4 was obtained in 90.2% yield.
Wherein n is an integer between 14 and 18, and m is an integer between 0 and 2.
3) Synthesis of rosin-based imidazoline a:
imidazoline 4 (0.01 mol) was dissolved in 10mL of xylene and placed in a 250mL reaction flask and heated with a magnetic stirrer. Rosin acid 5 (0.01 mol) was dissolved in 10mL of xylene solution and added dropwise to a 250mL reaction flask. The mixture was then heated with stirring to 140-180 ℃ and reacted for 2 hours. The solvent was removed by distillation under reduced pressure, and dried to give rosin-based imidazoline a in a yield of 81.5%.
Wherein n is an integer between 14 and 18, and m is an integer between 0 and 2.
The rosin-based imidazoline nonionic surfactant used when n=17, m=1, the characterization data for compound a are as follows:
1 H NMR(300MHz,DMSO-d6),δ:0.88(m,9H,CH3),1.13-1.38(m,CH2,26H),1.47-1.91(m,10H,CH2),1.5(m,1H,NH),1.63(m,1H,CH),1.88(m,1H,CH),2.16-2.26(m,6H,CH2),2.64-2.66(m,4H,CH2),3.02(t,1H,CH),3.32-3.48(m,6H,CH2),3.75(t,2H,CH2),5.43-5.47(m,3H,CH),5.97(m,1H,CH),8.01(t,1H,NH).
13 C NMR(125MHz,DMSO-d6),δ:14.1,21.1,21.8,21.9,22.7,22.7,26,27.8,28.7,29.3,29.4,29.5,29.6,29.7,29.9,31.9,32.3,33.7,34.1,34.8,35.0,35.6,39.7,40.0,42.2,46.9,48.5,49.0,51.2,54.1,129.0,130.6,131.0,132.7,142.0,166,174.1.
HRMS calculated C42H73N4O (m+h) + 649.57, found 649.15.
The rosin radical and long-chain fatty hydrocarbon in the rosin radical imidazoline nonionic surfactant are similar to the wax in structure and are compatible, so that various components in the wax can be dissolved; the imidazoline has a special molecular structure, and the hydrophilic group of the imidazoline contains N atoms with lone pair electrons, and is easy to form coordination bonds with metal atoms, so that chemical adsorption is performed to slow down Fuhai, and the hydrophobic branched chain of the imidazoline can form a hydrophobic film on the surface far away from the metal, so that further corrosion of corrosive media is effectively prevented.
The penetrating agent is at least one of JFC, JFC-1, JFC-2, JFC-E, JFC-M, fast T, OEP-70, AEP and low-foam penetrating agent SF.
The emulsifier is at least one of E-1003, E-1006, MOA-5, MOA-7, L64, E1310, E1308, peregal O, NPE-105, NPE-108, tween 20, tween 60 and Tween 80.
The organic auxiliary agent is any one or more of ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol butyl ether, ethylene glycol, propylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether and propylene glycol monobutyl ether.
The chelating agent is any one or more of ethylenediamine tetraacetic acid, disodium ethylenediamine tetraacetic acid, tetrasodium ethylenediamine tetraacetic acid, citric acid, sodium citrate, glucose, sodium gluconate, sodium tripolyphosphate and 18-crown ether-6.
The high-purity water is deionized water, and the resistivity of the high-purity water at 25 ℃ is not lower than 18MΩ & cm.
The preparation method of the composition comprises the following steps: firstly adding an organic auxiliary agent, then adding a rosin-based imidazoline nonionic surfactant, after complete dissolution, adding a penetrating agent and an emulsifying agent, then adding water, forming a uniform system at a stirring speed of 200rpm, and then adding a chelating agent while stirring to finally obtain a uniform, stable, clear and transparent solution.
In order to make the contents of the present invention more easily understood, the technical scheme of the present invention will be further described with reference to the specific embodiments, but the present invention is not limited thereto.
Cleaning agent compositions of different compositions were formulated according to the formulation of table 1.
TABLE 1 Components and amounts of the various cleaning agent compositions
The chips coated with solid wax were immersed in the cleaning agent compositions prepared in comparative examples 1 to 5 of examples 1 to 4, respectively, and the operation time was set at the set operation temperature, and were taken out, rinsed with deionized water, and dried with nitrogen gas. Observation was performed by using an optical microscope and an electron microscope to confirm the cleaning effect. The operating conditions and results are shown in Table 2.
TABLE 2 cleaning effect of different cleaning agent compositions on solid wax on chip
As can be seen from the combination of tables 1-2, the cleaning agent combination of the invention can effectively dissolve solid wax on a chip in a set temperature and time to obtain a solution which is uniformly dissolved, has no corrosion to electrodes, is easy to rinse and has no residue.
In contrast to example 1, comparative example 1 does not contain a rosin-based imidazoline nonionic surfactant, does not dissolve the wax on the chip surface at the operating temperature and time, and has a large amount of solid wax remaining and corroding the electrode.
In comparison with example 1, comparative example 2 contained no penetrant, most of the solid wax was dissolved at the operating temperature and time, and a small amount of the solid wax remained on the chip surface, and no corrosion to the electrode was caused.
In comparison with example 1, comparative example 3 contains no emulsifier, the system is unstable and delaminates, and the solid wax is not completely emulsified and dissolved at the operating temperature and time, and has no corrosion to the electrode.
In contrast to example 1, comparative example 4 contained no chelating agent, the solid wax dissolved at the operating temperature and time, and the electrode was non-corrosive with a small amount of solid wax sticking back to the chip surface.
Compared with example 1, comparative example 5 contains no organic auxiliary agent, the system is unstable, the solid is dissolved at the operating temperature and time, and greasy dirt remains on the chip surface.
As can be seen from the above examples 1 and comparative examples 1 to 5, the interaction of the rosin-based imidazoline nonionic surfactant with the penetrant and the emulsifier can emulsify and dissolve the solid wax on the chip surface, and the electrode is protected, the organic aid helps to clean and stabilize the system, the chelating agent has antistatic and anti-fouling effects, and the components are indispensable.
The above-described embodiments are provided to illustrate the present invention in detail, but are not intended to limit the scope of the present invention. All equivalent modifications and substitutions of the present invention using the description of the present invention are also included in the scope of the present invention.

Claims (8)

1. A composition for cleaning solid wax of an LED chip, which is characterized in that: the components in percentage by mass are: 15-20% of rosin-based imidazoline nonionic surfactant, 2.5-3% of penetrating agent, 8-10% of emulsifying agent, 1.5-2% of chelating agent, 8-10% of organic auxiliary agent and the balance of high-purity water;
the structural formula of the rosin-based imidazoline nonionic surfactant is as follows:
wherein n is an integer between 14 and 18, and m is an integer between 0 and 2.
2. The composition for cleaning solid wax of LED chips as set forth in claim 1, wherein: the preparation method of the rosin-based imidazoline nonionic surfactant comprises the following steps:
1) Synthesis of fatty acid amide 3:
stirring and mixing long-chain fatty acid, dimethylbenzene and polyamine compound, then reacting for 2 hours at 140-180 ℃, cooling to room temperature, and then distilling under reduced pressure to remove dimethylbenzene to obtain fatty acid amide;
2) Synthesis of imidazoline:
dissolving the fatty acid amide obtained in the step (1) in dimethylbenzene, and reacting for 3 hours at 200-240 ℃ to obtain imidazoline;
3) Synthesis of rosin-based imidazolines:
dissolving the imidazoline obtained in the step (2) in xylene, adding rosin acid, stirring and heating the mixture to 140-180 ℃ for reaction for 2 hours, removing the solvent by reduced pressure distillation, and drying to obtain rosin-based imidazoline;
the long chain fatty acid isPolyamine compound is->Fatty acid amide isImidazoline is->Wherein n is an integer between 14 and 18, and m is an integer between 0 and 2; the abietic acid is->
3. The composition for cleaning solid wax of LED chips as set forth in claim 1, wherein: the penetrating agent is at least one of JFC, JFC-1, JFC-2, JFC-E, JFC-M, fast T, OEP-70, AEP and low-foam penetrating agent SF.
4. The composition for cleaning solid wax of LED chips as set forth in claim 1, wherein: the emulsifier is at least one of E-1003, E-1006, MOA-5, MOA-7, L64, E1310, E1308, peregal O, NPE-105, NPE-108, tween 20, tween 60 and Tween 80.
5. The composition for cleaning solid wax of LED chips as set forth in claim 1, wherein: the organic auxiliary agent is any one or more of ethylene glycol methyl ether, ethylene glycol ethyl ether, ethylene glycol butyl ether, ethylene glycol, propylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether and propylene glycol monobutyl ether.
6. The composition for cleaning solid wax of LED chips as set forth in claim 1, wherein: the chelating agent is any one or more of ethylenediamine tetraacetic acid, disodium ethylenediamine tetraacetic acid, tetrasodium ethylenediamine tetraacetic acid, citric acid, sodium citrate, glucose, sodium gluconate, sodium tripolyphosphate and 18-crown ether-6.
7. The composition for cleaning solid wax of LED chips as set forth in claim 1, wherein: the high-purity water is deionized water, and the resistivity of the high-purity water at 25 ℃ is not lower than 18MΩ & cm.
8. The composition for cleaning solid wax of LED chips as set forth in claim 1, wherein: the preparation method of the composition comprises the following steps: firstly adding an organic auxiliary agent, then adding a rosin-based imidazoline nonionic surfactant, after complete dissolution, adding a penetrating agent and an emulsifying agent, then adding high-purity water, forming a uniform system at a stirring speed of 200rpm, and then adding a chelating agent while stirring to finally obtain a uniform, stable, clear and transparent solution.
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