Water-based cleaning agent for SMT printing screen
A technology for water-based cleaning agent and printing screen, which is applied in the directions of detergent compounding agent, detergent composition, surface active detergent composition, etc., and can solve the problems of low flash point, high safety hazard, toxicity and the like
Inactive Publication Date: 2011-05-04
SHENZHEN UNIBRIGHT TECH
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AI Technical Summary
Problems solved by technology
This type of cleaning agent is low in cost and fast in cleaning and drying, but its disadvantages are: the cleaning performance is not as good as that of chlorofluorocarbons, and it has a low flash point, is flammable and explosive, and some are toxic and volatile, which is harmful to the environment and the health of operators. unfavorable
Therefore, the requirements for the operating environment are high, otherwise there will be greater safety hazards, improper control, and safety accidents will occur from time to time
Method used
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Embodiment 1
[0016] Prepare water-based cleaning agent according to the following process:
[0017] 1. Take the weight of each component according to the formula in Table 1;
[0018] 2. Mix and stir with the agitator for 0.5 hours;
[0019] 3. After uniformity, let it stand for 1 hour;
[0020] 4. Inspection;
[0021] 5. Sealed packaging.
[0022] Except that the formula is different, the water-based cleaning agent formula technology of embodiment 2, 3, 4 and 5 is substantially the same as embodiment 1. The formula is shown in Table 1.
[0023] Table 1
[0024]
[0025] The water-based cleaning agent of the present invention combines the dibasic acid ester solvent with super strong solvency and deionized water with poor compatibility with it into a uniform solution by adding co-solvents and surfactants. The dissolution characteristics of water also reflect the characteristics of no flash point and good safety of water. With ultrasonic or spray equipment, it can be effectively appl...
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The invention provides a water-based cleaner for an SMT printing stencil, which comprises 5 to 35 weight percent of main solvent, 1 to 10 weight percent of cosolvent, 0.05 to 0.5 weight percent of surfactant, and the balance of deionized water, wherein the main solvent is a halogen-free dibasic acid ester solvent, the cosolvent is a halogen-free polylol solvent, and the surfactant is halogen-freenonionic surfactant. The water-based cleaner is a uniform and neutral water-based cleaner formed by compounding the dibasic acid ester solvent with super high solvency and the deionized water which is low in compatibility with the dibasic acid ester solvent under the action of the cosolvent and the surfactant, jointly represents the solvating characteristic of a solution and the flashpoint-free and high-safety characteristics of water, and can be effectively used for cleaning red gum and tin cream on the SMT printing stencil, the tin cream on a misprinted circuit board, and PCBA residues. A cleaning process adopts an ultrasonic or spray mode to give the best play to the effect of the water-based cleaner.
Description
technical field [0001] The invention relates to a water-based cleaning agent for SMT (surface mount technology) printing screens, which is applied to the cleaning of red glue and solder paste on SMT printing screens, the cleaning of solder paste on misprinted circuit boards, and the cleaning of PCBA (printing screens). Circuit board assembly) residue cleaning. The cleaning method can be ultrasonic or spraying. Background technique [0002] At present, in the fields of electronic assembly, mechanical parts, medical equipment and other fields, cleaning agents are still widely used in the production process. In the electronic processing industry, cleaning of SMT printing screens consumes a large amount of cleaning agents every year. SMT printing screen is a necessary tool for printing solder paste or various patch adhesives in the process of electronic product processing, and it must be cleaned when it is used for 8 hours or when changing varieties. Due to the complex composi...
Claims
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IPC IPC(8): C11D1/72C11D3/44C11D3/20
Inventor 王琏郭艳萍
Owner SHENZHEN UNIBRIGHT TECH