Green alkaline paint remover for eliminating coating from electronic circuit board and its prepn and usage
A technology for electronic circuit boards and paint strippers, used in chemical paint/ink removers, coatings, etc., can solve the problems of substrate corrosion, long paint stripping time, etc., to achieve less consumption of raw materials, high paint stripping efficiency, paint fast effect
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[0021] First remove the electronic components on the electronic circuit board through appropriate means, and then cut the circuit board into small pieces of about 2cm×2cm. The obtained small pieces are placed in the paint remover prepared by the present invention and soaked at 70-95°C. See Table 1 and Table 2 for the composition and temperature conditions of specific paint remover examples.
[0022]
[0023]
[0024] The experimental results show that: within 15 to 60 minutes, the surface paint film peels off completely, while the metal copper wire is clean and bright without corrosion, which provides great convenience for the next step of metal recovery. At the same time, the brightness of the solder at the socket is the same as before the paint is removed, which shows that the paint remover has basically no corrosion to the solder. During the process of paint removal, no peculiar smell is generated, no volatilization, safe to use, environmentally friendly...
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