Solution to incomplete curing of UV fast curing conductive adhesive

UV fast curing conductive adhesiveSolution for incomplete solidification:

UV curable conductive adhesive refers to conductive adhesive that undergoes changes in solubility through exposure or radiation from sources such as ultraviolet light, electron beam, excimer laser beam, X-ray, ion beam, etc. Can be widely used for touch screens CSP、FPC、FPC/ITO glass、PET/ITOglass、PET/PET、 Fast bonding and conductivity in fields such as Flipchip, LCD, TP, RFID, thin-film switches, EL backlight terminals, etc. In recent years, it has also been gradually applied to the production of flat panel displays in the field of optoelectronics. Due to the photochemical sensitivity of UV curable conductive adhesive, it can greatly improve production efficiency; Cost savings; Construction safety: No solvents involved, favorable environment; And it is suitable for large-scale production on automated assembly lines. Uninwell's photosensitive conductive adhesive, FPD photosensitive silver paste, FPD photoresist paste, LCD conductive silver paste, PDP conductive silver paste, touch screen conductive silver paste, TP silver paste have successful cases in LCM modules, PFD (flat panel display), liquid crystal display (LCD), plasma display (PDP), electroluminescent display (ELD), organic electroluminescent display (OLED), field emission display (FED), projection display and other fields. Uninwell International has summarized the reasons and solutions for the incomplete curing of UV curable conductive adhesive based on feedback from customers and their own experience, for the reference of friends who are interested. Reasons and solutions for incomplete solidification

The lamp tube is aging. The flexible version of UV curable conductive adhesive absorbs ultraviolet light with a wavelength of 200-400nm, and generally requires a power greater than 150W/cm to fully cure. Currently, the medium pressure mercury lamp used has an average service life of 1000-1500 hours. As the electrode of the lamp gradually decomposes, deposition occurs on the inner wall of the lamp tube, and the transparency and transmittance of ultraviolet light gradually decrease. Therefore, it is necessary to regularly inspect the lamp tube and replace it in a timely manner.
2. The power of the light source is insufficient. The fast printing speed is also the reason for incomplete curing and surface stickiness of UV cured conductive adhesive. At this time, the printing speed can be reduced or the light source power can be increased.
        3. UV curable conductive adhesiveThe curing speed itself is slow. You can add UV curing accelerators, reduce printing speed, or find UV curing conductive adhesive suppliers to solve the problem.
4. Some manufacturers use ethanol to dilute UV curable conductive adhesive, and excessive ethanol can affect the degree of UV curing, causing incomplete UV curing and surface stickiness. Therefore, ethanol dilution should be avoided as much as possible. If it is necessary to reduce ink viscosity, UV curable conductive adhesive diluent can be used.