Photocurable and thermosetting resin composition, solder resist dry film prepared therefrom, and circuit board comprising said solder resist dry film
A resin composition, thermosetting technology, applied in photosensitive materials for optomechanical equipment, optomechanical equipment, optics, etc., can solve the problems of inability to fully display thermal radiation performance, difficult to adhere to electronic components, etc., and achieve excellent photocuring performance, improved heat radiation performance, reduced dimensional stability, and minimized distortion
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[0172] Embodiment and comparative example: the preparation of resin composition, dry film and printed circuit board
Embodiment 1 and 2 and comparative Embodiment 1
[0174] A resin composition was prepared by mixing the components shown in Table 1 below. In this paper, a mixture of epoxy (meth)acrylate compounds derived from cresol novolac and epoxy (meth)acrylate compounds derived from bisphenol F in a weight ratio of 3:1 was used as the acid-modified low Polymer.
[0175] The resin composition prepared as above was applied on PET as a carrier film, and it was dried by an oven at 75° C., and then PE was laminated as a release film, thereby preparing a carrier film, a photosensitive film (thickness: 20μm) and a dry film composed of a release film.
[0176] After peeling off the cover film of the prepared dry film, the photosensitive film layer is vacuum laminated on the circuit-forming substrate, and a light shield corresponding to the circuit pattern is placed on the photosensitive film layer and exposed to ultraviolet light. Using ultraviolet light with a wavelength of 365nm at 350mJ / cm 2 exposure at the exposure level.
[0177] Ther...
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