White ultraviolet light polymerization resin composition, and preparation method and application method thereof

Abstract

The invention relates to white ultraviolet light polymerization resin composition, and a preparation method and an application method thereof. The composition comprises, by weight, the following raw materials: 100 parts of side chains multi-vinyl epoxy resin, 10-100 parts of vinyl end long chains epoxy resin, 1-30 parts of photopolymerization initiators, 5-100 parts of unsaturability monomer, 5-40 parts of thermoplastic acrylic resin, 35-400 parts of inorganic filling materials and 0.5-10 parts of wetting dispersants. The composition is grinded by a three-roll machine to reach certain fineness for printing. The composition is used for printing characters and patterns of circuit boards. By the aid of the composition, definition and plumpness of the characters are enhanced after the characters are printed, and diffusivity of the characters due to printing repeatedly for a plurality of times is reduced.

Description

technical field [0001] The invention relates to a white ultraviolet light curable resin composition, a preparation method and a use method thereof. The composition is coated on a printed circuit board substrate or a solder resist ink by screen printing, and is cured by ultraviolet light to form a permanent coating, which is used for plug-in or repair identification. Background technique [0002] Text (character) inks are collectively referred to as marking inks, which are printed on printed boards or solder resist inks through the screen printing process for identification or repair of plug-in positions. Like solder resist inks, marking inks are divided into two types: heat-curable and light-curable. [0003] With the development of civilian consumer electronics and military products, printed circuit boards tend to be thin, precise, and highly centralized. During the manufacturing process, inks are required to have finer resolution and recognition rate than before. Curing ...

AI Technical Summary

Problems solved by technology

[0006] 1. The solid content increases, the fluidity is poor, and the screen plate is easy to be blocked, and characters are broken after multiple printings;

[0007] 2. High solid content, low ink cross-linking degree, scratches and characters falling off during the forming process of printed circuit boards;

[0008] 3. The thixotropy of the ink is enhanced, the fullness of the characters after printing is low, the three-dimensional effect is poor, and the edge of the line is prone to jagged phenomenon

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