Single-component mirror ink and preparation method thereof

Abstract

The invention discloses single-component mirror ink and a preparation method thereof. The mirror ink comprises the following components in percentage by weight: 40-70% of gloss oil and 60-30% of vacuum electroplating aluminum paste. The gloss oil comprises the following components in percentage by weight: 35-45% of matrix resin, 4-6% of amino resin, 6-10% of blocked isocyanate, 0.2-0.8% of a metalcarboxylate catalyst, 3-5% of a silane coupling agent, 1-2% of a leveling agent, 20-30% of DBE and 12-20% of PMA. The preparation method comprises the following steps: adding the solvent, the matrixresin, the amino resin, the silane coupling agent and the leveling agent into a reaction kettle, and performing heating, curing, cooling and filtering to obtain liquid resin; adding a solvent, the liquid resin, the blocked isocyanate and the metal carboxylate catalyst into a dispersing and stirring container, dispersing at a high speed, and standing to obtain gloss oil; and adding the vacuum electroplating aluminum paste into the gloss oil, and performing dispersing at a low speed and filtering to obtain the single-component mirror ink. The prepared mirror ink has excellent weather resistanceand boiling resistance, and the mirror effect and adhesiveness are not affected after the mirror ink is boiled in boiling water for 1h; and the cost is low, the printing performance is good, and recycling can be achieved.

Description

technical field [0001] The invention relates to the technical field of inks, in particular to a one-component mirror ink and a preparation method thereof. Background technique [0002] Mirror ink is a solvent-based ink with special effects. The ink is printed on the reverse side of a transparent material to obtain a mirror effect on the front side. The main components of mirror ink are mixed resin, additives, organic solvent and vacuum electroplating aluminum silver paste. [0003] However, because metal aluminum is an active metal, it is very easy to be oxidized, and the oxidized aluminum paste is in a state of thickening and blackening. After the particles become thick, it cannot be screen printed with about 300 meshes, and products printed with thicker meshes will be damaged. A large number of trachomas appear, resulting in poor shielding of the coating; at the same time, it also causes the ink to lose its due mirror effect and metallic luster. [0004] In order to avoi...

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Problems solved by technology

[0003] However, because metal aluminum is an active metal, it is very easy to be oxidized, and the oxidized aluminum paste is in a state of thickening and blackening. After the particles become thick, it cannot be screen printed with about 300 meshes, and products printed with thicker meshes will be damaged. There are a lot of trachoma, resulting in poor covering of the coating; at the same time, it also causes the ink to lose its due mirror effect and metallic luster

[0004] In order to avoid the above phenomenon, most manufacturers currently choose to use resins and additives with low acid value to prepare mirror inks, but the weather resistance, moisture resistance, and water boiling resistance of mirror inks prepared by this method are poor, and cannot meet market requirements.

[0005] At the same time, some manufacturers use a two-component method (one main ink, one curing agent) to distinguish the mirror ink. Although this improves the weather resistance, moisture resistance, and water resistance of the mirror ink, but due to the two-component ink in the After adding the curing agent, the use time is about 4-24 hours, it cannot be recycled and used, and the printing adaptability is low, the waste of ink is large, the production cost is high, and it is not friendly to the environment.

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