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CN-121975372-A - Optical ink, preparation method and application thereof

CN121975372ACN 121975372 ACN121975372 ACN 121975372ACN-121975372-A

Abstract

The application discloses an optical ink which comprises, by mass, 100 parts (10-35 parts) of an optical ink main agent (0.3-0.5 parts) of an optical ink main agent (0-30 parts), a curing agent, a boiling-resistant agent and a solvent, wherein the optical ink main agent comprises, by weight, 18-25 parts of cerium-doped yttrium aluminum garnet, 40-50 parts of resin, 2-4 parts of silicon dioxide and 10-12 parts of filler. The cerium-doped yttrium aluminum garnet is added into the printing ink, so that the printing ink can play a role in dynamic dimming, is matched with other materials, and has an excellent blue light eliminating effect.

Inventors

  • WANG ZHIQIANG

Assignees

  • 东莞市神彩科技有限公司

Dates

Publication Date
20260505
Application Date
20251229

Claims (10)

  1. 1. The optical ink is characterized by comprising an optical ink main agent, a curing agent, a boiling-resistant agent and a solvent, wherein the mass ratio of the main agent to the curing agent is 100 (10-35) (0.3-0.5) (0-30); The optical ink main agent comprises, by weight, 18-25 parts of cerium-doped yttrium aluminum garnet, 40-50 parts of resin, 2-4 parts of silicon dioxide and 10-12 parts of filler; The resin comprises at least one of polyester resin, vinyl ester resin, epoxy resin, polyurethane resin, nitrate resin and acrylic resin; the curing agent comprises an isocyanate curing agent and/or an amine curing agent.
  2. 2. The optical ink of claim 1, wherein one or more of the following conditions are met: (1) The solvent includes at least one of an alcohol solvent, a ketone solvent, a lipid solvent, an aliphatic hydrocarbon solvent, and an aromatic hydrocarbon solvent; (2) The amine curing agent comprises at least one of fatty amine, polyamide and aromatic amine; (3) The isocyanate curing agent comprises at least one of HDI trimer, IPDI trimer and TDI adduct; (4) The polyester resin comprises at least one of ortho-benzene type polyester resin, bisphenol A type polyester resin, bisphenol F type resin, meta-benzene type polyester resin and para-benzene type polyester resin; (5) The epoxy resin comprises phenolic epoxy resin and/or alicyclic epoxy resin; (6) The nitrate resin is nitrocotton resin.
  3. 3. The optical ink according to claim 1, wherein the resin is a combination of a polyester resin and a vinyl ester resin, and the mass ratio of the polyester resin to the vinyl ester resin is (1.5-2.5): 1.
  4. 4. The optical ink according to claim 1, wherein the curing agent is an isocyanate curing agent, wherein the isocyanate curing agent comprises polyether modified HDI trimer and IPDI trimer, and the mass ratio of the polyether modified HDI trimer to the IPDI trimer is (6-8): 2-4.
  5. 5. The optical ink of claim 1, wherein the boiling-resistant agent is a combination of methanol, ethanol and a silane coupling agent, wherein the mass ratio of the methanol, the ethanol and the silane coupling agent is (1-3): (11-15): (80-90).
  6. 6. The optical ink according to claim 1, wherein the filler is talc, and the graphite further comprises 0.1 to 0.5 part of silicone, 0.5 to 2 parts of a hardening accelerator, and 0.2 to 0.5 parts of a dispersing agent.
  7. 7. A method of producing the optical ink according to any one of claims 1 to 6, comprising the steps of: Stirring and mixing the cerium-doped yttrium aluminum garnet, resin, silicon dioxide, filler, solvent and boiling resistant agent for 1.5-3 hours under the condition of 1200-2000 rpm, and grinding to obtain a mixture; and stirring and mixing the mixture and the curing agent for 15-30 min at the rotating speed of 100-200 rpm to obtain the optical ink.
  8. 8. An optical member on which the optical ink according to any one of claims 1 to 6 is silk-screened.
  9. 9. The optical component of claim 8, wherein the optical component comprises at least one of a diffuser plate, a reflective film, a brightness enhancement film, a structural diffuser film, a lamp panel, and a glue-iron frame wall.
  10. 10. The optical member of claim 8 wherein said screen printing has a dot size of 0.05 to 1MM, a dot density of 1 to 50dpi and a concentration of said optical ink of 1 to 100wt%.

Description

Optical ink, preparation method and application thereof Technical Field The application relates to the field of ink, in particular to optical ink, a preparation method and application thereof. Background Along with the rapid development of the fields of lcd, led, miniled, oled display screens, special functional materials such as backlight modules and the like, the performance requirements of the market on the printing ink are iterated from the traditional color presentation, the adhesive force reaching the standard, the directions of multifunctional integration, high-performance upgrading, environment-friendly adaptation and the like. Conventional optically variable inks (OVI/MI) rely on the principle of thin film interference, where the pigments are tiny, multi-layer optical thin film fragments of a specific thickness (e.g., five-layer structure: absorber-reflector-spacer-reflector-absorber). When white light irradiates on the fragments, interference occurs at the interfaces of all layers, only light with specific wavelength is coherently enhanced under specific angles, and light with other wavelengths is coherently counteracted. Thus, the viewer sees different colors from different angles. This is a physical phenomenon that cannot be reproduced by copying or scanning. Disclosure of Invention In order to overcome at least one of the defects in the prior art, the application provides an optical ink, a preparation method and application thereof. The invention adopts the technical scheme that: on one hand, the invention provides optical ink, which comprises an optical ink main agent, a curing agent, a boiling-resistant agent and a solvent, wherein the mass ratio of the main agent to the curing agent is 100 (10-35) (0.3-0.5) (0-30); The main agent of the optical ink comprises, by weight, 18-25 parts of cerium-doped yttrium aluminum garnet, 40-50 parts of resin, 2-4 parts of silicon dioxide and 10-12 parts of filler; The resin comprises at least one of polyester resin, vinyl ester resin, epoxy resin, polyurethane resin, nitrate resin and acrylic resin; the curing agent comprises an isocyanate curing agent and/or an amine curing agent. Preferably, the optical ink satisfies one or more of the following conditions: (1) The solvent includes at least one of an alcohol solvent, a ketone solvent, a lipid solvent, an aliphatic hydrocarbon solvent, and an aromatic hydrocarbon solvent; (2) The amine curing agent comprises at least one of fatty amine, polyamide and aromatic amine; (3) The isocyanate curing agent comprises at least one of HDI trimer, IPDPI trimer and TDI adduct; (4) The polyester resin comprises at least one of ortho-benzene type polyester resin, bisphenol A type polyester resin, bisphenol F type resin, meta-benzene type polyester resin and para-benzene type polyester resin; (5) The epoxy resin comprises phenolic epoxy resin and/or alicyclic epoxy resin; (6) The nitrate resin is nitrocotton resin. Preferably, the resin is a combination of polyester resin and vinyl ester resin, and the mass ratio of the polyester resin to the vinyl ester resin is (1.5-2.5): 1. The polyester resin and the vinyl ester resin can be well compatible with the cerium-doped yttrium aluminum garnet, and the cerium-doped yttrium aluminum garnet can be stably dispersed in the combined resin of the polyester resin and the vinyl ester resin and is regularly arranged, so that the optical ink realizes a more stable dimming effect, the blue light eliminating effect is better, and the formed optical ink has good adhesive force and weather resistance. More preferably, the polyester resin is an m-benzene type polyester resin and/or a p-benzene type polyester resin, and the vinyl ester resin is a bisphenol A type vinyl ester resin. Preferably, the curing agent is an isocyanate curing agent, wherein the isocyanate curing agent comprises polyether modified HDI trimer and IPDI trimer, and the mass ratio of the polyether modified HDI trimer to the IPDI trimer is (6-8) (2-4). The polyether modified HDI trimer not only has excellent flexibility and substrate adhesion, but also can promote system compatibility, assist in improving dispersion uniformity of cerium-doped yttrium aluminum garnet, avoid blue light elimination efficiency deviation caused by powder agglomeration, further inhibit migration loss of cerium-doped yttrium aluminum garnet, ensure long-acting property of blue light elimination effect, and ensure excellent adhesion performance of optical ink due to combination of the two, and a cured paint film is resistant to high and low temperature circulation and has no delamination. Preferably, the boiling-resistant agent is a combination of methanol, ethanol and a silane coupling agent, wherein the mass ratio of the methanol to the ethanol to the silane coupling agent is (1-3): (11-15): (80-90). The methanol and the ethanol can realize the uniform dispersion of the silane coupling agent, so that the compactness of the ink coating and the adh