A scratch-resistant UV-curable light-guiding ink

Abstract

The invention belongs to the technical field of light conducting ink preparation and particularly relates to scratch-resistant UV-cured light conducting ink. The light conducting ink comprises the following components in percentage by mass: 8-18% of light conducting nanopowder, 25-45% of acrylic resin, 30-45% of methylbenzene and butanone mixed solvent, 3-10% of stearic acid, 2-6% of scratch-resistant aid and 2-5% of photoinitiator. The light conducting ink provided by the invention is favorable in silk-screen printing property; after being subjected to UV curing, acrylic resin is favorable in flexibility and good in adhesive force for an acrylic plate; and due to the addition of scratch-resistant aid, the flexibility is kept, meanwhile, the hardness of the ink is improved, and the pencil hardness can be up to 2h.

Description

technical field

[0001] The invention belongs to the technical field of light guide ink preparation, and in particular relates to a scratch-resistant UV curing light guide ink. Background technique

[0002] The light guide plate is an important part of the backlight module in the LCD panel. When using the light guide ink, the ink is printed into reflective points through the screen printing technology. When the light shines on each light guide point, the reflected light will diffuse to all angles , and then destroy the reflection conditions and emit from the front of the light guide plate, thereby converting the point light source into a surface light source, so as to achieve the effect of making the entire light guide plate emit light uniformly.

[0003] Patent application number 201110213082.4 discloses a UV curing light guide ink and a light guide plate using the ink. The light guide ink includes components: cross-linking reaction between polyurethane acrylic resin and po...

Examples

preparation example Construction

[0017] Preparation of UV curable light-guiding ink: Under light-proof conditions, take 25% to 45% of acrylic resin and 3% to 10% of stearic acid into a mixed solvent of 30% to 45% toluene and methyl ethyl ketone, high-speed Stir, the stirring speed is 1500-2000rpm, the stirring time is 10-20 minutes; then add 2%-6% anti-scratch additive, 8%-18% nano-light guide powder, 1%-5% photoinitiator, and continue stirring After 10-20 minutes, the UV-curable light-conducting ink is prepared.

[0018] Wherein, the nano light guide powder is a mixture of two or more nanoparticles with different particle sizes, and the average particle size is less than 80nm.

[0019] Wherein, the nano light guide powder is transparent oxide with high refractive index, including titanium oxide, zirconium oxide, zinc oxide, aluminum oxide, and barium titanate.

[0020] Wherein, the scratch-resistant auxiliary agent includes one or more of beeswax, organic wax, polyethylene micropowder, polytetrafluoroethyle...

Embodiment 1

[0023] Under dark conditions, take 25 grams of acrylic resin and 10 grams of stearic acid and dissolve them in 42 grams of toluene and butanone mixed solvent, stir at high speed, stirring speed 1500, stirring time 10 minutes; then add 2 grams of anti-scratch Auxiliary beeswax, 18 grams of nano-light guide powder titanium oxide and zirconium oxide, 3 grams of photoinitiator dialkoxyacetophenone, and continue to stir for 10 minutes to prepare a UV-curable light guide ink.

Embodiment 2

[0025] Under dark conditions, take 35 grams of acrylic resin and 3 grams of stearic acid and dissolve them in a mixed solvent of 45 grams of toluene and methyl ethyl ketone, stir at a high speed, the stirring speed is 1500, and the stirring time is 15 minutes; then add 6 grams of anti-scratch Auxiliary organic wax, 10 grams of nano light guide powder zirconium oxide and zinc oxide, 1 gram of photoinitiator dichloroacetophenone, and continue stirring for 15 minutes to prepare UV curable light guide ink.

technical field

[0001] The invention belongs to the technical field of light guide ink preparation, and in particular relates to a scratch-resistant UV curing light guide ink. Background technique

[0002] The light guide plate is an important part of the backlight module in the LCD panel. When using the light guide ink, the ink is printed into reflective points through the screen printing technology. When the light shines on each light guide point, the reflected light will diffuse to all angles , and then destroy the reflection conditions and emit from the front of the light guide plate, thereby converting the point light source into a surface light source, so as to achieve the effect of making the entire light guide plate emit light uniformly.

[0003] Patent application number 201110213082.4 discloses a UV curing light guide ink and a light guide plate using the ink. The light guide ink includes components: cross-linking reaction between polyurethane acrylic resin and po...

Examples

preparation example Construction

[0017] Preparation of UV curable light-guiding ink: Under light-proof conditions, take 25% to 45% of acrylic resin and 3% to 10% of stearic acid into a mixed solvent of 30% to 45% toluene and methyl ethyl ketone, high-speed Stir, the stirring speed is 1500-2000rpm, the stirring time is 10-20 minutes; then add 2%-6% anti-scratch additive, 8%-18% nano-light guide powder, 1%-5% photoinitiator, and continue stirring After 10-20 minutes, the UV-curable light-conducting ink is prepared.

[0018] Wherein, the nano light guide powder is a mixture of two or more nanoparticles with different particle sizes, and the average particle size is less than 80nm.

[0019] Wherein, the nano light guide powder is transparent oxide with high refractive index, including titanium oxide, zirconium oxide, zinc oxide, aluminum oxide, and barium titanate.

[0020] Wherein, the scratch-resistant auxiliary agent includes one or more of beeswax, organic wax, polyethylene micropowder, polytetrafluoroethyle...

Embodiment 1

[0023] Under dark conditions, take 25 grams of acrylic resin and 10 grams of stearic acid and dissolve them in 42 grams of toluene and butanone mixed solvent, stir at high speed, stirring speed 1500, stirring time 10 minutes; then add 2 grams of anti-scratch Auxiliary beeswax, 18 grams of nano-light guide powder titanium oxide and zirconium oxide, 3 grams of photoinitiator dialkoxyacetophenone, and continue to stir for 10 minutes to prepare a UV-curable light guide ink.

Embodiment 2

[0025] Under dark conditions, take 35 grams of acrylic resin and 3 grams of stearic acid and dissolve them in a mixed solvent of 45 grams of toluene and methyl ethyl ketone, stir at a high speed, the stirring speed is 1500, and the stirring time is 15 minutes; then add 6 grams of anti-scratch Auxiliary organic wax, 10 grams of nano light guide powder zirconium oxide and zinc oxide, 1 gram of photoinitiator dichloroacetophenone, and continue stirring for 15 minutes to prepare UV curable light guide ink.