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CN-122012006-A - Ultraviolet curing glue with high adhesion performance and preparation method thereof

CN122012006ACN 122012006 ACN122012006 ACN 122012006ACN-122012006-A

Abstract

The invention provides high-adhesion ultraviolet light curing glue and a preparation method thereof, wherein the high-adhesion ultraviolet light curing glue comprises, by mass, 4-90% of an oligomer, 0-40% of a photo-curing monomer, 0.05-10% of a photoinitiator, 0.05-10% of a leveling auxiliary agent, and 30-90% of a titanium oxide nanoparticle dispersion liquid or a zirconium oxide nanoparticle dispersion liquid. The oligomer adopts polyurethane acrylate polymer with the hydroxyl value more than or equal to 50. The glue is added with 4-90% of oligomer by mass, and the oligomer adopts polyurethane acrylate polymer with hydroxyl value more than or equal to 50, so that the polarity of polyurethane material is weakened by a large amount of hydroxyl contained in the oligomer, and the adhesive force of ultraviolet light curing glue to the waveguide substrate adopting polyurethane material can be improved.

Inventors

  • CHEN SUMING
  • CHEN YUE
  • SHEN BIYAO
  • XU JUN
  • MENG XIANGFENG

Assignees

  • 浙江至格科技有限公司

Dates

Publication Date
20260512
Application Date
20260309

Claims (8)

  1. 1. The ultraviolet curing glue with high adhesion performance is characterized by comprising the following components in percentage by mass: 4-30% of oligomer; 0-40% of a photo-curing monomer; 0.05-10% of photoinitiator; 0.05-10% of leveling auxiliary agent; 30-90% of a titanium oxide nanoparticle dispersion or a zirconium oxide nanoparticle dispersion; wherein the oligomer adopts polyurethane acrylic ester polymer, and the hydroxyl value of the polyurethane acrylic ester polymer is more than or equal to 50.
  2. 2. The high adhesion property ultraviolet light curing glue according to claim 1, further comprising the following components in mass percent: 0.05-10% of silane coupling agent; the silane coupling agent adopts a silane coupling agent containing acrylate groups or mercapto groups.
  3. 3. The ultraviolet light curing glue with high adhesion property according to claim 1, wherein the functionality of the polyurethane acrylate polymer is less than or equal to 3.
  4. 4. The uv curable glue with high adhesion according to claim 1, wherein the functionality of the photo-curable monomer is 1.
  5. 5. The ultraviolet light curing glue with high adhesion property according to claim 1, wherein the light curing monomer adopts an acrylic ester monomer or a sulfhydryl monomer.
  6. 6. The uv curable glue with high adhesion according to claim 1, wherein the photoinitiator is a cleavage type photoinitiator or a hydrogen abstraction type photoinitiator.
  7. 7. The method for preparing the ultraviolet curing glue with high adhesion property according to claim 1, comprising the following steps: Weighing the oligomer, the photo-curing monomer, the photoinitiator and the leveling aid according to the mass percentage; And uniformly stirring and mixing the oligomer, the photo-curing monomer, the photoinitiator and the leveling auxiliary agent, and then adding the titanium oxide nanoparticle dispersion liquid or the zirconium oxide nanoparticle dispersion liquid, and uniformly stirring and mixing to obtain the ultraviolet curing glue with high adhesion property.
  8. 8. The method for preparing the ultraviolet curing glue with high adhesion property according to claim 7, further comprising: Weighing 0.05-10% of silane coupling agent according to the mass percentage; and uniformly stirring and mixing the oligomer, the photo-curing monomer, the photo-initiator, the silane coupling agent and the leveling auxiliary agent, and then adding the titanium oxide nanoparticle dispersion liquid or the zirconium oxide nanoparticle dispersion liquid, and uniformly stirring and mixing to obtain the ultraviolet curing glue with high adhesion property.

Description

Ultraviolet curing glue with high adhesion performance and preparation method thereof Technical Field The invention relates to the technical field of AR diffraction optical waveguide preparation, in particular to ultraviolet curing glue with high adhesion performance and a preparation method thereof. Background The preparation method of the existing diffraction optical waveguide generally comprises the following steps: 1. an imprint master having a preset grating structure is prepared. 2. Transferring the grating structure of the imprinting master plate to a soft film substrate through a nano imprinting process to obtain the soft film plate with the inverse structure of the grating structure. The method comprises the steps of uniformly spin-coating imprinting glue on an imprinting master, attaching a soft film substrate to the imprinting master, applying pressure to enable the imprinting glue to be filled into a grating structure of the imprinting master, obtaining a reverse structure of the grating structure on the imprinting glue, and transferring the imprinting glue with the reverse structure of the grating structure onto the soft film substrate by ultraviolet light curing and demolding to obtain the soft film plate with the reverse structure of the grating structure. 3. And transferring the inverse structure of the grating structure on the soft film plate to the waveguide substrate through a nanoimprint process, thereby obtaining the diffraction optical waveguide. Specifically, spin-coating adhesion promoter and product glue (ultraviolet light curing glue) on a waveguide substrate (glass wafer substrate/polyurethane substrate) in sequence, attaching a soft film plate with a grating structure reverse structure to the product glue on the waveguide substrate (glass wafer substrate/polyurethane substrate), applying pressure to fill the product glue into the grating structure reverse structure of the soft film plate, obtaining a grating structure on the product glue, and separating the soft film plate with the grating structure reverse structure from the product glue with the grating structure by ultraviolet light curing and demolding to obtain the waveguide substrate with the grating structure, thereby obtaining the diffraction optical waveguide. As described above, prior to spin coating the product glue on the waveguide substrate, it is necessary to spin coating the adhesion promoter on the waveguide substrate to increase the interfacial adhesion of the product glue on the waveguide substrate. Since the refractive index of the tackifier is not consistent with the refractive index of the waveguide substrate and the product glue, the optical performance of the diffractive optical waveguide is affected. Disclosure of Invention In order to overcome the defects of the prior art, the invention provides ultraviolet curing glue with high adhesion performance and a preparation method thereof. The invention is realized by the following technical scheme: The invention provides ultraviolet curing glue with high adhesion performance, which comprises the following components in percentage by mass: 4-30% of oligomer; 0-40% of a photo-curing monomer; 0.05-10% of photoinitiator; 0.05-10% of leveling auxiliary agent; 30-90% of a titanium oxide nanoparticle dispersion or a zirconium oxide nanoparticle dispersion; wherein the oligomer adopts polyurethane acrylic ester polymer, and the hydroxyl value of the polyurethane acrylic ester polymer is more than or equal to 50. Preferably, the oligomer is 4-25% by mass, more preferably, the oligomer is 4-20% by mass. Preferably, the photo-curable monomer is 5-35% by mass, more preferably, the photo-curable monomer is 10-30% by mass. Preferably, the photoinitiator accounts for 1 to 10 percent of the total mass percent. Preferably, the leveling auxiliary agent accounts for 0.05-5% of the total mass, and more preferably, the leveling auxiliary agent accounts for 0.05-1% of the total mass. Preferably, the titanium oxide nanoparticle dispersion liquid or the zirconium oxide nanoparticle dispersion liquid is 35 to 85% by mass, and more preferably, the titanium oxide nanoparticle dispersion liquid or the zirconium oxide nanoparticle dispersion liquid is 40 to 85% by mass. Polyurethane acrylate polymers having hydroxyl numbers of greater than or equal to 50, such as those available from Kunkan ultra-high molecular materials, inc., U-CURE 93721, functionality 2, hydroxyl number 160. Also available from Guangzhou Ruo chemical materials Co., ltd., product model number is FSP5520, functionality 4, hydroxyl number 70. The product model is G-4793, the hydroxyl value is 50 and the functionality is 2, which are also produced by the chemical engineering Co-Ltd. Blue Ke Lu, available from New Material Co., ltd, product model L1380, hydroxyl number 155, functionality 2 may also be used. Further, the functionality of the polyurethane acrylate polymer is less than or equal to 3. The polyurethane acrylate