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Dual-curing light guide glue for display screen backlight modules and preparation method of dual-curing light guide glue

A backlight module, dual-curing technology, applied in the direction of adhesives, epoxy resin glue, adhesive types, etc., can solve the problems of high equipment requirements, high mold costs, large equipment investment, etc., to achieve high luminance and uniformity , The production process is short and the effect of reducing packaging costs

Inactive Publication Date: 2017-03-15
NANJING NUOBANG NEW MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, there are three main production methods in the light guide plate: screen printing ink, direct injection molding and laser engraving. Screen printing has the advantages of small equipment investment, wide applicability to plates, high production efficiency, and is suitable for mass production of a single product. However, screen printing has the disadvantages of large input of auxiliary raw materials, complex production process, time-consuming, many quality control links, high defect rate, difficult improvement of luminous efficiency, difficult adjustment of luminous uniformity, easy yellowing, ink easy to fall off and fade. Yellow, serious light decay, not environmentally friendly, corrosion, poisonous, high processing costs and other defects, and the light guide ink can only be printed on the surface of the optical acrylic plate; the direct injection molding method has a large investment in equipment, high mold costs, difficult to master the production process, Unable to produce defects such as large light guide plates; laser engraving has high requirements on equipment, currently only acrylic material, processing speed is slow, it is almost impossible to produce small graphic points or large-scale designs requiring hundreds of thousands of points, let alone glass light guide plate

Method used

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  • Dual-curing light guide glue for display screen backlight modules and preparation method of dual-curing light guide glue

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] This embodiment provides a dual-curing light-guiding adhesive for a display backlight module. The preparation method of the dual-curing light-guiding adhesive includes the following steps:

[0048] (1) Weigh 31 parts of bisphenol A diglycidyl ether and 100 parts of polyether diamine into the reaction kettle, stir at a speed of 195r / min, and keep the system temperature at 78°C for 0.8h to obtain epoxy resin modified sex fatty amine;

[0049] (2) Weigh 1 part of benzoin dimethyl ether, 67 parts of epoxy resin modified fatty amine, 5 parts of GPES type defoamer, 25 parts of nano-silica, 6 parts of fumed silica and join in the reaction kettle, stir The speed is 375r / min, and the system temperature is maintained at 32°C to react for 8 minutes, degas at -0.08MPa for 30 minutes, and filter through a 100-mesh filter to obtain component B;

[0050] (3) Take by weighing 100 parts of pentaerythritol triacrylate, 136 parts of polybutadiene dimethacrylate, 142 parts of aliphatic ur...

Embodiment 2

[0059] This embodiment provides a dual-curing light-guiding adhesive for a display backlight module. The preparation method of the dual-curing light-guiding adhesive includes the following steps:

[0060] (1) Weigh 28 parts of bisphenol F diglycidyl ether epoxy resin and 100 parts of 4,7,10-trioxy-1,13-tridecanediamine and add them to the reaction kettle at a stirring speed of 160r / min , keep the system temperature at 90°C and react for 0.5h to obtain epoxy resin-modified aliphatic amine;

[0061] (2) Weigh 1 part of 2-hydroxyl-2-methyl-1-phenylacetone, 46 parts of epoxy resin modified fatty amine, 2 parts of lauryl phenylacetate, 42 parts of polymethyl methacrylate micropowder, Add 3 parts of hydrogenated castor oil into the reaction kettle, stir at 350r / min, keep the system temperature at 25°C for 5 minutes, degas at -0.08MPa for 30 minutes, and filter through a 100-mesh filter to obtain component B;

[0062] (3) Take by weighing 100 parts of propoxylated glycerin triacryla...

Embodiment 3

[0071] This embodiment provides a dual-curing light-guiding adhesive for a display backlight module. The preparation method of the dual-curing light-guiding adhesive includes the following steps:

[0072] (1) Weigh 24 parts of polybutadiene epoxy resin and 100 parts of isophorone diamine into the reaction kettle, stir at 230r / min, keep the system temperature at 60°C for 2 hours to obtain epoxy resin Modified fatty amine;

[0073] (2) Weigh 1 part of 1-hydroxycyclohexyl phenyl ketone, 74 parts of epoxy resin modified fatty amine, 7 parts of GPES type defoamer, 21 parts of nano silicon dioxide, 8 parts of polyethylene wax and add to the reaction In the kettle, the stirring speed is 400r / min, and the reaction is maintained at a system temperature of 28°C for 12 minutes, degassing at -0.08MPa for 30 minutes, and filtered through a 100-mesh filter to obtain component B;

[0074] (3) Take by weighing 100 parts of pentaerythritol tetraacrylate, 154 parts of polybutadiene dimethacryl...

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Abstract

The invention discloses dual-curing light guide glue for display screen backlight modules. The dual-curing light guide glue comprises a component A and a component B, wherein the component A is prepared from a light-curing monomer, polybutadiene dimethacrylate, aliphatic polyurethane acrylate, epoxy resin, a activated diluent, a crosslinker, a leveling agent, a dispersant, a coupling agent and light guide powder by means of mixing and reacting; the component B is prepared from a light initiator, epoxy resin-modified aliphatic amine, a defoaming agent, light guide powder and a rheological agent by means of reaction. The invention further relates to a preparation method of the dual-curing light guide glue for the display screen backlight modules. The preparation method has the advantages of short process flow and low cost. The dual-curing light guide glue prepared by the method has the advantages of excellent peel strength, storage stability, impact resistance, high luminance and uniformity and the like.

Description

technical field [0001] The invention relates to a functional adhesive, in particular to a dual-cure light-guiding adhesive used in a display backlight module and a preparation method thereof. Background technique [0002] The traditional light guide plate materials mainly include optical acrylic, polycarbonate, styrene copolymer, and cycloolefin polymer. The advantage of the light guide plate is that the light guides in the direction required by the designer. High light conductivity, converted from a point or line light source to a surface light source, so that the exported light reaches a certain brightness and uniformity. The light guide plate has ultra-thin, small footprint, uniform light emission, bright and soft light, energy saving and environmental protection, and easy installation and maintenance. Fast and other features, widely used in mobile phone screens, LCD backlights, bulletin light boxes, photo frames, signs, film viewers and other fields. [0003] At present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/14C09J147/00C09J163/00C09J11/04C09J11/06C09J11/08
CPCC08K2201/011C08K2201/014C08L2203/20C08L2205/02C08L2205/025C08L2205/035C08L2205/04C09J11/04C09J11/06C09J11/08C09J147/00C09J175/14C08L47/00C08L63/00C08L33/02C08K13/02C08K3/36C08L33/12C08L83/04C08L75/14C08L23/06C08L75/02
Inventor 刘兵卢南刘勇
Owner NANJING NUOBANG NEW MATERIAL CO LTD
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