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Glue composition, quantum dot glue, quantum dot composite material, quantum dot device

A composite material and quantum dot technology, applied in the fields of quantum dot glue, quantum dot devices, and quantum dot composite materials, can solve the problems of decreased efficiency of quantum dots, poor oxygen barrier performance, insufficient supply, etc., so as to improve the water and oxygen barrier properties, Improve the effect of large black borders and reduce efficiency

Active Publication Date: 2021-10-08
NANJING TECH CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, the compatibility of urethane acrylate prepolymers with quantum dots is poor, which will lead to a decrease in the efficiency of quantum dots; the cost of urethane acrylate prepolymers for quantum dots is high, and the supply is insufficient; urethane acrylate prepolymers The oxygen barrier performance is poor, and the black edge is larger under the condition of light aging

Method used

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  • Glue composition, quantum dot glue, quantum dot composite material, quantum dot device

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preparation example Construction

[0052] The present invention also provides the preparation method of above-mentioned glue composition, comprises the following steps:

[0053] S1, uniformly disperse the block copolymer in the first acrylate monomer to obtain a mixture, the block copolymer includes a middle block and a first block and a second block connected at both ends of the middle block , the middle block is a soft segment, and the first block and the second block are rigid segments;

[0054] S2, add the first acrylate monomer and the second acrylate monomer to the above mixture to adjust the viscosity, then add the curing agent, mix well, the second acrylate monomer is a difunctional acrylate monomer and / or multifunctional acrylate monomers.

[0055] In some embodiments, the monomer of the above-mentioned middle block is an alkene compound, the monomer of the first block is an aromatic hydrocarbon containing a carbon-carbon double bond or a nitrile compound containing a carbon-carbon double bond, and th...

Embodiment 1

[0065] In a three-necked flask, the block copolymer SIS (relative molecular mass: 150,000, rigid segment ratio 15%) was added to isobornyl acrylate, wherein the mass fraction of SIS was 30%, the temperature was raised to 60°C, and stirred Increase the speed to 500-800rmp, stir for 1-1.5h, until the block copolymer is completely dissolved, the solution appears clear and transparent, and the preparation of the block copolymer solution is completed.

[0066] Get 50 mass parts of the above-mentioned block copolymer solution, add 40 mass parts of isobornyl acrylate, 10 mass parts of dipropylene glycol diacrylate (difunctional acrylate monomer), add 3 mass parts of 2 simultaneously, 4,6-trimethylbenzoyl-diphenylphosphine oxide (curing agent), mix evenly, the solution is clear and transparent, and the glue preparation is completed.

Embodiment 2

[0068]In a three-necked flask, the block copolymer SIS (relative molecular mass: 150,000, rigid segment ratio 30%) was added to isobornyl acrylate, wherein the mass fraction of SIS was 30%, the temperature was raised to 60°C, and stirred Increase the speed to 500-800rmp, stir for 1-1.5h, until the block copolymer is completely dissolved, the solution appears clear and transparent, and the preparation of the block copolymer solution is completed.

[0069] Get 50 mass parts of the above-mentioned block copolymer solution, add 40 mass parts of isobornyl acrylate, 10 mass parts of dipropylene glycol diacrylate (difunctional acrylate monomer), add 3 mass parts of 2 simultaneously, 4,6-trimethylbenzoyl-diphenylphosphine oxide (curing agent), mix evenly, the solution is clear and transparent, and the glue preparation is completed.

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Abstract

The invention discloses a glue composition, which includes a block copolymer, a reactive diluent and a curing agent. The block copolymer includes a middle block and a first block and a second block connected at both ends of the middle block. The block is a flexible segment, the first block and the second block are rigid segments, and the reactive diluent includes acrylic ester monomers. The present invention uses a block copolymer to replace the polyurethane acrylate prepolymer in the prior art. The block copolymer plays the role of physical filling in the glue combination and is interspersed in the molecular chain of the reactive diluent. After the reactive diluent is cured , and finally form a three-dimensional network structure; the stability of the block copolymer is also better than that of the polyurethane acrylate prepolymer, so the composite material obtained by curing the glue composition of the present invention can significantly improve the aging black edge problem under light conditions; in addition , The cost of block copolymers is lower, so replacing polyurethane acrylate prepolymers with block copolymers is beneficial to reduce costs.

Description

technical field [0001] The invention relates to the technical field of quantum dot materials, in particular to a glue composition and a preparation method thereof, a quantum dot glue, a quantum dot composite material and a quantum dot device. Background technique [0002] The particle size of quantum dots is generally between 1 and 10 nm. Since electrons and holes are quantum-confined, the continuous energy band structure becomes a discrete energy level structure with molecular characteristics, and can emit fluorescence after being excited. Quantum dots have excellent fluorescence characteristics such as wide excitation spectrum and continuous distribution, narrow and symmetrical emission spectrum, adjustable color, high photochemical stability, and long fluorescence lifetime. By controlling the shape, structure, and size of quantum dots, the electronic states such as the energy gap width, exciton binding energy, and exciton energy blue shift can be adjusted conveniently. T...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J4/06C09J4/02C09J11/06C09J11/04
Inventor 方龙吕梦冰朱尘娟
Owner NANJING TECH CORP LTD
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