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

A composition and quantum dot technology, applied in the directions of non-polymer organic compound adhesives, adhesives, adhesive additives, etc., can solve the problems of decreased quantum dot efficiency, insufficient supply, poor oxygen barrier performance, etc. Barrier performance, alleviating the decrease in efficiency, and improving the effect of large black edges

Active Publication Date: 2019-05-10
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 and quantum dot device

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preparation example Construction

[0051] The present invention also provides the preparation method of above-mentioned glue composition, comprises the following steps:

[0052] 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;

[0053] 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.

[0054] 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

[0064] 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.

[0065] 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

[0067]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.

[0068] 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, comprising a block copolymer, an active diluent and a curing agent. The block copolymer includes an intermediate block and a first and second blocks connected to the two ends of the intermediate block; the intermediate block is a flexible chain segment; the first and second blocks are rigid chain segments; the active diluent includes an acrylate monomer.The polyurethane acrylate prepolymer of the prior art is replaced with the block copolymer; the block copolymer plays a physical filling role in the glue composition and penetrates the molecular chains of the active diluent; after the active diluent cures, a three-dimensional network structure is formed; the block copolymer has better stability than the polyurethane acrylate prepolymer; therefore, a composite made by curing the glue composition herein helps evidently improve the aging black edge problem under light conditions; in addition, the cost of the block copolymer is low, so that the replacement of the polyurethane acrylate prepolymer via the block copolymer helps reduce the cost.

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 Applications(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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