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Ultraviolet light curing black adhesive and preparation method thereof

An ultraviolet light and adhesive technology, applied in the direction of adhesives, adhesive types, polyurea/polyurethane adhesives, etc., can solve the problems of adhesive force and double 85 test failing to meet the requirements, and achieve easy industrial implementation, adhesion Good junction performance and the effect of improving adhesion

Active Publication Date: 2020-06-19
广州日高新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hybrids using the traditional initiation system fail to meet the requirements in the adhesion and double 85 tests.

Method used

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  • Ultraviolet light curing black adhesive and preparation method thereof
  • Ultraviolet light curing black adhesive and preparation method thereof
  • Ultraviolet light curing black adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] The UV-curable black adhesive of this embodiment is prepared from the following raw materials in terms of mass percentage:

[0045]

[0046] The modified polyurethane acrylate of this embodiment is prepared from the following raw materials: a mixture of polyether diol and mercaptan, diisocyanate, hydroxyl-functionalized acrylate, catalyst and polymerization inhibitor; wherein polyether diol is poly Ethylene glycol, thiol is ethylene glycol bis(3-mercaptopropionate), the molar ratio of polyether diol and thiol is 4.5:1; diisocyanate is isophorone diisocyanate with a molar ratio of 3:1 A combination of isocyanate and toluene diisocyanate; the hydroxy-functionalized acrylate is hydroxyethyl acrylate, and the catalyst and inhibitor are dibutyltin dilaurate and 2,6-di-tert-butyl-4-methylphenol, respectively; poly The molar ratio of the mixture of ether dihydric alcohol and thiol, diisocyanate, and hydroxyl-functionalized acrylate is 1:2:2.1; the addition amount of catalys...

Embodiment 2

[0053] The UV-curable black adhesive of this embodiment is prepared from the following raw materials in terms of mass percentage:

[0054]

[0055] The modified polyurethane acrylate of this embodiment is prepared from the following raw materials: a mixture of polyether diol and mercaptan, diisocyanate, hydroxyl-functionalized acrylate, catalyst and polymerization inhibitor; wherein polyether diol is poly Propylene glycol, thiol is 1,4-butanediol bis(3-mercaptopropionate), the molar ratio of polyether diol and thiol is 4.5:1; diisocyanate is isophor with a molar ratio of 3:1 A combination of ketone diisocyanate and toluene diisocyanate; the hydroxy-functionalized acrylate is hydroxypropyl acrylate, and the catalyst and inhibitor are dibutyltin dilaurate and 2,6-di-tert-butyl-4-methylphenol, respectively The mol ratio of the mixture of polyether glycol and mercaptan, diisocyanate, hydroxyl functionalized acrylate is 1:2:2.1; The add-on of catalyst and stopper is respectively...

Embodiment 3

[0059] The UV-curable black adhesive of this embodiment is prepared from the following raw materials in terms of mass percentage:

[0060]

[0061] The modified polyurethane acrylate of this embodiment is prepared from the following raw materials: a mixture of polyether diol and mercaptan, diisocyanate, hydroxyl-functionalized acrylate, catalyst and polymerization inhibitor; wherein polyether diol is poly (1,4-butanediol), the mercaptan is ethylene glycol bis(3-mercaptopropionate), the molar ratio of polyether diol and mercaptan is 4.5:1; the molar ratio of diisocyanate is 3:1 A combination of isophorone diisocyanate and toluene diisocyanate; the hydroxy-functional acrylate is hydroxyethyl acrylate, and the catalyst and inhibitor are dibutyltin dilaurate and 2,6-di-tert-butyl-4 - methylphenol; the molar ratio of the mixture of polyether diol and mercaptan, diisocyanate, hydroxyl-functionalized acrylate is 1:2:2.1; the addition amount of catalyst and polymerization inhibitor...

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Abstract

The invention relates to an ultraviolet-curing black adhesive and a preparation method of same. The UV-curing black adhesive is mainly prepared from the following raw materials: modified polyurethane acrylate, an active monomer, matt powder, carbon black, a photoinitiator and a thermo-initiator. The active monomer includes at least two selected from isobornyl acrylate, tetrahydrofuran acrylate, cyclic trimethylolpropane methylal acrylate, tricyclodecane dimethanol diacrylate, tri(2-hydroethyl)isocyanurate triacrylate. The modified polyurethane acrylate is mainly prepared from a mixture of polyether glycol and mercaptan, diisocyanate, hydroxyl-functionalized acrylate, a catalyst and a polymerization inhibitor. The diisocyanate is a composition composed of isophorone diisocyanate and toluene diisocyanate. The UV-curing black adhesive can satisfy the adhesion force demand of curing a thick coating, and is free of any undesirable phenomenon, such as oil dirt, for more than 300 h in a double-85 test.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to an ultraviolet light curing black adhesive and a preparation method thereof. Background technique [0002] In the COB production process of mobile phone lens, the traditional process is to use transparent UV glue + gasket to seal, the new process is to use matte black UV adhesive to form the seal at one time, and the gasket is canceled on the parts, which can save parts and processes, thereby improving efficiency. and cost savings. [0003] The matt black UV adhesive is required to achieve a thickness of 0.5mm (500 microns) with an adhesive force of greater than 6kgf and good internal curing. It can pass the double 85 test, that is, there is no oil stain on the lens surface for at least 168 hours. [0004] For ordinary UV-cured coatings, thick coatings exceeding 100 microns are prone to incomplete curing and insufficient adhesion. Compared with the transparent system, the UV co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C09J11/04C08G18/75C08G18/76C08G18/67C08G18/66C08G18/48C08G18/38C08G18/10
CPCC08G18/10C08G18/672C08G18/724C08G18/755C08G18/7614C08K3/04C09J11/04C09J175/14C08G18/6666
Inventor 李长连
Owner 广州日高新材料科技有限公司
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