Light curing adhesive and light curing method thereof

A light-curing, adhesive technology, applied in the direction of adhesives, non-polymer organic compound adhesives, non-polymer adhesive additives, etc., can solve the problem that the curing depth of light-cured acrylic adhesive is difficult to further increase, and achieve high chromaticity. Effect

Inactive Publication Date: 2019-02-12
1ST SPECIAL MATERIAL INT HLDG LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, light-curable acrylic adhesives usually cannot achieve high chromaticity requirements in one curing step (the chromaticity OD usually does not exceed 2). In addition, it is difficult to further increase the curing depth of light-curable acrylic adhesives (usually less than 400 μm).

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] By weight percentage, mix 60% acrylic acid prepolymer (cytec company produces, model: EB9260), 30% DPGDA, 5% black reversible temperature-changing ink (model: Black 5C2X) and 5% Irgacure184, thus obtain The photocurable adhesive.

Embodiment 2

[0024] By weight percent, mix 67% of acrylic acid prepolymer (produced by cytec company, model: 553), 28% of DPGDA, 3% of black reversible temperature-changing ink (model: Black 5C2X), 1% of Irgacure369, 0.7% TPO and 0.3% ITX to obtain the photocurable adhesive.

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PUM

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Abstract

A light curing adhesive comprises an acrylic prepolymer, an acrylic monomer, a thermochromic pigment and a photoinitiator, wherein the thermochromic pigment shows an initial color at room temperatureand becomes colorless and transparent when the temperature is higher than a preset temperature. The invention also provides a light curing method of the light curing adhesive.

Description

technical field [0001] The invention relates to an adhesive, in particular to a light-curing adhesive and a light-curing method thereof. Background technique [0002] Light-curing acrylic adhesive is a type of adhesive that is cured by ultraviolet light. For fields such as chip security, integrated circuit chip sealing, IC encapsulation, and reinforcement of electronic circuits, black photocurable acrylic glue is usually required. However, when the chroma (that is, the blackness) of the light-cured acrylic adhesive is high, the energy of light is easily absorbed by the acrylic material during the curing process, causing the light intensity to gradually weaken from the surface of the acrylic material to the center. By the time the light reaches the center of the acrylic, the light intensity may typically have been reduced to 1% of its original level. Moreover, for this type of photocurable acrylic adhesive, the higher the chromaticity of the material, the more obvious the w...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J4/02C09J4/06C09J11/06
CPCC09J4/06C09J11/06
Inventor 郭俊宏
Owner 1ST SPECIAL MATERIAL INT HLDG LTD
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