LED packaging material, its preparation method and application

A technology of LED packaging and ultraviolet light, which is applied in the direction of epoxy resin glue, adhesive type, film/sheet adhesive, etc., can solve the manufacturing and application limitations of LED packaging materials, and the LED packaging film is prone to problems , increase cost and other issues, achieve the effect of improving anti-yellowing property and light transmittance, expanding ultraviolet absorption wavelength and absorption intensity, and reducing dosage

Inactive Publication Date: 2013-09-11
GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the ultraviolet absorption spectrum range and intensity of this kind of ultraviolet light absorber have certain limitations, and the large dosage will easily cause yellowing, which will increase the cost. In ad

Method used

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  • LED packaging material, its preparation method and application
  • LED packaging material, its preparation method and application
  • LED packaging material, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] Example 1

[0029]

[0030] The above weight fraction of crosslinking agent (methylhexahydrophthalic anhydride), crosslinking agent accelerator (tetraethylammonium bromide), antioxidant (tris(2,4-di-tert-butylphenyl) phosphite) ), ultraviolet light stabilizer (bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate), ultraviolet light absorber UV327 (2-(2-hydroxy-3,5- Dibutyl tert-phenyl)-5-chlorobenzotriazole) was added to the flask together, heated to 80 ℃ under magnetic stirring, after the mixture was completely dissolved, cooled to room temperature; then add the above weight fraction of bisphenol A type Stir the epoxy resin evenly to obtain the epoxy composition; place it in a vacuum deaerator at room temperature for 2 hours to remove the bubbles, then pour it into a mold equipped with LEDs, and cure at 130°C for 2 hours. Take it out after natural cooling, and heat it again to 130°C for 2 hours to remove residual stress and volatile components, and then a packaged light emitt...

Example Embodiment

[0031] Example 2

[0032]

[0033] The above weight fraction of crosslinking agent (methylhexahydrophthalic anhydride), crosslinking agent accelerator (tetraethylammonium bromide), antioxidant (tris(2,4-di-tert-butylphenyl) phosphite) ), ultraviolet light stabilizer (bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate), ultraviolet light absorber (5,5`-disulfide-bis-[2 -(2`-hydroxy-3`,5`-di-tert-butylphenyl)-2H-benzotriazole]) was added to the flask together, heated to 80°C under magnetic stirring, until the mixture was completely dissolved, Cool to room temperature; then add the above-mentioned weight fraction of bisphenol A epoxy resin and stir evenly to obtain an epoxy composition; place it in a vacuum deaerator at room temperature for 2 hours to remove air bubbles. Then it is injected into a mold equipped with LEDs, cured at 130°C for 2 hours, cooled naturally, and taken out, and heated to 130°C for 2 hours to remove residual stress and volatile components, and then packaged lig...

Example Embodiment

[0034] Example 3

[0035]

[0036] The above weight fraction of crosslinking agent (methylhexahydrophthalic anhydride), crosslinking agent accelerator (tetraethylammonium bromide), antioxidant (tris(2,4-di-tert-butylphenyl) phosphite) ), ultraviolet light stabilizer (bis(2,2,6,6-tetramethyl-4-piperidinyl) sebacate), ultraviolet light absorber (5,5`-disulfide-bis-[2 -(2`-hydroxy-3`,5`-di-tert-butylphenyl)-2H-benzotriazole]) was added to the flask together, heated to 80°C under magnetic stirring, until the mixture was completely dissolved, Cool to room temperature; then add the above-mentioned weight fraction of bisphenol A epoxy resin and stir evenly to obtain an epoxy composition; place it in a vacuum deaerator at room temperature for 2 hours to remove air bubbles. Then it is injected into a mold equipped with LEDs, cured at 130°C for 2 hours, cooled naturally, and taken out, and heated to 130°C for 2 hours to remove residual stress and volatile components, and then packaged lig...

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Abstract

Belonging to the field of packaging materials, the invention relates to an LED packaging material, its preparation method and application. The material is composed of the following components by weight: 100 parts of epoxy resin, 60 parts of a crosslinking agent, 2 parts of a crosslinking accelerant, 0.1-5 parts of an antioxidant, 0.05-0.25 part of an ultraviolet stabilizer, and 0.05-0.50 part of an ultraviolet absorber. In the invention, a sulfur-containing benzotriazole compound is adopted as the ultraviolet absorber, which has excellent performance and can reach a good synergistic effect with the antioxidant and the ultraviolet stabilizer, and can be used as the ultraviolet absorber of the LED packaging material. Compared with original ultraviolet absorbers, the ultraviolet absorber effectively enlarges the ultraviolet absorption wavelength and the absorption strength, thereby reducing the dosage of the ultraviolet absorber, lowering the cost, and improving the yellowing resistance of an adhesive film. The prepared LED adhesive film product has good stability, and has wide application prospects in industrial production.

Description

technical field [0001] The invention belongs to the field of encapsulation materials, and in particular relates to an LED encapsulation material and a preparation method and application thereof. Background technique [0002] In today's world, energy shortage has always been the most concerned issue. In the field of lighting technology, traditional lighting sources have gradually faded out of people's field of vision due to their high energy consumption and low photoelectric conversion efficiency. As a new type of lighting source, light-emitting diode (LED) has the potential to replace traditional lighting sources in terms of energy saving and pollution reduction, and is one of the ways to solve the current energy crisis in our country. The power consumption of LED lighting is only 1 / 10 of that of traditional light sources, the luminous efficiency is increased by 100 times, and the cost is reduced by 10 times. It has the characteristics of environmental friendliness, small s...

Claims

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Application Information

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IPC IPC(8): C08L63/00C08L63/02C08G59/42C08K5/526C08K5/3435C08K5/378C09J7/00C09J163/02C09J11/06H01L33/56
Inventor 陈鸣才许凯杨坤方燕许正敏
Owner GUANGZHOU CHEM CO LTD CHINESE ACADEMY OF SCI
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