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Polybutylene fumarate-based material for environment-friendly LED encapsulation glue and preparation method thereof

A butylene glycol maleate and LED encapsulation technology, which is applied in adhesives, non-polymer adhesive additives, adhesive additives, etc., can solve the problems of optical properties, mechanical properties, thermal stability, etc., and achieve light transmission Improved performance and heat resistance, high light transmittance, and short curing time

Active Publication Date: 2019-03-01
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Chinese patent "An Environmentally Friendly Thermally Stable LED Photosensitive Packaging Adhesive and Its Preparation Method" (Publication No.: CN104263305A, Publication Date: January 7, 2015) prepared an environmentally friendly thermally stable LED by using polytrimethylene fumarate Photosensitive encapsulant, which still needs to be improved in terms of optical properties, mechanical properties, and thermal stability after curing
But how to improve, there is no published literature for reference

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0024] The final cured product of the LED photosensitive encapsulant made by the preparation process of the present invention is a PBF / PPF-DA cross-linked cured body, i.e. polybutylene fumarate / polypropylene fumarate co-diacrylate cross-linked Joint solidification. By adjusting the light intensity and the distance between the light source and the sample, the curing time of PBF and PPF-DA can be controlled in a short time to meet the curing time requirements of LED photosensitive packaging adhesives. Different ratios of PBF / PPF-DA were prepared, and the physical properties of the cross-linked cured body as LED photosensitive encapsulant were tested. The results show that the cross-linked cured product has higher light transmittance, refractive index, thermal stability and mechanical properties under a certain double bond ratio. The specific instructions are as follows:

[0025] Preparation of component A: Weigh a certain amount of diethyl fumarate, 1,4-butanediol, anhydrous z...

example 1

[0028]Example 1: ① Weigh 1.00g of component A (PBF) and 1.86g of component B (PPF-DA) respectively, and the double bond ratio of component A to component B is 1:2. The weighed components A and B were dissolved in 30 mL of dry dichloromethane and mixed to obtain a mixed solution. ② Stir the mixed solution with a magnetic stirrer and continue stirring for 1 h. After stirring, remove the magnet. The mixed solution was rotary evaporated under vacuum conditions (-0.06MPa), the temperature was set at 37°C, and the rotary evaporation continued for 1h. ③ Seal the mouth of the Erlenmeyer flask containing the mixture after rotary evaporation with coarse filter paper to prevent the volatilization of the mixture, put it in a vacuum drying oven, vacuumize (-0.06MPa) and dry it for 12 hours at room temperature to obtain PBF and Mixture of PPF-DA. ④ Prepare the (2,4,6-trimethylbenzoyl)phenylphosphine oxide (BAPO) solution required for photocrosslinking. BAPO was dissolved in dichlorometh...

example 2

[0030] Example 2: ① Weigh 1.50g of component A (PBF) and 1.40g of component B (PPF-DA) respectively, and the double bond ratio of component A to component B is 1:1. The weighed components A and B were dissolved in 30 mL of dry dichloromethane and mixed to obtain a mixed solution. ② Stir the mixed solution with a magnetic stirrer and continue stirring for 1 h. After stirring, remove the magnet. The mixed solution was rotary evaporated under vacuum conditions (-0.06MPa), the temperature was set at 37°C, and the rotary evaporation continued for 1h. ③ Seal the mouth of the Erlenmeyer flask containing the mixture after rotary evaporation with coarse filter paper to prevent the volatilization of the mixture, put it in a vacuum drying oven, vacuumize (-0.06MPa) and dry it for 12 hours at room temperature to obtain PBF and Mixture of PPF-DA. ④ Prepare the (2,4,6-trimethylbenzoyl)phenylphosphine oxide (BAPO) solution required for photocrosslinking. BAPO was dissolved in dichloromet...

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Abstract

The invention provides a poly-butyl glycol fumaric acid ester-based material for an environment-friendly LED packaging adhesive and a preparation method of the poly-butyl glycol fumaric acid ester-based material. A final curing product is a PBF / PPF-DA cross-linking solidified body, namely, a poly-butyl glycol fumaric acid ester / poly-butyl glycol fumaric acid ester diacrylic ester cross-linking solidified body, the solidified product is free of toxicity, the solidification time can be controlled within a relatively short time range by adjusting the lighting intensity and the distance between a light source and a sample, the requirements of LED packaging on the solidification time can be greatly met, and the solidified product is relatively good in light transmittance, refractive index, thermal stability and mechanical property.

Description

technical field [0001] The invention relates to an environment-friendly LED photosensitive packaging glue, in particular to a polybutylene fumarate-based LED photosensitive packaging glue and a preparation method thereof. Background technique [0002] Compared with traditional light sources, LED solid-state light-emitting devices have the advantages of low working voltage, high luminous efficiency, long life, good monochromaticity, solid state, and do not contain harmful substances such as mercury and lead. They are recognized as the fourth-generation light source to replace incandescent lamps. . [0003] With the rapid development of the electronic information industry, light-curable adhesives have also made great progress. Light-curing adhesives have the advantages of high curing efficiency, low energy consumption, no solvent pollution, and can be cured at room temperature. They have developed rapidly and have been widely used in daily life fields such as medical care and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J167/06C09J11/06C08J3/24
CPCC08J3/246C08J2367/06C08L2201/08C08L2201/10C08L2203/206C08L2205/025C09J11/06C09J167/06C08L67/06
Inventor 郭大刚王亮
Owner XI AN JIAOTONG UNIV
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