Novel modified nanometer titanium dioxide doping alicyclic epoxy resin LED (light emitting diode) encapsulation glue

A nano-titanium dioxide, LED packaging technology, applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of low short-wave transmittance, poor UV resistance, low moisture absorption, etc., and achieve faster curing rate, low The effect of improving hygroscopicity and dispersibility

Inactive Publication Date: 2012-10-24
SHANGHAI ZHONGXIN YUXIANG CHEM
View PDF2 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a new type of LED encapsulant with high transparency, good UV aging resistance, strong cohesive force, high toughness, fast curing, low viscosity and low hygroscopicity, which is modified by silane coupling agent. Nano-titanium dioxide is doped with alicyclic epoxy resin, avoiding the use of high-cost silicone, and at the same time overcomes the shortcomings of existing bisphenol A epoxy resin encapsulation adhesives such as high moisture absorption, poor UV resistance, and low short-wave transmittance, and is more suitable Use high-end LED encapsulants, high-power LED encapsulants or UV-based white and blue LED encapsulants

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] (1) Preparation of Component A: 96.6% 4-vinyl epoxycyclohexane, 2.6% propylene oxide butyl ether, 0.6% softener, 0.14% defoamer and 0.06% transparent blue-violet dye The color paste is weighed according to the proportion, and stirred at 70-90°C for 3-4h until the mixture is uniform;

[0021] (2) Preparation of modified nanoparticles: adjust the pH value of 15% silane coupling agent aqueous solution to 3-4, pour it into a constant pressure dropping funnel, and then slowly add it dropwise to 85% nano-titanium dioxide dispersion at 75°C, Drop it within 30 minutes and keep it warm for 3 hours;

[0022] (3) Preparation of component B: the mixture of 98.4% by mass percentage of methylhexahydrophthalic anhydride and polyazelaic anhydride, 0.97% of tetramethylammonium bromide, 0.5% of glycerin, and 0.05% of silane coupling agent were modified Titanium dioxide nanometer and 0.08% tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl) propionate] pentaerythritol ester are weighed in pro...

Embodiment 2

[0025] (1) Preparation of component A: 96.8% 3-oxiranyl-7-oxabicyclo[4,1,0]heptane, 2.5% propylene oxide phenyl ether, 0.5% softener , 0.14% defoamer and 0.06% transparent blue-violet dye paste are weighed in proportion, and stirred at 70-90°C for 3-4h until they are evenly mixed;

[0026] (2) Preparation of modified nanoparticles: adjust the pH value of 15% silane coupling agent aqueous solution to 3-4, pour it into a constant pressure dropping funnel, and then slowly add it dropwise to 85% nano-titanium dioxide dispersion at 75°C, Drop it within 30 minutes and keep it warm for 3 hours;

[0027] (3) Preparation of component B: the mixture of 98.4% by mass percentage of methylhexahydrophthalic anhydride and polyazelaic anhydride, 1% tetramethylammonium iodide, 0.5% glycerin, and 0.05% silane coupling agent were modified Proportionally weighed nano-sized titanium dioxide and 0.05% 2,6-di-tert-butyl-p-cresol, stirred at 70-90°C for 3-4h until uniformly mixed;

[0028] ⑷ A and ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
particle diameteraaaaaaaaaa
impact strengthaaaaaaaaaa
Login to view more

Abstract

The invention relates to novel modified nanometer titanium dioxide doping alicyclic epoxy resin LED (light emitting diode) encapsulation glue, which is characterized in that the encapsulation glue consists of ingredients A and ingredients B, and the ingredients A and the ingredients B are used for construction after being mixed according to a proportion being 1:(0.9-1.0), wherein the ingredients A consist of alicyclic epoxy resin, reactive diluents, transparent blue purple dye color paste, defoaming agents and softness increase agents, and the ingredients B consist of curing agents, accelerants, silane coupling agent modified nanometer ultraviolet absorption agents, polyalcohol and antioxidants. The nanometer titanium dioxide doping alicyclic epoxy resin LED glue with good ultraviolet ageing resistance performance, high bonding force, fast curing and low viscosity and moisture absorption is provided, the adoption of high-cost organic silicon is avoided, meanwhile, the defects of high moisture absorption, poor ultraviolet resistance, low shortwave transmittance and the like of the existing bisphenol A type epoxy resin are overcome, and the LED encapsulation glue is more suitable for being used as high-grade LED encapsulation glue, high-power LED encapsulation glue or LED encapsulation glue based on white light and blue light of ultraviolet light.

Description

technical field [0001] The invention relates to an LED encapsulation adhesive, in particular to a nano-titanium dioxide-doped alicyclic epoxy resin LED encapsulation adhesive modified by a silane coupling agent with good ultraviolet aging resistance and strong adhesion. Background technique [0002] Light-emitting diodes (LEDs), as the third-generation semiconductor lighting source, are widely used in lighting, radiation sources, and displays because they have advantages in all aspects compared with incandescent lamps and fluorescent lamps. During the use of LEDs, the photons generated by radiative recombination will be lost when they are emitted outwards, and a lot of light cannot be emitted from the chip to the outside. By coating the surface of the chip with a transparent adhesive layer with a relatively high refractive index, that is, encapsulation adhesive, since the adhesive layer is between the chip and the air, the loss of photons at the interface can be effectively...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C09J163/00C09J11/04H01L33/56
Inventor 曹祥来孔庆茹乔毅
Owner SHANGHAI ZHONGXIN YUXIANG CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap