Modified polyphenylene sulfide light diffusion agent for LED epoxy packaging and preparation method thereof

A technology of polyphenylene sulfide and light diffusing agent, applied in the direction of epoxy resin glue, adhesive, adhesive type, etc., can solve the problems of difficult preparation process of diffusing powder, small possibility of stable mass production, etc., and achieve excellent optical Features, excellent UV resistance, high light extraction efficiency

Active Publication Date: 2020-12-11
JIANGSU AISEN SEMICON MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the preparation process of the diffusion powder involved in the above two patents is relatively difficult. The multilayer microspheres with different refractive indices of the layers mentioned in CN201010507644.1 are less likely to be stably mass-produced; while the patent CN200880111957.6 mentions The light-diffusing microspheres are still based on traditional polymer powders, such as polymethyl methacrylate, polycarbonate, polystyrene, etc., compared with the polyphenylene sulfide full aromatic polymer of the present invention, the heat-resistant Performance and aging resistance are still challenged

Method used

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  • Modified polyphenylene sulfide light diffusion agent for LED epoxy packaging and preparation method thereof
  • Modified polyphenylene sulfide light diffusion agent for LED epoxy packaging and preparation method thereof
  • Modified polyphenylene sulfide light diffusion agent for LED epoxy packaging and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In the first step, first add 50ml of NMP solution into a clean and dry three-necked flask, and pass nitrogen gas. In the second step, dissolve 2.5g of special epoxy resin E-1 in NMP organic solvent, heat to 60°C to help dissolve, and continue Stir for 1 hour; in the third step, evenly disperse 47.5g of PPS masterbatch in the mixed solution in the second step, then raise the temperature to 100°C and continue to stir for 4 to 6 hours, and cool down to room temperature naturally after the reaction is completed; finally, in the nitrogen protection environment Next, grind the dispersion liquid obtained in the third step in a ball mill for 10 minutes, repeat three times, and control the temperature below 60°C. After the product is washed with methanol or ethanol to remove the solvent, it is dried in a vacuum oven at 50°C under negative pressure to obtain a high Refractive index modified polyphenylene sulfide white powder p-1.

[0032] Take 3.5g p-1 and join in the commerciall...

Embodiment 2

[0034] In the first step, first add 50ml of NMP solution into a clean and dry three-necked flask, and pass nitrogen gas. In the second step, dissolve 8.33g of special epoxy resin E-2 in NMP organic solvent, heat to 60°C to help dissolve, and continue Stir for 1 hour; in the third step, evenly disperse 42.67g of PPS masterbatch in the mixed solution in the second step, then raise the temperature to 160°C and continue stirring for 4 to 6 hours, and cool down to room temperature naturally after the reaction; Next, grind the dispersion obtained in the third step in a ball mill for 10 minutes, repeat three times, and control the temperature below 60°C. After the product is washed with methanol or ethanol to remove the solvent, it is dried in a vacuum oven at 50°C under negative pressure to obtain a high Refractive index modified polyphenylene sulfide white powder p-2.

[0035] Take 3.0g p-2 and add it to the commercially available two-component encapsulant (agent A is a modified ep...

Embodiment 3

[0037] In the first step, first add 50ml of NMP solution into a clean and dry three-necked flask, and pass nitrogen gas. In the second step, dissolve 16.67g of special epoxy resin E-3 in NMP organic solvent, and heat it to 60°C to help dissolve it. Stir for 1 hour; in the third step, evenly disperse 33.33g of PPS masterbatch in the mixed solution in the second step, then raise the temperature to 80°C and continue stirring for 4 to 6 hours, and cool down to room temperature naturally after the reaction is completed; finally, under nitrogen protection environment Grind the dispersion in the third step for 10 minutes in a ball mill, repeat three times, and control the temperature below 60°C. After the product is washed with methanol or ethanol to remove the solvent, it is dried in a vacuum oven at 50°C under negative pressure to obtain a high refractive index. rate of modified polyphenylene sulfide white powder p-3.

[0038] Take 3.0g p-3 and add it to the commercially available ...

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Abstract

The invention discloses a modified polyphenylene sulfide light diffusion agent for LED epoxy packaging and a preparation method thereof, the modified polyphenylene sulfide light diffusion agent is prepared from polyphenylene sulfide masterbatch with a glass transition temperature of 70-130 DEG C and a melting point of 220-300 DEG C and special epoxy resin in a nitrogen environment, and the ratio of the polyphenylene sulfide masterbatch to the special epoxy resin is 10: 0.5-10: 12. The modified polyphenylene sulfide light diffusion agent has the advantages of high refractive index, excellent temperature resistance and excellent ultraviolet resistance, can be easily dispersed in LED epoxy packaging adhesive, can greatly improve the toughness of the epoxy packaging adhesive, achieves the toughening effect, can make the LED epoxy packaging adhesive have excellent optical characteristics, and achieves the effect of high light extraction efficiency.

Description

【Technical field】 [0001] The invention belongs to the field of LED epoxy packaging, in particular to a modified polyphenylene sulfide light diffusing agent for LED epoxy packaging and a preparation method thereof. 【Background technique】 [0002] LED is a point light source. In practical applications, it is usually necessary to transform it into a line light source or a surface light source to make the light bright and soft. This transformation is inseparable from an indispensable light diffusion material. The light diffusing agent can increase the scattering and transmission of light, cover the light source and glare light source, and at the same time make the whole resin emit softer, more beautiful and elegant light, achieving the comfortable effect of light transmission and opacity. As an additive of epoxy resin, light diffusing agent can effectively solve the optical problems of epoxy resin. At present, light diffusing agents mainly include inorganic light diffusing agen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J11/08C09J163/00
CPCC08L2201/08C08L2203/206C08L2205/025C08L2205/03C09J11/08C09J163/00C08L63/00C08L81/02
Inventor 王元元甘梦祥徐楠向文胜谢立洋赵建龙张兵
Owner JIANGSU AISEN SEMICON MATERIAL CO LTD
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