Polysilsesquioxane reinforced light emitting diode (LED) encapsulation organic silicon rubber and preparation method thereof

A polysilsesquioxane, LED packaging technology, applied in the direction of semiconductor devices, electrical components, circuits, etc., can solve the problem of few reports of POSS applications, and achieve the effect of improving tensile strength and hardness

Active Publication Date: 2011-09-14
江苏科琪高分子材料研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] There are few reports on the application of POSS in LED packaging materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 1) Add 400ml of solvent toluene and 200ml of deionized water to a 1000ml clean three-necked flask, then add 200g of vinyltrichlorosilane at 0°C for about 30 minutes under mechanical stirring, react for 72 hours, filter, wash, and dry in a vacuum oven. Obtain 37.4g vinyl polysilsesquioxane, yield 38.2%;

[0022] 2) To 20.0g vinyl silicone oil Me 2 ViSiO(Me 2 SiO) 400 (MeViSiO) 8 SiViMe 2 Add 8.2g of hydrogen-containing silicone oil Me 2 HSiO(Me 2 SiO)200 (MeHSiO) 10 SiHMe 2 , 1.40 g of the obtained vinyl polysilsesquioxane, 0.0292 g of tackifier orthosilicate, 0.044 g (about 15 ppm) of methyl vinyl siloxane coordinated platinum complex (commercially available) , 0.044g of the inhibitor methyl butynol (about 15ppm), mixed evenly, degassed in vacuum for 5min, and vulcanized at 150°C for 0.5h to obtain the product. The measured refractive index of the product is 1.41, the tensile strength is 2.4MPa, the hardness is 38 shore A, and the light transmittance is 99.8% ...

Embodiment 2

[0024] To 20.0g vinyl silicone oil Me 2 ViSiO(Me 2 SiO) 400 (MeViSiO) 8 SiViMe 2 Add 12.3g of hydrogen-containing silicone oil Me 2 HSiO(Me 2 SiO) 200 (MeHSiO) 10 SiHMe 2 , 6.46g polysilsesquioxane obtained in Example 1, 0.0292g isopropyl titanate, 0.096g (about 30ppm) platinum complex catalyst Cp 2 PtCl 2 , 0.048g (about 15ppm) pyridine, mixed evenly, degassed in vacuum for 5min, and vulcanized at 100°C for 2h, the product obtained had a refractive index of 1.41, a tensile strength of 3.8MPa, and a hardness of 45 shore A, measured by a UV spectrophotometer The light transmittance is 99.5%.

Embodiment 3

[0026] To 20.0g vinyl silicone oil Me 2 ViSiO(Me 2 SiO) 400 (MeViSiO) 8 SiViMe 2 Add 13.67g of hydrogen-containing silicone oil Me 2 HSiO(Me 2 SiO) 200 (MeHSiO) 10 SiHMe 2 , 13.47g polysilsesquioxane obtained in Example 1, 0.0584g KH-560, 0.022g (about 5ppm) platinum complex catalyst Pt(PPh 3 ) 4 , 0.070g (about 15ppm) quinine, after mixing evenly, vacuum defoaming for 5min, and vulcanization at 150°C for 2h, the product obtained has a refractive index of 1.41, a tensile strength of 4.5MPa, and a hardness of 67shore A, measured by a UV spectrophotometer The light transmittance is 99.5%.

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Abstract

The invention relates to a polysilsesquioxane reinforced light emitting diode (LED) encapsulation organic silicon rubber and a preparation method thereof. The invention needs to solve the technical problems that the rubber has satisfying light transmittance, the mechanical properties of the rubber such as tensile strength, hardness and the like are improved and the bonding force of the rubber and a bracket is good. Vinyl silicone oil, hydrogen-containing silicon oil and polysilsesquioxane are used as raw materials in the rubber and mixed in a molar ratio of (Si-H): (Si-Vi) of (0.1-20): 1, and then the mixture of a platinum complex catalyst and an inhibitor is added into the raw materials and mixed uniformly to prepare the rubber.

Description

technical field [0001] The invention relates to an LED packaging silicone rubber, in particular to a polysilsesquioxane-reinforced LED packaging silicone rubber and a preparation method thereof. Background technique [0002] High-brightness light-emitting diode (Light Emitting Diode, LED) is a new type of lighting source. It consumes only 1 / 10 of the power of traditional light sources. It does not use mercury that seriously pollutes the environment. It is small in size, low in driving voltage and long in life. Become the new focus of the global lighting industry. With the in-depth research and development of ultra-high brightness LEDs, power white LEDs are expected to become the fourth-generation light source after incandescent lamps, fluorescent lamps, and high-intensity gas discharge lamps. [0003] Encapsulation materials that are resistant to thermal shock, non-yellowing, high light transmittance, and high refractive index are key technologies in LED manufacturing. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C08G77/20C08G77/12C08G77/06H01L33/56C08J3/24
Inventor 来国桥杨雄发杨琳琳曹建邵倩蒋剑雄华西林
Owner 江苏科琪高分子材料研究院有限公司
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