Methyl phenyl silicone oil for LED (light emitting diode) potting sealant and preparation method thereof

A technology of methylphenyl silicone oil and methylphenyl, which is applied in chemical instruments and methods, adhesives, and other chemical processes, can solve problems such as low bonding performance, unstable properties, and small refractive index, and achieve bonding Good performance, reasonable ratio, large refractive index effect

Inactive Publication Date: 2015-12-02
桂林健评环保节能产品开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, methylphenyl silicone oil is a heavy component of synthetic methylphenyl silicone polymers. At present, synthetic methylphenyl silicone oil has disadvantages such as unstable properties, low adhesive performance, small refractive index, and easy to appear turbidity.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] First, the components weighed in parts by weight are: 20 parts of methylphenyl mixed rings, 20 parts of octamethylcyclotetrasiloxane, 30 parts of tetramethylcyclotetrasiloxane, tetramethyldivinyl 20 parts of disiloxane, 9 parts of potassium hydroxide silicon alkoxide, 1 part of organic silicon phosphate.

[0022] Then, prepare methylphenyl silicone oil: (1) add methylphenyl mixed ring body, octamethylcyclotetrasiloxane, tetramethylcyclotetrasiloxane, tetramethyldivinyldisiloxane In the reactor, at a temperature of 40°C and a pressure of -0.09MP a Dehydration under the condition of 1h; (2) The dehydrated mixture is heated up to 180°C, and potassium hydroxide silicon alkoxide catalyst is added, and the temperature is 180°C under the condition of equilibrium reaction for 8h; (3) After the reaction is completed, the reactor Add organosilicon phosphate in proportion to neutralize for 1.5h, then raise the temperature to remove low-molecular substances, and filter to obtain m...

Embodiment 2

[0024] First, the components weighed in parts by weight are: 22 parts of methylphenyl mixed rings, 22 parts of octamethylcyclotetrasiloxane, 28 parts of tetramethylcyclotetrasiloxane, tetramethyldivinyl 18 parts of disiloxane, 8 parts of potassium hydroxide silicon alkoxide, 2 parts of organic silicon phosphate.

[0025] Then, prepare methylphenyl silicone oil: (1) add methylphenyl mixed ring body, octamethylcyclotetrasiloxane, tetramethylcyclotetrasiloxane, tetramethyldivinyldisiloxane In the reactor, at a temperature of 45°C and a pressure of -0.093MP a Dehydration under conditions for 1.2h; (2) Warm up the dehydrated mixture to 180°C, add potassium hydroxide silicon alkoxide catalyst, and react at a temperature of 182°C for 8h; (3) After the reaction is completed, add to the reaction Add organosilicon phosphate in proportion to neutralize for 1.8h, then raise the temperature to remove low-molecular substances, and filter to obtain methylphenyl silicone oil.

Embodiment 3

[0027] First, the components weighed in parts by weight are: 25 parts of methylphenyl mixed rings, 25 parts of octamethylcyclotetrasiloxane, 25 parts of tetramethylcyclotetrasiloxane, tetramethyldivinyl 15 parts of disiloxane, 7 parts of potassium hydroxide silicon alkoxide, 3 parts of organic silicon phosphate.

[0028] Then, prepare methylphenyl silicone oil: (1) add methylphenyl mixed ring body, octamethylcyclotetrasiloxane, tetramethylcyclotetrasiloxane, tetramethyldivinyldisiloxane In the reactor, at a temperature of 50°C and a pressure of -0.095MP a Dehydration under conditions for 1.5h; (2) Warm up the dehydrated mixture to 180°C, add potassium hydroxide silicon alkoxide catalyst, and react at a temperature of 183°C for 8h; (3) After the reaction is completed, add to the reaction Add organosilicon phosphate in proportion to neutralize for 2 hours, then raise the temperature to remove low-molecular substances, and filter to obtain methylphenyl silicone oil.

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PUM

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Abstract

The invention provides methyl phenyl silicone oil for LED (light emitting diode) potting sealant. The methyl phenyl silicone oil comprises the following components in part by weight: 20 to 30 parts of methyl phenyl cyclic mixture, 20 to 30 parts of octamethylcyclotetrasiloxane, 20 to 30 parts of tetramethylcyclotetrasiloxane, 10 to 20 parts of tetramethyl disiloxane, 5 to 9 parts of potassium hydroxide alkoxysilane and 1 to 5 parts of organic silicone phosphate. Raw materials of the methyl phenyl silicone oil are wide in source and easy to obtain, and all components are scientifically and reasonably mixed. The invention also provides a preparation method of the methyl phenyl silicone oil, an optimum synthetic technological condition is adopted, the prepared methyl phenyl silicone oil for the LED potting sealant has advantages of stable quality, good adhesive performance, high refractive rate, high transparency and the like and is particularly suitable for the industrialization.

Description

technical field [0001] The invention relates to the technical field of LED potting glue, in particular to a methylphenyl silicone oil for LED potting glue and a preparation method thereof. Background technique [0002] Light-emitting diodes, referred to as LEDs, are a type of electroluminescent solid-state light source. Due to the advantages of simple structure, long service life, small size, high brightness, energy saving and environmental protection, etc., the development is very rapid, and it is expected to replace traditional light sources such as incandescent lamps and fluorescent lamps and become the fourth generation of lighting sources. With the increase of LED brightness and output power, there are problems of discoloration and degradation, especially cycloaliphatic epoxy resins tend to turn yellow when exposed to blue light or ultraviolet light, resulting in shortened service life of LED components, so the traditional The LED potting adhesive based on epoxy resin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/395C08G77/20C08G77/08C09J183/08H01L33/56C09K3/10
Inventor 马健评
Owner 桂林健评环保节能产品开发有限公司
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