Organic silicon rubber encapsulating material for high-power LED

A technology of silicone rubber and encapsulation materials, applied in other chemical processes, electrical components, circuits, etc., can solve problems such as hardness, strength, poor service life of LEDs, little research, and unsuitable LED encapsulation

Inactive Publication Date: 2010-06-23
陈俊光
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few related studies in China
Chinese Patent Publication No. CN101381516A discloses the preparation of LED room temperature vulcanized silicone potting compound, but because of its poor hardness, strength and LED service life, it is not suitable for LED packaging

Method used

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  • Organic silicon rubber encapsulating material for high-power LED
  • Organic silicon rubber encapsulating material for high-power LED
  • Organic silicon rubber encapsulating material for high-power LED

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] Embodiment 1, the preparation of one-component methyl silicone rubber product of the present invention

[0075] Synthesis and purification of component A:

[0076] 1. Raw materials ①Octamethylcyclotetrasiloxane, referred to as D4, the purity of the middle part is about 99.9% after distillation

[0077] ② The mixed ring body (liquid) of diphenylhexamethylcyclotetraeptraepoxide and tetraphenyltetramethylcyclotetrasiloxane takes the distillate in the range of 236-256℃ / 0.6skpa, and the refractive index is between 1.49-1.53 , colorless and transparent, ready to use after steaming.

[0078] ③ Hexavinyldisiloxane (hexavinyl double-headed for short), after distillation, the purity of the middle part is more than 99.0%.

[0079] ④ Hexamethyldisiloxane (referred to as MM) is distilled to take the middle part, and the purity is above 99.2%.

[0080] *All raw materials must be used after rectification, must be distilled and used immediately, and tracked by chromatography to ensu...

Embodiment 2

[0115] Embodiment 2: the preparation of two-component methyl silicone rubber product of the present invention

[0116] Synthesis and purification of component A

[0117] 1. Raw materials:

[0118] ① 1.3-Divinyltetramethyldisiloxane, purified by distillation to obtain an intermediate purity above 99.2%;

[0119] ② Octamethyl to tetrasiloxane Jane D 4 , refined by distillation, and the purity of the middle part is above 99.2%.

[0120]2. Synthesis of component A, in the flask, after drying and dehumidification, add methyl D 4 According to this example, add 1.3-divinyltetramethyldisiloxane capping agent, heat up to 85-90°C under nitrogen, stir and mix (and vacuumize for 1 hour), and then add the equivalent of tetramethylhydroxide Tetramethylammonium hydroxide alkali gel with an ammonium content of 50ppm is reacted at 100-110° for a balanced reaction, the reaction time is 4 hours, and the reaction viscosity is kept for 1 hour until the viscosity remains unchanged, and then the...

Embodiment 3

[0145] Embodiment three: the preparation of single-component phenyl silicone rubber of the present invention

[0146] Component A is synthesized and refined

[0147] 1. Raw materials

[0148] (1) Methylcyclotetrasiloxane, referred to as D4, the purity of the middle part (removing the head and tail part) from distillation is about 99.5%

[0149] (2) Diphenylhexamethylcyclotetrasiloxane and tetraphenyltetramethylcyclotetrasiloxane ring body (liquid): Take the fraction at 256-276°C / 0.65KPA, and the refractive index is between 1.52-1.56 , a colorless transparent liquid,

[0150] (3) Hexamethyldisiloxane, referred to as MM. The middle part is taken by distillation, the purity is above 99.2%

[0151] (4) Tetramethyltetravinyl cyclotetrasiloxane, referred to as D Vi 4 , take the middle part, the purity is about 99.3%, all raw materials must be used after refining, must be steamed and used immediately to ensure its purity, no peculiar smell, metal potassium, sodium, chloride ion...

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Abstract

The invention relates to an organic silicon encapsulating material for a high-power LED and a preparation method thereof. The organic silicon encapsulating material is prepared by mixing a component A containing vinyl polysiloxanes, a silicone resin component B, a component C containing hydrogen polysiloxane, a platinum catalyst component D, a component E of catalytic inhibitor of acetylene alcohols and a tackifier component F. The obtained encapsulating silicon rubber with different refractive indexes of level 1.4, level 1.5 and the like can be used for the encapsulation of various high-power LEDs and the encapsulation of other optical application. The organic silicon rubber encapsulating material for the high-power LED takes the silicone resin component B as a filling material, which not only enables that the silicone rubber has high transparency, high strength and high light transmittance, but also improves the temperature resistance, the yellowing resistance, and the durability of the high light transmittance of high-power LED products. The organic silicon rubber encapsulating material for the high-power LED can be prepared into two encapsulating forms of a single component and bi-component, which improves the adaptability and the encapsulating efficiency for encapsulating equipment and process procedures, and has the characteristics of reduced cost and convenient use.

Description

(1) Technical field [0001] The invention relates to a packaging material for high-power LEDs. Specifically, it refers to a high-power LED silicone rubber packaging material and a preparation method thereof. (2) Background technology [0002] Ultra-high brightness light-emitting diode (LIGHE EMITTING DIODE referred to as LED) is an electroluminescent solid-state light source device. It has the advantages of power saving, environmental protection, simple structure, small size, high brightness and long service life. At present, high-power LED production has begun to develop rapidly. The LED uses potting glue to connect the base material, electrodes, leads, housing, etc. into a whole. Therefore, the potting material must have very strict optical properties (light transmission retention, high refractive index); physical and mechanical properties (higher hardness, moderate elasticity, and thermal shock resistance); chemical properties (no yellowing) , no cracking reaction and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L83/07C08L83/05C09K3/10H01L33/56
Inventor 陈俊光
Owner 陈俊光
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