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Methyl hydrogen silicone oil and application

A technology of methyl hydrogen-containing silicone oil and methyl hydrogen cyclosiloxane, which is applied in the direction of adhesives, etc., can solve the problems of reducing the light transmittance of the encapsulation adhesive, reducing the efficiency of LED lights, and the price of the tackifier, etc. Quantity of materials, good storage stability, and the effect of enhancing bonding properties

Inactive Publication Date: 2017-09-15
ZHEJIANG FORST NEW MATERIAL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Adding a tackifier to the packaging adhesive may cause poor compatibility between the tackifier and the glue system, which will reduce the light transmittance of the packaging adhesive and further reduce the light efficiency of the LED lamp; and the tackifier is expensive , basically the price per kilogram is about 1,000 yuan; at the same time, the tackifier added in the packaging glue is only a physical mixture, and a small amount of tackifier will volatilize in the later stage of the cured and encapsulated LED lamp, reducing the bonding strength, and there will be Risk of fogging the inner wall of the LED lamp

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A kind of methyl hydrogen-containing silicone oil for LED packaging glue, the preparation process is as follows:

[0026] (1) Add 20 parts by mass of vinyltrimethoxysilane and 0.5 parts by mass of platinum catalyst into the reaction device for stirring, and at the same time add 80 parts by mass of trimethyltrihydrocyclotrisiloxane dropwise. Raise the temperature to 100°C per minute, react for 2 hours, remove and purify by distillation under reduced pressure to obtain modified methylhydrogencyclosiloxane.

[0027] (2) Add 50 parts by mass of modified methylhydrogencyclosiloxane and 100 parts by mass of octamethylcyclotetrasiloxane to the reaction device, vacuum dehydrate at 60°C for 1 hour, and then add 5 parts by mass of Parts of tetramethyldisiloxane, 5 parts by mass of sulfonic acid-type cation exchange resin, ring-opening polymerization for 3 hours at 120°C under a nitrogen atmosphere, cooled to room temperature, and filtered to remove the acidic catalyst. The filtr...

Embodiment 2

[0029] A kind of methyl hydrogen-containing silicone oil for LED packaging glue, the preparation process is as follows:

[0030] (1) 10 mass parts of vinyltriethoxysilane and 0.1 mass parts of platinum catalyst are added to the reaction device and stirred, while 40 mass parts of tetramethyltetrahydrocyclotetrasiloxane are added dropwise. After the addition, 2 °C / min to raise the temperature to 60 °C, react for 5 hours, and remove and purify by vacuum distillation to obtain modified methylhydrogencyclosiloxane.

[0031] (2) Add 10 parts by mass of modified methylhydrogencyclosiloxane and 50 parts by mass of decamethylcyclopentasiloxane to the reaction device, vacuum dehydrate at 50°C for 2 hours, and then add 2 parts by mass of Parts of hexamethyldisiloxane, 2 parts by mass of SO 4 2- / TiO 2 , ring-opening polymerization at 90° C. and nitrogen atmosphere for 6 h, cooled to room temperature, and filtered to remove the acidic catalyst. The filtrate was heated to 160°C, and th...

Embodiment 3

[0033] A kind of methyl hydrogen-containing silicone oil for LED packaging glue, the preparation process is as follows:

[0034] (1) Add 16 parts by mass of methacryloxypropyltrimethoxysilane and 0.3 parts by mass of platinum catalyst into the reaction device for stirring, and simultaneously add 60 parts by mass of methylhydrocyclosiloxane mixed ring body dropwise, drop After the addition, the temperature was raised to 90° C. at 2° C. / min, reacted for 3 hours, and removed by distillation under reduced pressure for purification to obtain modified methylhydrocyclosiloxane.

[0035] (2) Add 15 parts by mass of modified methylhydrogen cyclosiloxane and 80 parts by mass of methyl cyclosiloxane mixed ring to the reaction device, vacuum dehydrate at 60°C for 1 hour, and add 4 Parts by mass of tetramethyldisiloxane, 3 parts by mass of acidic SO 4 2- / ZrO 2 , ring-opening polymerization at 120° C. and nitrogen atmosphere for 3 h, cooled to room temperature, and filtered to remove th...

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PUM

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Abstract

The invention discloses methyl hydrogen silicone oil and application. According to the methyl hydrogen silicone oil, methylhydracyclosiloxane and a vinyl-containing silane coupling agent are under the action of a platinum catalyst to obtain modified methylhydracyclosiloxane, furthermore, methyl cyclosiloxane and an end-capping reagent are subjected to ring opening polymerization for a period of time under the action of an acid catalyst, then, the catalyst is removed through filtration, low-boiling-point substance is removed through reduced pressure distillation to obtain the methyl hydrogen silicone oil. The methyl hydrogen silicone oil prepared by the invention is used for organic silicon package resin, not only can act as a cross-linking agent, but also can act as a thickening agent, and improves the bonding performance of the package resin specific to a base material.

Description

technical field [0001] The invention relates to the field of silicone encapsulation glue, in particular to methyl hydrogen-containing silicone oil for LED encapsulation glue and its application. Background technique [0002] Silicone polymer materials are mainly composed of silicon-oxygen bonds, and silicon atoms can introduce organic functional groups. This material with both organic and inorganic structures has good chemical stability and is widely used in the fields of national economy and national defense. Silicone materials for LED packaging are mainly made of vinyl silicone oil, vinyl silicone resin, and hydrogen-containing silicone oil. Among them, hydrogen-containing silicone oil is used as a cross-linking agent, which is crucial to the performance of the encapsulant. [0003] At present, the main preparation methods of hydrogen-containing silicone oil include halosilane hydrolysis, telomerization and ring-opening copolymerization. Hydrolysis and telomerization of c...

Claims

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Application Information

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IPC IPC(8): C08G77/12C08G77/20C08G77/06C09J183/05C09J183/07
Inventor 韩志远高传花张利安江昊林天翼
Owner ZHEJIANG FORST NEW MATERIAL RES INST CO LTD
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