Tackifying and reinforcing modified polysiloxane and preparation method and application thereof

A technology of polysiloxane and methyl vinyl polysiloxane, which is applied in the field of modified polysiloxane for tackifying and reinforcing and its preparation, can solve the problem of surface stickiness, insufficient adhesion of packaging materials, LED The problems such as the decrease of the light transmittance of the glue, to achieve the effect of improving the bonding strength, good light transmittance and tensile strength, and improving the bonding strength

Inactive Publication Date: 2015-07-01
SHENZHEN CAPCHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, domestic LEDs often need to add an additional tackifier due to insufficient adhesion of the packaging material. In the patent with the publication number CN103184031A and the name "a polysiloxane tackifier and its preparation method", due to the additional The use of tackifiers in the packaging glue leads to problems such as the decrease of the light transmittance of the LED glue and the surface stickiness after curing.

Method used

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  • Tackifying and reinforcing modified polysiloxane and preparation method and application thereof
  • Tackifying and reinforcing modified polysiloxane and preparation method and application thereof
  • Tackifying and reinforcing modified polysiloxane and preparation method and application thereof

Examples

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Embodiment 1

[0102]To 100 parts by mass of methyl vinyl polysiloxane, add 60 parts by mass of toluene and 2 parts by mass of tetramethyldisiloxane, after the methyl vinyl polysiloxane is dissolved, Heat up to 80°C, add 0.05 parts by mass of p-toluenesulfonic acid, stop heating and stirring after 8 hours to obtain a toluene solution of the intermediate polysiloxane product, cool to room temperature, and wash with deionized water 3 times to medium properties, put anhydrous calcium chloride into the solution of the intermediate polysiloxane product to remove the moisture in the solution. After the solution is clarified, anhydrous calcium chloride is filtered off, 100 parts by mass of toluene is added, and the intermediate polysiloxane product solution is slowly added dropwise to 7 parts of allyl glycidyl ether, 8 parts of vinyl In the mixed solution of trimethoxysilane and 0.04 parts by mass of chloroplatinic acid isopropanol solution (Pt content is 8000ppm), after reacting for 6 hours, the t...

Embodiment 2

[0105] To 100 parts by mass of methyl vinyl polysiloxane, add 80 parts by mass of toluene and 5 parts by mass of tetramethyldisiloxane, after the methyl vinyl polysiloxane is dissolved, Raise the temperature to 85°C, and add 0.1 parts by mass of phosphazene chloride, stop heating and stirring after 6 hours to obtain a toluene solution of the intermediate polysiloxane product, cool to room temperature, wash with deionized water 5 times until neutral, Anhydrous calcium chloride is put into the solution of the intermediate polysiloxane product to remove moisture from the solution. After the solution is clarified, anhydrous calcium chloride is filtered off, 200 parts by mass of toluene is added, and the intermediate polysiloxane product solution is slowly added dropwise to 5 parts by mass of γ-methacryloxypropane at 50°C. In a mixed solution of trimethoxysilane, 10 parts by mass of vinyltriethoxysilane and 0.04 parts by mass of chloroplatinic acid tetramethyldivinyldisiloxane comp...

Embodiment 3

[0108] To 100 parts by mass of methyl vinyl polysiloxane, add 100 parts by mass of toluene and 3 parts by mass of tetramethyldisiloxane, after the methyl vinyl polysiloxane is dissolved, Raise the temperature to 90°C, and add 0.06 parts by mass of Super acid, stop heating and stirring after 2 hours to obtain the toluene solution of the intermediate polysiloxane product, cool to room temperature, wash with deionized water 4 times until neutral, put anhydrous calcium chloride into the intermediate polysiloxane product solution to remove water from the solution. After the solution is clarified, anhydrous calcium chloride is filtered off, 150 parts by mass of toluene is added, and the intermediate polysiloxane product solution is slowly added dropwise to 6 parts by mass of allyl glycidyl ether, 9 parts by mass of Parts of vinyltrimethoxysilane and 0.04 parts by mass of hydrosilylation catalyst (Pt content: 8000ppm) in the mixed solution, after 4 hours of reaction, the temperatur...

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Abstract

The invention discloses a tackifying and reinforcing modified polysiloxane and a preparation method and application thereof. The modified polysiloxane is prepared from an intermediate polysiloxane product and an organic compound containing a tackifying group and a vinyl group through hydrosilylation reaction in the presence of a hydrosilylation reaction catalyst, wherein the intermediate polysiloxane product is prepared by terminating methyl vinyl polysiloxane by using a terminator and the tackifying group refers to an organic group capable of increasing adhesion to a substrate. The adhesive strength of a packaging adhesive prepared from the tackifying and reinforcing modified polysiloxane is improved greatly; in addition, other properties such as cured material hardness, light transmittance and tensile strength, are excellent.

Description

technical field [0001] The invention relates to the technical field of substrate encapsulation adhesives, in particular to the technical field of LED encapsulation adhesives, in particular to a modified polysiloxane for adhesion enhancement and reinforcement, a preparation method and application thereof. Background technique [0002] In recent years, LED (Light Emitting Diode, light-emitting diode), as a semiconductor light-emitting device, has been widely used in lighting, backlight, display and other fields due to its advantages of energy saving, long life, environmental protection, and high light efficiency. The power consumption of LED lighting is only 1 / 10 of that of traditional light sources. If LED light sources can be used instead of traditional light sources, the world's energy consumption will be greatly reduced. [0003] At present, polysiloxane has replaced traditional epoxy resin and has become the mainstream material for LED packaging. Polysiloxane has excellen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/38C09J183/07C09J183/04C09J183/05
Inventor 赵大成马子淇
Owner SHENZHEN CAPCHEM TECH
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