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Transparent organic silicon LED light bar pouring sealant and preparation method thereof

A technology of LED light strips and silicone, applied in the direction of adhesives, adhesive additives, non-polymer adhesive additives, etc., can solve the problems of turbidity during storage, affecting the light transmittance of products, and insufficient adhesiveness, etc. No performance drop, avoid colloid yellowing and transparency drop, ensure the effect of adhesion and water resistance

Active Publication Date: 2014-09-03
深圳市百丽春粘胶实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patent application CN101787211A provides a high-transparency, high-strength room-temperature-vulcanized silicone electronic potting compound. The single use of γ-aminopropyl triethoxysilane as a tackifier has the disadvantage of insufficient adhesion. In addition, γ-aminopropyl Triethoxysilane can improve the adhesion of condensation-type products, but the coupling agent is a self-catalyzed coupling agent, which is alkaline in aqueous solution and is almost completely hydrolyzed when exposed to water. Ammonia can catalyze silanols to accelerate polycondensation into Insoluble polymer, so that component B becomes turbid during storage, which affects the light transmittance of the product, and the products using this coupling agent are not resistant to yellowing in the later stage

Method used

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  • Transparent organic silicon LED light bar pouring sealant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] A transparent organic silicon LED light strip potting glue, prepared by the following method:

[0063] 1) Mix 70 parts of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 1500mPa.s, 30 parts of α, ω-dimethoxysilyl polydimethylsiloxane with a viscosity of 50mPa.s Add alkanes, 10 parts of 100mPa.s MDT silicone oil and 10 parts of methyl MQ resin into the reaction kettle and mix evenly, then start to vacuumize and raise the temperature. hour, then cooled to normal temperature to obtain A component;

[0064] 2) Mix 30 parts of γ-aminopropyltrimethoxysilane, 40 parts of n-n-butyl-γ-aminopropyltrimethoxysilane and 30 parts of MDT silicone oil at 60°C for 4 hours under nitrogen protection, get tackifier;

[0065] 3) Add 40 parts of methyltriethoxysilane, 10 parts of methyl MQ resin, and 10 parts of MDT silicone oil into the reaction kettle, mix and stir at 80°C for 3 hours under the protection of nitrogen, and cool to normal temperature to obtain the reaction product; ...

Embodiment 2

[0070] A transparent organic silicon LED light strip potting glue, prepared by the following method:

[0071] 1) Mix 70 parts of α, ω-dihydroxypolydimethylphenylsiloxane with a viscosity of 1500mPa.s, 30 parts of α, ω-triethoxysilyl polydimethylsiloxane with a viscosity of 100mPa.s Add alkanes, 10 parts of 80mPa.s hydroxyl silicone oil and 20 parts of vinyl MQ resin into the reaction kettle and mix evenly, then start to vacuumize and raise the temperature. hour, then cooled to normal temperature to obtain A component;

[0072] 2) 40 parts of bis(trimethoxysilylpropyl) ammonia, 40 parts of n-n-butyl-γ-aminopropyltrimethoxysilane and 20 parts of 1,3,5-tris(trimethoxysilylpropyl) Polyisocyanate, under the protection of nitrogen, mixed and stirred at 40 ° C for 5 hours to obtain a tackifier;

[0073] 3) Add 10 parts of vinyltriethoxysilane, 20 parts of vinyl resin, and 20 parts of MDT silicone oil into the reaction kettle, mix and stir at 100°C for 3 hours under the protection o...

Embodiment 3

[0078] A transparent organic silicon LED light strip potting glue, prepared by the following method:

[0079] 1) Mix 70 parts of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 500mPa.s, 30 parts of α, ω-dihydroxypolydimethylsiloxane with a viscosity of 10000mPa.s, 10 parts of 100mPa .s of MDT silicone oil and 20 parts of methyl MTQ resin, put into the reaction kettle and mix evenly, then start to vacuumize and raise the temperature. At room temperature, A component was obtained.

[0080] 2) 50 parts of bis(trimethoxysilylpropyl)ammonia, 40 parts of n-n-butyl-γ-aminopropyltrimethoxysilane and 10 parts of hexamethyldisilazane were placed in the Mix and stir at 80°C for 3 hours to obtain a tackifier;

[0081] 3) Add 2 parts of vinyltriethoxysilane, 3 parts of polymethyltrimethoxysilane, 20 parts of methyl MQ resin, and 15 parts of MDT silicone oil into the reaction kettle, and mix and stir at 100°C for 3 hour, cooled to normal temperature to obtain the reaction product...

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Abstract

The invention discloses a transparent organic silicon LED light bar pouring sealant and a preparation method thereof. The pouring sealant is prepared from a component (A) and a component (B), wherein the component (A) comprises the following components in parts by weight: 100 parts of polysiloxane base polymer, 0.1-100 parts of alpha, omega-alkoxy capped polydimethylsiloxane, 0-80 parts of reinforcing resin and 0-40 parts of silicone oil; the component (B) comprises the following components by weight: 100 parts of alpha, omega-alkoxy capped polydimethylsiloxane, 0-100 parts of silicone oil, 0-50 parts of reinforcing resin, 0-50 parts of a crosslinking agent, 0.5-15 parts of a thickening agent and 0.001-3 parts of a catalyst. The pouring sealant is a product with high light transmittance and strength, excellent adhesion and yellowing resistance, quick deep solidification and stable storage, can be used for pouring electronic appliances, can fulfill places requiring high light transmittance and high strength. The preparation method is simple, adjustable in solidification time and convenient to operate.

Description

technical field [0001] The invention belongs to room temperature vulcanization condensation type silicone potting glue, relates to a transparent silicone LED light strip potting glue and a preparation method thereof, which is used for potting and sealing of electronic appliances, and is especially suitable for occasions requiring high light transmittance and high strength , such as LED lamp strip potting, etc. Background technique [0002] As the world's most attention-grabbing new-generation light source, LED is known as the most promising green lighting source in the 21st century because of its advantages such as high brightness, low heat, long life, non-toxicity, and recyclability. Currently, LED lighting and large-screen LED backlighting are the two most potential emerging markets in the field of LED applications, especially LED lighting, which is closely related to people's livelihood, has been mentioned to the height of government policy support because of energy savin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J183/06C09J183/04C09J11/06
Inventor 潘自鼎
Owner 深圳市百丽春粘胶实业有限公司
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