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A kind of organosilicon material and its preparation method and application

An organic silicon and nano-silicon carbide technology, applied in the field of materials, can solve the problems of poor visual effect, inability to meet the needs of use, limited weather resistance and heat dissipation.

Active Publication Date: 2022-05-20
新纶光电材料(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the embodiments of the present invention is to provide a silicone material, aiming at solving the problems that existing silicone potting compounds have poor visual effects, limited weather resistance and heat dissipation, and cannot meet the needs of use

Method used

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  • A kind of organosilicon material and its preparation method and application
  • A kind of organosilicon material and its preparation method and application
  • A kind of organosilicon material and its preparation method and application

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preparation example Construction

[0028] The embodiment of the present invention also provides a preparation method of the organosilicon material, comprising:

[0029] The modified nano-silicon carbide is added into the organic silicon mixture in an amount of 3-8% by weight, subjected to planetary dispersion and mixing, and degassed to obtain the product. The dispersing and defoaming processes are conventional means, and will not be described in detail here.

[0030] The embodiment of the present invention also provides an application of the organic silicon material in an outdoor brightening screen.

[0031] In the embodiment of the present invention, according to the construction requirements of the LED lighting screen, the screen body and the curtain wall glass can be pre-laminated and assembled using the method of flat scraping / spraying, or the screen body can be assembled on the completed curtain wall After four weeks of pre-curing, it is then poured into the fit.

Embodiment 1

[0034] The nano-silicon carbide powder body that 2kg surface coats silicon dioxide film imports in the fluidized bed, then adds the tetramethyldivinyl disilazane of 40g, blows into compressed air (nitrogen) according to the flow velocity of 30mL / min as The carrier gas is rapidly heated to 150°C, the boiling effect is partial boiling, and the reaction is carried out for 3 hours, then the carrier gas is stopped, and the gas inside is evacuated to obtain the modified nano-silicon carbide 1.

[0035] The modified nano-silicon carbide 1 is added to the organic silicon mixture according to the addition amount of 3% (the organic silicon mixture is formed by directly mixing the raw materials in the following parts by weight: 65 parts of vinyl silicone oil, 15 parts of hydrogen-containing silicone oil, 7 parts of long-chain alkyl silicone oil and 10 parts of vinyl silicone resin), after planetary dispersion mixing, defoaming and packaging, to obtain.

Embodiment 2

[0037] Introduce 2kg of nano-silicon carbide powder coated with a silicon dioxide film on the surface into the fluidized bed, then add 40g of tetramethyldivinyldisilazane, and blow into compressed air (argon) at a flow rate of 70mL / min As a carrier gas, it is rapidly heated to 170°C, the boiling effect is convective boiling, and the reaction is carried out for 4 hours, then the carrier gas is stopped, and the gas inside is evacuated to obtain the modified nano-silicon carbide 2.

[0038] The modified nano-silicon carbide 2 is added to the organic silicon mixture according to the addition amount of 5% (the organic silicon mixture is formed by directly mixing the raw materials in the following parts by weight: 65 parts of vinyl silicone oil, 15 parts of hydrogen-containing silicone oil, 7 parts of long-chain alkyl silicone oil and 8 parts of vinyl silicone resin), after planetary dispersion mixing, defoaming and packaging, to obtain.

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Abstract

The present invention is applicable to the field of material technology, and provides an organosilicon material and its preparation method and application. The organosilicon material is prepared by adding modified nano-silicon carbide to an organosilicon mixture; wherein, the modified Nano-silicon carbide is obtained by modifying the surface of nano-silicon carbide coated with silicon dioxide film by coupling agent. The refractive index of the silicone material provided by the invention is close to that of the screen body and the curtain wall, which not only ensures the transparency of the material, but also improves the thermal conductivity and weather resistance of the material. The silicone material is used to bond the screen body and the curtain wall, and then cured The light transmittance of the subsequent adhesive layer is > 95%, and there will be no yellowing after aging for 1000 hours under the conditions of 85% RH and 85 ° C, and no cracking and yellowing will occur after 1000 cycles of cold and heat shock at -40 ° C ~ 80 ° C Change, Qsun test 500h without cracking, embrittlement and yellowing phenomenon, can also reduce the LED junction temperature in the screen from the original 70 ℃ to 56 ~ 60 ℃, to meet the needs of use.

Description

technical field [0001] The invention belongs to the technical field of materials, and in particular relates to an organosilicon material and its preparation method and application. Background technique [0002] The development of LED display technology has made the current outdoor lighting projects more and more diverse. Nano screens, diamond screens and flexible screens are emerging in an endless stream. However, it is necessary to combine these various screens to form exquisite display patterns. There are higher requirements and there are many factors to consider. [0003] Due to the particularity of the outdoor LED display environment, silicone potting glue and epoxy resin are generally used. The glue used for outdoor LED displays should have good heat dissipation, high temperature resistance, not easy to yellow, and not easy to crack. Therefore, outdoor LED screens are generally dominated by two-component silicone potting adhesives, and epoxy resins with poor weather re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/07C09J183/05C09J183/04C09J11/04
CPCC09J183/04C09J11/04C08K2201/011C08L2205/035C08L2205/025C08L2205/04C08L2201/10C08L2201/08C08L2312/00C08L83/04C08K9/10C08K9/06C08K3/34
Inventor 张利利李志才黎鹏
Owner 新纶光电材料(深圳)有限公司
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