One-component RTV silicone sealing material for LED lamp and preparation method thereof

A technology of LED lamps and vulcanized silicone, applied in the directions of adhesive additives, non-polymer adhesive additives, polymer adhesive additives, etc. problems such as decline, to achieve the effect of excellent yellowing resistance, excellent adhesion, and improved adhesion

Active Publication Date: 2018-08-14
GUANGZHOU BAIYUN CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nanda series de-ethanol-based adhesives are weakly alkaline during curing, which will cause corrosion and cracking of PC materials, and the bonding force will decrease under high temperature or high-temperature and high-humidity conditions, resulting in severe or debonding; Weak alkalinity will cause corrosion and cracking of PC materials, and corrosion of copper substrates will cause damage to electronic components; a small amount of titanate is demethanol type, with short storage period and unstable adhesion, which will affect the blackening or light decay of LED lamp beads

Method used

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  • One-component RTV silicone sealing material for LED lamp and preparation method thereof
  • One-component RTV silicone sealing material for LED lamp and preparation method thereof
  • One-component RTV silicone sealing material for LED lamp and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] A one-component room temperature vulcanizing silicone sealant for LED lamps, the raw materials of which are composed of:

[0035]

[0036] The preparation method of the above-mentioned one-component room temperature vulcanizing silicone sealant for LED lamps in this embodiment, the steps are as follows:

[0037] Add the α,ω-bis(trimethoxysiloxy)polydimethylsiloxane and the active nano-calcium carbonate whose surface has been treated with hard fatty acid or castor oil into the kneader. Stir for 2 hours under the condition of vacuum degree of -0.095MPa, remove the moisture in the raw material under high temperature vacuum, and cool to room temperature to obtain a base material with uniform appearance;

[0038] Add the prepared base material, long-chain methyl silicone oil, and a mixture of polymethyltrimethoxysilane and methyltrimethoxysilane to the planetary machine, stir and react for 0.5h under nitrogen protection, and then add colorless and transparent titanic acid...

Embodiment 2

[0040] A one-component room temperature vulcanizing silicone sealant for LED lamps, the raw materials of which are composed of:

[0041]

[0042] The preparation method of the above-mentioned one-component room temperature vulcanizing silicone sealant for LED lamps in this embodiment, the steps are as follows:

[0043] Add the α,ω-bis(trimethoxysiloxy)polydimethylsiloxane and the active nano-calcium carbonate whose surface has been treated with hard fatty acid or castor oil into the kneader. Stir for 2 hours under the condition of vacuum degree of -0.095MPa, remove the moisture in the raw material under high temperature vacuum, and cool to room temperature to obtain a base material with uniform appearance;

[0044] Add the prepared base material, long-chain methyl silicone oil, and a mixture of polymethyltrimethoxysilane and methyltrimethoxysilane to the planetary machine, stir and react for 0.5h under nitrogen protection, and then add colorless and transparent titanic acid...

Embodiment 3

[0046] A one-component room temperature vulcanizing silicone sealant for LED lamps, the raw materials of which are composed of:

[0047]

[0048] The preparation method of the above-mentioned one-component room temperature vulcanizing silicone sealant for LED lamps in this embodiment, the steps are as follows:

[0049] Add the α,ω-bis(trimethoxysiloxy)polydimethylsiloxane and the active nano-calcium carbonate whose surface has been treated with hard fatty acid or castor oil into the kneader. Stir for 2 hours under the condition of vacuum degree of -0.095MPa, remove the moisture in the raw material under high temperature vacuum, and cool to room temperature to obtain a base material with uniform appearance;

[0050] Add the prepared base material, long-chain methyl silicone oil, and a mixture of polymethyltrimethoxysilane and methyltrimethoxysilane to the planetary machine, stir and react for 0.5h under nitrogen protection, and then add colorless and transparent titanic acid...

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Abstract

The invention relates to a single-component RTV (room temperature vulcanization) silicone sealing material for an LED lamp and a preparation method of the single-component RTV silicone sealing material. The single-component RTV silicone sealing material comprises raw materials in parts by weight as follows: 100 parts of alpha, omega-bis(trimethoxysilyloxy) polydimethylsiloxane, 100-120 parts of reinforcing filler, 1-10 parts of a plasticizer, 3-7 parts of a cross-linking agent, 1-3 parts of a catalyst and 1-5 parts of an adhesion promoter. The single-component RTV silicone sealing material for the LED lamp has excellent adhesive property, high temperature and low temperature resistance, high temperature and high humidity resistance, yellowing resistance, low volatile matter content and no sulfur and halogen, and can provide a better adhesion solution for LED lamp assembly such as adhesive fixation of a PC (polycarbonate) bulb and a lamp holder and adhesive fixation of an LED light bar and a lamp tube.

Description

technical field [0001] The invention relates to the field of sealing materials, in particular to a one-component room temperature vulcanized silicone sealing material for LED lamps and a preparation method thereof. Background technique [0002] The power consumption of ultra-high brightness light-emitting diodes (LEDs) is only 1 / 10 of traditional light sources. Its high efficiency, energy saving, small size, and long life are widely used in industrial equipment, instruments, traffic lights, automobiles, backlights, etc. Special lighting field. With the continuous development of science and technology and the further improvement of LED lamp technology, LED light sources have gradually replaced incandescent lamps and other lighting sources, becoming the fourth generation of lighting sources. Compared with traditional lamps with the same efficiency, the cost of LED lighting fixtures continues to decrease, making the full life cycle costs of LED bulb lamps, LED spotlights, LED ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/06C09J183/04C09J11/04C09J11/06C09J11/08
CPCC08K2201/003C08K2201/011C08L2201/08C08L2201/22C08L2205/02C08L2205/025C08L2205/03C08L2312/08C09J11/04C09J11/06C09J11/08C09J183/06C08L83/04C08K13/06C08K9/04C08K2003/265C08K5/5419C08K5/10
Inventor 张震宇陈何国陈思斌阳习春
Owner GUANGZHOU BAIYUN CHEM IND
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