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Addition-type silicone potting adhesive room temperature adhesive active substance and its preparation method and application

A technology of silicone potting glue and addition molding, which is applied in the direction of adhesives, etc., can solve the problems of poor adhesion, low waterproof level, affecting the performance of electronic products and rapid development, etc., and achieves reliable adhesion and simple and easy preparation methods The effect of easy and convenient industrial production

Active Publication Date: 2021-12-21
广东皓明有机硅材料有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the adhesion to the shells, components, wires and other materials of electronic products is very poor, resulting in the low waterproof level of electronic products filled with addition-type silicone potting adhesives, which seriously affects the performance and rapid development of electronic products.

Method used

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  • Addition-type silicone potting adhesive room temperature adhesive active substance and its preparation method and application
  • Addition-type silicone potting adhesive room temperature adhesive active substance and its preparation method and application
  • Addition-type silicone potting adhesive room temperature adhesive active substance and its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Put 100 parts by mass of vinyltrimethoxysilane and 150 parts by mass of absolute ethanol into the reactor, lower the temperature of the material to 10°C; put in 400 parts by mass of hydroxymethyltriethoxysilane, and stir for 15 minutes; Then add 0.25 parts by mass of isopropyl titanate, after the dropwise addition, continue to stir and react for 4 hours; the temperature of the material is raised to 60°C, and the de-lowering reaction is carried out for 1 hour (vacuum degree is 0.09MPa); the addition-type silicone potting adhesive is bonded at room temperature Actives.

[0041] 2. Take 200 parts by mass of the addition-type silicone potting adhesive obtained in step 1 and cool it to 20°C, add 1000 parts by mass of toluene and 1 part by mass of isopropyl titanate under nitrogen protection, and stir for 15 minutes. The addition type silicone potting glue room temperature bonding composition is obtained.

[0042] 3. Apply the silicone potting adhesive room temperature bo...

Embodiment 2

[0044] 1. Put 100 parts by mass of vinyltrimethoxysilane and 150 parts by mass of absolute ethanol into the reactor, lower the temperature of the material to 10°C; put in 400 parts by mass of hydroxymethyltriethoxysilane, and stir for 15 minutes; Then add 0.25 parts by mass of isopropyl titanate, after the dropwise addition, continue to stir and react for 4 hours; the temperature of the material is raised to 60°C, and the de-lowering reaction is carried out for 1 hour (vacuum degree is 0.095MPa); the addition-type silicone potting adhesive is bonded at room temperature Actives.

[0045] 2. Take 400 parts by mass of the addition-type silicone encapsulant obtained in step 1 and cool the adhesive active substance at room temperature to 20°C. Add 3000 parts by mass of hexamethyldisiloxane and 10 parts by mass of tetrabutyl zirconate under nitrogen protection. part, and stirred for 15 minutes to obtain an addition-type silicone potting adhesive room temperature bonding composition....

Embodiment 3

[0048] 1. Put 100 parts by mass of vinyltrimethoxysilane and 150 parts by mass of absolute ethanol into the reactor, lower the temperature of the material to 10°C; put in 400 parts by mass of hydroxymethyltriethoxysilane, and stir for 15 minutes; Then add 0.25 parts by mass of isopropyl titanate, after the dropwise addition, continue to stir and react for 4 hours; the temperature of the material is raised to 60°C, and the de-lowering reaction (vacuum degree is 0.098MPa) is 1 hour; the addition type silicone potting adhesive is bonded at room temperature Actives.

[0049] 2. Take 300 parts by mass of the addition-type silicone encapsulant obtained in step 1 and cool the adhesive active substance at room temperature to 20°C, add 2000 parts by mass of xylene under the protection of nitrogen, 5 parts by mass of zirconate were stirred for 15 minutes to obtain an addition type silicone potting glue room temperature bonding composition.

[0050] 3. Apply the silicone potting adhesiv...

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Abstract

The invention discloses an addition-type silicone potting adhesive room-temperature adhesive active substance, a preparation method and an application thereof. An addition-type silicone potting adhesive room-temperature adhesive active substance, which has the structure shown in formula I, and is named vinyl tris(triethoxysilylmethoxy)silane. The active substance can be used to prepare the addition-type silicone potting adhesive room temperature bonding composition, and the obtained bonding composition can realize the bonding of aluminum materials, 304 stainless steel, PC plastics, and ABS under the condition of room temperature curing of the addition-type silicone potting adhesive. The adhesive properties of plastic, PET, PVC, PA plastic, silicone products, PCB and other electronic product substrates, and the adhesiveness is reliable. Debonding, meeting the IP68 waterproof level requirements of electronic products.

Description

technical field [0001] The invention belongs to the field of chemical materials, and in particular relates to an addition-type organic silicon potting adhesive room-temperature adhesive active substance and a preparation method and application thereof. Background technique [0002] Addition-type silicone potting compound has excellent properties such as high and low temperature resistance, insulation, physiological inertia, small stress, small shrinkage and expansion rate, and no small molecule precipitation. It is widely used in potting protection in the electronics industry, such as LED drive power supply, transformers , inverters, chargers and other types of electronic products, which can play the role of heat dissipation, flame retardant, insulation, waterproof and other protection. At present, the base polymers of addition-type silicone potting adhesives are vinyl silicone oil and hydrogen-containing silicone oil. These polymers have low surface energy. Organic matter ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J183/07C08G77/20
CPCC09J183/04C08G77/20
Inventor 程宪涛吴向荣莫飞王佐周东健
Owner 广东皓明有机硅材料有限公司
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