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Preparation method of vinyl silicone oil

A technology of vinyl silicone oil and vinyl ring body, which is applied in the field of preparation of vinyl silicone oil, can solve the problems of poor wear resistance, low hardness of potting glue, influence on use, etc., and achieve the effect of improving wear resistance and hardness

Active Publication Date: 2013-12-25
兆舜科技(广东)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] When the vinyl silicone oil prepared by the preparation method of vinyl silicone oil disclosed in the prior art is used for potting glue, the hardness of the potting glue is low and the wear resistance is poor, which greatly affects its use.

Method used

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  • Preparation method of vinyl silicone oil
  • Preparation method of vinyl silicone oil
  • Preparation method of vinyl silicone oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A preparation method of vinyl silicone oil, said method comprising the following raw materials in parts by mass:

[0042]

[0043] The method comprises the steps of:

[0044]Stir 800 parts of octamethylcyclotetrasiloxane in the reaction kettle, add 1 part of basic catalyst and stir in the above reaction kettle, and raise the temperature to 60°C for 1 hour at constant temperature and vacuum, add 0.5 parts of capping agent above In the reaction kettle, stir at a constant temperature of 60°C for 10 minutes, then add 1 part of vinyl ring body to the above reaction kettle, the vinyl ring body is added within 5 minutes, raise the temperature to 90°C and keep it at a constant temperature for 6 hours, then raise the temperature to 150°C Keep it for 1 hour and then raise the temperature to remove low boiling matter until no low molecular weight flows out to obtain vinyl silicone oil.

Embodiment 2

[0046] A preparation method of vinyl silicone oil, said method comprising the following raw materials in parts by mass:

[0047]

[0048] Stir 800 parts of octamethylcyclotetrasiloxane in the reaction kettle, add 20 parts of basic catalyst and stir in the above reaction kettle, and raise the temperature to 70°C for 0.5 hours at a constant temperature and vacuum, add 20 parts of vinyl capping agent In the reaction kettle, stir at a constant temperature of 70°C for 5 minutes, then add 50 parts of vinyl rings to the above reaction kettle, add the vinyl rings within 10 minutes, raise the temperature to 100°C and keep it at a constant temperature for 4 hours, then raise the temperature to Keep at 160°C for 0.5 hours, then raise the temperature to remove low boiling substances until no low molecules flow out to obtain vinyl silicone oil.

Embodiment 3

[0050] A preparation method of vinyl silicone oil, said method comprising the following raw materials in parts by mass:

[0051]

[0052] Stir 800 parts of octamethylcyclotetrasiloxane in the reaction kettle, add 10 parts of basic catalyst and stir in the above reaction kettle, and raise the temperature to 65°C for 0.7 hours at a constant temperature and vacuum, add 10 parts of vinyl capping agent In the reaction kettle, stir at a constant temperature of 65°C for 7 minutes, then add 25 parts of vinyl rings to the above reaction kettle, raise the temperature to 95°C and keep it at a constant temperature for 5 hours, then raise the temperature to 155°C and keep it for 0.8 hours, then raise the temperature to remove Low boiling matter until no low molecular weight flows out, and vinyl silicone oil is obtained.

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Abstract

The invention relates to a preparation method of vinyl silicone oil, which comprises the following steps: adding 800 parts of octamethylcyclotetrasiloxane into a reaction kettle, stirring, adding 1-20 parts of alkaline catalyst into the reaction kettle, stirring, heating to 60-70 DEG C, keeping the temperature constant in a vacuum for 0.5-1 hour, adding 0.5-20 parts of vinyl terminating agent into the reaction kettle, stirring at the constant temperature of 60-70 DEG C for 5-10 minutes, adding 1-50 parts of vinyl cycle into the reaction kettle, stirring, heating to 90-100 DEG C, keeping the temperature constant for 4-6 hours, heating to 150-160 DEG C, keeping the temperature constant for 0.5-1 hour, and heating to remove low-boiling-point substances in vacuum until no micromolecules flow out, thereby obtaining the vinyl silicone oil. The vinyl silicone oil prepared by the method is used for a potting adhesive, and can enhance the wear resistance and hardness of the potting adhesive.

Description

technical field [0001] The invention relates to a preparation method of vinyl silicone oil. Background technique [0002] Potting glue, also known as electronic glue, is a broad term used for bonding, sealing, potting and coating protection of electronic components. The potting glue is liquid before it is cured and has fluidity. The viscosity of the glue varies according to the material, performance and production process of the product. Only when the potting glue is fully cured can its use value be realized. After curing, it can play the role of waterproof, moisture-proof, dust-proof, insulation, heat conduction, confidentiality, corrosion resistance, temperature resistance and shock resistance. There are many types of electronic potting adhesives. From the type of material, the most common types are mainly three types, namely epoxy resin potting adhesive, silicone resin potting adhesive, and polyurethane potting adhesive. When using silicone gel for potting, no low molec...

Claims

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Application Information

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IPC IPC(8): C08G77/20C08G77/04C08L83/07
Inventor 黄安友陈芳李柯莲
Owner 兆舜科技(广东)有限公司
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