A kind of dissolving agent for removing cured silicone rubber and preparation method thereof

A technology of curing silicone rubber and dissolving agent, which is applied in the field of silicone rubber dissolving agent and its preparation, which can solve the problems of device influence, soaking time should not be too long, etc., and achieve the effect of non-damage degumming and high degumming efficiency

Active Publication Date: 2022-07-01
JIANGSU LOPALTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solvent used is weakly acidic, and is generally only suitable for the removal of silicone rubber on small parts such as electronic devices. The soaking time should not be too long, otherwise it will affect the device

Method used

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  • A kind of dissolving agent for removing cured silicone rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] By weight percentage, 30% ethanol, 4% sodium hydroxide, and 2% dimethyl silicone oil with a viscosity of 300 mPa.s were stirred and heated at 50° C. for 1 h, and the obtained reaction product was mixed with 58.4% of 120# solvent oil, 0.6% benzotriazole and 5% liquid paraffin are mixed and stirred evenly to obtain a silicone rubber dissolving agent.

Embodiment 2

[0018] 30% isobutanol, 4% potassium hydroxide, 2% dimethicone oil with a viscosity of 500mPa.s were stirred and heated at 50°C for 1.5h, and the obtained reaction product was mixed with 55% 200# solvent oil, 4% The benzotriazole and 5% liquid paraffin are mixed and stirred evenly to obtain the silicone rubber dissolving agent.

Embodiment 3

[0020] 60% isobutanol, 6% potassium hydroxide, 8% dimethicone oil with a viscosity of 800mPa.s were stirred and heated at 60°C for 1.5h, and the obtained reaction product was mixed with 21.5% 120# solvent oil, 4% The benzotriazole and 0.5% liquid paraffin are mixed and stirred evenly to obtain the silicone rubber dissolving agent.

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Abstract

The invention discloses a dissolving agent for removing cured silicone rubber, which comprises 30%-60% C 2 ~C 4 Monohydric alcohol or dihydric alcohol, 1% to 8% of strong alkali, 1% to 10% of dimethicone, 1% to 10% of metal slow release agent, and the balance is solvent oil. The invention also discloses a method for preparing the dissolving agent, which comprises the following steps: 2 ~C 4 Monohydric alcohol or dihydric alcohol, strong base and dimethicone are mixed, stirred and heated at 50~80℃ for 0.5~2h, and the obtained reaction product is then mixed with corresponding weight percentage of solvent oil and metal slow-release agent, to get Silicone rubber dissolving agent. The silicone rubber dissolving agent of the invention has high degumming efficiency, and the cured silicone rubber on the parts or components can be removed after soaking for 0.5 to 2 hours; the dissolving agent will not corrode the parts or elements during the soaking process, and can achieve non-damaged degumming .

Description

technical field [0001] The invention relates to a silicone rubber dissolving agent and a preparation method thereof, in particular to a dissolving agent for removing cured silicone rubber and a preparation method thereof. Background technique [0002] Silicone rubber includes high temperature vulcanized silicone rubber (HTV) and room temperature vulcanized silicone rubber (RTV). Among them, RTV can undergo cross-linking curing reaction without heating at room temperature, and vulcanized into elastomer, which is extremely convenient to use. At present, RTV is mainly used for the coating of various electronic components and electrical equipment. The encapsulation material plays the role of insulation, moisture-proof and shock-proof; as a surface protection material for semiconductor devices; it can also be used as sealing filler and elastic adhesive. [0003] Silicone rubber is a kind of widely used encapsulation glue and shock-absorbing glue. In some production or maintenanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J3/11C08J3/09C08L83/04
CPCC08J3/11C08J3/095C08J3/092C08J3/096C08J3/098C08J2383/04
Inventor 胡明冀严军表
Owner JIANGSU LOPALTECH
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