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Light release regulator for silicon release agent, and synthesis method and application thereof

A synthesis method and release agent technology, applied in the direction of coating, etc., can solve the problems of poor silicon release performance, low silicon release residual adhesion rate, etc., to improve performance, reduce release force, and small release force Effect

Inactive Publication Date: 2020-01-03
广东鼎立森新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The light release regulators commonly used in current silicone release agents are generally low-viscosity methyl silicone oil or macromolecular methyl raw rubber, but their addition makes the performance of the silicone release part poor: if it will make the silicone release The release force after aging in the molding process is relatively large (the closer the release force after aging is to the release force measured directly, the effect is the best), and the residual adhesion rate of the silicon release type is low, less than 85%.

Method used

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  • Light release regulator for silicon release agent, and synthesis method and application thereof
  • Light release regulator for silicon release agent, and synthesis method and application thereof
  • Light release regulator for silicon release agent, and synthesis method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A kind of light release conditioner for silicon release agent, its structural formula is:

[0027]

[0028] Wherein, n=1-500; m=1-200; the molecular weight range is 350-65000; the viscosity is 10-50000cs.

[0029] Specifically, it is the acid-catalyzed polymerization product of hexamethyldisiloxane, octamethylcyclotetrasiloxane and methylphenylcyclotrisiloxane.

Embodiment 2

[0031] A kind of synthetic method of the light release type conditioner that silicon release agent described in above-mentioned embodiment 1 is used, comprises the following steps:

[0032] S1. Weigh 162.38g of hexamethyldisiloxane, 3707.75g of octamethylcyclotetrasiloxane, and 1634.68g of methylphenylcyclotrisiloxane into the reaction vessel in turn, and slowly stir while stirring Add 166g of concentrated sulfuric acid, raise the temperature to 70°C, and react at a constant temperature of 70°C for 8 hours;

[0033] S2, stop heating, after cooling to room temperature, add 450g of anhydrous sodium carbonate to neutralize the remaining concentrated sulfuric acid, and neutralize for 6 hours;

[0034] S3. After desalting by filtration, reduce the filtrate to 170° C. for 2 hours under reduced pressure, and then cool and discharge to obtain the light release regulator for the silicon release agent.

Embodiment 3

[0036] A kind of application of the light release conditioner that silicon release agent described in above-mentioned embodiment 1 is used, the light release conditioner that described silicon release agent is used is applied in the formula of silicon release agent, by mass Percentage, including the following components:

[0037]

[0038] Wherein, the mole fraction of vinyl in the vinyl-terminated silicone rubber is 1.0%, and the solid content is 30%. The crosslinking agent is silicone oil with a viscosity of 20Cs and a hydrogen content of 1.60%. The platinum concentration of the catalyst is 5000PPm. The anchoring agent is selected from Dow Corning model as SL-297 adhesion additive.

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Abstract

The invention provides a light release regulator for a silicon release agent. The light release regulator is methyl phenyl silicone oil which is an acid catalytic polymerization product of hexamethyldisiloxane, octamethylcyclotetrasiloxane and 2,4,6-trimethyl-2,4,6-triphenylcyclotrisiloxane. The invention also provides a synthesis method of the light release regulator for the silicon release agent, and a formula composition applied to the silicon release agent. The silicon release agent obtained by using the light release regulator for the silicon release agent has good performance indexes: the release force is small, the release force after aging is close to the release force measured immediately, and the residual adhesion rate can reach 90% or above.

Description

technical field [0001] The invention relates to the field of silicone release agents, in particular to a light release regulator for silicon release, a synthesis method thereof, and a formula for applying the silicone release agent. Background technique [0002] The light release regulators commonly used in current silicone release agents are generally low-viscosity methyl silicone oil or macromolecular methyl raw rubber, but their addition makes the performance of the silicone release part poor: if it will make the silicone release The release force after aging in the molding process is relatively large (the closer the release force after aging is to the release force measured directly, the effect is the best), and the residual adhesion rate of the silicon release type is low, less than 85%. Contents of the invention [0003] In order to overcome the deficiencies in the prior art, the present invention proposes a light release regulator for silicon release agents, so that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/20C09D183/07C09D7/65C08G77/06C08G77/08
CPCC08G77/06C08G77/08C08G77/80C08L2205/025C08L2205/03C09D5/20C09D183/04C09D7/65C08L83/04
Inventor 钟寿增李彪黄政蔡秀
Owner 广东鼎立森新材料有限公司
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