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High-refraction-index boron-containing organic silicon tackifier and preparation method thereof

A technology of silicone tackifier and high refractive index, which is applied in the direction of polymer adhesive additives, adhesives, adhesive additives, etc., can solve the problem of weak adhesion of phthalamide and achieve good compatibility , good repeatability and controllability, mild reaction conditions

Active Publication Date: 2019-05-31
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The tackifier solves the problem of weak adhesion of addition-type silicone rubber to polyphthalamide (PPA)

Method used

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  • High-refraction-index boron-containing organic silicon tackifier and preparation method thereof

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Comparison scheme
Effect test

Embodiment 1

[0034] This embodiment provides a high refractive index boron-containing silicone adhesion promoter and a preparation method thereof.

[0035] (1) Get 18.22g methylphenyldimethoxysilane, 13.22g vinylmethyldimethoxysilane and 43.21g deionized water and join in the 250ml there-necked flask that magnetic stirring and temperature controller are housed, then Add acidic cation exchange resin accounting for 1% mass fraction of the total reactants and react at 85° C. for 2 hours. After the reaction is over, filter the product under reduced pressure to remove the acidic cation exchange resin, transfer the filtrate into a separatory funnel, add water to neutralize it, let it stand for 30 minutes, and take the oily liquid in the lower layer. Moisture was distilled off under reduced pressure.

[0036] (2) The above-mentioned purified product is added dropwise with 23.62g γ-glycidyloxypropyltrimethoxysilane, 11.72gγ-methacryloxypropyltrimethoxysilane and 18.80g tripropyl borate Add the e...

Embodiment 2

[0038] This embodiment provides a high refractive index boron-containing silicone adhesion promoter and a preparation method thereof.

[0039] (1) Get 18.22g methylphenyldimethoxysilane, 13.22g vinylmethyldimethoxysilane and 43.21g deionized water and join in the 250ml there-necked flask that magnetic stirring and temperature controller are housed, then Add acidic cation exchange resin accounting for 1% mass fraction of the total reactants and react at 85° C. for 2 hours. After the reaction is over, filter the product under reduced pressure to remove the acidic cation exchange resin, transfer the filtrate into a separatory funnel, add water to neutralize it, let it stand for 30 minutes, and take the oily liquid in the lower layer. Moisture was distilled off under reduced pressure.

[0040] (2) The above-mentioned purified product is added dropwise with 18.89g γ-glycidyl etheroxypropyl trimethoxysilane, 18.75g γ-methacryloxypropyl trimethoxysilane and 15.05g tripropyl borate ...

Embodiment 3

[0042] This embodiment provides a high refractive index boron-containing silicone adhesion promoter and a preparation method thereof.

[0043] (1) Get 18.22g methylphenyldimethoxysilane, 13.22g vinylmethyldimethoxysilane and 43.21g deionized water and join in the 250ml there-necked flask that magnetic stirring and temperature controller are housed, then Add acidic cation exchange resin accounting for 1% mass fraction of the total reactants and react at 85° C. for 2 hours. After the reaction is over, filter the product under reduced pressure to remove the acidic cation exchange resin, transfer the filtrate into a separatory funnel, add water to neutralize it, let it stand for 30 minutes, and take the oily liquid in the lower layer. Moisture was distilled off under reduced pressure.

[0044] (2) Add the above-mentioned purified product with 24.84g γ-glycidyloxypropylmethyldiethoxysilane, 26.04gγ-methacryloxypropylmethyldiethoxysilane in a dropwise manner Mix with 23.02g tribut...

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Abstract

The invention belongs to the field of organic silicon rubber additives and particularly relates to a high-refraction-index boron-containing organic silicon tackifier and a preparation method thereof.The tackifier is high in silicon rubber compatibility, catalyst poisoning is avoided, boron atoms can be attracted by electron cloud on phenyl in PPA (polyphthalamide) serving as an adhered base material, and adhesion between silicon rubber and PPA is improved. A preparation process is simple, high repeatability and controllability are realized, an adopted catalyst can be easily removed through reduced-pressure suction filtration, reaction conditions are mild, consumption of organic solvents in a reaction process is avoided, and industrialization can be easily realized. By changing of reactionconditions and a reactant ratio, viscosity of the organic silicon tackifier is reduced to 56.8-73.6mPa s while the refraction index is up to 1.5078-1.5203, and the organic silicon tackifier is suitable for high-refraction-index addition type organic silicon rubber.

Description

technical field [0001] The invention belongs to the field of silicone rubber additives, and in particular relates to a high-refractive-index boron-containing silicone tackifier and a preparation method thereof. Background technique [0002] Addition-type liquid silicone rubber is a type of silicone product that has developed rapidly in recent years, has high grades, high product technology content, and high added value. This type of product has the characteristics of excellent weather resistance and electrical insulation, high production efficiency, and low overall cost. At present, it has been more and more widely used in electronic appliances, machinery, automobiles, construction and other industries. However, since the molecule itself is non-polar, addition-type silicone rubber has poor adhesion when used as potting, coating, and insert injection molding materials. At present, there are three main methods to improve the adhesion between silicone rubber and various mater...

Claims

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Application Information

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IPC IPC(8): C08G77/398C08G77/16C08G77/20C09J183/07C09J183/05C09J11/08
Inventor 潘朝群黄丙生
Owner SOUTH CHINA UNIV OF TECH
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