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Epoxy organic silicon resin and preparation method thereof

A technology of epoxy silicone and resin, which is applied in the field of polymer materials, can solve the problems such as the influence of light transmission modification and low refractive index, and achieve the effect of remarkable technological progress, simple preparation method and mild reaction conditions

Inactive Publication Date: 2015-06-03
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned technical problems in the prior art, the present invention provides a kind of epoxy silicone resin and its preparation method, and described this epoxy silicone resin and its preparation method solve the problem of epoxy resin prepared in the prior art. Silicone resin has technical problems such as low refractive index (≤1.5), light transmittance greatly affected by modification, etc.

Method used

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  • Epoxy organic silicon resin and preparation method thereof
  • Epoxy organic silicon resin and preparation method thereof
  • Epoxy organic silicon resin and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] A preparation method of epoxy silicone resin specifically includes the following steps:

[0029] (1) Preparation of cyclotetrasiloxane containing epoxycyclohexane group

[0030] In a nitrogen atmosphere, 100 parts by weight of 1,3,5,7-tetramethylcyclotetrasiloxane and 206 parts by weight of 4-vinylepoxycyclohexane were added to a stirrer, condenser, constant Into a 500ml four-necked flask with a pressure funnel and a thermometer, 100 parts by weight of toluene, 0.001 parts by weight of chloroplatinic acid-isopropanol solution, and 0.001 parts by weight of 4-methoxyphenol were added at the same time; then the temperature was raised to 80°C and reacted for 2h, The reaction mixture was distilled under reduced pressure at 150° C. under -0.096 MPa to remove the solvent and residual low boilers to obtain a liquid with a viscosity of 3000 mPa.s, that is, a cyclotetrasiloxane containing an epoxycyclohexane group.

[0031] The cyclotetrasiloxane containing epoxycyclohexane group obtai...

Embodiment 2

[0040] A preparation method of epoxy silicone resin specifically includes the following steps:

[0041] (1) Preparation of cyclotetrasiloxane containing epoxycyclohexane group

[0042] In a nitrogen atmosphere, 100 parts by weight of 1,3,5,7-tetramethylcyclotetrasiloxane and 208 parts by weight of 4-vinyl epoxy cyclohexane were added to a stirrer, condenser, constant Into a 500ml four-necked flask with a pressure funnel and a thermometer, add 100 parts by weight of cyclohexane, 0.002 parts by weight of chloroplatinic acid, and 0.003 parts by weight of hydroquinone at the same time; then heat to 85°C, react for 5h, and the reaction mixture is kept at 160°C Then, under reduced pressure distillation at -0.096 MPa, the solvent and residual low boilers were removed to obtain a light yellow liquid with a viscosity of 3600 mPa.s, that is, a cyclotetrasiloxane containing an epoxycyclohexane group.

[0043] According to the determination of the national standard GB / T 1677-2008 plasticizer ep...

Embodiment 3

[0050] A preparation method of epoxy silicone resin specifically includes the following steps:

[0051] (1) Preparation of cyclotetrasiloxane containing epoxycyclohexane group

[0052] In a nitrogen atmosphere, 100 parts by weight of 1,3,5,7-tetramethylcyclotetrasiloxane and 210 parts by weight of 4-vinyl epoxy cyclohexane were added to a stirrer, condenser, constant Into a 500ml four-necked flask with a pressure funnel and a thermometer, add 100 parts by weight of cyclohexane, 0.003 parts by weight of chloroplatinic acid, and 0.003 parts by weight of hydroquinone at the same time; then heat to 90°C, react for 10 hours, and the reaction mixture is kept at 160°C Under reduced pressure at -0.096MPa, the solvent and residual low boilers were removed to obtain a light yellow liquid with a viscosity of 4300mPa.s, namely cyclotetrasiloxane containing epoxycyclohexane groups.

[0053] According to the determination of the national standard GB / T 1677-2008 plasticizer epoxy value, the measur...

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Abstract

The invention discloses an epoxy organic silicon resin of which the structural formula is disclosed in the specification. The invention also discloses a preparation method of the epoxy organic silicon resin, which comprises the following steps: proportionally adding 1,3,5,7-tetramethylcyclotetrasiloxane and 4-vinyl epoxy cyclohexane into a reaction vessel in a nitrogen atmosphere, adding a solvent, a catalyst and a polymerization inhibitor, heating to react, and distilling under reduced pressure to obtain epoxy-cyclohexane-group-containing cyclotetrasiloxane; and proportionally adding the epoxy-cyclohexane-group-containing cyclotetrasiloxane, methylphenylcyclosiloxane and a blocking agent into another reaction vessel, adding a catalyst, heating to react, and distilling under reduced pressure to obtain the epoxy organic silicon resin. The preparation method is simple and flexible, has the advantage of mild reaction conditions, and is convenient to operate and suitable for industrial production.

Description

Technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to an epoxy silicone resin and a preparation method thereof. Background technique [0002] Epoxy silicone resin not only has the advantages of good flexibility, ultraviolet aging resistance and weather resistance, but also has excellent mechanical properties and bonding properties of epoxy resin. At present, the method of preparing epoxy silicone resin is basically the indirect method through silicone modified epoxy resin or epoxy resin modified silicone resin. These two indirect methods of preparing epoxy silicone resin are common The characteristic is that one resin is used to modify another resin. The disadvantage of this method is that the refractive index of the epoxy silicone prepared is usually low (≤1.5), and its light transmittance depends on the modification effect, which limits it. Application in high-end areas. Summary of the invention [0003] Aiming at the abov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G77/14C08G77/06
Inventor 张英强赵永新徐耀民吴蓁王晓瑞郑康生
Owner SHANGHAI INST OF TECH
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