A kind of epoxy polysiloxane and epoxidation preparation method

A technology of epoxy polysiloxane and polyvinyl polysiloxane, which is applied in the field of polymer synthesis, can solve the problems of removing influence, difficult to control catalyst, difficult reaction, etc., so as to improve resistance and avoid interface compatibility. Problems, effects of easy separation and removal

Active Publication Date: 2017-12-05
SHANGHAI RESIN FACTORY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Copolymerization modification is to improve the compatibility of silicone materials and epoxy resins by using the active groups on the silicone to react with the hydroxyl and epoxy groups of the epoxy resin, because the structure of the cured product introduces more stable and Has a flexible Si-O-Si segment, but the reaction is not easy to control and the catalyst is difficult to remove, which affects the product performance

Method used

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  • A kind of epoxy polysiloxane and epoxidation preparation method
  • A kind of epoxy polysiloxane and epoxidation preparation method
  • A kind of epoxy polysiloxane and epoxidation preparation method

Examples

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Effect test

Embodiment 1

[0033] Put a thermometer on the reaction vessel, connect the vacuum dehydration device, add 30 parts of octamethylcyclotetrasiloxane, 8 parts of tetramethyltetravinylcyclotetrasiloxane, vinyl 0.4 parts of the double head, the vacuum degree is below -0.090MPa, turn on the heating and magnetic stirring device, raise the temperature to the set initial temperature of 50°C, and remove the water for 0.5h; then add the catalyst tetramethylammonium hydroxide aqueous solution, tetramethylammonium hydroxide The amount of ammonium hydroxide added accounts for 0.03% of the total mass of the mixed monomers. Replace the reflux condenser, raise the temperature of the material in the bottle to a set temperature of 100°C, and polymerize at the set temperature for 5 hours (note: no need at this time) vacuum dewatering device). After the reaction is over, quickly raise the temperature to above 140°C to decompose the catalyst. When the pH of the tail gas is detected to be about 7 with pH test pap...

Embodiment 2

[0037]Put a thermometer on the reaction vessel, connect the vacuum dehydration device, and add 30 parts of octamethylcyclotetrasiloxane, 12 parts of tetramethyltetravinylcyclotetrasiloxane, vinyl 0.6 parts of the double head, the vacuum degree is below -0.090MPa, turn on the heating and magnetic stirring device, raise the temperature to the set initial temperature of 70°C, and remove the water for 1 hour; then add the catalyst tetramethylammonium hydroxide aqueous solution, tetramethylhydrogen The amount of ammonium oxide added accounts for 0.05% of the total mass of the mixed monomers. Replace the reflux condenser, raise the temperature of the material in the bottle to a set temperature of 100°C, and polymerize at the set temperature for 5 hours (note: no vacuum is required at this time) dewatering device). After the reaction is over, quickly raise the temperature to above 140°C to decompose the catalyst. When the pH of the tail gas is detected to be about 7 with pH test pape...

Embodiment 3

[0040] Put a thermometer on the reaction vessel, connect the vacuum pumping and water removal device, add 30 parts of octamethylcyclotetrasiloxane, 10 parts of tetramethyltetravinylcyclotetrasiloxane, and 0.5 parts of vinyl double-head, When the vacuum degree is below -0.090MPa, turn on the heating and magnetic stirring device, raise the temperature to the set initial temperature of 60°C, and remove water for 0.5h; then add the catalyst tetramethylammonium hydroxide aqueous solution, the amount of tetramethylammonium hydroxide added Accounting for 0.04% of the total mass of the mixed monomer, replace the reflux condenser, raise the temperature of the material in the bottle to a set temperature of 110°C, and polymerize at the set temperature for 6 hours (note: no vacuum water removal device is required at this time). After the reaction is over, quickly raise the temperature to above 140°C to decompose the catalyst. When the pH of the tail gas is detected to be about 7 with pH te...

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Abstract

The invention discloses an epoxy polysiloxane and an epoxidation preparation method thereof. The present invention prepares the base by first using octamethylcyclotetrasiloxane, tetramethyltetravinylcyclotetrasiloxane and vinyl double-capped anion ring-opening under alkaline conditions, and then in the presence of ethyl acetate Next, the mixture obtained by mixing tetracarboxylic metal phthalocyanine complex and H2O2 is used as a catalyst to obtain epoxy polysiloxane compound. The preparation method of the invention is simple, and avoids the problems of interfacial compatibility caused by blending modification, many side reactions of copolymerization modification, difficult removal of catalysts and the like, and the prepared compound can be used in the technical field of LED lighting lamps.

Description

technical field [0001] The invention relates to the technical field of polymer synthesis, in particular to an epoxy polysiloxane and an epoxidation preparation method. Background technique [0002] Light-emitting diodes (LEDs) have been widely used in graphic display, traffic signals, detector systems, electronic equipment, backlight and other fields. In recent years, with the popularization of power LEDs, especially the development of ultraviolet-based white LEDs, packaging materials are required to have high absorption of ultraviolet light while maintaining high transparency in the visible light region; in addition, the continuous development of LED technology, There are diversified needs for brightness, usage, packaging methods, etc., and the mutual modification of epoxy resin and polysiloxane is used. Since the structure contains both silicone components and epoxy components, the good performance of epoxy resin can be fully utilized. Excellent mechanical properties, adh...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/382C08G77/20
Inventor 吴蓁张林林张英强
Owner SHANGHAI RESIN FACTORY
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