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Electrochemical method for synthesizing organic silicon based polymer

A basic polymer, silicone technology, applied in the direction of electrolytic organic production, electrolytic process, electrolytic components, etc., can solve the problems of high temperature, difficult to obtain silicone basic polymer, complicated post-processing, etc., to solve the problem of high energy consumption Effect

Inactive Publication Date: 2014-10-29
HANGZHOU NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to solve the current electrochemical reaction for the preparation of silicone base polymers, high temperature, reflux, complicated post-treatment and other processes are required, and it is also difficult to obtain synthetic organic The problem of the necessary organosilicon base polymer for silicon materials, the present invention proposes an electrochemical method for synthesizing organosilicon base polymer

Method used

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  • Electrochemical method for synthesizing organic silicon based polymer

Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] In an electrolytic cell (30 mL), under nitrogen, add 0.82 g of tetrabutylammonium triflate, tetrahydrofuran (15 mL), 2.2 g (0.06875 mol) of methanol and 1.2 g (0,02 mol) of di silicon oxide. Platinum mesh was used as the working electrode, the reference electrode was silver / silver chloride, and the counter electrode was nickel mesh, and the reaction was carried out at room temperature at 2.9V for 4 hours. After the reaction was finished, it was extracted with n-pentane, and the organic solvent was removed to obtain a total of 75 grams of D3, D4 and D5. The ratio of the three is 1:5:2.

Embodiment 2

[0021] In an electrolytic cell (30 mL), under nitrogen protection, add 0.82 g of tetrabutylammonium trifluoromethanesulfonate, 1,2-dimethoxyethane (15 mL), 2.2 g (0.0478 mol) of ethanol and 1.2 grams (0,02mol) of silica. Platinum mesh was used as the working electrode, the reference electrode was silver / silver chloride, and the counter electrode was nickel mesh, and the reaction was carried out at room temperature at 2.9V for 10 hours. After the reaction was finished, it was extracted with n-pentane, and the organic solvent was removed to obtain a total of 61 grams of D3, D4 and D5. The ratio of the three is 1:4:2.

Embodiment 3

[0023] In an electrolytic cell (30 mL), under argon protection, add 0.82 g of tetrabutylammonium triflate, acetonitrile (15 mL), 3.2 g (0.1 mol) of methanol and 1.2 g (0,02 mol) of silica. A graphite plate was used as the working electrode, the reference electrode was silver / silver chloride, and the counter electrode was a nickel mesh, and 2V was applied at 0°C for 10 hours of reaction. After the reaction was finished, it was extracted with n-pentane, and the organic solvent was removed to obtain a total of 78 grams of D3, D4 and D5. The ratio of the three is 1:4:3.

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Abstract

The invention relates to the field of organic chemistry. In order to solve the problems that at present, an electrochemical reaction needs relatively high temperature, reflux and complicated after-treatment processes, and an organic silicon based polymer necessary for synthesizing an organic silicon material can be hardly prepared from compounds, the invention provides an electrochemical method for synthesizing the organic silicon based polymer. The organic silicon based polymer is synthesized by enabling silicon dioxide and alcohol compounds to directly react. According to the electrochemical method provided by the invention, the electrochemical reaction is adopted, the organic silicon based polymer can be prepared by enabling rich SiO2 (more than 99%) such as sand and quartz in nature to react with alcohol, environment-friendly synthesis of the organic silicon material is realized, and the aims of saving energy and reducing emission.

Description

technical field [0001] The invention relates to the field of organic chemistry, in particular to a preparation method for directly synthesizing an organosilicon base polymer by reacting silicon dioxide and an alcohol compound. Background technique [0002] Silicone base polymers include, for example: Hexamethylcyclotrisiloxane (D 3 ), octamethylcyclotetrasiloxane (D 4 ), Decamethylcyclopentasiloxane (D 5 ) and polydimethylsiloxane, etc., silicone oil, silicone resin, silicone rubber and other silicone materials produced from silicone base polymers are a class of new chemical materials with excellent performance. They have been used in aerospace, electronics It has been widely used in almost all industrial production fields such as electrical, construction, automobile, textile, light industry and food. At present, the method of producing the base polymer of silicon materials is mainly through carbothermal reduction, which uses the carbon produced by the combustion of charc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B3/00
Inventor 李志芳蒋剑雄伍川罗蒙贤
Owner HANGZHOU NORMAL UNIVERSITY
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