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Flow chemical synthesis method of chlorotrifluoroethylene copolymer

A technology of chlorotrifluoroethylene and synthesis method, which is applied in the field of polymer synthesis, and can solve the problems that there are no research reports on the polymerization of flow chemical gas monomers.

Active Publication Date: 2022-05-13
FUDAN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the application of flow chemistry technology in the field of polymer synthesis is increasing (patent publication numbers: CN103275112A, CN 103755777, CN 103221435A), there is still no research report on the application of flow chemistry to the polymerization of gas monomers

Method used

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  • Flow chemical synthesis method of chlorotrifluoroethylene copolymer
  • Flow chemical synthesis method of chlorotrifluoroethylene copolymer
  • Flow chemical synthesis method of chlorotrifluoroethylene copolymer

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Embodiment 1: the heating flow chemical synthesis of chlorotrifluoroethylene and n-butyl vinyl ether copolymer

[0029] According to the molar ratio of n-butyl vinyl ether: AIBN = 1000: 1, add 20 mmol and 0.02 mmol of the above raw materials into the glass bottle in turn, then add 20 mL of diethyl carbonate to dissolve each component, and blow nitrogen gas to remove the reaction solution Oxygen in the figure 1 on the syringe pump shown. The pressure of the back pressure valve at the end of the flow reactor is 60 psi. After connecting all parts of the device and immersing the flow reactor in a constant temperature oil bath at 80 °C, set the flow rate of the gas flow control meter to 1 SCCM, and the flow rate of the syringe pump Set at 20 μL / min. Chlorotrifluoroethylene gas and reaction liquid are mixed through the mixing ring, and then flow into the reactor for copolymerization. After reacting for 1 hour, collect the solution after the reaction at the outlet, and pass...

Embodiment 2

[0030] Embodiment 2: The light flow chemical synthesis of chlorotrifluoroethylene and n-butyl vinyl ether copolymer

[0031]According to the molar ratio of n-butyl vinyl ether: TPO = 1000: 1, add 20 mmol and 0.02 mmol of the above raw materials into the glass bottle in turn, then add 20 mL of diethyl carbonate to dissolve each component, and blow nitrogen gas to remove the reaction solution Oxygen in the figure 1 on the syringe pump shown. The pressure of the back pressure valve at the end of the flow reactor is 40 psi, connect all parts of the device and place the flow reactor under the irradiation of a 450 nm blue light, set the flow rate of the gas flow controller to 1 SCCM, and set the flow rate of the syringe pump to 1 SCCM. Set at 20 μL / min. Chlorotrifluoroethylene gas and reaction liquid are mixed through the mixing ring, and then flow into the reactor for copolymerization. After reacting for 1 hour, collect the solution after the reaction at the outlet, and pass 1 ...

Embodiment 3

[0032] Embodiment 3: the heating flow chemical synthesis of chlorotrifluoroethylene and vinyl acetate copolymer

[0033] According to the molar ratio of vinyl acetate: AIBN = 1000: 1, add 20 mmol and 0.02 mmol of the above raw materials into the glass bottle in sequence, then add 20 mL of diethyl carbonate to dissolve each component, blow nitrogen gas to remove the oxygen in the reaction solution , then transferred to a syringe and secured the syringe in the figure 1 on the syringe pump shown. The pressure of the back pressure valve at the end of the flow reactor is 60 psi. After connecting all parts of the device and immersing the flow reactor in a constant temperature oil bath at 80 °C, set the flow rate of the gas flow control meter to 2 SCCM, and the flow rate of the syringe pump Set at 40 μL / min. Chlorotrifluoroethylene gas and reaction liquid are mixed through the mixing ring, and then flow into the reactor for copolymerization. After reacting for 0.5 hours, collect t...

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Abstract

The invention belongs to the technical field of polymer synthesis, and particularly relates to a flowing chemical synthesis method of a chlorotrifluoroethylene copolymer. The method comprises the following steps: forming gas-liquid two-phase flow by chlorotrifluoroethylene gas and reaction liquid dissolved with vinyl monomers and an initiator in a flowing chemical reaction device, and carrying out controllable free radical polymerization under the condition of illumination or heating to obtain the corresponding chlorotrifluoroethylene copolymer. A polymerization result shows that the method disclosed by the invention is safe and simple to operate and high in polymerization reaction speed, and polymer synthesis with different requirements can be realized by increasing time, increasing flow velocity and correspondingly using a larger reactor. The flow polymerization method is safe and simple to operate, high in polymerization reaction speed and beneficial to customized synthesis of the chlorotrifluoroethylene copolymer.

Description

technical field [0001] The invention belongs to the technical field of polymer synthesis, and in particular relates to a flow chemical synthesis method of a chlorotrifluoroethylene copolymer. Background technique [0002] Fluoropolymers usually have good heat resistance, chemical corrosion resistance, durability and weather resistance, as well as low friction coefficient and high insulation. They are widely used in industrial construction, petrochemical and automotive industries, and aerospace industries. application. Among them, polychlorotrifluoroethylene (PCTEF) is one of the earliest thermoplastics developed and produced. Compared with polytetrafluoroethylene, PCTFE not only has excellent high and low temperature resistance, corrosion resistance, optical transparency and electrical insulation, but also It is more resistant to creep and can be thermoplastically processed, so it has been widely concerned by researchers. PCTFE was first prepared by a French company in 193...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F214/24C08F216/18C08F218/08C08F226/10C08F2/48C08F2/00
CPCC08F214/247C08F214/245C08F2/48C08F2/00C08F216/18C08F218/08C08F226/10
Inventor 陈茂韩洁周杨刘晓霞宋庆锋
Owner FUDAN UNIV
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