A device and process for preparing fluorine-containing polymers and fluorine-containing copolymers

A polymer and copolymer technology, applied in the field of fluorine-containing polymers and fluorine-containing copolymers, can solve the problems of uneven polymerization, increased energy consumption, and small product output, so as to avoid uneven stirring and improve production efficiency , The effect of stable product quality

Active Publication Date: 2016-02-24
衢州市鼎盛化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] 1. Continuous production cannot be carried out; after each reaction is completed, the reaction kettle needs to be cleaned and the ingredients need to be re-mixed
Therefore, the output of the product is small and cannot be mass-produced
[0009] 2. Due to the difficulty of process control, each kettle has large errors in ingredients, process control, etc., which makes the quality of the product in this kettle and the product in the previous kettle quite different, and the product quality is unstable.
[0010] 3. Materials in the water phase (including several or all of pure water, surfactants, initiators, dispersants, telogens, pH regulators, stabilizers, chain transfer agents, etc.), with the continuous Adding, the content of the components in it has been changing, which means that the monomer polymerization conditions are constantly changing, which leads to differences in the quality of the products in this kettle, which affects the use effect
[0011] 4. Reactors generally use stirring paddles, but due to the structure of the kettle and the structure of the stirring paddles, stirring cannot ensure that the materials in the kettle are uniform, and increasing the stirring intensity not only increases energy consumption, but also has limited effects; Therefore, the polymerization at each point in the tank is not uniform
[0013] 6. Since monomer polymerization is an exothermic reaction, the heat energy generated during polymerization is very large; the heat transfer area of ​​the reactor is small, and the heat transfer effect is not ideal, so the monomer can only enter the reactor in the form of gas, making the polymerization reaction time Long, low output; and if the polymerization temperature is not well controlled, it will also cause an explosion when the temperature is too high

Method used

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  • A device and process for preparing fluorine-containing polymers and fluorine-containing copolymers
  • A device and process for preparing fluorine-containing polymers and fluorine-containing copolymers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Example 1, see figure 2 , the present invention provides a device 200 for preparing fluorine-containing polymers and fluorine-containing copolymers, including: polymerization reaction pipeline 01, gas-liquid separation equipment 02, solid-liquid separation equipment 04, water phase circulation tank 05, circulation pump 03, thermostat 06C. The inlet end of the polymerization reaction pipeline 01 is connected to the outlet 20 of the thermostat 06C, and the outlet end of the polymerization reaction pipeline 01 is connected to the return pipe interface 11 of the gas-liquid separation device 02 . The liquid output end 13 of the gas-liquid separation device 02 is connected to the solid-liquid separation device, and the liquid output end 14 of the solid-liquid separation device is connected to the water phase circulation tank 05 . The gas-liquid separation device 02 is also provided with a monomer outlet 12 . The solid-liquid separation device 04 is also provided with a sol...

Embodiment 2

[0085] Embodiment 2, the structure of the device of this embodiment is the same as that of Embodiment 1; only this embodiment is an embodiment of preparing a copolymer from two kinds of fluorine-containing monomers. The specific process is as follows:

[0086] First add pure water, surfactant, etc. into the water phase circulation tank, and turn on the circulation pump to keep the water phase in a circulating state.

[0087] The initiator is sprayed into the polymerization reaction pipeline through the nozzle 08D according to the proportion, and enters into the water phase flowing in the pipeline reactor.

[0088] Monomer A is sprayed into the polymerization reaction pipeline through nozzle 08A according to the proportion in liquid form, and enters into the water phase flowing in the polymerization reaction pipeline; monomer B is sprayed into in liquid form through nozzle 08B according to the proportion Polymerization tubes, into the aqueous phase already flowing in the polym...

Embodiment 3

[0091] Embodiment 3, the structure of the device of this embodiment is the same as that of Embodiment 1; only this embodiment is an embodiment of preparing a copolymer from three kinds of fluorine-containing monomers. The specific process is as follows:

[0092] First add pure water, surfactant, etc. into the water phase circulation tank, and turn on the circulation pump to keep the water phase in a circulating state.

[0093] The initiator is sprayed into the polymerization reaction pipeline through the nozzle 08D according to the proportion, and enters into the water phase flowing in the pipeline reactor.

[0094]Monomer A is sprayed into the polymerization reaction pipeline through nozzle 08A according to the proportion in liquid form, and enters into the water phase flowing in the polymerization reaction pipeline; monomer B is sprayed into in liquid form through nozzle 08B according to the proportion The polymerization reaction pipeline enters the water phase that has flo...

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PUM

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Abstract

The invention discloses a device and a preparation technology for preparing fluoropolymers and fluorocopolymers. The device comprises a polymerization pipeline, gas-liquid separating equipment, solid-liquid separating equipment, a water-phase circulating tank, a circulating pump and a thermostat. The inlet of the polymerization pipeline is connected with the outlet of the thermostat, and the outlet of the polymerization pipeline is connected with the gas-liquid separating equipment. The liquid output end of the gas-liquid separating equipment is connected with the solid-liquid separating equipment. The liquid output end of the solid-liquid separating equipment is connected with the water-phase circulating tank. The inlet of the circulating pump is connected with the water-phase circulating tank, and the outlet of the circulating pump is connected with the inlet of the thermostat. The polymerization pipeline is provided with a plurality of feeding pipes along the length direction. Each joint between each of the feeding pipes and the polymerization pipeline is provided with a nozzle. The device and the preparation technology provided by the invention have advantages of high polymerization efficiency, simple and convenient production operation, reaction uniformity, controllable polymerization temperature and no local monomer-accumulation.

Description

technical field [0001] The invention relates to a device for fluorine-containing polymers and fluorine-containing copolymers, and also relates to a manufacturing process for continuously polymerizing or copolymerizing fluorine-containing monomers by using the device. Background technique [0002] Fluoropolymer has a series of excellent functions and characteristics, such as: high temperature resistance, low temperature resistance, corrosion resistance, weather resistance and aging resistance, high insulation, stable dielectric properties, high lubrication, non-toxic and other practical properties, making it It can show its talents in many fields of national economy such as chemical engineering, petrochemical industry, construction engineering, aviation industry, textile industry, automobile, optics, and microelectronics industry. Such as lining and coating on chemical anti-corrosion pipelines and equipment, filter materials for ultra-pure substances, high and low temperature...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F14/18C08F2/01
Inventor 应悦姜战
Owner 衢州市鼎盛化工科技有限公司
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