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Polymer purification device and purification method

A purification method and technology of purification device, which are applied in chemical instruments and methods, feeding devices, chemical/physical/physical-chemical stationary reactors, etc., can solve the influence of polymer properties, difficult to realize industrialization, and large solvent consumption, etc. problems, to achieve the effect of being conducive to recycling, realizing automation and continuity, and strong washing capacity

Inactive Publication Date: 2014-10-29
KINGFA SCI & TECH CO LTD +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] High-performance polymers have been widely used in recent years because of their high temperature resistance and good mechanical properties. However, most of their synthetic routes use solution polycondensation, and the products are mixed with a large amount of solvents and by-products. If the treatment is not clean, it will have a great impact on the performance of the polymer
[0003] In the prior art, the process of repeatedly boiling in water is often used, which consumes a lot of solvent, high energy consumption, and intermittent operation, which is easy to mix impurities; or the high-temperature and high-pressure water is used to bring out inorganic salts through a high-pressure container filled with materials. However, its structure is complex, and industrialization is not easy to realize; or use ultrasonic devices and autoclaves to purify polymers, but this type of technology is still a batch operation with low efficiency, and new impurities are easily introduced in the intermediate process

Method used

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  • Polymer purification device and purification method

Examples

Experimental program
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Effect test

Embodiment 1

[0074] Purification of polyether ether ketone resin prepared with diphenyl sulfone as solvent.

[0075] Take 25 kg of polyetheretherketone containing diphenyl sulfone and inorganic salts, grind it, put it into the washing kettle, and start stirring at a speed of 200 r / min. Add 200kg of acetone to the solvent tank, turn on the heating, half an hour later, the acetone is completely soaked in the polymer and starts to flow back into the solvent tank through the siphon, at this time, pure acetone vapor continuously flows into the washing tank, and at the same time, there is diphenyl The acetone in the sulfone was refluxed to the solvent kettle by siphon action, and maintained in this state for 9 hours, and the content of diphenyl sulfone was tested every 90 minutes in the middle, and then the vacuum pump was turned on to extract the acetone in the washing kettle into the solvent kettle, and the solvent kettle Take out the acetone and replace it with deionized water. Continue washi...

Embodiment 2

[0079] Purification of Polyetheretherketone Ketone Resin Using Diphenylsulfone as Solvent

[0080] Take 25 kg of polyether ether ketone ketone containing diphenyl sulfone and inorganic salts, pulverize it, put it into the washing tank, and start stirring at a speed of 200 r / min. Add 200kg of ethanol to the solvent kettle and turn on the heating. After 40 minutes, the ethanol is completely soaked in the polymer and starts to flow back into the solvent kettle through the siphon. The ethanol is refluxed to the solvent kettle through siphon action, and maintained in this state for 12 hours, and the content of diphenyl sulfone is tested every 2 hours in the middle, and then the vacuum pump is turned on to pump out all the ethanol into the solvent kettle, and the ethanol in the solvent kettle is extracted and replaced with Ionized water, continue to wash in the same way, and start to reflux after about 1 hour, and after maintaining the reflux state for 10 hours, pump out the deioniz...

Embodiment 3

[0084] Purification of polyether ether ketone resin prepared with sulfolane as solvent.

[0085] Take 25 kg of polyether ether ketone containing sulfolane solvent and inorganic salts, grind it, add it into the washing tank, and start stirring at a speed of 200 r / min. Add 200kg of deionized water to the solvent kettle and turn on the heating. After 1 hour, the deionized water is completely soaked in the polymer and starts to flow back into the solvent kettle through the siphon. At this time, pure deionized water continuously flows into the washing kettle At the same time, the deionized water with solvent and inorganic salt is refluxed to the solvent tank through siphon action, and it is maintained in this state for 9 hours, and the content of solvent and inorganic salt is tested every 90 minutes in the middle, and then the vacuum pump pumps out the deionized water in the washing tank water, and the purified polyetheretherketone was sucked out by vacuum suction, dried to constan...

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Abstract

The invention discloses a polymer purification device and a purification method. The purification device comprises a solvent supply system and a washing system, wherein the solvent supply system comprises a solvent kettle, a solvent circulation pipe and a heater, one end of the solvent circulation pipe is connected with the solvent kettle, the other end of the solvent circulation pipe is connected with the washing kettle, the heater is used for heating washing solvents in the solvent kettle so that the washing solvents flow into the washing kettle through the solvent circulation pipe, the washing system comprises a washing kettle, a motor, a condenser and a siphon, the motor and the condenser are respectively arranged at the top of the washing kettle, one end of the siphon is connected with the washing kettle, the other end of the siphon is connected with the solvent kettle, and washing solvents in the washing kettle flow back into the solvent kettle through the siphon. The polymer purification device provided by the invention has the advantage that the structure is simple, and the purification method adopting the purification device has the advantages that the energy consumption is low, the purification effect is good, and the automation can be realized.

Description

technical field [0001] The invention relates to the purification of polymers, in particular to a polymer purification device and a purification method. Background technique [0002] High-performance polymers have been widely used in recent years because of their high temperature resistance and good mechanical properties. However, most of their synthetic routes use solution polycondensation, and the products are mixed with a large amount of solvents and by-products. If the treatment is not clean, it will have a great impact on the performance of the polymer. [0003] In the prior art, the process of repeatedly boiling in water is often used, which consumes a lot of solvent, high energy consumption, and intermittent operation, which is easy to mix impurities; or the high-temperature and high-pressure water is used to bring out inorganic salts through a high-pressure container filled with materials. However, its structure is complex, and industrialization is difficult to achie...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G65/30C08G65/46C08G75/23B01J19/18B01J4/00
Inventor 陈锐斌代惊奇曹民苏成晓吴浩斌曾祥斌吴博
Owner KINGFA SCI & TECH CO LTD
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