CN111072951A - Drying method in polyarylether production - Google Patents
Drying method in polyarylether production Download PDFInfo
- Publication number
- CN111072951A CN111072951A CN202010100461.1A CN202010100461A CN111072951A CN 111072951 A CN111072951 A CN 111072951A CN 202010100461 A CN202010100461 A CN 202010100461A CN 111072951 A CN111072951 A CN 111072951A
- Authority
- CN
- China
- Prior art keywords
- polyarylether
- solvent
- drying
- powder
- wet powder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
- C08G65/46—Post-polymerisation treatment, e.g. recovery, purification, drying
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
- C08G65/02—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from cyclic ethers by opening of the heterocyclic ring
- C08G65/30—Post-polymerisation treatment, e.g. recovery, purification, drying
Abstract
The invention relates to a drying method in polyarylether production. The method is characterized in that: filtering slurry formed by the polyarylether, the solvent and the poor solvent to obtain polyarylether wet powder, granulating the wet powder by using a granulator, and drying by using a dryer. The method has simple flow and wide operation conditions, can greatly improve the safety of the drying process and reduce the energy consumption.
Description
Technical Field
The invention relates to a drying method in polyarylether production.
Background
Polyarylether is a general engineering plastic. Polyarylether is a polymer formed by oxidative coupling of substituted phenols in the presence of metal salts/amines under the action of oxygen. The composite material has excellent comprehensive performance, and is characterized by excellent dimensional stability and outstanding electric insulation property under long-term load, wide use temperature range and long-term use within the range of-100 to 121 ℃. The product has high tensile strength, impact strength and creep resistance. In addition, the wear resistance and the electrical property are better. The method is mainly used for replacing stainless steel to manufacture surgical medical instruments. The method can be used for manufacturing gears, blower blades, pipelines, valves, screws, other fasteners, connectors and the like in the electromechanical industry, and is also used for manufacturing parts in the electronic and electrical industries, such as coil frames, printed circuit boards and the like.
In the production of the polyarylether, the participation of a solvent is usually required, so the solvent and the like are required to be separated after the polyarylether product is formed, and the polyarylether product is dried.
The invention discloses a polyarylether drying process with high safety and low energy consumption.
Disclosure of Invention
The invention provides a drying method in polyarylether production.
The invention provides a novel drying method for improving the safety of polyarylether wet powder in the drying process and reducing the energy consumption.
The following provides a more detailed description of the present invention.
A drying method in polyarylether production is characterized in that mixed slurry of polyarylether powder, a solvent and a poor solvent is filtered to form wet powder, the wet powder is granulated by a granulator to form polyarylether particles, and then a dryer is used for heating and drying.
Polyarylether powder, namely polyarylether products obtained by chemical reaction, is characterized in that the mean particle size of the polyarylether powder is 20-100 microns.
The solvent is characterized in that the solvent is one or a mixture of more of chloroform, acetone, toluene, xylene, chlorobenzene, dimethyl sulfone and the like, and the solvent comprises but is not limited to the solvents.
The poor solvent is characterized in that the poor solvent is one or a mixture of more of water, methanol, ethanol, propanol, ethylene glycol, diethyl ether, dibutyl ether, ethyl acetate and the like, and the poor solvent comprises but is not limited to the poor solvent.
Wet powder, i.e. a mixture of the polyarylether product after filtration with a solvent and a poor solvent, characterized in that the amount of solidification (weight percentage of polyarylether in wet powder) is 40-80%, preferably 50-70%.
Polyarylether granules, i.e. granules formed from wet powder by a granulator, characterised in that the granules have an average diameter of 1 to 30mm, preferably 2 to 10 mm.
And (3) heating and drying, wherein the drying temperature is 80-160 ℃, and preferably 90-140 ℃.
And (3) heating and drying, wherein the drying pressure is normal pressure or low pressure or vacuum.
Dryers, i.e., devices that vaporize and remove solid components from a material by heating the material to a temperature at or above its boiling point, are suitable for use in the dryers of the present invention, including but not limited to box dryers, tunnel dryers, fluidized bed dryers, drum dryers, cyclone dryers, and the like.
Compared with the common drying method, the drying method provided by the invention has the advantages of higher safety, lower energy consumption and capability of reducing the energy consumption by 10-20%.
It should be understood that this example is for illustrative purposes only and is not intended to limit the scope of the present invention. Further, it should be understood that various changes or modifications of the present invention may be made by those skilled in the art after reading the contents of the present invention, and those equivalents are also within the scope of the present invention defined by the appended claims.
Claims (7)
1. A drying method in polyarylether production is characterized in that mixed slurry of polyarylether powder, a solvent and a poor solvent is filtered to form wet powder, the wet powder is granulated by a granulator to form polyarylether particles, and then a dryer is used for heating and drying.
2. The polyarylether powder of claim 1, wherein the polyarylether powder has an average particle size of 20-100 microns.
3. The solvent according to claim 1, wherein the solvent is one or more selected from chloroform, acetone, toluene, xylene, chlorobenzene, and dimethyl sulfone, including but not limited to the above solvents.
4. The poor solvent according to claim 1, wherein the poor solvent is one or more selected from water, methanol, ethanol, propanol, ethylene glycol, diethyl ether, dibutyl ether, ethyl acetate, and the like, including but not limited to the above poor solvents.
5. Wet powder according to claim 1, characterised in that the amount of solidification (weight percentage of polyarylether in wet powder) is 40-80%, preferably 50-70%.
6. Polyarylether particles according to claim 1, characterized in that the particles have an average diameter of 1-30mm, preferably 2-10 mm.
7. Drying by heating according to claim 1, characterised in that the drying temperature is 80-160 degrees celsius, preferably 90-140 degrees celsius.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010100461.1A CN111072951A (en) | 2020-02-18 | 2020-02-18 | Drying method in polyarylether production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010100461.1A CN111072951A (en) | 2020-02-18 | 2020-02-18 | Drying method in polyarylether production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111072951A true CN111072951A (en) | 2020-04-28 |
Family
ID=70324364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010100461.1A Withdrawn CN111072951A (en) | 2020-02-18 | 2020-02-18 | Drying method in polyarylether production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111072951A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114702662A (en) * | 2022-03-29 | 2022-07-05 | 大连中沐化工有限公司 | Method for treating waste liquid containing polyphenyl ether |
-
2020
- 2020-02-18 CN CN202010100461.1A patent/CN111072951A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114702662A (en) * | 2022-03-29 | 2022-07-05 | 大连中沐化工有限公司 | Method for treating waste liquid containing polyphenyl ether |
| CN114702662B (en) * | 2022-03-29 | 2023-11-28 | 大连中沐化工有限公司 | Method for treating polyphenylene ether-containing waste liquid |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200428 |
|
| WW01 | Invention patent application withdrawn after publication |