Polyarylene ether nitrile separation and purification Conical Multifunction filter and drying machine
Polyaryl ether nitrile (PEN) is a linear aromatic polymer compound widely used in industry, aerospace, and automobile manufacturing. The main chain of the macromolecule contains a large number of aromatic rings, and the side chain is cyano group, which endows the polymer with heat resistance and mechanical strength and adhesion performance; in addition, the macromolecule contains a large number of ether bonds, which endow the polymer with toughness.
PEN also has excellent properties such as good self-lubrication, easy processing, stable insulation, and hydrolysis resistance, making it widely used in industries such as industry, aerospace, automobile manufacturing, electronic appliances, medical treatment, and food processing. broad. It has excellent performance itself, so it has a competitive advantage for other types of this product.
Extraction and separation process of polyarylene ether nitrile aviation polymer material
For the problems of the existing technology, the new process needs to solve the problems of the unfriendly environment caused by the use of the dehydrating agent in the existing technology, the large amount of salt in the polymerization system, the difficulty of dissolution, the increase in equipment investment, the impact on quality, etc., polymer plastics Special filter cleaning and drying machine meets the requirements of polyaryl ether nitrile separation and purification
(1)Polyarylene nitrile polymerization
Add potassium carbonate and 2,6-dichlorobenzonitrile in sequence to N-methylpyrrolidone, stir the reaction solution evenly, add dihydric phenol and toluene in sequence to the reaction solution to perform dehydration reaction, and then carry out polymerization reaction to obtain high Viscosity polyarylethernitrile solution
(2) Cooling crystallization of polyarylethernitrile
The high-viscosity polyarylene ether nitrile solution obtained by the polymerization reaction is introduced into the autoclave, and a casting head, a granulation chip and a cooling sputtering device are provided at the discharge port of the autoclave, the granulation chip and the cooling sputtering device are started, and the pressure pump is used The high-viscosity polyarylene ether nitrile solution is sent to the discharge port casting head, and the polyphenylene ether nitrile solution is used as a cooling liquid when sequentially granulating
(3) Grinding and crushing of polyarylethernitrile
The polycrystalline aryl ether nitrile particles obtained by cooling and crystallization are crushed together with the cooling liquid to obtain poly aryl ether nitrile powder particles as cylindrical particles with a length of 0.25 to 0.5 mm and a diameter of 0.2 to 0.45 mm.
(4) Solvent extraction of polyarylethernitrile
The crushed polyarylene ether nitrile powder is sent to a filter cleaning and drying machine dedicated to polymer plastics. A cylindrical cone filter and an electric heating auxiliary device are provided in the extraction equipment, and polyarylene ether is extracted with a mixed extraction solution of methanol and acetone. Filter the nitrile powder, dissolve the polyarylene ether nitrile powder 1 or 2 times, vacuum
(5) Purification of polyarylethernitrile deionized water
Add deionized water to the washing filter dryer, wash and filter the solvent to extract the dried polyaryl ether nitrile powder, dissolve the poly aryl ether nitrile powder 4 to 6 times with deionized water, and finally dry the refined polyaryl ether nitrile Polymer nitrile powder.
Polyarylene ether nitrile separation and purification Conical Multifunction filter and drying machine Technical advantages
Wuxi Shuangrui Machinery's multifunctional filter washing and drying machine is used to improve the separation and purification process in the continuous production of polyaryl ether nitrile, solve the problems in the existing separation and purification of poly aromatic ether nitrile production, and ensure the continuous production of poly aromatic ether nitrile Sex, green environmental protection and high production efficiency. Compared with the traditional polyaryl ether nitrile separation and purification technology, the problems solved by the new technology have the following three points
(1) There is no need to add a large amount of high boiling point solvent to dilute the reaction solution after the synthesis reaction is completed, and the production will not be interrupted due to the synthesis reactor, nor will the resources be wasted due to the use of a large amount of solvent
(2) In the separation and purification process, there is no need to set up a special precipitation kettle, which simplifies the process equipment and process. In addition, there is no need to use a large amount of precipitant to precipitate polyarylene ether nitrile particles. The waste of precipitant and subsequent recovery of solvent such as precipitant The difficulty will not increase
(3) Compared with the traditional extraction kettle, the new technology is based on the traditional extraction kettle, and a cylindrical cone filter and electric heating auxiliary equipment suitable for the particle size of this product are designed to realize the multifunctional extraction, filtration and drying of the extraction kettle. Integration, no need to set up a pipeline to transport solid powder containing a certain amount of water, simplifying the design and process of the pipeline
(4) The filter washing and drying machine uses as little methanol as possible to achieve the effective extraction and purification of crude polyarylethernitrile. When the ratio is lower than this, the purification effect of the product cannot be obtained, and if it exceeds this ratio, it is easy to waste methanol
(5) Multifunctional filter washing and drying machine The selection of extraction temperature and extraction time is to ensure the complete and complete extraction and refining. If it is not operated within the parameter range, the refining effect will be poor and resources will be wasted.
The traditional polyarylene ether nitrile separation and purification process design is unreasonable, and the steps are cumbersome and inefficient. The cone-shaped multi-function filter washing and drying machine produced by Wuxi Shuangrui Machinery simplifies the separation and purification production process of polyarylene ether nitrile high-performance plastics, ensuring production continuity, high efficiency, low energy consumption, environmental protection, and universality. , In line with the requirements of industrial production technology.