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Poly aryl ether nitrile resin, poly aryl ether nitrile fiber and preparation methods thereof

A polyarylether nitrile and resin technology applied in the field of polymer materials to achieve high thermal stability, regular molecular structure, high tensile strength and elastic modulus

Inactive Publication Date: 2012-07-04
SICHUAN FEIYA NEW MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The preparation method of polyarylether nitrile resin involved in the above-mentioned patents is mainly aimed at the preparation and application of general-purpose profiles and composite materials, but not for the molecular structure design and preparation of spinning grade polyarylether nitrile resin prepared by fibers

Method used

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  • Poly aryl ether nitrile resin, poly aryl ether nitrile fiber and preparation methods thereof
  • Poly aryl ether nitrile resin, poly aryl ether nitrile fiber and preparation methods thereof
  • Poly aryl ether nitrile resin, poly aryl ether nitrile fiber and preparation methods thereof

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preparation example Construction

[0045] The present invention also provides the preparation method of above-mentioned polyarylether nitrile, specifically:

[0046] (1) Polymerization reaction:

[0047] Weigh raw materials according to the following molar ratio: 2,6-dihalobenzonitrile: aromatic dihydric phenol: catalyst: aprotic strong polar solvent: dehydrating agent=1:1:1.1~1.3:14~18:6 ~8;

[0048] Under the protection of an inert gas, react the above raw materials at 140-160°C for 1-3 hours, evaporate the dehydrating agent and then raise the temperature to 190-205°C, and react for 1.5-3 hours to obtain a polyarylether nitrile solution; preferably at 200°C ;

[0049] The aromatic dihydric phenol is At least one of the aromatic dihydric phenols is

[0050] (2) post-processing

[0051] The polyarylether nitrile solution is subjected to precipitation and solid-liquid separation, and the separated solid is washed, filtered and dried to obtain the polyarylether nitrile resin of the present invention. ...

Embodiment 1

[0062] The synthesis of embodiment 1 polyarylether nitrile resin, the preparation of polyarylether nitrile fiber and its properties

[0063] Add 2150 grams (12.5 moles) of 2,6-dichlorobenzonitrile, 1375 grams (12.5 moles) of hydroquinone, 2070 grams (15 moles) ) Potassium carbonate, 20L sulfolane and 9L toluene, slowly pass through argon protection, start stirring, raise the temperature to 160°C for dehydration reaction for 1.5 hours, distill the toluene through the water separator, raise the temperature to 200°C for 2 hours to stop the reaction. The reactant is put into 60L of methanol, heated, stirred and refluxed for 3 hours and separated from the solid and liquid by the centrifuge. The liquid is transported to the rectifying tower for rectification and recovery of the solvent for recycling. pH value is 4-6), then washed with boiling water, filtered, repeated 5 times, and dried at 150° C. for 8 hours to obtain 2745 grams of polyarylether nitrile resin.

[0064] The number ...

Embodiment 2

[0066] The synthesis of embodiment 2 polyarylether nitrile resin, the preparation and performance of polyarylether nitrile fiber

[0067] Add 2150 grams (12.5 moles) of 2,6-dichlorobenzonitrile, 1100 grams (10 moles) of hydroquinone, 465 grams (2.5 moles) ) 4,4-diphenol, 2070 grams (15 moles) of potassium carbonate, 20L sulfolane and 9L toluene, slowly pass into argon protection, start stirring, heat up to 160 ° C for 2 hours of dehydration reaction, and steam out through the water separator Toluene, raise the temperature to 200°C for 1.5 hours to stop the reaction. The reactant is put into 60L of methanol, heated, stirred and refluxed for 3 hours and separated from the solid and liquid by the centrifuge. The liquid is transported to the rectifying tower for rectification and recovery of the solvent for recycling. pH value is 4-6), then washed with boiling water, filtered, repeated 5 times, and then dried at 150 ° C for 8 hours to obtain 2745 grams of polyarylether nitrile re...

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Abstract

The invention belongs to the technical field of polymer material and particularly relates to poly aryl ether nitrile resin, poly aryl ether nitrile fiber and preparation methods of the poly aryl ether nitrile resin and the poly aryl ether nitrile fiber. The molecular structure of the poly aryl ether nitrile resin contains structural units in the molar ratio of (80-100):(0-20). The poly aryl ether nitrile resin has the number-average molecular weight of 30,000 to 80,000. The poly aryl ether nitrile resin has a regular molecular structure and a large molecular weight and can be used to produce the high-performance poly aryl ether nitrile fiber stably.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to polyarylether nitrile resin, polyarylether nitrile fiber and a preparation method thereof. Background technique [0002] Polyarylether nitrile is a kind of thermoplastic polymer with nitrile groups on the side chain. It is a kind of high-performance structure with excellent comprehensive performance developed for the needs of national defense and military industry and cutting-edge technology since the 1980s. Molecular materials have excellent properties such as high heat resistance, flame retardancy, mechanical strength, UV protection and creep resistance, and can be widely used in aerospace, electronic packaging, machinery manufacturing, auto parts and other fields. [0003] The domestic research on poly(arylene ether nitrile) started in the 1980s, mainly focusing on the research of synthesis process and formula. Domestic applications for the production in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G65/40C08G65/46D01F6/78D01D5/08D01D5/12
Inventor 余兴江李岳山任伟
Owner SICHUAN FEIYA NEW MATERIAL
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