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Modified polyarylether ketone and preparation method thereof

A polyaryletherketone, modification technology, applied in the field of modified polyaryletherketone and its preparation, can solve the problems of material modulus decrease, processing difficulty, polyaryletherketone high melting point, etc., to reduce ether exchange effect, improve Aggregate structure, effect of improving solubility

Active Publication Date: 2014-01-15
吉林省中科聚合工程塑料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyaryletherketone belongs to high temperature resistant thermoplastics. Although its heat resistance is very good, its T g (Glass transition temperature) is still not high when the temperature exceeds T g Afterwards, the modulus of the material decreases rapidly
In addition, polyaryletherketone has a high melting point, poor melt fluidity, and is insensitive to temperature changes, making it very difficult to process
In addition, the Vicat softening point and heat distortion temperature of polyaryletherketone are relatively low, and the high-temperature mechanical properties need to be improved

Method used

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  • Modified polyarylether ketone and preparation method thereof
  • Modified polyarylether ketone and preparation method thereof
  • Modified polyarylether ketone and preparation method thereof

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preparation example Construction

[0046] The present invention also provides a preparation method of the modified polyaryletherketone represented by the above formula (I), comprising:

[0047] A) Under the protection of an inert gas, mix imidazole monomers, bisphenol monomers, disubstituted benzophenones of the formula (IV) and the first aprotic solvent, and react with heating under the action of carbonate to obtain Modified polyaryletherketone represented by formula (I);

[0048] The imidazole monomer has a structure of formula (II-1) or formula (II-2);

[0049] The bisphenol monomer has a structure of formula (III-1), formula (III-2) or formula (III-3);

[0050]

[0051] The-Ar 1 -One of the structures selected from the following formulas (1) to (2):

[0052]

[0053] The-Ar 2 -One of the structures selected from the following formulas (4) to (6):

[0054]

[0055]

[0056] Among them, A 1 with A 2 Each independently is S or O; R 1 with R 2 each independently selected from H, NH 2 , NO ...

Embodiment 1

[0071] 0.671g (0.005mol) benzimidazolone (HBI), 1.141g (0.005mol) bisphenol A (BPA), 2.182g difluorobenzophenone (DFK), 2.763g Potassium carbonate, 1.500g calcium carbonate, 15ml N-methylpyrrolidone (NMP) and 20ml toluene, heated to 132°C and kept for 2.5h, azeotropically removed water, raised temperature to remove toluene, continued heating to 195°C, reacted for 6h, cooled down, added Dilute with 20ml of N,N-dimethylacetamide, precipitate in a mixed solution of ethanol, water and acetic acid, filter the precipitate, extract with deionized water for 12h in a Soxhlet extractor, remove inorganic salts and reaction solvents, and dry , to obtain the modified polyaryletherketone shown in formula (I-a), the yield is 94%, and its reaction formula is as follows:

[0072]

[0073] Experimental results prove that the modified polyaryletherketone represented by formula (I-a) obtained in Example 1 is soluble in N,N-dimethylformamide, N,N-dimethylacetamide and chloroform.

[0074] The ...

Embodiment 2

[0079] Add 1.487g (0.0099mol) benzimidazole thione (MBI), 0.032g (0.0001mol) phenolphthalein (PHI), 2.511g (0.01mol) dichlorobenzophenone (DCK) to a 100ml three-neck round bottom flask , 2.763g of potassium carbonate, 15g of N-cyclohexylpyrrolidone (CHP) and 12ml of toluene, heated to 130°C to azeotropically remove water, keep warm for 2.5h, raise the temperature to remove toluene, continue heating to 185°C, react for 3h, cool down, add 20ml of N , diluted with N-dimethylacetamide, precipitated in a mixed solution of ethanol and water, filtered the precipitate, extracted it with deionized water for 12 hours in a Soxhlet extractor, removed inorganic salts and reaction solvents, and dried to obtain the formula ( The modified polyaryletherketone shown in I-b) has a yield of 92.5%, and its reaction formula is as follows:

[0080]

[0081] Experimental results prove that the modified polyaryletherketone represented by formula (I-b) obtained in Example 2 is soluble in N,N-dimethy...

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Abstract

The invention provides a modified polyarylether ketone and a preparation method of the modified polyarylether ketone. The modified polyarylether ketone is as shown in the formula (I). Compared with the conventional polyarylether ketone, first of all, in the main chain of the modified polyarylether ketone, an imidazole part is used for replacing a bisphenol structure containing ether bond to reduce the content of oxygen atoms in the main chain structure and reduce the content of ether bond, so that ether exchange interaction generated by the heated molecular chains is reduced and the heat resistance of polymerization is improved; secondly, an imidazole monomer is introduced in the modified polyarylether ketone; the imidazole ring is introduced to improve the rigidity of the main chain, so as to improve the heat resistance of the modified polyarylether ketone; at last, a larger pendant group or an fatty group chain is introduced to the main chain of the modified polyarylether ketone to adjust the structure of the main chain and improve the aggregation structure, so that the solubility of the modified polyarylether ketone is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a modified polyaryletherketone and a preparation method thereof. Background technique [0002] Polyaryletherketone is a new type of semi-crystalline aromatic high temperature resistant resin, which has high heat resistance, excellent mechanical properties, electrical properties and radiation resistance, chemical resistance, fatigue resistance, impact resistance, creep resistance, It is especially suitable for high-performance composite resin matrix and super engineering plastics. It has a wide range of applications in many high-tech fields such as aerospace, electronic information, and energy. It has become a hot spot in the field of polymer material research. [0003] The polyaryletherketones that are widely used at present mainly include polyether ether ketone (PEEK), polyether ketone (PEK), polyetherether ketone (PEKK) and polyether ketone ether ketone ke...

Claims

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Application Information

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IPC IPC(8): C08G73/06C08G65/40
Inventor 周光远王志鹏王红华
Owner 吉林省中科聚合工程塑料有限公司
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