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A kind of poly(aryl ether ketone) and preparation method thereof

A technology of polyaryl ketone and degree of polymerization, which is applied in the field of polyarylether ketone and its preparation, can solve the problems of material modulus drop, not high, difficult processing, etc., achieve good dimensional stability, improve heat resistance, improve resistance thermal effect

Active Publication Date: 2015-08-05
浙江帕尔科新材料有限公司
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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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  • A kind of poly(aryl ether ketone) and preparation method thereof
  • A kind of poly(aryl ether ketone) and preparation method thereof
  • A kind of poly(aryl ether ketone) and preparation method thereof

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preparation example Construction

[0038] The present invention also provides a preparation method of polyaryletherketone represented by the above formula (I), comprising:

[0039] A) Under the protection of inert gas, mix the imidazole monomer, the disubstituted benzophenone with the structure of formula (III) and the first aprotic solvent, and heat the reaction under the action of carbonate to obtain the structure of formula (I) The polyaryletherketone, the imidazole monomer has a structure of formula (II-1) or formula (II-2);

[0040]

[0041] The -Ar- is selected from one of the following structures of formula (1) to formula (2):

[0042]

[0043] 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 2 One of C1~C5 alkyl groups; R 3with R 4 Each independently selected from one of H, phenyl and substituted phenyl; n is a polymer; X is a halogen atom or NO 2 , preferably Cl, F or NO 2 . The R 1 , R 2 , R 3 with R 4 All are the sa...

Embodiment 1

[0058] Add 1.341g (0.01mol) of benzimidazolone (HBI), 2.182g (0.01mol) of difluorobenzophenone (DFK), 2.763g of potassium carbonate, 25g of sulfolane and 12ml of toluene in a 100ml three-neck round bottom flask, Heat to 130°C to azeotropically remove water, keep warm for 2 hours, raise the temperature to remove toluene, continue to heat to 185°C, react for 4.5 hours, cool down, add 20ml dimethylacetamide to dilute, and precipitate in the mixed solution of ethanol, water and acetic acid, precipitate After filtration, extract with deionized water in a Soxhlet extractor for 12 hours, remove inorganic salts and reaction solvents, and dry to obtain polyaryletherketone represented by formula (I-a), whose reaction formula is as follows:

[0059]

[0060] The polyaryletherketone shown in the formula (I-a) obtained in Example 1 is tested by nuclear magnetic resonance, and its solid nuclear magnetic quantitative carbon spectrum is obtained, as shown in figure 1 shown. Depend on fig...

Embodiment 2

[0064] Add 1.482g (0.01mol) 5-methylbenzimidazolone (mHBI), 2.182g (0.01mol) difluorobenzophenone (DFK), 1.590g potassium carbonate, 12.5g N-cyclohexylpyrrolidone (CHP) and 12ml toluene, heated to 150°C, kept warm for 2h, azeotropically removed water, raised temperature to remove toluene, continued heating to 190°C, reacted for 4.5h, then heated to 205°C, reacted for 2h, cooled down, Add 10ml of dimethylacetamide for dilution, precipitate in a mixed solution of ethanol, water and hydrochloric acid, filter the precipitate, extract it with deionized water for 12 hours in a Soxhlet extractor, remove inorganic salts and reaction solvents, and dry to obtain the formula The polyaryletherketone shown in (I-b) has the following reaction formula:

[0065]

[0066] The polyaryletherketone represented by the formula (I-b) obtained in Example 2 was tested for its glass transition temperature, and its Tg was found to be 235°C.

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Abstract

The invention provides polyaryletherketone and a method for preparing the polyaryletherketone. The polyaryletherketone is shown in the chemical formula (I). Compared with existing polyaryletherketone, the polyaryletherketone is characterized in that firstly, due to the fact that carbon-carbon bonds and ketone carbonyl bonds are used as connecting bonds in the aromatic nucleuses of the main chain of the polyaryletherketone, the content of oxygen atoms in the structure of the main chain is reduced, due to the fact that ether bonds are not contained, the trans-etherification effect produced when the molecular chains are heated is avoided, and heat resistance of polymer is improved; secondly, due to the fact that the number of the aromatic nucleuses in the main chain is increased, the rigidity of the main chain is improved, the thermal motion of the molecular chains is limited, and the polyaryletherketone has better dimensional stability; thirdly, due to the fact that imidazole monomers are introduced, the ether bonds which are connected to form the main chain are replaced by carbon-nitrogen bonds, the rigidity of the main chain is also improved due to the fact that imidazole rings are introduced, and the heat resistance of the polyaryletherketone is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a 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 ketone (PEK...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G73/06
Inventor 周光远王志鹏王红华
Owner 浙江帕尔科新材料有限公司
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