Amino-terminated oligomeric polyaryl ether ketone compatilizer as well as preparation method and application thereof
By introducing amino-terminated oligopolymer polyaryl etherketone compatible agents into PI and PPS, the problem of poor compatibility when blending PI and PPS is solved, significantly improving the mechanical properties and processing ease of composite materials, and expanding its application in high-temperature environments.
Patent Information
- Application Number
- CN202510230265.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-28
- Publication Date
- 2025-05-13
AI Technical Summary
Polyimide (PI) and polyphenylene sulfide (PPS) are poor in compatibility when blending, resulting in poor mechanical properties of the blend and difficult to process, which limits its application in the field of high performance requirements.
The mechanical properties and the consistency of the composite material are significantly improved by synthesizing and adding them to PI and PPS.
It significantly improves the mechanical properties of PI/PPS composite materials, reduces the melt viscosity of PI, reduces the difficulty and cost of processing, and broadens its application areas in high temperature environments.
Smart Images
Figure BDA0005291274950000021 
Figure BDA0005291274950000071 
Figure BDA0005291274950000081
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of polymer material modification, and in particular to an amino-terminated oligomeric polyaryletherketone compatibilizer and a preparation method and application thereof. Background Art
[0002] There are significant differences in the chemical structure of polyimide (PI) and polyphenylene sulfide (PPS). The different molecular chain structures and polarities make it difficult for them to form a uniform blend when mixed, which is the main reason for their poor blending compatibility. From a thermodynamic point of view, there is a lack of sufficient interaction between PI and PPS to overcome the repulsion between them, which leads to phase separation in conventional blending. This phase separation is particularly obvious under solid conditions and will seriously affect the mechanical properties of the blend. PPS has a low melting temperature and good processing fluidity, but when blended with PI, it is difficult to form a stable blending system due to poor compatibility, which further increases the processing difficulty. The application scope of PI and PPS blends will be limited, especially in fields with high requirements for material performance, such as aerospace, medical devices, etc., where it may be necessary to consider the selection and application of materials more carefully. Summary of the invention
[0003] In order to solve the above-mentioned problem of incompatibility in blending, the present invention provides an amino-terminated oligomeric polyaryletherketone compatibilizer and its preparation method and application. The present invention synthesizes amino-terminated oligomeric polyaryletherketone and uses it as a compatibilizer for two polymers with incompatible molecular structures, so that the mechanical properties of the obtained composite material can be significantly improved, and the difference in the various directional properties of the composite material is small.
[0004] In order to achieve the above objectives, the present invention is implemented by the following technical solutions:
[0005] A method for preparing an amino-terminated oligomeric polyaryletherketone compatibilizer comprises the following steps:
[0006] Under an inert atmosphere, a difluoroaryl compound, a diarylphenol compound, an amino-containing arylphenol compound, an organic solvent and a salt-forming agent are added to a reaction container under stirring, the temperature is raised, and a prepolymerization reaction is carried out in the range of 180-300° C., and then a poor solvent is used to precipitate the product while hot and the product is washed, and then the amino-terminated oligomeric polyaryletherketone compatibilizer is obtained after drying;
[0007] The ratio of the molar amount of the difluoroaryl compound to the sum of the molar amounts of the diarylphenol compound and the amino-containing aromatic phenol compound is 1:1-1.2, and the molar percentage ratio of the diarylphenol compound to the amino-containing aromatic phenol compound is in the range of 50%:50%-90%:10%.
[0008] Furthermore, the difluoroaryl compound is selected from one or more of difluorobenzophenone, difluorotriphenyldione, difluoroaryl ketone containing biphenyl structure, difluoroaryl ketone containing naphthalene structure, and difluoroaryl ketone containing bridged structure; the position of the difluoro or two fluorine-containing groups is arbitrary, but the para position is the best;
[0009] The above compounds are listed below:
[0010]
[0011] Wherein R in the difluoroaromatic ketone containing a bridge structure is hydrogen or an alkyl group, and the two R groups may be the same group or different groups;
[0012] The diarylphenol compound is selected from any one or more of diphenol, biphenol, naphthalene diphenol, bisphenol A, and bisphenol fluorene; the position of the diphenol is arbitrary, but the para position is the best;
[0013] The amino-containing aromatic phenol compound is selected from one or more of aminophenol (amino group is in the ortho-meta-position), diaminophenol (such as 2,3-diaminophenol, 2,4-diaminophenol, 3,4-diaminophenol), methylaminophenol (such as 2-methyl-4-aminophenol, 2-methyl-3-aminophenol), aminonaphthol (such as 6-aminonaphthol-2-ol, 6-amino-1-naphthol, 1-amino-7-naphthol, 1-amino-5-naphthol, 5-amino-2-naphthol, 2-amino-1-naphthol, 4-amino-2-naphthol, 1-amino-2-naphthol, 7-amino-1,2,3,4-tetrahydronaphthol, 8-amino-1,2,3,4-tetrahydro-2-naphthol, 7-amino-1,2,3,4-tetrahydro-2-naphthol, etc.);
[0014] The organic solvent is diphenyl sulfone;
[0015] The salt-forming agent is sodium carbonate and / or potassium carbonate.
[0016] Preferably, the molar percentage ratio of the diarylphenol compound to the amino-containing aromatic phenol compound is in the range of 70%:30% to 90%:10%.
[0017] Furthermore, the prepolymerization reaction temperature is 195-250° C., and the reaction time is in the range of 0.5-2 hours.
[0018] Furthermore, the total weight of the molar amount of the difluoroaryl compound, the diarylphenol compound and the amino-containing arylphenol compound accounts for 10% to 40% of the weight of the organic solvent;
[0019] The molar amount of the salt-forming agent is 30%-60% of the total molar amount of the difluoroaryl compound, the diarylphenol compound and the amino-containing arylphenol compound.
[0020] Furthermore, the number average molecular weight of the amino-terminated oligomeric polyaryletherketone compatibilizer is 1500-5000 g / mol.
[0021] The second aspect of the present invention provides an amino-terminated oligomeric polyaryletherketone compatibilizer prepared by the above preparation method.
[0022] The third aspect of the present invention provides the use of the amino-terminated oligomeric polyaryletherketone compatibilizer obtained by the above preparation method as a compatibilizer in two molecularly incompatible polymers, wherein the combination of molecularly incompatible polymers is selected from: a combination of polyimide (PI) and one of polyphenylene sulfide (PPS), polyamide (PA), polyaryletherketone (PAEK), polyethersulfone (PES), or a combination of polyphenylene sulfide (PPS) and polypolyetheretherketoneketone (PEEKK).
[0023] Preferably, the combination of molecularly incompatible polymers is polyimide (PI) and polyphenylene sulfide (PPS), wherein the mass percentage of polyimide is greater than 50%. The addition of amino-terminated oligomeric polyaryletherketone compatibilizer can reduce the difficulty and cost of PI processing. After adding amino-terminated oligomeric polyaryletherketone compatibilizer to polyimide PI, the melt viscosity of PI decreases significantly, specifically: when not added, the melt viscosity of PI is 5000Pa·s (350°C); after adding 5wt% of the compatibilizer, the melt viscosity of PI drops to 3000Pa·s (350°C).
[0024] Furthermore, the amount of the amino-terminated oligomeric polyaryletherketone compatibilizer is 5%-30% of the total weight of the molecularly incompatible polymer.
[0025] Furthermore, after the molecular structure incompatible polymer and the amino-terminated oligomeric polyaryletherketone compatibilizer are uniformly mixed, the composite material is prepared by extrusion, granulation and molding using a melt blending method.
[0026] Beneficial technical effects:
[0027] The present invention first reacts to synthesize amino-terminated oligomeric polyaryletherketone, which is used as a compatibilizer for incompatible polymers in a low molecular weight range, such as a blending compatibilizer for PI and PPS, which can significantly improve the blending compatibility of each component, so that the mechanical properties of the obtained composite material are further improved, and the performance difference between each region of the composite material is small; the wear rate of PI is relatively high, and after adding PPS, the wear rate can be reduced by 30-50%, and the wear resistance is significantly improved; the thermal expansion coefficient of PI is about 40-50ppm / ℃, and after adding PPS, it can be reduced to 30-40ppm / ℃, reducing thermal deformation and improving dimensional stability; PI is expensive, and a lot of costs can be reduced under the condition that the mechanical properties do not change much;
[0028] Since the melt viscosity stability of PI materials is poor and the processing difficulty is relatively large, the present invention improves the difficult processing characteristics of polyimide by introducing amino-terminated oligomeric PEEK, reduces the processing difficulty and cost, and helps to realize the large-scale production and application of materials;
[0029] By introducing amino-terminated oligo PEEK, the application fields of both polyimide and polyphenylene sulfide have been broadened. The modified material can still maintain good performance in high temperature environment and is suitable for electronic devices working under high temperature conditions. It improves the stability and durability of the material under stress conditions and extends its service life, providing strong support for the development of electronics, electrical, aerospace and other fields. DETAILED DESCRIPTION
[0030] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0031] Unless otherwise specifically stated, the numerical value set forth in these embodiments does not limit the scope of the present invention. The technology and method known to those of ordinary skill in the relevant art may not be discussed in detail, but in appropriate cases, the technology and method should be considered as a part of the specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values.
[0032] The experimental methods in the following examples without specifying specific conditions are usually measured in accordance with national standards; if there is no corresponding national standard, the method is carried out in accordance with the general standard requirements or general methods.
[0033] The following polyaryletherketone takes the synthesis of PEEK as an example.
[0034] Example 1
[0035] This case is the preparation of amino-terminated oligomeric polyaryletherketone, which includes the following steps:
[0036] 0.1 mol 4,4'-difluorobenzophenone (DFBP, 21.8 g), 0.09 mol hydroquinone (HQ, 9.9 g), 0.02 mol m-aminophenol (MAP, 2.18 g), 0.11 mol K2CO3 and 100 g diphenyl sulfone (DPS) were charged into a 250 cm3 flask equipped with a mechanical stirrer, a thermocouple and a dry nitrogen purge system. 3 The reaction bottle is heated using an electric heating bath filled with high-temperature silicon heat transfer fluid and nitrogen is introduced;
[0037] The temperature was raised to 220°C and a prepolymerization reaction was carried out at this temperature for 1 hour. After the reaction was completed, the reaction system in the bottle was poured out and cooled to 70°C. The product was precipitated with acetone while hot and then with deionized water. The precipitate was washed and dried to obtain the product amino-terminated oligomeric polyaryletherketone.
[0038] The number average molecular weight of the product was measured by GPC gel permeation chromatography and was found to be 2900 g / mol, and PDI was 1.21.
[0039] Example 2
[0040] This case is the preparation of amino-terminated oligomeric polyaryletherketone, which includes the following steps:
[0041] 0.1 mol 4,4'-difluorobenzophenone (DFBP, 21.8 g), 0.09 mol hydroquinone (HQ, 9.9 g), 0.015 mol m-aminophenol (MAP, 1.635 g), 0.11 mol K2CO3 and 100 g diphenyl sulfone (DPS) were charged into a 250 cm3 flask equipped with a mechanical stirrer, a thermocouple and a dry nitrogen purge system. 3 The reaction bottle is heated using an electric heating bath filled with high-temperature silicon heat transfer fluid and nitrogen is introduced;
[0042] The temperature was raised to 210°C and a prepolymerization reaction was carried out at this temperature for 1 hour. After the reaction was completed, the reaction system in the bottle was poured out and cooled to 70°C. The product was precipitated with acetone while hot and then with deionized water. The precipitate was washed and dried to obtain the product amino-terminated oligomeric polyaryletherketone.
[0043] The number average molecular weight of the product was measured by GPC gel permeation chromatography and was found to be 4800 g / mol, and PDI was 1.26.
[0044] Example 3
[0045] This case is the preparation of amino-terminated oligomeric polyaryletherketone, which includes the following steps:
[0046] 0.1 mol 4,4'-difluorobenzophenone (DFBP, 21.8 g), 0.09 mol hydroquinone (HQ, 9.9 g), 0.03 mol m-aminophenol (MAP, 3.27 g), 0.11 mol K2CO3 and 100 g diphenyl sulfone (DPS) were charged into a 250 cm3 flask equipped with a mechanical stirrer, a thermocouple and a dry nitrogen purge system. 3 The reaction bottle is heated using an electric heating bath filled with high-temperature silicon heat transfer fluid and nitrogen is introduced;
[0047] The temperature was raised to 250°C and a prepolymerization reaction was carried out at this temperature for 2 hours. After the reaction was completed, the reaction system in the bottle was poured out and cooled to 70°C. The product was precipitated with acetone while hot and then with deionized water. The precipitate was washed and dried to obtain the product amino-terminated oligomeric polyaryletherketone.
[0048] The number average molecular weight of the product was measured by GPC gel permeation chromatography and was found to be 1600 g / mol, and PDI was 1.12.
[0049] Comparative Example 1
[0050] This case is the preparation of amino-terminated oligomeric polyaryletherketone, which includes the following steps:
[0051] 0.1 mol 4,4'-difluorobenzophenone (DFBP, 21.8 g), 0.09 mol hydroquinone (HQ, 9.9 g), 0.045 mol m-aminophenol (MAP, 4.91 g), 0.11 mol K2CO3 and 100 g diphenyl sulfone (DPS) were charged into a 250 cm3 flask equipped with a mechanical stirrer, a thermocouple and a dry nitrogen purge system. 3 The reaction bottle is heated using an electric heating bath filled with high-temperature silicon heat transfer fluid and nitrogen is introduced;
[0052] The temperature was raised to 250°C and a prepolymerization reaction was carried out at this temperature for 1 hour. After the reaction was completed, the reaction system in the bottle was poured out and cooled to 70°C. The product was precipitated with acetone while hot and then with deionized water. The precipitate was washed and dried to obtain the product amino-terminated oligomeric polyaryletherketone.
[0053] The number average molecular weight of the product measured by GPC gel permeation chromatography was 1100 g / mol, and PDI was 1.18.
[0054] Comparative Example 2
[0055] This case is the preparation of amino-terminated oligomeric polyaryletherketone, which includes the following steps:
[0056] 0.1 mol 4,4'-difluorobenzophenone (DFBP, 21.8 g), 0.09 mol hydroquinone (HQ, 9.9 g), 0.01 mol m-aminophenol (MAP, 1.09 g), 0.11 mol K2CO3 and 100 g diphenyl sulfone (DPS) were charged into a 250 cm3 flask equipped with a mechanical stirrer, a thermocouple and a dry nitrogen purge system. 3 The reaction bottle is heated using an electric heating bath filled with high-temperature silicon heat transfer fluid and nitrogen is introduced;
[0057] The temperature was raised to 250°C and a prepolymerization reaction was carried out at this temperature for 3 hours. After the reaction was completed, the reaction system in the bottle was poured out and cooled to 70°C. The product was precipitated with acetone while hot and then with deionized water. The precipitate was washed and dried to obtain the product amino-terminated oligomeric polyaryletherketone.
[0058] The number average molecular weight measured by GPC gel permeation chromatography was 5900 g / mol and PDI was 1.28.
[0059] Application Example 1
[0060] The above-mentioned Examples 1 to 3, Comparative Examples 1 to 2, and the conventional PEEK resin of the control group (model: PEEK5600P, number average molecular weight 15000-65000 g / mol, production unit: Jiangsu Junhua Special Polymer Co., Ltd.) were respectively used as compatibilizers for polyimide (PI, model: YS-20 powder, number average molecular weight 20000-100000 g / mol, production unit: Jiangsu Junhua Special Polymer Co., Ltd.) and polyphenylene sulfide (PPS, model: NHU PPS 0200, number average molecular weight 15000-50000 g / mol, production unit: Japan Polyplastics).
[0061] Preparation process: polyimide and polyphenylene sulfide are dried at 120°C for at least 5 hours to completely remove moisture to ensure that the material can flow evenly during the melt extrusion process; 3kg of PI, 2kg of PPS, and 1kg of compatibilizer are taken, and the compatibilizers are respectively amino-terminated oligomeric polyaryletherketone of Example 1-Example 3, Comparative Example 1-Comparative Example 2 and conventional PEEK resin of the control group; the three materials are fully mixed in a double-rotating mixer for use; the mixed material is melt-blended, extruded and granulated using a twin-screw extruder (zone 1 300°C, zones 2-6 375°C, zones 7-10 385°C, head temperature 375°C, screw speed 20rpm, feeding frequency 10-20Hz, and head die size 5mm). After granulation, the material The film was heat treated in a high temperature oven at 150-180°C for 5 hours. After the heat treatment, film casting was performed. A single screw extrusion casting machine was used to melt extrude the pellets to form a melt. The single screw extrusion casting machine had a screw aspect ratio of 40:1 and a screw diameter of 35 mm. The barrel had 7 heating zones. According to the processing direction, the temperature of the first heating zone was set to 330°C, the temperature of the second to sixth heating zones was set to 370°C, and the temperature of the seventh heating zone was set to 355°C. The melt was cast onto five cooling rollers through the die. The temperatures of the five cooling rollers were set to 250°C, 150°C, 80°C, 50°C, and 25°C, respectively. The cooling roller had a temperature control cooling system inside to control the temperature of the roller surface. After traction, cutting, and winding, a PI / PPS film with a thickness of 0.1 mm was obtained.
[0062] Application Example 2
[0063] The amino-terminated oligomeric polyaryletherketone of Example 1 is used as a compatibilizer for polyimide and polyphenylene sulfide. The preparation process of PI / PPS film is the same as that of Application Example 1, except that the mass of PI is 4 kg and the mass of PPS is 1 kg.
[0064] Application Example 3
[0065] The amino-terminated oligomeric polyaryletherketone of Example 1 is used as a compatibilizer for polyimide and polyphenylene sulfide. The preparation process of PI / PPS film is the same as that of Application Example 1, except that the mass of PI is 3.5 kg and the mass of PPS is 1.5 kg.
[0066] Application Example 4
[0067] The amino-terminated oligomeric polyaryletherketone of Example 1 is used as a compatibilizer for polyimide and polyphenylene sulfide. The preparation process of the PI / PPS film is the same as that of Application Example 1, except that the mass of the compatibilizer is 0.5 kg.
[0068] Application Example 5
[0069] The amino-terminated oligomeric polyaryletherketone of Example 1 is used as a compatibilizer for polyimide and polyphenylene sulfide. The preparation process of the PI / PPS film is the same as that of Application Example 1, except that the mass of the compatibilizer is 0.25 kg.
[0070] Application Example 6
[0071] The amino-terminated oligomeric polyaryletherketone of Example 1 is used as a compatibilizer for polyimide and polyphenylene sulfide. The preparation process of the PI / PPS film is the same as that of Application Example 1, except that the mass of the compatibilizer is 1.5 kg.
[0072] Comparative Example 3
[0073] The amino-terminated oligomeric polyaryletherketone of Example 1 is used as a compatibilizer for polyimide and polyphenylene sulfide. The preparation process of the PI / PPS film is the same as that of Application Example 1, except that the mass of the compatibilizer is 0.1 kg.
[0074] Comparative Example 4
[0075] This case is the melt blending of polyimide and polyphenylene sulfide. The preparation process of PI / PPS film is the same as that of Application Example 1, except that no compatibilizer is added.
[0076] The performance of the PI / PPS composite film prepared by the above application was tested, and the results are shown in Table 1 below.
[0077] Table 1 PI / PPS composite film properties
[0078]
[0079]
[0080] As can be seen from Table 1, by comparing Examples 1 to 3, Comparative Examples 1 to 2, and the control group conventional PEEK control group, when amino-terminated oligomeric polyaryletherketones with the same content but different molecular weights (the dosage is 20% of the total weight of PI+PPS) are used as compatibilizers for PI and PPS (PI accounts for 60% of the total weight of PI+PPS), the film has good mechanical properties and isotropy within the compatibilizer molecular weight range of 1500-5000 g / mol, and the PI / PPS composite film using a relatively small molecular weight compatibilizer has relatively good mechanical properties and isotropy.
[0081] By comparing Application Examples 1 to 3, it can be seen that when amino-terminated oligomeric polyaryletherketone (20% of the total weight of PI+PPS) with the same content and molecular weight is used as a compatibilizer for PI and PPS (PI accounts for 60%, 80% and 70% of the total weight of PI+PPS, respectively), the mechanical properties are better and the isotropic effect is better when the amount of PI is larger.
[0082] By comparing Application Example 1, Application Examples 4-6, and Comparative Examples 3-4, it can be seen that when amino-terminated oligomeric polyaryletherketones with different contents and the same molecular weight (the amount of compatibilizer is 20%, 10%, 5%, 30%, 2%, and 0% of the total weight of PI+PPS, respectively) are used as compatibilizers for PI and PPS (PI accounts for 60% of the total weight of PI+PPS, respectively), when the amount of compatibilizer is 5%-30%, the film has relatively good mechanical properties and isotropic effect, and the mechanical properties are positively correlated with the increase in the amount of compatibilizer. When the compatibilizer content threshold value exceeds 30% or is less than 5%, the mechanical properties drop significantly.
[0083] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. A method for preparing an amino-terminated oligomeric polyaryletherketone compatibilizer, characterized in that: The steps include: Under an inert atmosphere, a difluoroaryl compound, a diarylphenol compound, an amino-containing arylphenol compound, an organic solvent and a salt-forming agent are added to a reaction container under stirring, the temperature is raised, and a prepolymerization reaction is carried out in the range of 180-300° C., and then a poor solvent is used to precipitate the product while hot and the product is washed, and then the amino-terminated oligomeric polyaryletherketone compatibilizer is obtained after drying; The ratio of the molar amount of the difluoroaryl compound to the sum of the molar amounts of the diarylphenol compound and the amino-containing aromatic phenol compound is 1:1-1.2, and the molar percentage ratio of the diarylphenol compound to the amino-containing aromatic phenol compound is in the range of 50%:50%-90%:10%.
2. The method for preparing an amino-terminated oligomeric polyaryletherketone compatibilizer according to claim 1, characterized in that: The difluoroaryl compound is selected from one or more of difluorobenzophenone, difluorotriphenyldione, difluoroaryl ketone containing biphenyl structure, difluoroaryl ketone containing naphthalene structure, and difluoroaryl ketone containing bridged structure; The diarylphenol compound is selected from any one or more of catechol, biphenol, naphthalene diol, bisphenol A, and bisphenol fluorene; The amino-containing aromatic phenol compound is selected from one or more of aminophenol (amino group is in the ortho-meta-position), diaminophenol (such as 2,3-diaminophenol, 2,4-diaminophenol, 3,4-diaminophenol), methylaminophenol (such as 2-methyl-4-aminophenol, 2-methyl-3-aminophenol), aminonaphthol (such as 6-aminonaphthol-2-ol, 6-amino-1-naphthol, 1-amino-7-naphthol, 1-amino-5-naphthol, 5-amino-2-naphthol, 2-amino-1-naphthol, 4-amino-2-naphthol, 1-amino-2-naphthol, 7-amino-1,2,3,4-tetrahydronaphthol, 8-amino-1,2,3,4-tetrahydro-2-naphthol, 7-amino-1,2,3,4-tetrahydro-2-naphthol, etc.); The organic solvent is diphenyl sulfone; The salt-forming agent is sodium carbonate and / or potassium carbonate.
3. The method for preparing an amino-terminated oligomeric polyaryletherketone compatibilizer according to claim 2, characterized in that: The molar percentage ratio of the diarylphenol compound to the amino-containing aromatic phenol compound is in the range of 70%:30%-90%:10%; the temperature of the prepolymerization reaction is 195-250° C., and the reaction time is in the range of 0.5-2 hours.
4. The method for preparing an amino-terminated oligomeric polyaryletherketone compatibilizer according to claim 3, characterized in that: The total weight of the molar amount of the difluoroaryl compound, the diarylphenol compound and the amino-containing arylphenol compound accounts for 10% to 40% of the weight of the organic solvent; The molar amount of the salt-forming agent is 30%-60% of the total molar amount of the difluoroaryl compound, the diarylphenol compound and the amino-containing arylphenol compound.
5. The method for preparing an amino-terminated oligomeric polyaryletherketone compatibilizer according to any one of claims 1 to 4, characterized in that: The number average molecular weight of the amino-terminated oligomeric polyaryletherketone compatibilizer is 1500-5000 g / mol.
6. An amino-terminated oligomeric polyaryletherketone compatibilizer obtained according to the preparation method according to any one of claims 1 to 5.
7. Use of the amino-terminated oligomeric polyaryletherketone compatibilizer prepared by the preparation method according to any one of claims 1 to 5 in two polymers with incompatible molecular structures, characterized in that: Amino-terminated oligomeric polyaryletherketone is used as a compatibilizer, and the combination of incompatible polymers with molecular structures is selected from: a combination of polyimide and one of polyphenylene sulfide, polyamide, polyaryletherketone, and polyethersulfone, or a combination of polyphenylene sulfide and poly(polyetheretherketoneketone).
8. The use according to claim 7, characterized in that: The combination of polymers with incompatible molecular structures is polyimide and polyphenylene sulfide, wherein the mass percentage of polyimide is greater than 50%.
9. The use according to claim 8, characterized in that: The amount of the amino-terminated oligomeric polyaryletherketone compatibilizer used is 5%-30% of the total weight of the molecular structure incompatible polymer.
10. The use according to claim 8, characterized in that: After the molecular structure incompatible polymer and the amino-terminated oligomeric polyaryletherketone compatibilizer are uniformly mixed, the composite material is prepared by extrusion, granulation and molding using a melt blending method.