Low filler content antistatic polyaryletherketone composite material and preparation method thereof

Abstract

The application relates to the technical field of high polymer material modification, in particular to a low-filler-content anti-static polyaryletherketone composite material and a preparation method thereof, which comprises polyaryletherketone resin, one-dimensional conductive filler 3-5%, and two-dimensional conductive filler modified by ionic liquid 1-3%. The one-dimensional conductive filler and the two-dimensional conductive filler modified by ionic liquid are mixed and ball milled, and then mixed with an amino silane coupling agent solution and ultrasonically treated; the obtained pretreated filler is dried, premixed with the polyaryletherketone, and then melt-blended and extruded to obtain the low-filler-content anti-static polyaryletherketone composite material. The filler content of the composite material is low, and the anti-static performance and the mechanical performance are good in combination.

Description

Technical Field

[0001] This invention relates to the field of polymer material modification technology, specifically to an antistatic polyaryletherketone composite material with low filler content and its preparation method. Background Technology

[0002] Polyetheretherketone (PEEK), a semi-crystalline thermoplastic engineering plastic, has become a core material in high-end fields such as aerospace, electronic packaging, and medical implants due to its excellent comprehensive properties—long-term service temperature up to 260℃, tensile strength exceeding 90MPa, chemical corrosion resistance, and biocompatibility of 145. Especially in the electronics industry, PEEK's insulation properties (volume resistivity as high as 10⁻⁶) are highly valued. 16 While the Ω·cm (a small amount of static electricity) can ensure the insulation safety of components, it is easy to cause the accumulation effect of static electricity, leading to a series of chain problems. For example, when the material is used in electronic components, it can generate electrostatic discharge (ESD), and the voltage can exceed 15kV instantaneously, which can break down semiconductor microcircuits; or in flammable and explosive application environments, static sparks can trigger combustion and explosion accidents.

[0003] Currently, the industry mainly relies on conductive filler composite methods to improve the conductivity of PEEK. This involves adding carbon fiber (CF), carbon black (CB), and other materials to construct a conductive network, thereby reducing the volume resistivity to 10. 6 -10 9 The electrostatic dissipation range is Ω·cm, but the content of conductive filler usually needs to exceed 20wt% to form an effective percolation network. Excessive inorganic conductive filler will hinder the movement of polymer chain segments, causing the material to become brittle. In addition, nano-conductive fillers are prone to agglomerate into micron-sized aggregates due to their high specific surface area, which will block the conductive pathway. Furthermore, it will also cause the processing temperature to rise, resulting in poor resistivity stability of the material after extrusion or injection molding. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides an antistatic polyaryletherketone composite material with low filler content and a method for its preparation. The composite material of this invention has a low filler content and exhibits good overall antistatic and mechanical properties.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] An antistatic polyaryletherketone composite material with low filler content comprises the following materials in 100% by weight: 92%-96% polyaryletherketone resin, 3%-5% one-dimensional conductive filler, and 1%-3% ionic liquid modified two-dimensional conductive filler.

[0007] Further, the polyaryletherketone resin is selected from one or more of polyetheretherketone (PEEK), polyetherketone (PEK), polyetherketoneketone (PEKK), polyetheretherketoneketone (PEEKK), and polyetherketoneetherketoneketone (PEKEKK), and the polyaryletherketoneetherketoneketone (PEKEKK) has a melt index of 15-100 g / 10 min at 400°C and 2.16 kg. The polyaryletherketone resin can be a pure resin or a modified resin, selected as needed.

[0008] Furthermore, the one-dimensional conductive filler is selected from one or more of carbon nanotubes, carbon fibers, metal nanowires (such as silver, copper, nickel, etc.), and metal-plated glass fibers (such as glass fibers with aluminum or nickel plating). The carbon nanotubes have a diameter of less than 20 nm and an aspect ratio of greater than 100, and the carbon fibers have a diameter of less than 8 μm and an aspect ratio of greater than 100 μm. Among them, CNTs have a high aspect ratio, making it easier to form a low percolation threshold network and ultra-high conductivity (10 μm). 3 -10 4 (S / cm); Carbon fiber has high strength, corrosion resistance, stable conductivity, and a resistivity of 10. -3 -10 -1 Ω·cm; Metal-coated glass fibers are lightweight and low-cost, with a resistivity of 10⁻³-10⁻¹ Ω·cm and better dispersibility than pure metal fibers, but the coating is also prone to oxidation; Metal fibers have excellent conductivity, but are easily oxidized (copper) or have high cost (silver); Therefore, the preferred one-dimensional conductive filler is carbon nanotubes and / or carbon fibers.

[0009] Furthermore, the method for obtaining the ionic liquid-modified two-dimensional conductive filler includes the following steps:

[0010] First, the ionic liquid is dissolved in an alcohol solvent and stirred evenly. Then, the two-dimensional conductive filler is added while stirring. After ultrasonic stirring and dispersion for 2-4 hours, it is vacuum dried to obtain the ionic liquid modified two-dimensional conductive filler.

[0011] Furthermore, the ionic liquid is selected from one or more of the following: 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid (melting point -71°C), 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid (melting point 6.5°C), 1-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid (melting point 16°C), 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid (melting point 16°C), and trioctylmethylammonium chloride ionic liquid (melting point -20°C).

[0012] The two-dimensional conductive filler is selected from one or more of graphene and MXene (transition metal carbide sheets), and the sheet diameter of the two-dimensional conductive filler is 5-15 micrometers and the thickness is less than 5nm.

[0013] The mass ratio of the alcohol solvent, the ionic liquid, and the two-dimensional conductive filler is 1:1-3:3-6.

[0014] The preparation method of the above-mentioned antistatic polyaryletherketone composite material with low filler content includes the following steps:

[0015] S1. Weigh the materials according to the formula, mix the one-dimensional conductive filler with the two-dimensional conductive filler modified by ionic liquid and then ball mill it. Mix the ball-milled material with the aminosilane coupling agent solution and ultrasonically treat it. Dry it to obtain the pretreated filler for later use.

[0016] S2. After premixing polyaryletherketone with the pretreated filler, melt blending and extrusion are performed to obtain an antistatic polyaryletherketone composite material with low filler content.

[0017] Furthermore, the ball milling adopts dry ball milling, the mass ratio of grinding beads to material is 5-10:1, the diameter of the grinding beads is 0.1-5mm, and a mass ratio of 3-5mm large grinding beads to 0.1-2mm small grinding beads is used, and the ball milling time is 1-3h;

[0018] The ultrasonic treatment time is 20-60 minutes.

[0019] Further, the aminosilane coupling agent solution has a mass percentage of 0.5%-2%, and the selected aminosilane coupling agent is one or more selected from N-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane, N-aminoethyl-3-aminopropyltriethoxysilane, bis(methyldiethoxysilylpropyl)amine, and N-(3-triethoxysilylpropyl)-4-hydroxybutyramide, wherein the solvent is an alcohol and / or water; the mass percentage of the ball-milled material in the aminosilane coupling agent solution is 20%-50%. This type of coupling agent is relatively heat-resistant.

[0020] Furthermore, the melt blending extrusion process is carried out using a twin-screw extruder, which includes a feeding section, a melting section, a mixing section, a venting section, and a homogenizing section. The temperature of the feeding section is set to 300-330℃, the temperature of the melting section is set to 340-370℃, the temperature of the mixing section is set to 360-380℃, the temperature of the venting section is set to 360-380℃, and the temperature of the homogenizing section is set to 370-390℃. The melting section, the mixing section, and the venting section are all equipped with vents. The vents are connected to a vacuum system to remove small molecule volatiles to avoid carbonization affecting the composite material properties. A vacuum gradient is used, with the vacuum in the melting section being -0.01MPa to -0.04MPa, the vacuum in the mixing section being -0.05MPa to -0.07MPa, and the vacuum in the venting section being -0.08MPa to -0.095MPa.

[0021] Beneficial technical effects: This invention first modifies a two-dimensional conductive filler with an ionic liquid, and then treats the modified material and a one-dimensional conductive filler together with a high-temperature resistant amino coupling agent before blending them with PAEK matrix resin to form an antistatic composite material. The ionic liquid-modified two-dimensional conductive filler enhances charge dissipation through interfacial polarization and, in conjunction with the one-dimensional conductive filler, connects the two-dimensional conductive filler in series. This allows for the construction of an effective conductive path even with low filler content, achieving the antistatic properties of PAEK material at low filler content. Through low-filler composite filler and process innovation, PAEK is endowed with durable antistatic properties while minimizing mechanical property loss. Detailed Implementation

[0022] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present invention or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0023] Unless otherwise specifically stated, the numerical values ​​set forth in these embodiments do not limit the scope of the invention. Techniques and methods known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques and methods should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that values ​​expressed, for example, as "within the range of ab" or "between the range of ab," do not include the endpoint values ​​a and b; values ​​expressed as "for ab," "is ab," or "ab" include the endpoint values ​​a and b.

[0024] Experimental methods not specified in the following examples are generally performed according to national standards; if there is no corresponding national standard, they are performed according to general standard requirements or general methods.

[0025] The polyaryletherketones in the following examples use polyetheretherketone (PEEK) as an example. When it is necessary to obtain composite materials of other types of polyaryletherketones, PEEK can be replaced with polyetherketone (PEK), polyetherketoneketone (PEKK), polyetheretherketoneketone (PEEKK), or polyetherketoneetherketoneketone (PEKEKK).

[0026] The following ionic liquids are abbreviated as IL; graphene is abbreviated as Gr; 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid is abbreviated as [BMIM][BF4]; 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid is abbreviated as [BMIM][PF6]; 1-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid is abbreviated as [BMIM][OTf]; 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid is abbreviated as [EMIm][BF4].

[0027] The graphene used below has an average radial dimension of 5-10 micrometers and an average thickness of less than 5 nm; the carbon nanotubes used below are multi-walled carbon nanotubes (MWNTs) with a diameter of 6-13 nm and a length of 2.5-20 micrometers.

[0028] Example 1

[0029] This case study focuses on the preparation of graphene modified with ionic liquids.

[0030] Weigh out the ionic liquid and dissolve it in anhydrous ethanol (solvent). Stir for 10 minutes until completely dissolved. While stirring, slowly add graphene (average radial size of 5-10 micrometers and average thickness of less than 5 nm). Continue ultrasonic stirring for 3 hours (temperature controlled at 25±5℃). Then, vacuum dry at 60℃ to obtain ionic liquid modified graphene (labeled Gr / IL).

[0031] The specific preparation parameters are shown in Table 1.

[0032] Table 1. Preparation parameters of graphene modified with ionic liquid

[0033]

[0034] Example 2

[0035] An antistatic polyaryletherketone composite material with low filler content comprises the following materials in 100% by weight: 95% polyetheretherketone (Victrex 450G, melt index 40g / 10min at 400℃ and 2.16kg), 4% multi-walled carbon nanotubes (MWNT), and 1% Gr / IL-I.

[0036] The preparation method of the above composite material includes the following steps:

[0037] S1. Weigh the above materials according to the formula, mix MWNT and Gr / IL-Ⅰ and then ball mill them. Use dry ball milling. The mass ratio of grinding beads to materials is 8:1. Use 5mm large grinding beads and 2mm small grinding beads in equal mass ratio. The ball milling time is 2 hours and the speed is 400 rpm.

[0038] The ball-milled material was mixed with an anhydrous ethanol solution (1 wt%) of N-aminoethyl-3-aminopropyltriethoxysilane and ultrasonically treated for 30 min (the mass percentage of the ball-milled material in the coupling agent solution was 50%). The mixture was then dried at 80 °C to obtain the pretreated filler for later use.

[0039] S2. After premixing polyetheretherketone with the above-mentioned pretreated filler, the melt blending extrusion is performed using a twin-screw extruder. The twin-screw extruder includes a feeding section, a melting section, a mixing section, a venting section, and a homogenizing section. The temperature of the feeding section is set to 320°C, the temperature of the melting section is set to 360°C, the temperature of the mixing section is set to 375°C, the temperature of the venting section is set to 370°C, and the temperature of the homogenizing section is set to 380°C. The melting section, the mixing section, and the venting section are all equipped with vents. The vents are connected to a vacuum system to remove small molecule volatiles to avoid carbonization affecting the performance of the composite material. A vacuum gradient is used, with the vacuum in the melting section being -0.04MPa, the vacuum in the mixing section being -0.06MPa, and the vacuum in the venting section being -0.09MPa. After extrusion, an antistatic polyaryletherketone composite material with low filler content is obtained.

[0040] Example 3

[0041] The composite material preparation process in this case is the same as in Example 1, except that the ionic liquid-modified two-dimensional conductive filler is replaced with Gr / IL-Ⅱ.

[0042] Example 4

[0043] The composite material preparation process in this case is the same as in Example 1, except that the ionic liquid-modified two-dimensional conductive filler is replaced with Gr / IL-Ⅲ.

[0044] Example 5

[0045] The composite material preparation process in this case is the same as in Example 1, except that the ionic liquid-modified two-dimensional conductive filler is replaced with Gr / IL-Ⅳ.

[0046] Example 6

[0047] An antistatic polyaryletherketone composite material with low filler content comprises the following materials in 100% by weight: 95% polyetheretherketone (Victrex 450G, melt index 40g / 10min at 400℃ and 2.16kg), 3% multi-walled carbon nanotubes (MWNT), and 2% Gr / IL-I.

[0048] The preparation method of the above composite material includes the following steps:

[0049] S1. Weigh the above materials according to the formula, mix MWNT and Gr / IL-Ⅰ and then ball mill them. Use dry ball milling. The mass ratio of grinding beads to materials is 8:1. Use 5mm large grinding beads and 2mm small grinding beads in equal mass ratio. The ball milling time is 2 hours and the speed is 400 rpm.

[0050] The ball-milled material was mixed with an anhydrous ethanol solution (1.5 wt%) of N-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane and ultrasonically treated for 30 min (the mass percentage of the ball-milled material in the coupling agent solution was 30%). The mixture was then dried at 80 °C to obtain the pretreated filler for later use.

[0051] S2. After premixing polyetheretherketone with the above-mentioned pretreated filler, the melt blending extrusion is performed using a twin-screw extruder. The twin-screw extruder includes a feeding section, a melting section, a mixing section, a venting section, and a homogenizing section. The temperature of the feeding section is set to 325°C, the temperature of the melting section is set to 365°C, the temperature of the mixing section is set to 375°C, the temperature of the venting section is set to 375°C, and the temperature of the homogenizing section is set to 380°C. The melting section, the mixing section, and the venting section are all equipped with vents. The vents are connected to a vacuum system to remove small molecule volatiles to avoid carbonization affecting the performance of the composite material. A vacuum gradient is used, with the vacuum in the melting section being -0.03MPa, the vacuum in the mixing section being -0.05MPa, and the vacuum in the venting section being -0.08MPa. After extrusion, an antistatic polyetheretherketone composite material with low filler content is obtained.

[0052] Example 7

[0053] An antistatic polyaryletherketone composite material with low filler content comprises the following materials in 100% by weight: 94% polyetheretherketone (Victrex 450G, melt index 40g / 10min at 400℃ and 2.16kg), 5% multi-walled carbon nanotubes (MWNT), and 1% Gr / IL-I.

[0054] The preparation method of the above composite material includes the following steps:

[0055] S1. Weigh the above materials according to the formula, mix MWNT and Gr / IL-Ⅰ and then ball mill them. Use dry ball milling. The mass ratio of grinding beads to materials is 6:1. Use 5mm large grinding beads and 1mm small grinding beads in equal mass ratios. The ball milling time is 2 hours and the speed is 400 rpm.

[0056] The ball-milled material was mixed with an anhydrous ethanol solution (2 wt%) of N-aminoethyl-3-aminopropyltriethoxysilane and ultrasonically treated for 30 min (the mass percentage of the ball-milled material in the coupling agent solution was 40%). The mixture was then dried at 80 °C to obtain the pretreated filler for later use.

[0057] S2. After premixing polyetheretherketone with the above-mentioned pretreated filler, the melt blending extrusion is performed using a twin-screw extruder. The twin-screw extruder includes a feeding section, a melting section, a mixing section, a venting section, and a homogenizing section. The temperature of the feeding section is set to 330°C, the temperature of the melting section is set to 370°C, the temperature of the mixing section is set to 375°C, the temperature of the venting section is set to 375°C, and the temperature of the homogenizing section is set to 390°C. The melting section, the mixing section, and the venting section are all equipped with vents. The vents are connected to a vacuum system to remove small molecule volatiles to avoid carbonization affecting the performance of the composite material. A vacuum gradient is used, with the vacuum in the melting section being -0.03MPa, the vacuum in the mixing section being -0.07MPa, and the vacuum in the venting section being -0.095MPa. After extrusion, an antistatic polyetheretherketone composite material with low filler content is obtained.

[0058] Comparative Example 1

[0059] The composite material in this case comprises the following materials by weight percentage: 95% polyetheretherketone (Victrex 450G), 4% multi-walled carbon nanotubes, 0.7% graphene, and 0.3% [BMIM][BF4]. The graphene and multi-walled carbon nanotubes were ball-milled according to step S1 of Example 2, followed by the addition of a coupling agent solution and ultrasonication. After drying, they were ultrasonically mixed with an ionic liquid and ultrasonically treated. Then, the composite material was prepared by melt blending and extrusion in step S2 (other conditions not shown are the same as in Example 2).

[0060] Comparative Example 2

[0061] The composite material in this case comprises the following materials by weight percentage: 95% polyetheretherketone (Victrex 450G) and 5% multi-walled carbon nanotubes. The multi-walled carbon nanotubes were ball-milled, added with a coupling agent solution, sonicated, and dried according to step S1 of Example 2, and then melt-blended and extruded in step S2 (other conditions not shown are the same as in Example 2).

[0062] Comparative Example 3

[0063] The composite material in this case comprises the following materials by weight percentage: 95% polyether ether ketone (Victrex 450G) and 5% Gr / IL-Ⅰ. Gr / IL-Ⅰ was added to the coupling agent solution according to step S1 of Example 2, followed by ultrasonication and drying, and then melt blending extrusion was carried out in step S2 (other conditions not shown are the same as in Example 2).

[0064] Comparative Example 4

[0065] The composite material in this case comprises the following materials by weight percentage: 95% polyetheretherketone (Victrex 450G), 4% multi-walled carbon nanotubes, and 1% [BMIM][BF4]. The multi-walled carbon nanotubes were ball-milled according to step S1 of Example 2, and after adding a coupling agent solution, they were ultrasonicated, dried, mixed with an ionic liquid, and ultrasonically treated. Then, they were prepared by melt blending and extrusion in step S2 (other conditions not shown are the same as in Example 2).

[0066] Test case

[0067] The materials from the above cases were made into specimens, and performance tests were conducted. The results are shown in Table 2.

[0068] Table 2 Performance of Each Case

[0069]

[0070]

[0071] As shown in Table 2, this invention first modifies the two-dimensional conductive filler with an ionic liquid, and then treats the modified material and the one-dimensional conductive filler together with a high-temperature resistant amino coupling agent before blending them with a PEEK matrix resin to form an antistatic composite material. This effectively forms conductive pathways at relatively low addition levels, with a volume resistivity of 10⁻⁶. 7 -10 8 The PEEK material achieves antistatic properties with low addition levels of Ω·cm; and its volume resistivity deterioration is minimal after 1000 hours in high temperature and high humidity environments, demonstrating good long-lasting antistatic properties.

[0072] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A low-filler-content antistatic polyaryletherketone composite material, characterized in that, The material comprises the following 100% by weight percentages: 92%-96% polyaryletherketone resin, 3%-5% one-dimensional conductive filler, and 1%-3% ionic liquid-modified two-dimensional conductive filler; The one-dimensional conductive filler is selected from carbon nanotubes, the diameter of which is less than 20 nm and the aspect ratio is greater than 100; the two-dimensional conductive filler is selected from one or more of graphene and MXene, the sheet diameter of which is 5-15 micrometers and the thickness is less than 5 nm. The method for obtaining the ionic liquid-modified two-dimensional conductive filler includes the following steps: first, dissolving the ionic liquid in an alcohol solvent, stirring until uniform, then adding the two-dimensional conductive filler while stirring, ultrasonically stirring and dispersing for 2-4 hours, and then vacuum drying to obtain the ionic liquid-modified two-dimensional conductive filler; the mass ratio of the alcohol solvent, the ionic liquid, and the two-dimensional conductive filler is 1:1-3:3-6. The preparation method of the low-filler-content antistatic polyaryletherketone composite material includes the following steps: S1. Weigh the materials according to the formula, mix the one-dimensional conductive filler with the two-dimensional conductive filler modified by ionic liquid and then ball mill it. Mix the ball-milled material with the aminosilane coupling agent solution and ultrasonically treat it. Dry it to obtain the pretreated filler for later use. S2. After premixing polyaryletherketone with the pretreated filler, melt blending and extrusion are performed to obtain an antistatic polyaryletherketone composite material with low filler content. The melt blending extrusion process is carried out using a twin-screw extruder, which includes a feeding section, a melting section, a mixing section, a venting section, and a homogenizing section. The melting section, the mixing section, and the venting section are all equipped with vents. The vents are connected to a vacuum system with a vacuum gradient: the vacuum in the melting section is -0.01 MPa to -0.04 MPa, the vacuum in the mixing section is -0.05 MPa to -0.07 MPa, and the vacuum in the venting section is -0.08 MPa to -0.095 MPa.

2. The antistatic polyaryletherketone composite material with low filler content according to claim 1, characterized in that, The polyaryletherketone resin is selected from one or more of polyetheretherketone, polyetherketone, polyetherketoneketone, polyetheretherketoneketone, and polyetherketoneetherketoneketone. The melt index of the polyaryletherketone resin at 400°C and 2.16 kg is 15-100 g / 10 min.

3. The antistatic polyaryletherketone composite material with low filler content according to claim 1, characterized in that, The ionic liquid is selected from one or more of the following: 1-butyl-3-methylimidazolium tetrafluoroborate ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate ionic liquid, 1-butyl-3-methylimidazolium trifluoromethanesulfonate ionic liquid, 1-ethyl-3-methylimidazolium tetrafluoroborate ionic liquid, and trioctylmethylammonium chloride ionic liquid.

4. The antistatic polyaryletherketone composite material with low filler content according to claim 1, characterized in that, The ball milling adopts dry ball milling, with a mass ratio of grinding beads to material of 5-10:1, a ball diameter of 0.1-5mm, and a mass ratio of 3-5mm large grinding beads to 0.1-2mm small grinding beads. The ball milling time is 1-3 hours. The ultrasonic treatment time is 20-60 minutes.

5. The antistatic polyaryletherketone composite material with low filler content according to claim 1, characterized in that, The aminosilane coupling agent solution has a mass percentage of 0.5%-2%, and the selected aminosilane coupling agent is one or more selected from N-(2-aminoethyl)-3-aminopropylmethyldiethoxysilane, N-aminoethyl-3-aminopropyltriethoxysilane, bis(methyldiethoxysilylpropyl)amine, and N-(3-triethoxysilylpropyl)-4-hydroxybutyramide, wherein the solvent is an alcohol and / or water; the mass percentage of the ball-milled material in the aminosilane coupling agent solution is 20%-50%.

6. The antistatic polyaryletherketone composite material with low filler content according to claim 1, characterized in that, The temperature of the feeding section is set to 300-330℃, the temperature of the melting section is set to 340-370℃, the temperature of the mixing section is set to 360-380℃, the temperature of the exhaust section is set to 360-380℃, and the temperature of the homogenization section is set to 370-390℃.

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