Antistatic heat-resistant Teflon conveyor belt and production process thereof

Abstract

The invention discloses an antistatic and heat-resistant Teflon conveyor belt and a production process thereof, belonging to the technical field of Teflon conveyor belts. The method comprises the following steps: first, washing a glass fiber base fabric in methanol and water in sequence, drying the base fabric, and then soaking the base fabric in a rare earth solution for 1-2 hours, taking the base fabric out, and drying the base fabric in a blast oven to obtain a pretreated base fabric; second, adding the pretreated base fabric into a polytetrafluoroethylene composite dispersion liquid and soaking the base fabric for 30-50 minutes, gradient baking the pretreated base fabric in a blast oven, cooling the pretreated base fabric to room temperature, repeating the process multiple times until a required thickness is reached, and then sintering the pretreated base fabric in a continuous sintering furnace at 360-370°C for 20 minutes, and cooling the pretreated base fabric to room temperature to obtain the antistatic and heat-resistant Teflon conveyor belt. The invention not only imparts antistatic performance to the Teflon conveyor belt but also enhances its heat resistance and mechanical properties by adding carbon nanotubes and a reinforcing microsphere dispersion liquid and adopting a production process of gradient baking and high-temperature sintering.

Description

Technical Field

[0001] The invention belongs to the technical field of Teflon conveyor belts, and particularly relates to a Teflon conveyor belt with antistatic and heat-resistant properties and a production process thereof. Background Art

[0002] Teflon conveyor belts are typically made from polytetrafluoroethylene (PTFE) resin through calendering or extrusion, offering excellent chemical resistance and mechanical properties. However, due to the high surface resistivity of PTFE itself, its antistatic properties are poor, making traditional Teflon conveyor belts prone to static charge accumulation during use, causing static electricity to affect or even damage the conveyed items. This presents a challenge for the transport of static-sensitive items. Furthermore, even though PTFE has a high melting point (approximately 340°C), long-term use in high-temperature environments can reduce the crystallinity and mechanical strength of Teflon conveyor belts, leading to deformation and wear, which limits their application.

[0003] Patent application CN117645090A discloses an antistatic Teflon conveyor belt and its preparation process. The frame material is made of composite fiber cloth impregnated with an impregnation liquid. The composite fiber cloth is woven using warp yarns of glass fiber filaments and weft yarns of composite fiber material through a straight warp and weft machine. The impregnation liquid consists of 60wt% PTFE emulsion, sodium naphthalene treatment liquid, PES emulsion, aramid fiber, and deionized water. The covering layer is a PTFE composite emulsion, the raw materials of which are: 60wt% PTFE emulsion, γ-aminopropyltriethoxysilane, boric acid, PES-coated oxidized nanocarbon spheres, and potassium titanate whiskers. Although the Teflon conveyor belt produced by this method has excellent mechanical strength and antistatic properties, the composite fiber material uses a large amount of expensive PBO fiber filaments, resulting in extremely high cost of the Teflon conveyor belt, making it unsuitable for industrial use.

[0004] Therefore, how to improve the antistatic performance and heat resistance of Teflon conveyor belts is a technical problem that the present invention needs to solve. Summary of the Invention

[0005] In order to solve the technical problems raised in the background technology, the present invention provides an antistatic and heat-resistant Teflon conveyor belt and a production process thereof. By adding carbon nanotubes and reinforcing microsphere dispersion and adopting a production process of gradient baking and high-temperature sintering, not only the Teflon conveyor belt is given antistatic properties, but also its heat resistance and mechanical properties are enhanced.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A production process for an antistatic and heat-resistant Teflon conveyor belt comprises the following steps:

[0008] The first step is to wash the glass fiber base cloth in methanol and water in sequence, dry it at 100-120°C, soak it in a rare earth solution for 1-2 hours, take it out and dry it in a blast oven at 100-120°C for 30 minutes to obtain a pretreated base cloth;

[0009] In the second step, the pretreated base fabric is added to the polytetrafluoroethylene composite dispersion and immersed for 30-50 minutes, baked in a blast oven for gradient, cooled to room temperature, and repeated several times until the required thickness is reached. It is then transferred to a continuous sintering furnace at 360-370°C and sintered for 20 minutes. After cooling to room temperature, an antistatic and heat-resistant Teflon conveyor belt is obtained.

[0010] Furthermore, the rare earth solution is a lanthanum chloride aqueous solution having a lanthanum concentration of 0.3-0.5 wt%. The lanthanum binds to the glass fiber base fabric through physical adsorption and chemical bonding, creating a distortion zone on the glass fiber surface, thereby activating the glass fiber surface. Furthermore, the lanthanum can form a strong ionic coordination bond with the polytetrafluoroethylene matrix. Furthermore, the lanthanum compound on the glass fiber surface also acts as a "pinning" agent. These two aspects work together to improve the interfacial bonding strength between the glass fiber base fabric and the polytetrafluoroethylene.

[0011] Furthermore, the polytetrafluoroethylene composite dispersion is composed of a mixture of polytetrafluoroethylene emulsion, reinforced microsphere dispersion, high-temperature resistant silane coupling agent and carbon nanotubes in a mass ratio of 100:20:0.6:0.2-0.3, the solid content of the polytetrafluoroethylene emulsion is 60%, and the solid content of the reinforced microsphere dispersion is 30-40%.

[0012] Furthermore, the high-temperature resistant silane coupling agent is coupling agent KRN8026 or coupling agent KRN8027. High-temperature resistant silane coupling agents remain stable under high-temperature conditions and are not easily decomposed. They can not only improve the interfacial bonding strength between polytetrafluoroethylene and glass fiber base fabric, but also improve the interfacial bonding strength of carbon nanotubes in polytetrafluoroethylene, thereby enhancing the mechanical properties of the Teflon conveyor belt.

[0013] Furthermore, the enhanced microsphere dispersion is prepared by the following steps:

[0014] Step A1, adding high-temperature resistant polyaryletherketone powder to chloroform and ultrasonically dispersing it uniformly, then adding trifluoroacetic acid and stirring to dissolve the high-temperature resistant polyaryletherketone, then adding boron trifluoride etherate and ethanedithiol, reacting at room temperature under nitrogen protection for 48 hours, then pouring into ethanol and stirring at high speed for 5 minutes, then standing to precipitate, filtering, washing with ethanol multiple times, and drying to obtain intermediate 1;

[0015] Step A2: Add intermediate 1 to chloroform and stir to dissolve, then add ethylene glycol and N-bromosuccinimide, stir and react at room temperature for 30 minutes, pour into methanol and stir at high speed for 5 minutes, then let stand to precipitate, filter, wash with methanol several times, and dry to obtain intermediate 2;

[0016] Step A3: After the intermediate 2 is completely dissolved in chloroform, an aqueous solution of sodium dodecylbenzenesulfonate and sulfuric acid is injected, and the mixture is stirred and emulsified at a speed of 10,000-15,000 r / min for 0.5-1 h. The mixture is then heated to 65° C. and distilled until no fraction is distilled out. The mixture is then heated to 75° C. and kept warm for 2 h. After natural cooling, a reinforced microsphere dispersion is obtained.

[0017] Furthermore, the usage ratio of the high-temperature resistant polyaryletherketone powder, chloroform, trifluoroacetic acid, boron trifluoride etherate, ethanedithiol and ethanol is 25-35g:800mL:300mL:62-64mL:22mL:3L; the high-temperature resistant polyaryletherketone powder is any one of polyetherketoneketone, polyetheretherketoneketone and polyetherketoneetherketoneketone.

[0018] Furthermore, the usage ratio of the intermediate 1, chloroform, ethylene glycol, N-bromosuccinimide and methanol is 12-12.2 g:800 mL:5.6-6 mL:16-18 g:2 L.

[0019] Furthermore, the usage ratio of the intermediate 2, chloroform and sodium dodecylbenzenesulfonate aqueous solution is 6-8 g:100 mL:100 mL; the concentration of sodium dodecylbenzenesulfonate in the aqueous solution of sodium dodecylbenzenesulfonate and sulfuric acid is 0.01-0.03 g / mL, and the concentration of sulfuric acid is 0.1 g / mL.

[0020] Furthermore, the gradient baking temperature is set at 100°C, 130°C, 170°C, and 190°C, and the baking time at each temperature is 30 minutes. The gradient baking setting can effectively reduce the internal stress of the Teflon sheet and avoid cracks on the sheet surface caused by multiple immersions.

[0021] An antistatic and heat-resistant Teflon conveyor belt is produced by the above production process.

[0022] Beneficial effects:

[0023] The present invention soaks the cleaned glass fiber base cloth with a lanthanum chloride aqueous solution, so that the lanthanum element is strongly adsorbed on the glass fiber surface. At the same time, the lanthanum element significantly improves the interfacial bonding strength between the polytetrafluoroethylene matrix and the glass fiber base cloth through the effects of ion coordination bonds and physical pinning. In addition, the high-temperature resistant silane coupling agent in the polytetrafluoroethylene composite dispersion can further improve the interfacial bonding strength between the polytetrafluoroethylene matrix and the glass fiber base cloth, thereby improving the mechanical strength of the Teflon conveyor belt.

[0024] The polytetrafluoroethylene composite dispersion prepared by the present invention contains carbon nanotubes with excellent conductive properties, which can significantly reduce the surface resistance of Teflon conveyor belts, thereby giving the Teflon conveyor belts good antistatic properties. The polytetrafluoroethylene composite dispersion also contains a reinforcing microsphere dispersion. The ketone carbonyl groups on the molecular chain are changed by a substitution reaction, and the high-temperature resistant polyaryletherketone that is not easily soluble in organic solvents is converted into a soluble intermediate. After emulsification and dispersion to form a nano-microsphere emulsion, the ketone carbonyl groups on the molecular chain are restored, thereby preparing a reinforcing microsphere dispersion with good dispersibility. The reinforcing microsphere dispersion can improve the high-temperature resistance and mechanical properties of polytetrafluoroethylene, so that the polytetrafluoroethylene can still maintain excellent mechanical strength under long-term use under high temperature conditions.

[0025] The present invention produces a Teflon conveyor belt through a production process of multiple impregnations, gradient baking and high-temperature sintering. The high-temperature sintering can rearrange the molecules of polytetrafluoroethylene and reinforcing microspheres inside the conveyor belt to form a tighter and more ordered structure, which can effectively improve the interface compatibility between the components and the overall mechanical properties of the Teflon conveyor belt. DETAILED DESCRIPTION

[0026] 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 embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0027] Example 1

[0028] This embodiment provides a dispersion of reinforced microspheres, which is prepared by the following steps:

[0029] Step A1, 25g of polyetherketoneketone powder was added to 800mL of chloroform and ultrasonically dispersed uniformly, then 300mL of trifluoroacetic acid was added and stirred to dissolve the high-temperature resistant polyaryletherketone, and then 62mL of boron trifluoride etherate and 22mL of ethanedithiol were added. The mixture was reacted at room temperature under nitrogen protection for 48h, and then poured into 3L of ethanol and stirred at high speed for 5min. The mixture was allowed to settle, filtered, washed with ethanol several times, and dried to obtain intermediate 1;

[0030] Step A2, 12 g of intermediate 1 was added to 800 mL of chloroform and stirred to dissolve, followed by the addition of 5.6 mL of ethylene glycol and 16 g of N-bromosuccinimide. The mixture was stirred at room temperature for 30 min, then poured into 2 L of methanol and stirred at high speed for 5 min, and then allowed to settle. The mixture was filtered, washed with methanol several times, and dried to obtain intermediate 2;

[0031] Step A3, 6g of intermediate 2 was added to 100mL of chloroform and completely dissolved, and then 100mL of an aqueous solution of sodium dodecylbenzenesulfonate and sulfuric acid was injected, wherein the concentration of sodium dodecylbenzenesulfonate was 0.01g / mL and the concentration of sulfuric acid was 0.1g / mL. The mixture was stirred and emulsified at a speed of 15000r / min for 0.5h, then heated to 65°C and distilled until no fraction was distilled out, then heated to 75°C and kept warm for 2h, cooled naturally, and the solid content was adjusted to 30% to obtain a reinforced microsphere dispersion.

[0032] Example 2

[0033] This embodiment provides a dispersion of reinforced microspheres, which is prepared by the following steps:

[0034] Step A1, 30g of polyetheretherketoneketone powder was added to 800mL of chloroform and ultrasonically dispersed uniformly, then 300mL of trifluoroacetic acid was added and stirred to dissolve the high-temperature resistant polyaryletherketone, and then 63mL of boron trifluoride etherate and 22mL of ethanedithiol were added. The mixture was reacted at room temperature under nitrogen protection for 48h, and then poured into 3L of ethanol and stirred at high speed for 5min. The mixture was allowed to settle, filtered, washed with ethanol several times, and dried to obtain intermediate 1;

[0035] Step A2, 12.1 g of intermediate 1 was added to 800 mL of chloroform and stirred to dissolve, followed by the addition of 5.8 mL of ethylene glycol and 17 g of N-bromosuccinimide. The mixture was stirred at room temperature for 30 min, then poured into 2 L of methanol and stirred at high speed for 5 min, and then allowed to settle. The mixture was filtered, washed with methanol several times, and dried to obtain intermediate 2;

[0036] Step A3, 7g of intermediate 2 was added to 100mL of chloroform and completely dissolved, and then 100mL of an aqueous solution of sodium dodecylbenzenesulfonate and sulfuric acid was injected, wherein the concentration of sodium dodecylbenzenesulfonate was 0.02g / mL and the concentration of sulfuric acid was 0.1g / mL. The mixture was stirred and emulsified at a speed of 12000r / min for 1h, then heated to 65°C and distilled until no fraction was distilled out, then heated to 75°C and kept warm for 2h, cooled naturally, and the solid content was adjusted to 35% to obtain a reinforced microsphere dispersion.

[0037] Example 3

[0038] This embodiment provides a dispersion of reinforced microspheres, which is prepared by the following steps:

[0039] Step A1, 35g of polyetherketone etherketone ketone powder was added to 800mL of chloroform and ultrasonically dispersed uniformly, then 300mL of trifluoroacetic acid was added and stirred to dissolve the high-temperature resistant polyaryletherketone, and then 64mL of boron trifluoride etherate and 22mL of ethanedithiol were added. The mixture was reacted at room temperature under nitrogen protection for 48h, and then poured into 3L of ethanol and stirred at high speed for 5min. The mixture was allowed to settle, filtered, washed with ethanol several times, and dried to obtain intermediate 1;

[0040] Step A2, 12.2 g of intermediate 1 was added to 800 mL of chloroform and stirred to dissolve, followed by the addition of 6 mL of ethylene glycol and 18 g of N-bromosuccinimide. The mixture was stirred at room temperature for 30 min, then poured into 2 L of methanol and stirred at high speed for 5 min, and then allowed to settle. The mixture was filtered, washed with methanol several times, and dried to obtain intermediate 2;

[0041] Step A3, 8g of intermediate 2 was added to 100mL of chloroform and completely dissolved, and then 100mL of an aqueous solution of sodium dodecylbenzenesulfonate and sulfuric acid was injected, wherein the concentration of sodium dodecylbenzenesulfonate was 0.03g / mL and the concentration of sulfuric acid was 0.1g / mL. The mixture was stirred and emulsified at a speed of 10000r / min for 1h, then heated to 65°C and distilled until no fraction was distilled out, then heated to 75°C and kept warm for 2h, cooled naturally, and the solid content was adjusted to 40% to obtain a reinforced microsphere dispersion.

[0042] Example 4

[0043] This embodiment provides a polytetrafluoroethylene composite dispersion, which is prepared by the following steps:

[0044] To 100 parts by weight of a polytetrafluoroethylene emulsion with a solid content of 60% were added 20 parts by weight of the reinforced microsphere dispersion prepared in Example 1, 0.6 parts by weight of a coupling agent KRN8026, and 0.2 parts by weight of single-walled carbon nanotubes, respectively, and the mixture was stirred and mixed at a speed of 100 r / min for 30 minutes to obtain a polytetrafluoroethylene composite dispersion.

[0045] Example 5

[0046] This embodiment provides a polytetrafluoroethylene composite dispersion, which is prepared by the following steps:

[0047] To 100 parts by weight of a polytetrafluoroethylene emulsion with a solid content of 60% were added 20 parts by weight of the reinforced microsphere dispersion prepared in Example 2, 0.6 parts by weight of a coupling agent KRN8027, and 0.25 parts by weight of single-walled carbon nanotubes, respectively, and the mixture was stirred and mixed at a speed of 120 r / min for 30 minutes to obtain a polytetrafluoroethylene composite dispersion.

[0048] Example 6

[0049] This embodiment provides a polytetrafluoroethylene composite dispersion, which is prepared by the following steps:

[0050] To 100 parts by weight of a polytetrafluoroethylene emulsion with a solid content of 60% were added 20 parts by weight of the reinforced microsphere dispersion prepared in Example 3, 0.6 parts by weight of a coupling agent KRN8026, and 0.3 parts by weight of single-walled carbon nanotubes, respectively, and the mixture was stirred and mixed at a speed of 150 r / min for 30 minutes to obtain a polytetrafluoroethylene composite dispersion.

[0051] Comparative Example 1

[0052] Compared with Example 6, this comparative example is to disperse the polyetherketone etherketone ketone powder directly in deionized water to prepare a polyetherketone etherketone ketone dispersion with a solid content of 40%, and replace the reinforced microsphere dispersion prepared in Example 3 in equal amount. The other materials and steps are the same.

[0053] Comparative Example 2

[0054] Compared with Example 6, this comparative example is different in that the coupling agent KRN8026 is not added, and the other materials and steps are the same.

[0055] Example 7

[0056] This embodiment provides an antistatic and heat-resistant Teflon conveyor belt, which is produced by the following production process:

[0057] The first step is to wash the glass fiber base fabric in methanol and water in sequence, dry it at 100°C, soak it in a lanthanum chloride aqueous solution with a lanthanum concentration of 0.3wt% for 1 hour, take it out and dry it in a blast oven at 100°C for 30 minutes to obtain a pretreated base fabric;

[0058] In the second step, the pretreated base fabric was added to the polytetrafluoroethylene composite dispersion prepared in Example 4 and immersed for 30 minutes. The pretreated base fabric was then baked in a blast oven at temperatures of 100°C, 130°C, 170°C, and 190°C, with the baking time at each temperature being 30 minutes. The fabric was cooled to room temperature and repeated several times until a thickness of 1 mm was reached. The fabric was then transferred to a continuous sintering furnace at 360°C and sintered for 20 minutes. After cooling to room temperature, an antistatic and heat-resistant Teflon conveyor belt was obtained.

[0059] Example 8

[0060] This embodiment provides an antistatic and heat-resistant Teflon conveyor belt, which is produced by the following production process:

[0061] The first step is to wash the glass fiber base fabric in methanol and water in sequence, dry it at 110°C, soak it in a lanthanum chloride aqueous solution with a lanthanum concentration of 0.4wt% for 1.5h, take it out and dry it in a blast oven at 110°C for 30min to obtain a pretreated base fabric;

[0062] In the second step, the pretreated base fabric was added to the polytetrafluoroethylene composite dispersion prepared in Example 5 and immersed for 40 minutes. The pretreated base fabric was then baked in a blast oven at temperatures of 100°C, 130°C, 170°C, and 190°C, with the baking time at each temperature being 30 minutes. The fabric was cooled to room temperature and repeated several times until a thickness of 1 mm was reached. The fabric was then transferred to a continuous sintering furnace at 365°C and sintered for 20 minutes. After cooling to room temperature, an antistatic and heat-resistant Teflon conveyor belt was obtained.

[0063] Example 9

[0064] This embodiment provides an antistatic and heat-resistant Teflon conveyor belt, which is produced by the following production process:

[0065] The first step is to wash the glass fiber base fabric in methanol and water in sequence, dry it at 120°C, soak it in a lanthanum chloride aqueous solution with a lanthanum element concentration of 0.5wt% for 2h, take it out and dry it in a blast oven at 120°C for 30min to obtain a pretreated base fabric;

[0066] In the second step, the pretreated base fabric was added to the polytetrafluoroethylene composite dispersion prepared in Example 6 and immersed for 50 minutes. The pretreated base fabric was then baked in a blast oven at temperatures of 100°C, 130°C, 170°C, and 190°C, with the baking time at each temperature being 30 minutes. The fabric was cooled to room temperature and repeated several times until a thickness of 1 mm was reached. The fabric was then transferred to a continuous sintering furnace at 370°C and sintered for 20 minutes. After cooling to room temperature, an antistatic and heat-resistant Teflon conveyor belt was obtained.

[0067] Comparative Example 3

[0068] This comparative example is different from Example 9 in that the glass fiber base cloth is not soaked in a lanthanum chloride aqueous solution, and the other materials and steps are the same.

[0069] Comparative Example 4

[0070] This comparative example is different from Example 9 in that an aqueous solution of coupling agent KRN8027 of the same concentration is used to replace the aqueous solution of lanthanum chloride, and the remaining materials and steps are the same.

[0071] Comparative Example 5

[0072] This comparative example is different from Example 9 in that the polytetrafluoroethylene composite dispersion prepared in Comparative Example 1 is used to replace the polytetrafluoroethylene composite dispersion prepared in Example 6, and the remaining materials and steps are the same.

[0073] Comparative Example 6

[0074] This comparative example is different from Example 9 in that the polytetrafluoroethylene composite dispersion prepared in Comparative Example 2 is used to replace the polytetrafluoroethylene composite dispersion prepared in Example 6, and the remaining materials and steps are the same.

[0075] The Teflon conveyor belts prepared in Examples 7 to 9 and Comparative Examples 3 to 6 were subjected to performance tests. The tensile strength was tested according to the GB / T 1446-2005 standard; the interlaminar shear strength was tested according to the GB / T 1450.1-2005 standard; and the surface resistance was tested according to the GB / T 3684-2021 standard. The conveyor belt samples were placed in an oven at 400° C. and heated for 1 hour. After removal, the conveyor belts were observed for blistering, thereby testing the heat resistance of the Teflon conveyor belts. The results are shown in Table 1.

[0076] Table 1

[0077] Group Tensile strength MPa Interlaminar shear strength MPa Surface resistance Ω Heat resistance Example 7 95.7 12.6 <![CDATA[8.1×10 6 ]]> No foaming Example 8 98.2 13.8 <![CDATA[4.5×10 6 ]]> No foaming Example 9 102.4 15.1 <![CDATA[2.3×10 6 ]]> No foaming Comparative Example 3 81.3 4.9 <![CDATA[2.8×10 6 ]]> There is foaming Comparative Example 4 84.6 6.5 <![CDATA[2.5×10 6 ]]> No foaming Comparative Example 5 82.1 8.2 <![CDATA[2.3×10 6 ]]> There is foaming Comparative Example 6 88.9 10.4 <![CDATA[3.4×10 6 ]]> There is foaming

[0078] It can be seen from the data in Table 1 that the Teflon conveyor belts prepared in Examples 7-9 not only have excellent antistatic and heat resistance properties, but also have more excellent mechanical properties.

[0079] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0080] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A production process for an antistatic and heat-resistant Teflon conveyor belt, characterized in that: The steps include: The first step is to wash the glass fiber base fabric in methanol and water in sequence, dry it, soak it in a rare earth solution for 1-2 hours, take it out and dry it in a blast oven to obtain a pretreated base fabric; The second step is to add the pretreated base fabric into the polytetrafluoroethylene composite dispersion and immerse it for 30-50 minutes, then carry out gradient baking, cool it to room temperature, repeat several times until the required thickness is reached, and then transfer it to a continuous sintering furnace at 360-370℃ and sinter it for 20 minutes. After cooling to room temperature, the antistatic and heat-resistant Teflon conveyor belt is obtained. The polytetrafluoroethylene composite dispersion is composed of a mixture of polytetrafluoroethylene emulsion, a reinforced microsphere dispersion, a high-temperature resistant silane coupling agent, and carbon nanotubes in a mass ratio of 100:100:0.6:0.2-0.3, and the solid content of the polytetrafluoroethylene emulsion is 60%; The enhanced microsphere dispersion is prepared by the following steps: Step A1, adding high temperature resistant polyaryletherketone powder to chloroform and ultrasonically dispersing it, then adding trifluoroacetic acid and stirring to dissolve it, then adding boron trifluoride etherate and ethanedithiol, reacting for 48 hours at room temperature under nitrogen protection, then pouring it into ethanol and stirring for 5 minutes, then standing to precipitate, filtering it, washing it with ethanol several times, and drying it to obtain intermediate 1; Step A2: Add intermediate 1 to chloroform and stir to dissolve, then add ethylene glycol and N-bromosuccinimide, stir and react at room temperature for 30 minutes, pour into methanol and stir for 5 minutes, then let stand to precipitate, filter, wash with methanol several times, and dry to obtain intermediate 2; Step A3: After the intermediate 2 is completely dissolved in chloroform, an aqueous solution of sodium dodecylbenzenesulfonate is injected, and the mixture is stirred and emulsified for 0.5-1 h. The mixture is then heated to 65° C. and distilled until no fraction is evaporated. The mixture is then heated to 75° C. and kept warm for 2 h. After natural cooling, a reinforced microsphere dispersion is obtained.

2. The production process of an antistatic heat-resistant Teflon conveyor belt according to claim 1, characterized in that: The rare earth solution is a lanthanum chloride aqueous solution, and the concentration of lanthanum element in the lanthanum chloride aqueous solution is 0.3-0.5wt%.

3. The production process of an antistatic heat-resistant Teflon conveyor belt according to claim 1, characterized in that: The high temperature resistant silane coupling agent is coupling agent KRN8026 or coupling agent KRN8027.

4. The production process of an antistatic heat-resistant Teflon conveyor belt according to claim 1, characterized in that: The dosage ratio of the high-temperature resistant polyaryletherketone powder, chloroform, trifluoroacetic acid, boron trifluoride etherate, ethanedithiol and ethanol is 25-35g:800mL:300mL:62-64mL:22mL:3L; the high-temperature resistant polyaryletherketone powder is any one of polyetherketoneketone, polyetheretherketoneketone and polyetherketoneetherketoneketone.

5. The production process of an antistatic heat-resistant Teflon conveyor belt according to claim 1, characterized in that: The usage ratio of the intermediate 1, chloroform, ethylene glycol, N-bromosuccinimide and methanol is 12-12.2 g:800 mL:5.6-6 mL:16-18 g:2 L.

6. The production process of an antistatic heat-resistant Teflon conveyor belt according to claim 1, characterized in that: The usage ratio of the intermediate 2, chloroform and sodium dodecylbenzenesulfonate aqueous solution is 6-8 g:100 mL:100 mL.

7. The production process of an antistatic heat-resistant Teflon conveyor belt according to claim 1, characterized in that: The temperature of the gradient baking was set to 100° C., 130° C., 170° C., and 190° C., and the baking time at each temperature was 30 min. 8.An antistatic heat-resistant Teflon conveyor belt, characterized in that: Prepared according to the production process according to any one of claims 1 to 7.