Nano indium-iron microcrystalline adhesive and curing process

Abstract

The invention discloses a nano indium-iron microcrystalline adhesive and a curing process, and the nano indium-iron microcrystalline adhesive comprises the following components in parts by weight: 50-55 parts of an epoxy resin mixture, 17-22 parts of a curing agent and 5-10 parts of a diluent, the toughening agent is 15-20 parts of nano indium-iron microcrystal which contains more than 55% (wt%) of indium, more than 10% (wt%) of aluminum and more than 65% (wt%) of indium and aluminum, has the height of not more than 5000 nm, is approximately elliptical, has the minimum length of the ellipse of more than 300 nm and the maximum length of not more than 5000 nm and has a spherical or approximately spherical or approximately elliptical top, and the balance of a coupling agent, a stabilizer and the like, so that the nano indium-iron microcrystal adhesive is formed. The method comprises the following steps: uniformly smearing nano indium-iron microcrystalline glue on a to-be-connected surface of a flat and clean carbon fiber, aligning and pre-fixing the connected surface by adopting a clamp, and putting in a curing oven; an opening is formed in the side wall of the curing oven, the output end of the ultrasonic transmitter is aligned with the opening in the side wall, and the input power supply of the ultrasonic transmitter is 220V 50Hz alternating current; setting the working temperature and the heat preservation time of the curing oven; the pre-fixed carbon fiber is not in direct contact with the ultrasonic transmitter; the ultrasonic transmitter starts to work, and the curing oven starts to heat; and when the temperature of the curing oven exceeds 60 DEG C, the ultrasonic transmitter stops working. The curing oven continues to heat to a set temperature; keeping the temperature for 20 minutes; and the small carbon fiber roller is formed.

Description

Technical Field

[0001] The invention relates to nano-indium iron microcrystalline glue and a curing process. Background Art

[0002] As we all know, adhesive bonding utilizes molecular physical and chemical forces to effectively connect the adhesive across the entire bond surface. This effectively distributes the load evenly across the bond surface, eliminating the localized stress concentrations associated with spot welding, casting, and bolting, resulting in higher shear strength. Adhesive bonding allows for the connection and curing of carbon fibers of the same type, different types, and varying thicknesses, without electrochemical corrosion. Using different adhesive compositions can yield varying strengths and properties.

[0003] Small carbon fiber rollers made of carbon fiber using glue connection method are prone to fretting fatigue and failure when the speed exceeds 1000n / min. If the glue connection can reduce fretting fatigue, the working reliability of small carbon fiber rollers can be greatly improved.

[0004] The nano-indium iron microcrystalline adhesive and curing process of the present invention are developed to effectively reduce the fretting fatigue of a small carbon fiber roller.

[0005] Literature search and patent search results show that there is no relevant patent literature report on the addition of nano-indium iron microcrystalline adhesive containing more than 60% (wt%) indium and more than 70% (wt%) indium and iron in total and the curing process. Summary of the Invention

[0006] The task of the present invention is to provide a nano-indium iron microcrystalline adhesive and a curing process. The task of the present invention is achieved through the following technical solution: The nano-indium iron microcrystalline adhesive of the present invention comprises the following components in parts by weight: 50-55 parts of an epoxy resin mixture, 17-22 parts of a curing agent, 5-10 parts of a diluent, and a toughening agent, which is 15-20 parts of nano-indium iron microcrystals containing more than 55% (wt%) of indium and more than 10% (wt%) of aluminum, and more than 65% (wt%) of indium and aluminum in total, with a height of no more than 5000nm, an approximately elliptical shape, a minimum length of the ellipse greater than 300nm and a maximum length of no more than 5000nm, and a spherical or approximately spherical or approximately elliptical top; the remaining components are: a coupling agent and a stabilizer, etc., to form a nano-indium iron microcrystalline adhesive.

[0007] The nano-indium iron microcrystalline adhesive of the present invention comprises the following components by weight: 45-50 parts of alicyclic epoxy resin, 5-10 parts of polyurethane-modified epoxy resin, 12-17 parts of aliphatic polyamide, 1-5 parts of imidazole adduct, 5-10 parts of dimethylethylenedioxycyclohexane, and a toughening agent, which is 15-20 parts of nano-indium iron microcrystals containing more than 55% (wt%) of indium, more than 10% (wt%) of aluminum, and more than 65% (wt%) of indium and aluminum combined, with a height of no more than 5000nm, a nearly elliptical shape, a minimum length of the ellipse greater than 300nm and a maximum length of no more than 5000nm, and a spherical or nearly spherical or nearly elliptical top. The remaining components are anilinemethyltriethylsilane and aromatic amine, thereby forming a nano-indium iron microcrystalline adhesive.

[0008] Evenly apply nano-indium iron microcrystalline adhesive to the flat and clean carbon fiber surfaces to be joined. Use a fixture to align and pre-fix the joining surfaces, then place them in a curing oven. Align the output end of an ultrasonic transmitter with a hole in the sidewall of the curing oven, which is powered by 220V 50Hz AC. Set the curing oven's operating temperature and hold time. Ensure there is no direct contact between the pre-fixed carbon fibers and the ultrasonic transmitter. The ultrasonic transmitter activates, and the curing oven begins heating. When the curing oven temperature exceeds 60°C, the ultrasonic transmitter stops. Continue heating the curing oven to the set temperature, then hold for 20 minutes to form a small carbon fiber roller.

[0009] After years of in-depth research, the inventors have discovered that small carbon fiber rollers made by gluing carbon fibers are prone to fretting fatigue and failure when operated continuously at speeds exceeding 1000 n / min for long periods of time. The addition of a toughening agent, nano-indium iron microcrystals containing more than 55% (wt%) indium, more than 10% (wt%) aluminum, and more than 65% (wt%) indium and aluminum combined, with a height of no more than 5000 nm and a spherical or nearly spherical or nearly elliptical top, with a minimum elliptical length greater than 300 nm and a maximum length no greater than 5000 nm, can reduce fretting fatigue and improve the operating reliability of small carbon fiber rollers. Therefore, the study of a nano-indium iron microcrystal glue and curing process that can reduce fretting fatigue has important application value and practical significance for promoting the long-term continuous operation of small carbon fiber rollers at speeds exceeding 1000 n / min.

[0010] Compared with the prior art, the present invention has significant improvements in the related technologies of a nano-indium iron microcrystalline adhesive and a curing process: ① A nitrogen-phosphorus flame-retardant epoxy resin curing agent, an epoxy resin prepreg and a carbon fiber composite material (CN202411807599.X). The nitrogen-phosphorus flame-retardant epoxy resin curing agent contains a benzene ring group and nitrogen and phosphorus elements. By adopting a curing agent with a specific structure, the curing agent can cure the epoxy resin for a long time at room temperature and can quickly cure the epoxy resin at high temperature, thereby extending the operability time of preparing the carbon fiber composite material. In addition, the nitrogen and phosphorus elements in the molecular structure of the curing agent can improve the flame retardant properties of the epoxy resin, so that the prepared epoxy resin prepreg has high fire resistance. The present invention has significantly different components from the invention of CN202411807599.X, and the corresponding technologies are also significantly different. ② A toughened epoxy resin plastic mold and its preparation method (CN202510140218.5), in which a modified nano-carbon fiber component is added to the epoxy resin matrix. Adding it to the epoxy resin matrix can effectively achieve stress dispersion and improve the toughness of the material. On this basis, the nano-carbon fiber material is modified, and a borane structure and fluorine element are introduced on its surface, and its surface is epoxidized so that the nano-carbon fiber can participate in the curing of the epoxy resin and improve the bonding strength with the epoxy resin matrix. The fluorine element and borane group introduced in this process can further enhance the stability and friction resistance of the epoxy resin and reduce the damage to the mold during use; CN202510140218.5 is significantly different from the components of the present invention, and the corresponding technology is also significantly different. ③ A carbon fiber-reinforced acid- and alkali-resistant PPS material and its preparation method (CN202411791903.6). The carbon fiber-reinforced acid- and alkali-resistant PPS material comprises the following components by weight: 40-80 parts PPS, 5-10 parts modified carbon fiber, 1-5 parts modified glass fiber, 1-5 parts coupling agent, 1-5 parts antioxidant, and 1-10 parts lubricant. The modified carbon fiber of this invention has a phenylene sulfide structure and a star-shaped structure, exhibiting good compatibility with the other components and forming a more regular, compact three-dimensional network structure with the other components, thereby enhancing product stability and improving various properties such as mechanical properties and acid and alkali resistance. Furthermore, by introducing phenylene sulfide and benzyl alcohol structures into the modified glass fiber, this invention effectively improves interfacial compatibility and bonding strength, enhances compatibility with other components, and strengthens the bonding between the components, thereby further enhancing the dispersibility and stability of the system and improving the performance of the PPS material. The components of CN202411791903.6 differ significantly from those of the present invention, and the corresponding technologies are also significantly different. ④ Patented technology "Prepreg, fiber-reinforced composite material and method for manufacturing fiber-reinforced composite material (CN202380054791.3), Main claim content: A prepreg comprising a matrix resin composition containing at least the following components (A) to (C) and carbon fibers, component (A): epoxy resin, component (B): aliphatic polycarbonate resin, component (C): curing agent"; "A high-temperature resistant carbon fiber reinforced phenolic resin composite material and preparation method thereof (CN202411726500.3), Main claim: 1. A preparation method of a high-temperature resistant carbon fiber reinforced phenolic resin composite material, characterized in that it comprises the following steps: (1) placing short-cut carbon fibers in a high-temperature furnace for high-temperature oxidation treatment, then immersing them in an ethanol solution containing a silane coupling agent, then taking them out, washing them with ethanol, and drying them to obtain dry short-cut carbon fibers; (2) The dried chopped carbon fibers, antioxidant, dispersant and water are mixed and then uniformly mixed by ultrasonic and mechanical stirring, and then vacuum filtered and dried to obtain a carbon fiber embryo; (3) the carbon fiber embryo is immersed in a phenolic resin impregnation solution prepared by ethanol, phenolic resin, boric acid and curing agent, and after impregnation, the carbon fiber embryo is placed in a mold for molding and curing to obtain the high-temperature resistant carbon fiber reinforced phenolic resin composite material"; "A method for preparing carbon fiber composite materials by interface modification (CN202411764768.6), main claim: 1. A method for preparing carbon fiber composite materials by interface modification, characterized in that the steps are as follows: (1) the carbon fibers are desized at a high temperature, the carbon fiber desizing treatment temperature is 200-500 ℃, and the time is 0.5-5 h; (2) activating and soaking the desized carbon fiber with a hydrogen peroxide solution of 5-30% by mass, the soaking time is not less than 30 minutes, and the soaking temperature is 50℃-65℃ to obtain CFO; (3) mixing 4,4-diaminodiphenyl ether and 3,5-diaminobenzoic acid in a certain molar ratio in N,N-dimethylacetamide, and stirring under nitrogen atmosphere; adding pyromellitic anhydride to the above solution, stirring at 0-20℃, and obtaining a carbon fiber with a mass fraction of 0 .2%-5% polyimide acid solution; (4) adding triethylamine to the polyimide acid solution obtained in the above (3), stirring at room temperature to obtain a polyimide acid salt solution; the molar ratio of triethylamine to pyromellitic anhydride in step (3) is 100:10-50; (5) subjecting CFO to ultrasonic treatment in the polyimide acid salt solution obtained in the previous step for a certain period of time to obtain CFO-PAAs, and the ultrasonic immersion time of CFO in the polyimide acid salt solution is 1-180 min; (6) placing CFO-PAAs in a high-temperature vacuum oven, heating at 120°C for 1h, 200°C for 1h, and 300°C for 1h, respectively, to finally obtain CFO-PI-COOH". "A carbon fiber surface treatment process (CN202411654584.4) The main claim: A carbon fiber surface treatment process, characterized in that it comprises the following steps: S1, adding melamine to tetrahydrofuran, adding carboxylated carbon fiber and a condensing agent, heating to 50°C-60°C, stirring for 3 hours-4 hours, washing, and drying to obtain melamine-modified carbon fiber; S2, adding nano-silica to DMF, ultrasonically treating, adding silane coupling agent KH550 and succinic anhydride, stirring for 3 hours-5 hours, washing, and drying to obtain modified silica; S3, adding modified silica to DMF, adding melamine-modified carbon fiber and a condensing agent, heating to 90°C-100°C, stirring for 4 hours-5 hours, washing, and drying to obtain modified silica. The invention relates to a method for preparing a carbon fiber having a strong adhesion and a method for preparing the same (CN202411801429.0). The invention further ... Claim: A carbon fiber surface treatment process, characterized in that it comprises the following steps: S1, adding melamine to tetrahydrofuran, adding carboxylated carbon fiber and a condensing agent, heating to 50-60°C, stirring for 3-4 hours, washing, and drying to obtain melamine-modified carbon fiber; S2, adding nano-silica to DMF, ultrasonically treating, adding silane coupling agent KH550 and succinic anhydride, stirring for 3-5 hours, washing, and drying to obtain modified silica; S3, adding modified silica to DMF, adding melamine-modified carbon fiber and a condensing agent, heating to 90-100°C, stirring for 4-5 hours, washing, and drying to obtain modified silica. , dried to obtain surface-treated carbon fiber"; "A high-strength carbon fiber winding epoxy resin composition and preparation method thereof (CN202411903583.9) Principal claim: A high-strength carbon fiber winding epoxy resin composition, characterized by comprising the following raw materials in parts by weight: 45-50 parts of a modified epoxy resin, 6-8 parts of a composite curing agent, 1-2 parts of a compatibilizer, 0.1-0.5 parts of a retarder, 0.5-1 parts of a defoaming agent, and 1-2 parts of a nanofiller"; "A low-hygroscopic, medium-temperature curing, one-component epoxy adhesive suitable for bonding special-shaped composite materials and preparation method thereof (CN202411713792.7) Sole claim: A low-hygroscopic, medium-temperature curing, one-component epoxy adhesive suitable for bonding special-shaped structural composite materials, characterized in that the epoxy adhesive is composed of 70 to 90 parts by weight of bisphenol A epoxy resin, 10 to 30 parts of multifunctional epoxy resin, 10 to 30 parts of core-shell toughened epoxy resin, 10 to 20 parts of polysulfide rubber modified resin, 8 to 12 parts of dicyandiamide, 1 to 2 parts of 2-ethyl-4-methylimidazole and 7 to 9 parts of fumed silica. The composition is significantly different from the nano-indium iron microcrystalline adhesive and curing process of the present invention, and the corresponding technology is also significantly different. ⑤ Papers "Development of Carbon Fiber Adhesive for Reinforcement of Steel Structures", "An Improved Carbon Fiber Adhesive Roller", "Mechanical Properties of Magnesium Phosphate Inorganic Adhesive After High Temperature and In-Surface Shear Properties of Carbon Fiber Cloth Adhesives The adhesive compositions and processes involved in articles such as "Experimental Research," "Study and Application of Hybrid Bonding Strength of Carbon Fiber Composite Materials with Glue and Rivet," "Study of Phase Change Thermal Interface Materials Containing Paraffin Wax and Silica Nanocapsules and Carbon Fiber," "Preparation and Performance Comparative Study of a Modified Carbon Fiber Composite Adhesive," "Study of Adhesive Properties of Carbon Fiber Reinforced Epoxy Resin Composites for UAV Wings," "Study of Mechanical Properties of Gelatin-Functionalized Carbon Nanoparticles Reinforced Epoxy Resin and Carbon Fiber Composites," "Effects of Different Surface Debonding Processes on Carbon Fiber Bulk and Surface Structure," and "Study of Adhesive Reinforcement Technology and Joint Performance of Carbon Fiber Laminates" are significantly different from the compositions of the nano-indium iron microcrystalline adhesive and curing process of the present invention, and the corresponding technologies are also significantly different. Therefore, the relevant technologies of the present invention have significant improvements.

[0011] The beneficial effects of the present invention are that it can reduce the micro-motion fatigue of a small carbon fiber roller that operates continuously at high speed for a long time, can greatly improve the working reliability of the small carbon fiber roller, is easy to use, has a simple structure, strong applicability, and has a suitable application cost, and is suitable for mass production. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the curing process structure of a nano-indium iron microcrystalline adhesive and the curing process according to Example 1 of the present invention.

[0013] Figure 2 This is a 200,000 magnified scanning electron microscope photograph of a sample connected by a nano-indium iron microcrystalline adhesive and a curing process adhesive according to Example 2 of the present invention.

[0014] In the accompanying drawings, 1-curing oven, 2-clamp, 3-carbon fiber roller, 4-ultrasonic transmitter, 5-bracket. DETAILED DESCRIPTION

[0015] The present invention will be further described below with reference to the accompanying drawings.

[0016] Figure 1This is a schematic diagram of the curing process structure of a nano-indium iron microcrystalline adhesive and its curing process according to Example 1 of the present invention. Figure 2 This is a scanning electron microscope photograph of a sample connected by a nano-indium iron microcrystalline adhesive and a curing process adhesive according to Example 2 of the present invention; in the figure, 1 is a curing furnace, 2 is a clamp, 3 is a carbon fiber roller, 4 is an ultrasonic transmitter, and 5 is a bracket. Example 1

[0017] The nano-indium iron microcrystalline adhesive of the present invention comprises the following components by weight: 50-55 parts of an epoxy resin mixture, 17-22 parts of a curing agent, 5-10 parts of a diluent, and a toughening agent, which is 15-20 parts of nano-indium iron microcrystals containing more than 55% (wt%) of indium, more than 10% (wt%) of aluminum, and more than 65% (wt%) of indium and aluminum in total, with a height of no more than 5000nm and a nearly elliptical shape, a spherical or nearly spherical or nearly elliptical top with a minimum length of the ellipse greater than 300nm and a maximum length of no more than 5000nm. The remaining components include a coupling agent and a stabilizer, thereby forming a nano-indium iron microcrystalline adhesive.

[0018] Evenly apply nano-indium iron microcrystalline adhesive to the flat and clean carbon fiber surfaces to be joined. Use a fixture to align and pre-fix the joining surfaces, then place them in a curing oven. The oven has a hole in the sidewall, and the bracket height is adjusted so that the output end of the ultrasonic transmitter is aligned with the hole in the sidewall. The ultrasonic transmitter input power is 220V 50Hz AC. The curing oven's operating temperature and holding time are set. The pre-fixed carbon fibers are not in direct contact with the ultrasonic transmitter. The ultrasonic transmitter activates, and the curing oven begins heating. When the curing oven temperature exceeds 60°C, the ultrasonic transmitter stops. The curing oven continues heating to the set temperature, which is then held for 20 minutes. This forms a small carbon fiber roller. Example 2

[0019] The nano-indium iron microcrystalline adhesive of the present invention comprises the following components in parts by weight: 45-50 parts of alicyclic epoxy resin, 5-10 parts of polyurethane-modified epoxy resin, 12-17 parts of aliphatic polyamide curing agent, 1-5 parts of imidazole adduct, 5-10 parts of dimethylethylenedioxycyclohexane as a diluent, 15-20 parts of nano-indium iron microcrystals as a toughening agent, which contain more than 55% (wt%) of indium, more than 10% (wt%) of aluminum, and more than 65% (wt%) of indium and aluminum in total, and are approximately elliptical in shape with a height not exceeding 5000nm, a minimum length of the ellipse exceeding 300nm and a maximum length not exceeding 5000nm, and a spherical or approximately spherical or approximately elliptical top. The remaining components include anilinemethyltriethylsilane as a coupling agent, and aromatic amine as a stabilizer, thereby forming a nano-indium iron microcrystalline adhesive.

[0020] The connecting surface of the carbon fiber is cleaned and degreased to form a smooth and clean carbon fiber connecting surface, and nano-indium iron microcrystalline glue is evenly coated on the carbon fiber connecting surface. The connecting surface is aligned and pre-fixed with a clamp and placed in a curing furnace; there is an opening in the side wall of the curing furnace, and the height of the bracket is adjusted. The output end of the ultrasonic transmitter is aligned with the hole in the side wall. The input power of the ultrasonic transmitter is 220V 50Hz AC; the working temperature and holding time of the curing furnace are set; the pre-fixed carbon fiber has no direct contact with the ultrasonic transmitter; the ultrasonic transmitter starts working and the curing furnace starts heating; the curing furnace heating temperature rises by about 1°C / min. When the temperature of the curing furnace exceeds 60°C, the ultrasonic transmitter stops working; the curing furnace continues to heat to the set temperature; the temperature is kept for 20 minutes to form a small carbon fiber roller. Figure 2 A 200,000-magnification scanning electron microscope image of a sample of carbon fiber glue connection.

Claims

1. A nano-indium iron microcrystalline glue, characterized in that: The nano-indium iron microcrystalline adhesive comprises the following components in parts by weight: 50-55 parts of an epoxy resin mixture, 17-22 parts of a curing agent, 5-10 parts of a diluent, and a toughening agent, which is 15-20 parts of nano-indium iron microcrystals containing more than 55% (wt%) of indium, more than 10% (wt%) of aluminum, and more than 65% (wt%) of indium and aluminum in total, with a height of no more than 5000nm and an approximately elliptical shape, a spherical or approximately spherical or approximately elliptical top with a minimum length of the ellipse greater than 300nm and a maximum length of no more than 5000nm. The remaining ingredients are: a coupling agent and a stabilizer, etc., to form a nano-indium iron microcrystalline adhesive.

2. The curing process of nano-indium iron microcrystalline glue according to claim 1, characterized in that: The curing process is as follows: evenly apply nano-indium iron microcrystalline adhesive to the flat and clean carbon fiber surfaces to be joined, align and pre-fix the joining surfaces using a fixture, and place the pieces in a curing oven; a hole is provided in the side wall of the curing oven, and the output end of an ultrasonic transmitter is aligned with the hole in the side wall. The input power of the ultrasonic transmitter is 220V 50Hz AC; and the operating temperature and holding time of the curing oven are set. The pre-fixed carbon fiber has no direct contact with the ultrasonic transmitter. The ultrasonic transmitter starts working and the curing oven starts heating. When the temperature of the curing oven exceeds 60°C, the ultrasonic transmitter stops working. The curing oven continues to heat to the set temperature and keeps warm for 20 minutes to form a small carbon fiber roller. The toughening agent of the present invention is a nano-indium iron microcrystal containing more than 55% (wt%) indium and more than 10% (wt%) aluminum, and more than 65% (wt%) in total, with a height not exceeding 5000nm and an approximately elliptical shape, a minimum elliptical length greater than 300nm and a maximum length not exceeding 5000nm, and a spherical or approximately spherical or approximately elliptical top.

3. The curing process of nano-indium iron microcrystalline adhesive according to claim 1, characterized in that: The curing process is as follows: evenly apply nano-indium iron microcrystalline adhesive to the flat and clean carbon fiber surfaces to be joined, align and pre-fix the joining surfaces using a fixture, and place the pieces in a curing oven; a hole is provided in the side wall of the curing oven, and the output end of an ultrasonic transmitter is aligned with the hole in the side wall. The input power of the ultrasonic transmitter is 220V 50Hz AC; and the operating temperature and holding time of the curing oven are set. The pre-fixed carbon fibers are not in direct contact with the ultrasonic transmitter. The transmitter starts operating and the curing oven begins heating. When the curing oven temperature exceeds 60°C, the transmitter stops operating. The curing oven continues heating to the set temperature and maintains this temperature for 20 minutes, forming a small carbon fiber roller.

4. A nano-indium iron microcrystalline glue, characterized by: The nano-indium iron microcrystalline adhesive comprises the following components in parts by weight: 45-50 parts of alicyclic epoxy resin, 5-10 parts of polyurethane modified epoxy resin, 12-17 parts of aliphatic polyamide curing agent, 1-5 parts of imidazole adduct, 5-10 parts of dimethyldioxyethylene cyclohexane as a diluent, 15-20 parts of nano-indium iron microcrystals which contain more than 55% (wt%) of indium and more than 10% (wt%) of aluminum and more than 65% (wt%) of indium and aluminum in total, a height of not more than 5000nm, an approximately elliptical shape, a minimum length of the ellipse greater than 300nm and a maximum length of not more than 5000nm, and a spherical or approximately spherical or approximately elliptical top; and the remaining components are: anilinemethyltriethylsilane as a coupling agent, aromatic amine as a stabilizer, etc., to form a nano-indium iron microcrystalline adhesive.

5. The curing process of nano-indium iron microcrystalline adhesive according to claim 4, characterized in that: The curing process is as follows: the connecting surface of the carbon fiber is cleaned and degreased to form a flat and clean carbon fiber connecting surface, nano-indium iron microcrystalline glue is evenly coated on the carbon fiber connecting surface, and the connecting surface is aligned and pre-fixed with a clamp and placed in a curing furnace; there is an opening in the side wall of the curing furnace, and the height of the bracket is adjusted. The output end of the ultrasonic transmitter is aligned with the hole in the side wall, and the input power supply of the ultrasonic transmitter is 220V 50Hz AC; the working temperature and insulation time of the curing furnace are set; the pre-fixed carbon fiber has no direct contact with the ultrasonic transmitter; the ultrasonic transmitter starts working and the curing furnace starts heating; the curing furnace heats up at a temperature of about 1°C / min. When the temperature of the curing furnace exceeds 60°C, the ultrasonic transmitter stops working; the curing furnace continues to heat to the set temperature; insulation for 20 minutes; and a small carbon fiber roller is formed.

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