A carbon composite material high-performance shoe material and preparation method thereof

Abstract

The present invention discloses a carbon composite material high-performance shoe material and a preparation method thereof, and relates to the technical field of shoe material preparation, and comprises the following steps: step one, raw material processing: using pretreated carbon fiber filaments as raw materials for preparing shoe material blanks; step two, weaving of shoe material blanks: making shoe material blanks through a molding process; step three, surface treatment of shoe material blanks; step four, preparation of shoe materials; step five, cooling treatment; step six, finishing and shaping. The present invention can make the prepared shoe material have excellent interface performance, high toughness, large bending angle, easy to fit the human body structure, avoid blistering and degumming problems while meeting the requirements for foot wrapping, and effectively release the thermal stress in the shoe material manufacturing process by means of oscillation cooling, prevent the shoe material from deformation or cracking, so that the prepared shoe material has higher quality.

Description

Technical Field

[0001] The present invention relates to the technical field of shoe material preparation, and in particular to a carbon composite material high-performance shoe material and a preparation method thereof. Background Art

[0002] Professional sports shoes are indispensable tools for athletes when they are on the field, such as golf shoes, football shoes, basketball shoes and running shoes. Lightweight, comfortable, durable and safe shoes can provide great help for athletes. The uppers of existing professional sports shoes are mostly made of leather, PU and other materials in winter. Although such materials have a long history of use and mature application technology, they are still heavy and have poor foot feel due to their high density. In addition, such materials have poor strength, acid and alkali resistance, and microbial resistance. They are extremely easy to damage and cannot be repaired in harsh environments, resulting in such shoes being expensive and having a very high damage rate. In summer, for the sake of breathability, the uppers are mostly made of fabric. In professional sports, shoes experience a lot of friction, and fabric uppers are very prone to wear and tear. Therefore, lighter and stronger has become an important research direction for professional sports shoes.

[0003] Carbon fiber has the characteristics of low density, high strength and strong durability. The composite materials prepared with it as reinforcement have excellent performance and have been widely used in the fields of aerospace, automobile manufacturing and professional running shoe soles. However, the resin matrix of existing carbon fiber composite materials mostly uses thermosetting resin. Although it meets the basic requirements of light weight and high strength, it still has poor bending performance and cannot be repaired when damaged, resulting in huge maintenance costs in the later stage of the product. In addition, the preparation and application of thermosetting resin are not environmentally friendly.

[0004] Since thermoplastic resins have the advantages of strong toughness and environmental protection, and their bending properties are enhanced after being compounded with carbon fiber, they are often used to replace thermosetting resins as the resin matrix of carbon fiber composite materials. However, in actual use, it is found that when existing thermoplastic resins are combined with carbon fiber composite materials to prepare shoe materials, the surface of the carbon fiber material is smooth, and the bonding with the thermoplastic resin is not strong enough. At the same time, the shoe material blanks prepared from the carbon fiber material are full of gaps, and the insufficient bonding with the thermoplastic resin will cause bubbling problems, resulting in the prepared shoe material being easy to degumming and bubbling, which seriously affects the performance of the finished product. For this reason, a carbon composite high-performance shoe material and a preparation method thereof are proposed. Summary of the invention

[0005] The object of the present invention is to provide a carbon composite material high-performance shoe material and a preparation method thereof, so as to solve the problems raised in the above background technology.

[0006] To achieve the above object, the present invention provides the following technical solution: a method for preparing a carbon composite material high-performance shoe material, comprising the following steps:

[0007] Step 1, raw material processing: using carbon fiber filaments as raw materials for preparing shoe material blanks, and pre-treating the carbon fiber filaments by chemical degreasing, surface modification and infrared drying;

[0008] Step 2, weaving of the shoe material blank: the carbon fiber filament raw material pretreated in step 1 is made into a shoe material blank through a weaving molding process;

[0009] Step 3, surface treatment of the shoe material blank: sending the shoe material blank prepared in step 2 into a low-temperature plasma device, so that at least two nozzles in the low-temperature plasma jet device perform ion spraying on the surface of the shoe material blank at an angle perpendicular to the binding yarn;

[0010] Step 4, preparation of shoe materials: placing the shoe material blank processed in step 3 in a container, filling it with TPU resin slurry, and then placing it in a hot press, during which the container is kept airtight and heated and pressurized, so that the TPU resin slurry is fully filled into the internal gap of the shoe material blank to form a thermoplastic carbon material upper in a resin-rich state, and after hot pressing, the upper and lower surfaces are flattened, and then TPU films are attached to the upper and lower surfaces, and then the container is sent into a hot press for heating and pressurization to obtain a thermoplastic carbon material upper;

[0011] Step 5, cooling treatment: the thermoplastic carbon material upper obtained in step 4 is cooled by a step-by-step cooling process;

[0012] Step 6, trimming and shaping: trimming the periphery of the thermoplastic carbon material upper after cooling in step 5, cutting off the resin material overflowing from the periphery of the thermoplastic carbon material upper for reuse, and then curling the trimmed thermoplastic carbon material upper into a tube using a curling process.

[0013] Preferably, the pretreatment of the carbon fiber filament raw material in step 1 is specifically as follows:

[0014] Degreasing: Pour a sodium hydroxide solution with a content of 2%-8% into a heating container, then immerse the carbon fiber filaments in the sodium hydroxide solution, and heat the sodium hydroxide solution to 50℃-70℃ and soak for 20-40min. During the soaking process, mechanical stirring or centrifugal stirring is used to make the carbon fiber filaments fully contact with the sodium hydroxide to remove the grease on the surface of the carbon fiber filaments;

[0015] Surface modification: prepare a nitric acid solution with a concentration of 40%-60%, and soak the degreased carbon fiber filaments in the sodium nitrate solution at a temperature of 50℃-70℃ for 35-55min;

[0016] Drying: The degreased carbon fiber filaments are sent to the infrared drying equipment, and the thermal effect of infrared rays is used to dry the carbon fiber filaments at a temperature of 100℃-140℃ for 10-30 minutes to completely remove the moisture on the surface of the single fiber in the carbon fiber filaments;

[0017] Among them, after the degreasing and surface modification of the carbon fiber filaments are completed, the surface of the carbon fiber filaments needs to be rinsed with flowing water to remove the sodium hydroxide and nitric acid remaining on the surface of the carbon fiber filaments.

[0018] Preferably, in step 2, the specific steps of using a three-dimensional braiding machine to prepare a shoe material blank are:

[0019] According to the use requirements of the shoe material, use drawing software to draw the two-dimensional or three-dimensional structure of the shoe material to determine the structure of the shoe material;

[0020] According to the determined shoe material structure, an organizational chart is prepared to determine the knitting machine parameters, wherein the knitting parameters include but are not limited to the knitting density, the number of layers and the knitting angle;

[0021] The carbon fiber filaments are laid on a three-dimensional braiding machine according to a set path and angle, and the three-dimensional braiding machine is made to weave according to the set weaving parameters to obtain a two-dimensional or three-dimensional shoe material blank.

[0022] Preferably, in step three, the low-temperature plasma jet equipment uses an oxygen mixture consisting of oxygen and argon, wherein the oxygen content is 1%-10%, and the argon content is 90%-99%. The low-temperature plasma jet equipment performs vertical transportation at a power of 500-1500W, a processing speed of 10-50mm / s, and a continuous processing time of 1-10min.

[0023] Preferably, in step 4, the composite treatment of the shoe material blank is specifically as follows:

[0024] The TPU resin material is sent into a heating container and heated to 150°C-300°C to heat the TPU resin material into a molten fluid state;

[0025] Then, the shoe material blank is immersed in the molten TPU resin, the heating container is kept sealed, and the heating container is kept at a pressure of 0.1-5MPa for 20-40 minutes, so that the fluid TPU resin is completely filled into the gaps of the shoe material blank to form a thermoplastic carbon material upper in a resin-rich state;

[0026] After the thermoplastic carbon material upper is naturally cooled to 100°C-180°C in the container, TPU film is directly attached to both sides of the thermoplastic carbon material upper and sent to a hot press for hot pressing treatment;

[0027] The thermoplastic carbon material upper with TPU film is heated to 130°C-220°C in a hot press, and a pressure of 10-50MPa is applied to keep the thermoplastic carbon material upper with TPU film in a heated and pressurized environment for 20-40 minutes to obtain a thermoplastic carbon material upper.

[0028] Preferably, in step 5, the cooling treatment of the thermoplastic carbon material upper processed in step 4 is specifically as follows:

[0029] The thermoplastic carbon shoe upper passes through the positioning area under the floating frame, and the floating frame is floated above the liquid surface of the cooling tank, so that the thermoplastic carbon shoe upper is completely immersed in the top position of the coolant, and the cooling position of the thermoplastic carbon shoe upper is positioned and guided;

[0030] A temperature control assembly is arranged in the cooling tank to regulate the temperature of the coolant in the cooling tank, so that the liquid in the cooling tank can be cooled step by step, and the thermoplastic carbon material upper can be cooled step by step in the cooling tank;

[0031] An ultrasonic transmitter is arranged at the bottom of the cooling tank, and the ultrasonic transmitter performs ultrasonic vibration on the water in the cooling tank at a preset temperature range, so that the thermoplastic carbon material upper is cooled and the thermal stress is released at the same time.

[0032] Preferably, in the cooling process of the thermoplastic carbon material upper, the temperature of the coolant in the cooling tank drops from 80°C to room temperature, the temperature drop is 1°C-5°C each time, and the interval time of each temperature drop is 3-7 minutes.

[0033] Preferably, in step 6, the finishing and shaping of the thermoplastic carbon material upper includes resin recovery processing and sheet curling processing; wherein the resin recovery processing is specifically:

[0034] The thermoplastic carbon material upper cooled in step 5 is sent to a trimming die of a trimming device, and the excess resin overflowing around the thermoplastic carbon material upper is cut off by die cutting, and the cut resin is collected centrally;

[0035] The collected excess resin is heated and melted into a fluid state, and the fluid resin is filtered to remove impurities therein and then put back into the container containing the molten resin in step 4 for reuse.

[0036] Preferably, the sheet material is rolled into a tube by:

[0037] The thermoplastic carbon shoe upper after cutting and shaping is further cooled by air cooling until it is completely cooled and solidified;

[0038] The sheet is rolled around the outer wall of the paper tube using a paper tube and a curling device to complete the curling process of the thermoplastic carbon material upper into a tube;

[0039] Among them, the diameter of the paper tube is 20-50cm, and the curling speed of the thermoplastic carbon material upper is 10-30m / min.

[0040] On the other hand, the present invention also provides a carbon composite material high-performance shoe material, which is prepared according to the above-mentioned method for preparing a carbon composite material high-performance shoe material.

[0041] Technical effects and advantages of the present invention:

[0042] The method for preparing the carbon composite high-performance shoe material provided by the present invention can make the prepared shoe material have excellent interface performance, high toughness, and a large bending angle, and can easily fit the human body structure, avoid blistering and degumming problems while meeting the requirements for foot wrapping, and effectively release the thermal stress in the shoe material manufacturing process through oscillation cooling to prevent the shoe material from deformation or cracking, thereby making the prepared shoe material higher in quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 The figure is a schematic diagram of the process of preparing the carbon composite material high-performance shoe material of the present invention. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in 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, not all of the embodiments. 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.

[0045] Embodiment 1, the present invention provides as Figure 1 A method for preparing a carbon composite material high-performance shoe material is shown, comprising the following steps:

[0046] Step 1, raw material processing: using carbon fiber filaments as raw materials for preparing shoe material blanks, and pre-treating the carbon fiber filaments by chemical degreasing, surface modification and infrared drying; the pre-treatment of the carbon fiber filament raw materials in step 1 is specifically as follows:

[0047] Degreasing: Pour a 5% sodium hydroxide solution into a heating container, then immerse the carbon fiber filaments in the sodium hydroxide solution, and heat the sodium hydroxide solution to 60°C and soak for 30 minutes. During the soaking process, mechanical stirring or centrifugal stirring is used to make the carbon fiber filaments fully contact with the sodium hydroxide to remove the grease on the surface of the carbon fiber filaments; after degreasing, the surface of the carbon fiber filaments is rinsed with flowing water to remove the residual sodium hydroxide on the surface of the carbon fiber filaments to avoid the presence of excess sodium hydroxide affecting the quality of the carbon fiber filaments; dust, lubricants, anti-sticking agents and other impurities that may exist on the surface of the carbon fiber filaments (these impurities may come from the production process of the carbon fiber filaments) are removed by degreasing treatment to avoid the formation of carbides due to high temperature during the subsequent heat treatment of the carbon fiber filaments, which affects the surface properties of the carbon fiber and reduces the bonding force of the surface of the carbon fiber filaments, thereby causing the carbon fiber filaments to be weakly bonded to the thermoplastic resin material and easy to debond;

[0048] Surface modification: prepare a nitric acid solution with a concentration of 50%, and keep it at 70°C to soak the degreased carbon fiber filaments in a sodium nitrate solution for 40 minutes, wherein the nitric acid solution can also be replaced with an oxidant such as hydrogen peroxide or potassium permanganate; in addition, after the surface modification treatment, the surface of the carbon fiber filaments is rinsed with flowing water to remove the oxidants such as nitric acid remaining on the surface of the carbon fiber filaments, and the excess nitric acid solution on the surface of the carbon fiber filaments is removed to avoid affecting the subsequent processing of the carbon fiber filaments; the carbon fiber filaments are chemically oxidized using a nitric acid solution as an oxidant to modify the surface, so that an oxide layer is generated on the surface of the carbon fiber filaments, increasing its surface roughness and sparks, thereby improving the subsequent bonding between the carbon fiber filaments and the thermoplastic resin matrix material, thereby improving the quality of the composite treatment of the shoe material blanks;

[0049] Drying: The degreased carbon fiber filaments are sent to the infrared drying equipment, and the thermal effect of infrared rays is used to dry the carbon fiber filaments at a temperature of 120°C for 15 minutes to completely remove the moisture on the carbon fiber filaments; the moisture on the surface and inside of the single filaments in the carbon fiber filaments is removed by infrared drying, so that the carbon fiber filaments are dried more thoroughly, so that the shoe material blanks prepared by the carbon fiber filaments can avoid the presence of moisture in the subsequent composite treatment process, which causes the reaction of moisture with the thermoplastic resin matrix material to cause blistering or cracking, thereby helping to enhance the bonding force between the carbon fiber filaments and the thermoplastic resin matrix material, and improve the quality of the shoe material;

[0050] Step 2, weaving of shoe material blanks: the carbon fiber filament raw material pretreated in step 1 is made into shoe material blanks through a weaving molding process, and the weaving molding process adopted can be one of weaving, knitting, and braiding, wherein the braiding can be two-dimensional braiding or three-dimensional braiding; wherein, the specific steps of using a three-dimensional braiding machine to make shoe material blanks are: according to the use requirements of the shoe material, the two-dimensional or three-dimensional structure of the shoe material is drawn out using drawing software to determine the structure of the shoe material; according to the determined shoe material structure, an organizational structure diagram is made, and the braiding machine parameters are determined, wherein the braiding parameters include but are not limited to the braiding density, the number of layers, and the braiding angle; the carbon fiber filaments are laid on the three-dimensional braiding machine according to the set path and angle, and the three-dimensional braiding machine is made to braid according to the set braiding parameters to obtain a two-dimensional or three-dimensional shoe material blank, the thickness of the two-dimensional shoe material blank is generally between 0.2-0.5mm, and the three-dimensional shoe material blank can save the later lamination step compared with the two-dimensional shoe material blank, and at the same time, twenty layers of three-dimensional fabric can be achieved, so that the shoe material blank has higher quality;

[0051] Step three, surface treatment of the shoe material blank: send the shoe material blank prepared in step two into the low-temperature plasma equipment, so that at least two nozzles in the low-temperature plasma jet equipment are used to perform ion spraying on the surface of the shoe material blank at an angle perpendicular to the binding yarn; since the thickness and tight pores of the shoe material blank prepared from carbon fiber filaments vary greatly depending on the organizational structure, in order to uniformly treat the various parts of the shoe material blank with ion spraying, the traditional jet core equipment is improved so that the jet nozzle can adjust the ion spraying angle according to the structure; specifically, the traditional spray The ion angle is changed from perpendicular to the tissue point to perpendicular to the binding yarn, and the nozzle is changed from one to two. After the improved device, under the same parameter plasma treatment, the number of ions retained on the surface of the shoe blank is significantly increased, and at the same time, the damage to the surface fiber caused by excessive jet caused by vertical injection of the preform tissue point is reduced, so that the contact area between the shoe blank and the thermoplastic resin matrix material is increased, and the bonding effect is improved, so that the shoe blank can be fully combined with the thermoplastic resin matrix material during the composite treatment process to form an interlocking state, so as to achieve the purpose of firm bonding, thereby reducing the probability of degumming problems;

[0052] Step 4, preparation of shoe materials: placing the shoe material blank processed in step 3 in a container, filling it with TPU resin slurry, and then placing it in a hot press, during which the container is kept airtight and heated and pressurized, so that the TPU resin slurry is fully filled into the internal gap of the shoe material blank to form a thermoplastic carbon material upper in a resin-rich state; specifically, the TPU resin material is sent into a heating container and heated to 220°C, so that the TPU resin material is heated into a molten fluid state; then the shoe material blank is immersed in the molten TPU resin, the heating container is kept airtight, and the heating container is heated at 2 MPa pressure for 20 minutes, so that the fluid TPU resin is completely filled into the voids of the shoe blank, forming a thermoplastic carbon material upper in a resin-rich state. The shoe blank made of carbon fiber filaments is filled with a fluid TPU resin material, so that the TPU resin material can be fully immersed in the pores of the shoe blank. This can not only increase the contact area between the shoe blank and the TPU resin material, but also enhance the bonding force between the two, making the bonding between the two more firm and avoiding degumming, and at the same time avoiding bubbling caused by the presence of voids, so that the thermoplastic carbon material upper produced is of higher quality;

[0053] After the hot pressing treatment, the upper and lower surfaces are made flat, and then TPU films are pasted on the upper and lower surfaces and sent to a hot press for heating and pressurization treatment to obtain a thermoplastic carbon material upper. Specifically, after the thermoplastic carbon material upper is naturally cooled to 100°C-180°C in a container, TPU films are directly pasted on both sides of the thermoplastic carbon material upper, and the thermoplastic carbon material upper is sent to a hot press for hot pressing treatment. After the thermoplastic carbon material upper with TPU film is heated to 130°C-220°C in a hot press, 10-50 MPa of pressure, so that the thermoplastic carbon material upper with TPU film is kept in a heated and pressurized environment for 20-40 minutes to obtain a thermoplastic carbon material upper. After the thermoplastic carbon material upper is impregnated and cooled, the fluid resin will sink due to gravity, which easily leads to an uneven surface of the shoe material. By pasting the resin film at a low temperature of the shoe material and cooperating with the thermoplastic carbon material upper filled with fluid resin, the surface of the thermoplastic carbon material upper that can be prepared is smoother and neater, thereby improving the overall aesthetics;

[0054] Step 5, cooling treatment: the thermoplastic carbon material upper obtained in step 4 is cooled by a step-by-step cooling process; specifically, the cooling treatment of the thermoplastic carbon material upper processed in step 4 is as follows: the thermoplastic carbon material upper is passed through the positioning area under the floating frame, and the floating frame is floated above the liquid surface of the cooling tank, so that the thermoplastic carbon material upper is completely immersed in the top position of the coolant, and the cooling position of the thermoplastic carbon material upper is positioned and guided; a temperature control assembly is arranged in the cooling tank to regulate the temperature of the coolant in the cooling tank, so that the liquid in the cooling tank can be cooled step by step, and the thermoplastic carbon material upper can be cooled step by step in the cooling tank; an ultrasonic transmitter is arranged at the bottom of the cooling tank, and the ultrasonic transmitter performs ultrasonic vibration on the water in the cooling tank, so that the thermoplastic carbon material upper releases thermal stress while cooling, and the setting of the floating frame is utilized, and the sheet-like thermoplastic carbon material upper is confined to the floating frame. The position below the frame can make the thermoplastic carbon material upper completely immersed in the top position inside the coolant, so that the two sides of the thermoplastic carbon material upper are heated more evenly, and the temperature difference can be reduced step by step from high to low to avoid cracks on the surface of the thermoplastic carbon material upper caused by excessive temperature difference. At the same time, the stability of the thermoplastic carbon material upper can be enhanced, so that the reset shoe material can fully release the internal stress during the cooling process, and the composite treatment process of the thermoplastic carbon material upper can be further consolidated to enhance its curing effect, so that the resin matrix material and the carbon fiber shoe material blank are more firmly bonded and have stronger bonding force, thereby further avoiding degumming and blistering problems and making the prepared thermoplastic carbon material upper of higher quality; wherein, in the cooling treatment of the thermoplastic carbon material upper, the temperature drop range of the coolant in the cooling tank is from 80°C to room temperature, the degradation amplitude is 5°C each time, and the interval time of each temperature degradation is 5min;

[0055] Step 6, trimming and shaping: cutting the periphery of the thermoplastic carbon material upper cooled in step 5, cutting and reusing the resin material overflowing from the periphery of the thermoplastic carbon material upper, and then curling the trimmed thermoplastic carbon material upper into a tube by a curling process; sending the thermoplastic carbon material upper cooled in step 5 into the trimming mold of the trimming equipment, trimming the excess resin overflowing from the periphery of the thermoplastic carbon material upper by die-cutting, and collecting the trimmed resin in a centralized manner; heating and melting the collected excess resin into a fluid state, filtering the fluid resin, eliminating the impurities therein, and then re-putting it into the container containing the molten resin in step 4 for reuse, and Recycling can improve the utilization rate of materials, reduce manufacturing costs, and achieve the purpose of environmental protection; the thermoplastic carbon material upper after cutting and shaping is further cooled by air cooling. Since the shoe material does not curl after water cooling, air cooling is used instead of natural cooling, while improving the cooling efficiency until it is completely cooled and solidified; a paper tube is used in conjunction with a curling device to roll the sheet material onto the outer wall of the paper tube to complete the curling of the thermoplastic carbon material upper into a tube; wherein the diameter of the paper tube is 30 cm, and the curling speed of the thermoplastic carbon material upper is 15 m / min. A good curling method can enable the prepared thermoplastic carbon material upper to be stably stored, reduce the defective rate, and improve the preparation quality.

[0056] It should be noted that in step three, the low-temperature plasma jet equipment uses an oxygen mixture composed of oxygen and argon, wherein the oxygen content is 6% and the argon content is 94%. The low-temperature plasma jet equipment performs vertical transportation at a power of 1000W, a processing speed of 35mm / s, and a continuous processing time of 7min. Under this condition, ion spraying can maximize the bonding effect between the shoe material blank and the resin matrix material and improve the bonding strength between the two.

[0057] Among them, the TPU resin slurry is composed of the following raw materials in percentage by mass, specifically including: 60% TPU resin, 15% carbon fiber, 8% plasticizer, 2% coupling agent, 0.3% antioxidant, 1% lubricant, 13% compatibilizer and 0.7% pigment. The TPU resin, plasticizer, coupling agent, antioxidant, lubricant, compatibilizer and pigment are pre-mixed in a ratio of 60:8:2:0.3:1:13:0.7 to ensure that the components are evenly mixed. In a molten state, 15% of the carbon fiber is blended with the pre-mixed raw materials, and the TPU resin slurry is evenly mixed to obtain the TPU resin slurry. Among them, the plasticizer is dioctyl phthalate, the coupling agent is a silane coupling agent, and the lubricant is polyethylene wax. The compatibilizer is used in the TPU resin slurry to improve the compatibility of TPU resin and carbon fiber and promote close bonding between the two. Adding carbon fiber is beneficial to increasing the mechanical properties and filling effect of TPU resin. The plasticizer is used to improve the fluidity and flexibility of the slurry, and the coupling agent is used to improve the bonding force between TPU resin and carbon fiber filaments. The use of antioxidants can prevent the oxidative decomposition of TPU resin during processing. The setting of pigments can make the TPU resin slurry more in line with the color of shoe blanks prepared from carbon fiber filaments, or select corresponding colors according to preparation requirements. The TPU resin slurry prepared by the above components can effectively improve the filling effect between the shoe blanks prepared from carbon fiber filaments, so that the TPU resin slurry fills the gaps in the shoe blanks more fully, thereby improving the quality of the subsequently prepared thermoplastic carbon material uppers.

[0058] Example 2: Based on Example 1, this example achieves the preparation of high-performance shoe materials made of carbon composite materials by changing the following parameters, wherein the adjusted parameters specifically include:

[0059] In the degreasing treatment of carbon fiber filaments, the sodium hydroxide concentration is 8%, the heating temperature is 70°C, and the soaking time is 40 minutes;

[0060] In the surface modification treatment of carbon fiber filaments, the concentration of nitric acid solution was 60%, the immersion temperature was 70°C, and the immersion time was 55 min;

[0061] In the infrared drying treatment of carbon fiber filaments, the drying temperature is 140°C and the drying time is 30 min;

[0062] In the ion jet treatment of the shoe blank, the oxygen content is 10%, the argon content is 90%, the ion transport power is 1500W, the treatment speed is 50mm / s, and the continuous treatment time is 10min;

[0063] In the preparation of the shoe material, the heating temperature of the TPU resin is 300°C, the pressure in the heating container is 5MPa, and the shoe material blank is immersed in the heating container for 40 minutes;

[0064] The temperature of the thermoplastic carbon material upper in the resin-rich state pasting the TPU film is 180°C, and the temperature of the thermoplastic carbon material upper pasting the TPU film in the hot press is 220°C, the pressure of the hot press is 510MPa, and the duration is 40min;

[0065] During the cooling treatment of the thermoplastic carbon material upper, the temperature reduction amplitude of each level of the thermoplastic carbon material upper is 5°C, and the temperature reduction time of each level is 7 minutes.

[0066] Example 3: Based on Example 1, this example achieves the preparation of high-performance shoe materials made of carbon composite materials by changing the following parameters, wherein the adjusted parameters specifically include:

[0067] In the degreasing treatment of carbon fiber filaments, the sodium hydroxide concentration is 2%, the heating temperature is 50°C, and the soaking time is 20 minutes;

[0068] In the surface modification treatment of carbon fiber filaments, the concentration of nitric acid solution is 40%, the immersion temperature is 50°C, and the immersion time is 35 minutes;

[0069] In the infrared drying treatment of carbon fiber filaments, the drying temperature is 100°C and the drying time is 10 min;

[0070] In the ion jet treatment of the shoe blank, the oxygen content is 1%, the argon content is 99%, the ion transport power is 500W, the treatment speed is 10mm / s, and the continuous treatment time is 1min;

[0071] In the preparation of the shoe material, the heating temperature of the TPU resin is 150°C, the pressure in the heating container is 0.1MPa, and the shoe material blank is immersed in the heating container for 20 minutes;

[0072] The temperature of the thermoplastic carbon material upper in the resin-rich state pasting the TPU film is 100°C, and the temperature of the thermoplastic carbon material upper pasting the TPU film in the hot press is 130°C, the pressure of the hot press is 10MPa, and the duration is 20min;

[0073] During the cooling treatment of the thermoplastic carbon material upper, the temperature reduction amplitude of each level of the thermoplastic carbon material upper is 1°C, and the temperature reduction time of each level is 3 minutes.

[0074] Example 4: Based on Example 1, this example achieves the preparation of high-performance shoe materials made of carbon composite materials by changing the following parameters, wherein the adjusted parameters specifically include:

[0075] In the degreasing treatment of carbon fiber filaments, the sodium hydroxide concentration was 6.5%, the heating temperature was 58°C, and the soaking time was 29 minutes;

[0076] In the surface modification treatment of carbon fiber filaments, the concentration of nitric acid solution was 48.8%, the immersion temperature was 63.5℃, and the immersion time was 33min;

[0077] In the infrared drying treatment of carbon fiber filaments, the drying temperature was 133°C and the drying time was 22 min;

[0078] In the ion jet treatment of the shoe blank, the oxygen content was 3.6%, the argon content was 96.4%, the ion transport power was 1350W, the treatment speed was 38mm / s, and the continuous treatment time was 8min;

[0079] In the preparation of the shoe material, the heating temperature of the TPU resin is 288°C, the pressure in the heating container is 4.1MPa, and the shoe material blank is immersed in the heating container for 34 minutes;

[0080] The temperature of the thermoplastic carbon material upper in the resin-rich state pasting the TPU film is 156°C, and the temperature of the thermoplastic carbon material upper pasting the TPU film in the hot press is 178°C, the pressure of the hot press is 37MPa, and the duration is 33min;

[0081] During the cooling treatment of the thermoplastic carbon material upper, the temperature reduction amplitude of each level of the thermoplastic carbon material upper is 4°C, and the temperature reduction time of each level is 6.5 minutes.

[0082] In Comparative Example 1, a carbon composite material high-performance shoe material is prepared by the same method as in Example 1, except that the TPU resin substrate (thermoplastic resin substrate) in the preparation step of the shoe material in Example 1 is replaced with a thermosetting resin substrate.

[0083] In comparative example 2, a thermosetting resin is used as a base material combined with a shoe material blank made of carbon fiber filaments, and a shoe material is prepared by a traditional shoe material preparation method.

[0084] The description of the surface density, bending strength, bendable angle and interface condition of the shoe materials prepared by the methods provided in Example 1, Example 2, Example 3, Example 4, Comparative Example 1 and Comparative Example 2 is shown in the following table:

[0085]

[0086] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for preparing a carbon composite material high-performance shoe material, characterized in that: The following steps are involved: Step 1, raw material processing: using carbon fiber filaments as raw materials for preparing shoe material blanks, and pre-treating the carbon fiber filaments by chemical degreasing, surface modification and infrared drying; Step 2, weaving of the shoe material blank: the carbon fiber filament raw material pretreated in step 1 is made into a shoe material blank through a weaving molding process; Step 3, surface treatment of the shoe material blank: sending the shoe material blank prepared in step 2 into a low-temperature plasma device, so that at least two nozzles in the low-temperature plasma jet device perform ion spraying on the surface of the shoe material blank at an angle perpendicular to the binding yarn; Step 4, preparation of shoe materials: placing the shoe material blank processed in step 3 in a container, filling it with TPU resin slurry, and then placing it in a hot press, during which the container is kept airtight and heated and pressurized, so that the TPU resin slurry is fully filled into the internal gap of the shoe material blank to form a thermoplastic carbon material upper in a resin-rich state, and after hot pressing, the upper and lower surfaces are flattened, and then TPU films are attached to the upper and lower surfaces, and then the container is sent into a hot press for heating and pressurization to obtain a thermoplastic carbon material upper; Step 5, cooling treatment: the thermoplastic carbon material upper obtained in step 4 is cooled by a step-by-step cooling process; Step 6, trimming and shaping: trimming the periphery of the thermoplastic carbon material upper after cooling in step 5, cutting off the resin material overflowing around the thermoplastic carbon material upper for reuse, and then curling the trimmed thermoplastic carbon material upper into a tube using a curling process.

2. The method for preparing a carbon composite material high-performance shoe material according to claim 1, characterized in that: In step 1, the pretreatment of the carbon fiber filament raw material is specifically as follows: Degreasing: Pour a sodium hydroxide solution with a content of 2%-8% into a heating container, then immerse the carbon fiber filaments in the sodium hydroxide solution, and heat the sodium hydroxide solution to 50℃-70℃ and soak for 20-40min. During the soaking process, mechanical stirring or centrifugal stirring is used to make the carbon fiber filaments fully contact with the sodium hydroxide to remove the grease on the surface of the carbon fiber filaments; Surface modification: prepare a nitric acid solution with a concentration of 40%-60%, and soak the degreased carbon fiber filaments in the sodium nitrate solution at a temperature of 50℃-70℃ for 35-55min; Drying: The degreased carbon fiber filaments are sent to the infrared drying equipment, and the thermal effect of infrared rays is used to dry the carbon fiber filaments at a temperature of 100℃-140℃ for 10-30 minutes to completely remove the moisture on the surface of the single fiber in the carbon fiber filaments; Among them, after the degreasing and surface modification of the carbon fiber filaments are completed, the surface of the carbon fiber filaments needs to be rinsed with flowing water to remove the sodium hydroxide and nitric acid remaining on the surface of the carbon fiber filaments.

3. The method for preparing a carbon composite material high-performance shoe material according to claim 2, characterized in that: In the step 2, the specific steps of using a three-dimensional knitting machine to prepare a shoe material blank are: According to the use requirements of the shoe material, use drawing software to draw the two-dimensional or three-dimensional structure of the shoe material to determine the structure of the shoe material; According to the determined shoe material structure, an organizational chart is prepared to determine the knitting machine parameters, wherein the knitting parameters include but are not limited to the knitting density, the number of layers and the knitting angle; The carbon fiber filaments are laid on a three-dimensional braiding machine according to a set path and angle, and the three-dimensional braiding machine is made to weave according to the set weaving parameters to obtain a two-dimensional or three-dimensional shoe material blank.

4. The method for preparing a carbon composite material high-performance shoe material according to claim 3, characterized in that: In step three, the low-temperature plasma jet equipment uses an oxygen mixture consisting of oxygen and argon, wherein the oxygen content is 1%-10%, and the argon content is 90%-99%. The low-temperature plasma jet equipment performs vertical transportation at a power of 500-1500W, a processing speed of 10-50mm / s, and a continuous processing time of 1-10min.

5. The method for preparing a carbon composite material high-performance shoe material according to claim 4, characterized in that: In the step 4, the preparation of the shoe material is specifically as follows: The TPU resin material is sent into a heating container and heated to 150°C-300°C to heat the TPU resin material into a molten fluid state; Then, the shoe material blank is immersed in the molten TPU resin, the heating container is kept sealed, and the heating container is kept at a pressure of 0.1-5MPa for 20-40 minutes, so that the fluid TPU resin is completely filled into the gaps of the shoe material blank to form a thermoplastic carbon material upper in a resin-rich state; After the thermoplastic carbon material upper is naturally cooled to 100°C-180°C in the container, TPU film is directly attached to both sides of the thermoplastic carbon material upper and sent to a hot press for hot pressing treatment; The thermoplastic carbon material upper with TPU film is heated to 130°C-220°C in a hot press, and a pressure of 10-50MPa is applied to keep the thermoplastic carbon material upper with TPU film in a heated and pressurized environment for 20-40 minutes to obtain a thermoplastic carbon material upper.

6. The method for preparing a carbon composite material high-performance shoe material according to claim 5, characterized in that: In step 5, the cooling treatment of the thermoplastic carbon material upper processed in step 4 is specifically as follows: The thermoplastic carbon shoe upper passes through the positioning area under the floating frame, and the floating frame is floated above the liquid surface of the cooling tank, so that the thermoplastic carbon shoe upper is completely immersed in the top position of the coolant, and the cooling position of the thermoplastic carbon shoe upper is positioned and guided; A temperature control assembly is arranged in the cooling tank to regulate the temperature of the coolant in the cooling tank, so that the liquid in the cooling tank can be cooled step by step, and the thermoplastic carbon material upper can be cooled step by step in the cooling tank; An ultrasonic transmitter is arranged at the bottom of the cooling tank, and the ultrasonic transmitter performs ultrasonic vibration on the water in the cooling tank at a preset temperature range, so that the thermoplastic carbon material upper is cooled and the thermal stress is released at the same time.

7. The method for preparing a carbon composite material high-performance shoe material according to claim 6, characterized in that: In the cooling process of the thermoplastic carbon material upper, the temperature of the coolant in the cooling tank drops from 80°C to room temperature, with a degradation range of 1°C-5°C each time, and the interval time of each temperature degradation is 3-7 minutes.

8. The method for preparing a carbon composite material high-performance shoe material according to claim 7, characterized in that: In step 6, the finishing and shaping of the thermoplastic carbon material upper includes resin recovery processing and sheet curling processing; wherein the resin recovery processing is specifically: The thermoplastic carbon material upper cooled in step 5 is sent to a trimming die of a trimming device, and excess resin overflowing around the thermoplastic carbon material upper is trimmed by die cutting, and the trimmed resin is collected centrally; The collected excess resin is heated and melted into a fluid state, and the fluid resin is filtered to remove impurities therein and then put back into the container containing the molten resin in step 4 for reuse.

9. The method for preparing a carbon composite material high-performance shoe material according to claim 8, characterized in that: The specific process of curling the sheet into a tube is as follows: The thermoplastic carbon material upper after cutting and shaping is further cooled by air cooling until it is completely cooled and solidified; The sheet is rolled around the outer wall of the paper tube using a paper tube and a curling device to complete the curling process of the thermoplastic carbon material upper into a tube; Among them, the diameter of the paper tube is 20-50cm, and the curling speed of the thermoplastic carbon material upper is 10-30m / min.

10. A high-performance carbon composite shoe material, characterized in that: The high-performance shoe material made from carbon composite material is prepared according to the method for preparing the carbon composite material according to any one of claims 1 to 9.

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