A bamboo support plate for sports shoe sole, its manufacturing method and application

Abstract

The application provides a bamboo support plate for sports shoe soles, a manufacturing method and application thereof, and the manufacturing method comprises the following steps: S1, hydrothermal treatment of raw bamboo under alkaline conditions to remove hemicellulose therein; oxidation of the hydrothermally treated bamboo with an oxidizing substance to obtain oxidized bamboo; the oxidizing substance comprises 2,2,6,6-tetramethylpiperidine oxide, chlorite and hypochlorite; S2, washing of the oxidized bamboo with water, and then ion crosslinking of the bamboo in a metal ion aqueous solution to obtain ion crosslinked bamboo; S3, lamination of the ion crosslinked bamboo in multiple directions to obtain a molded bamboo plate through hot pressing; and S4, application of resin on the surface of the molded bamboo plate, and curing to obtain the bamboo support plate for sports shoe soles. The prepared bamboo support plate has high bending stiffness, hardness and lower density, is environment-friendly and low in cost, and is beneficial to application in sports shoe soles.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of footwear products, and relates to a bamboo support plate for a sports shoe sole, a manufacturing method thereof and application. BACKGROUND

[0002] In sports shoes, built-in carbon fiber plates (referred to as carbon plates) have increasingly attracted the attention of consumers, and have almost become a standard configuration of marathon running shoes and professional competitive basketball shoes. The carbon plate is a carbon fiber plate formed by impregnating and hardening carbon fibers arranged in the same direction using epoxy resin, and has characteristics of high stiffness, hardness and low density. Using the carbon plate as a support plate for the sole of the sports shoe can increase the longitudinal bending stiffness of the shoe, improve the sports performance and economy, and also improve the stability of the shoe and the protection of the foot. However, the manufacturing process of carbon fibers includes using polyacrylonitrile (PAN), pitch and viscose as raw materials, and the above materials are mainly derived from petroleum-based and are non-renewable materials. As a kind of carbon fiber-resin composite material, the carbon plate has the disadvantages of non-renewable raw materials, non-environmental forming process, complex preparation process and high cost, which limits its wider application and promotion.

[0003] At present, some sports shoe manufacturers try to use environmentally friendly materials such as bioplastics and recycled plastics to replace the carbon plate support, but these materials usually cannot meet the bending stiffness and wear resistance requirements of the carbon plate, resulting in a decrease in support performance and easy damage to the shoe. Therefore, in the context of low-carbon development, it is imperative to develop an environmentally friendly, sustainable, low-cost and performance comparable carbon plate composite support plate for the sole of sports shoes.

[0004] For fiber raw materials, bamboo is a natural biomass material, which is abundant, cheap, renewable and degradable. After ordinary bamboo is chemically treated by cross-linking and the like, and is hot-pressed and densified, it can achieve high toughness, stiffness, hardness and other mechanical properties, and has great potential to replace carbon plates as support plates for the soles of sports shoes. However, as a cellulose material, pure bamboo as a sports shoe component still has problems of easy moisture absorption, insufficient stiffness and hardness, and is difficult to replace some high-quality carbon plates. SUMMARY

[0005] Therefore, the present application provides a bamboo support plate for a sports shoe sole, a manufacturing method thereof and application. The bamboo support plate prepared by the method of the present application has high bending stiffness, hardness and lower density, is environmentally friendly and low in cost, and is beneficial to application in the sole of sports shoes.

[0006] The present application provides a manufacturing method of a bamboo support plate for a sports shoe sole, comprising the following steps:

[0007] S1, hydrothermal treatment of raw material bamboo in alkaline conditions, mainly removing hemicellulose; the bamboo after hydrothermal treatment and oxidation of the oxidizing material, get the oxidized bamboo; the oxidizing material includes 2,2,6,6-tetramethylpiperidine oxide, chlorite and hypochlorite;

[0008] S2, the bamboo after oxidation is washed with water, and then immersed in a metal ion aqueous solution for ion crosslinking to obtain ion crosslinked bamboo;

[0009] S3, the ion crosslinked bamboo is laminated in multiple directions, and hot-pressed at 2-20 MPa at 60-160 DEG C to obtain a molded bamboo board;

[0010] S4, optionally applying resin to the surface of the molded bamboo board, curing to obtain a bamboo support plate for sports shoe sole.

[0011] The method for preparing the bamboo support plate for sports shoe sole provided by the application has the advantages of being green, simple to prepare, low cost and the like; the bamboo support plate for sports shoe sole prepared by the method can avoid the problem of using a large amount of adhesive in traditional support plates, overcome the hygroscopic property of wood and bamboo materials, and achieve bending stiffness, hardness and lower density that exceed fiber composite structural parts, thereby providing a new cross-border material selection for replacing carbon fiber composite structural parts in sports shoes.

[0012] Reference Figure 1 , Figure 1 The figure is a schematic diagram of the overall processing of the bamboo material of the embodiment of the application. The manufacturing method of the embodiment of the application first removes hemicellulose in the raw material bamboo (part of the lignin can be removed by chemical reagents), then performs oxidation treatment, washes with water, and then performs metal ion crosslinking, finally, the bamboo is laminated in multiple layers at a certain angle to form a blank, the bamboo is densified by hot pressing, and the bamboo support plate for sports shoe sole is prepared after the surface is coated with resin (including the process of applying resin by brushing, spraying and dipping).

[0013] The raw bamboo material in step S1 of the embodiment of the present application can be any variety with a moisture content of less than 12%. The alkaline condition is achieved by using alkali metal hydroxide such as potassium hydroxide, the temperature of the hydrothermal treatment is 90-98°C, and the time is 1-36h, further 2-24h. The embodiment of the present application takes a certain amount of air-dried bamboo material, puts it in potassium hydroxide aqueous solution, and preferably hydrothermally treats it at 90°C for 1-36h to remove hemicellulose therein, and then washes the sample with pure water. The length and width of the air-dried bamboo material can be arbitrarily expanded according to the size requirement of the product, and the thickness should be less than 3mm. The concentration of the potassium hydroxide aqueous solution can be adjusted as appropriate; the hemicellulose removal treatment time can be 1-36h, and the specific time can be adjusted as needed. In some embodiments, after the hemicellulose is removed, the color of the raw bamboo veneer becomes darker and the thickness decreases.

[0014] In step S1 of the embodiment of the present application, the oxidation includes: mixing the bamboo material after the hydrothermal treatment with an aqueous solution containing oxidizing substances to react, and washing to obtain the bamboo material after oxidation; the aqueous solution containing oxidizing substances is mixed and prepared from a buffer solution with a pH of 6-7, 2,2,6,6-tetramethylpiperidine oxide, sodium chlorite and sodium hypochlorite.

[0015] The aqueous solution containing oxidizing substances is prepared according to the embodiment of the present application as follows: add phosphate buffer powder (PH=6.8) to a beaker and add pure water to 220mL, dissolve thoroughly, then add 0.032g of 2,2,6,6-tetramethylpiperidine oxide, 2.825g of sodium chlorite powder and 0.6447mL of sodium hypochlorite solution in sequence, and stir to dissolve thoroughly. The above process is not particularly limited in mass ratio, the mass ratio of 2,2,6,6-tetramethylpiperidine oxide to bamboo material can be in the range of 1:1-1000, and the optimal ratio is 1:125-220. In other embodiments, the preparation sequence of the aqueous solution containing oxidizing substances is to first add sodium chlorite to the phosphate buffer solution, then add 2,2,6,6-tetramethylpiperidine oxide powder after dissolution, and then add sodium hypochlorite to the solution after thorough dissolution.

[0016] In step S1, the ratio of the bamboo material after the hydrothermal treatment to the aqueous solution containing oxidizing substances is preferably 4-7g:220mL; that is, in the oxidation process, the ratio of the bamboo material after the hydrothermal treatment to the oxidizing reagent solution is 4-7g of bamboo material to 220mL of oxidation solution. Moreover, the reaction temperature of the oxidation is preferably 50-70°C, and the time is 1-72h; the oxidation reaction treatment can be carried out in an oil bath at 60°C for 1-72h, further 2-36h, and the specific time of the oxidation treatment can be adjusted as needed, and then ethanol and pure water are preferably used to wash away the residual drug solution.

[0017] After the oxidized bamboo (light yellow in color, relatively loose structure) is obtained, the embodiment of the present application can immerse it in a metal ion aqueous solution with a concentration of 1 mmol / L-10 mmol / L for ion crosslinking for 24 hours. In the step S2, the metal ion aqueous solution has a metal ion (mainly sodium, cobalt, iron and other metal ions) concentration of 1-10 mmol / L, preferably 2-8 mmol / L.

[0018] In the ion crosslinking process, 2000 mL of ion solution with a metal ion content of 1 mmol / L-10 mmol / L is prepared for every 5-60 g of the oxidized bamboo, that is, the ratio of the oxidized bamboo to the metal ion aqueous solution is preferably 5-60 g:2 L. The ion crosslinking reaction can be carried out at a temperature of 0-100 ℃, for example, at room temperature in the range of 10-30 ℃. The embodiment of the present application uses chemical treatment means to activate the raw bamboo veneer, so that more free active hydroxyl groups and polar groups are generated on the surface. The non-covalent bond action between the components of the bamboo and the coordination bond between the ions and the carboxyl groups are used to excite the non-covalent bond action of the natural components in the bamboo under a specific process. The ion crosslinked bamboo obtained is then glued under the subsequent hot pressing condition, and after the surface resin is hung, a shoe bamboo support plate with high bending stiffness, high hardness, low density, water resistance, which is comparable or even superior to the ordinary carbon plate for sports shoes, can be obtained.

[0019] The ion crosslinked bamboo of the embodiment of the present application is laminated and assembled in multiple directions, such as being assembled into 0o / 90o / +45o / -45o / -45o / +45o / 90o / 0o and then placed between two molds, and hot-pressed at 2-20 MPa at 60-160 ℃ to obtain a molded bamboo board. The assembly method is not limited to 0o / 90o / +45o / -45o / -45o / +45o / 90o / 0o of 8 assembly layers. The performance of the bamboo support plate under different assembly methods is different, and the assembly method can be selectively changed according to the requirements of the support plate product.

[0020] In the step S3 of some embodiments of the present application, the laminated assembly method includes 0o / 90o / +45o / -45o / -45o / +45o / 90o / 0o of 8 assembly layers, 0o / 90o / +0o / 90o / 0o / +90o / 0o of 7 assembly layers, or 0o / 45o / +90o / -45o / 0o / +45o / 90o of 7 assembly layers. As shown in Figure 2 In addition to the standard isotropic assembly (the meaning of assembly is the same as that of assembly), the embodiment of the present application can be assembled at 45 degrees or assembled at 90 degrees.

[0021] In the step S3, the hot-pressing temperature is 60-160 DEG C, preferably 80-150 DEG C, the hot-pressing pressure is 2-20 MPa, preferably 3-16 MPa; the hot-pressing time can be 5-120 min, and the specific conditions can be adjusted according to the thickness of the bamboo material, the product performance and the energy consumption requirement. After a certain hot-pressing treatment, more hydrogen bond structures can be formed between the remaining components, and the structural defects in the dense bamboo structure are greatly reduced, which helps to achieve higher mechanical tensile strength, bending strength and toughness. Moreover, the lamination process in different directions can achieve isotropy of the material. After the hot-pressing is completed, the bamboo material in the mold is cooled, the pressure is released, and a plate-shaped molded bamboo plate is obtained. The molded bamboo plate is taken out after the temperature is reduced to room temperature and the pressure is released, and the mold structure is not specially limited.

[0022] In the embodiment of the present application, the resin is mixed according to the proportion, and then the molded bamboo plate obtained above is coated with a layer of resin, and the simple operation is as follows: Figure 3 As shown in the figure, the resin is brushed on the surface of the sample, and after curing, a bamboo support plate for sports shoe sole is obtained. In the step S4 of the embodiment of the present application, the resin for coating can be one or more of epoxy resin, phenolic resin and urea-formaldehyde resin, and the specific type is not limited; the performance of the formed sample is further enhanced by adding resin. For example: 10-100 g of resin per square meter of sample is coated on the sample with 50 wt% of amino-phenolic resin. The formed bamboo support plate sample is shown in Figure 4 , which is usually yellow, and can be a full-palm structure and various shaped support plate structures.

[0023] The present application provides a bamboo support plate for sports shoe sole obtained by the manufacturing method as described above, which can be called "full bamboo support plate" or "pure bamboo support plate", etc., and has the functions of shoe support, etc.; the density of the bamboo support plate for sports shoe sole is less than 1.4 g / cm 3 , for example, 1.05-1.38 g / cm 3 . The density is the average density. In addition, the present application also provides the application of the bamboo support plate for sports shoe sole in sports shoes.

[0024] In the embodiment of the present application, the hemicellulose in the bamboo material is removed by chemical reagent process, and then the bamboo material is subjected to oxidation treatment, pure water washing, metal ion crosslinking, lamination, hot-pressing and resin coating to obtain a bamboo support plate for sports shoe sole. The bending stiffness, hardness and density of the bamboo support plate for sports shoe sole prepared by the present application can be adjusted by the chemical treatment and hot-pressing process, the type and process of resin coating, and the bending stiffness and hardness of the pure bamboo support plate obtained by the preferred process are higher than those of the traditional carbon fiber support plate, and the density is lower than that of the carbon fiber support plate.

[0025] The bamboo support plate prepared by the method has the characteristics of high bending stiffness, high hardness, low density, low cost, simple preparation process, green environmental protection and the like.

[0026] The bamboo support plate prepared by the method has the characteristics of high bending stiffness, high hardness, low density, low cost, simple preparation process, green environmental protection and the like. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 A process schematic diagram of the whole treatment of the bamboo material in the embodiment of the present application;

[0028] Figure 2 A schematic diagram of different group embryo modes in some embodiments of the present application;

[0029] Figure 3 A schematic diagram of brushing resin in the embodiment of the present application;

[0030] Figure 4 A sample diagram of the bamboo support plate after forming in some embodiments of the present application. DETAILED DESCRIPTION

[0031] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be described in detail below in combination with specific embodiments, and the description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the present application.

[0032] The present application will be further described in combination with embodiments below, and the embodiments described herein are only for helping to understand the present application, and the implementation manner of the present application is not limited to this. Among them, the raw materials of the embodiment of the present application are commercially available products. The moisture content of the bamboo material is less than 12%, and the thickness is not more than 3mm. The amino phenolic resin: solid content 50wt%; epoxy resin type: JH5539.

[0033] Embodiment 1:

[0034] A preparation method of a super-strong full-bamboo support plate for sports shoe sole, comprising the following steps:

[0035] (1) Take 5g air-dried bamboo and put it in a 2% potassium hydroxide aqueous solution, and then hydrothermally treat it at 90°C for 2h, and then wash the sample thoroughly with pure water.

[0036] (2) Add phosphate buffer powder (PH = 6.8) to a beaker, add pure water to 220mL, dissolve thoroughly, and then sequentially add 0.032g of 2,2,6,6-tetramethylpiperidine oxide, 2.825g of sodium chlorite powder, and 0.6447mL of sodium hypochlorite solution, and stir to dissolve thoroughly.

[0037] Put the above bamboo into the above oxidation solution, and then react in an oil bath at 60°C for 18h, and then wash the residual liquid with ethanol and pure water.

[0038] (3) Soak the above oxidized bamboo in 114.41mL of a metal ion aqueous solution containing 1.94mmol / L of cobalt chloride hexahydrate for 24h.

[0039] (4) Stack the above ion-crosslinked bamboo in the form of 0o / 90o / +45o / -45o / -45o / +45o / 90o / 0o in 8 layers, and then put it between two molds, and then hot-press at 8MPa and 140°C for 20min. After cooling, release the pressure to obtain a full bamboo board.

[0040] (5) Mix amino phenolic resin and water in a mass ratio of 1:1, and then dip the above obtained full bamboo board in a layer of amino phenolic resin solution, and then solidify (solidification conditions: heating at 140°C for 10min) to obtain a support plate for a full bamboo sports shoe sole. The support plate has a thickness of 1.2mm, a full sole, and a mass of 14.1g.

[0041] The test results show that the bending stiffness (test standard: GB / T 9341-2008) of the support plate sample obtained in Example 1 is 10798.1N·mm, the Shore hardness (GB / T 2411-2008) is 78D, and the density (GB / T 533-2008) is 1.06g / cm 3 The test standards of the following examples are the same as those of Example 1.

[0042] Example 2:

[0043] A method for preparing a support plate for a full bamboo sports shoe sole, comprising the following steps:

[0044] (1) Take 5g air-dried bamboo and put it in a 2% potassium hydroxide aqueous solution, and then hydrothermally treat it at 90°C for 2h, and then wash the sample thoroughly with pure water.

[0045] (2) A beaker is added with phosphate buffer powder (PH = 6.8) and pure water to 220 mL, after fully dissolving, 0.032 g of 2,2,6,6-tetramethylpiperidine oxide, 2.825 g of sodium chlorite powder, 0.6447 mL of sodium hypochlorite solution are sequentially added, and fully dissolved by stirring.

[0046] The above bamboo is placed in the above oxidation solution, and after 18 h of reaction at 60℃ in an oil bath, the residual drug solution is washed away with ethanol and pure water.

[0047] (3) The above oxidized bamboo is immersed in 114.41 mL of metal ion aqueous solution containing 1.94 mmol / L of cobalt chloride hexahydrate, and soaked for 24 h.

[0048] (4) The ion-crosslinked bamboo is placed in a mold after being assembled in the manner of 0° / 90° / +45° / -45° / +45° / 90° / 0° in 8 layers, and hot-pressed at 8 MPa and 140℃ for 20 min. After cooling, the pressure is released to obtain a support plate for a full bamboo sports sole.

[0049] (5) The mass ratio of epoxy resin to curing agent is 3:1, and then the obtained full bamboo plate is coated with an epoxy resin solution, and after curing at room temperature for 24 h, a support plate for a super strong full bamboo sports sole is obtained. The thickness of the support plate is 1.36 mm, the full palm, and the mass is 21.19 g.

[0050] After testing, the sample obtained in Example 2 has a bending stiffness of 5559.05 N·mm, a Shore hardness of 80D, and a density of 1.41 g / cm 3 .

[0051] Example 3:

[0052] A method for preparing a support plate for a super strong full bamboo sports sole, comprising the following steps:

[0053] (1) 45 g of air-dried bamboo is weighed and placed in a 2% potassium hydroxide aqueous solution, and after hydrothermal treatment at 90℃ for 2 h, the sample is thoroughly washed with pure water.

[0054] (2) A beaker is added with phosphate buffer powder (PH = 6.8) and pure water to 2000 mL, after fully dissolving, 0.29 g of 2,2,6,6-tetramethylpiperidine oxide, 25.68 g of sodium chlorite powder, 5.86 mL of sodium hypochlorite solution are sequentially added, and fully dissolved by stirring.

[0055] The above bamboo is placed in the above oxidation solution, and after 18 h of reaction at 60℃ in an oil bath, the residual drug solution is washed away with ethanol and pure water.

[0056] (3) The above-oxidized bamboo was immersed in 1029.34 mL of a metal ion aqueous solution containing 1.94 mmol / L of cobalt chloride hexahydrate for 24 h.

[0057] (4) The above ion-crosslinked bamboo was placed between molds in the manner of 0° / 90° / +45° / -45° / -45° / +45° / 90° / 0° after 8 layers of assembly, and was hot-pressed at 8 MPa and 140°C for 20 min. After the hot-pressing was completed, the bamboo was cooled, the pressure was released, and a full bamboo board was obtained.

[0058] (5) Amino phenolic resin: water = 1:1 in mass ratio was prepared, then the above-obtained full bamboo board was coated with a layer of amino phenolic resin solution, and was cured at 140°C for 10 min to obtain a support plate for a super-strong full bamboo sports shoe sole. The support plate had a thickness of 1.5 mm, a full palm, and a mass of 17.57 g.

[0059] The sample obtained in Example 3 was tested to have a bending stiffness of 10413.95 N·mm, a Shore hardness of 78D, and a density of 1.06 g / cm 3 .

[0060] Example 4:

[0061] A method for preparing a bamboo support plate for a sports shoe sole comprises the following steps:

[0062] (1) 5 g of air-dried bamboo was weighed and placed in a 2% potassium hydroxide aqueous solution, and was hydrothermally treated at 90°C for 2 h, and then the sample was washed thoroughly with pure water.

[0063] (2) A beaker was added with phosphate buffer powder (PH = 6.8) and pure water to 220 mL, and after being dissolved thoroughly, 0.032 g of 2,2,6,6-tetramethylpiperidine oxide, 2.825 g of sodium chlorite powder, and 0.6447 mL of sodium hypochlorite solution were sequentially added and dissolved thoroughly.

[0064] The above bamboo was placed in the above oxidation solution, and was reacted in an oil bath at 60°C for 18 h, and then residual reagents were washed away with ethanol and pure water.

[0065] (3) The above bamboo was placed between molds in the manner of -45° / +45° / -45° after 7 layers of assembly, and was hot-pressed at 8 MPa and 140°C for 20 min.

[0066] After the hot-pressing was completed, the bamboo was cooled, the pressure was released, and a bamboo support plate for a sports shoe sole was obtained; the support plate had a thickness of 1.3 mm, a full palm, and a mass of 19.82 g.

[0067] The sample obtained in Example 4 was tested to have a bending stiffness of 5536.37 N·mm, a Shore hardness of 76D, and a density of 1.38 g / cm3 .

[0068] Example 5

[0069] A preparation method of a bamboo support plate for a sports shoe sole, comprising the following steps:

[0070] (1) Take 45g air-dried bamboo and put it in a 2% potassium hydroxide aqueous solution, hydrothermally treat it at 90℃ for 2h, and then wash the sample thoroughly with pure water.

[0071] (2) Add phosphate buffer powder (PH = 6.8) to a beaker, add pure water to 2000mL, dissolve thoroughly, and then add 0.29g of 2,2,6,6-tetramethylpiperidine oxide, 25.68g of sodium chlorite powder, and 5.86mL of sodium hypochlorite solution in sequence, and stir to dissolve thoroughly.

[0072] Put the above-mentioned bamboo into the above-mentioned oxidation solution, react in an oil bath at 60℃ for 18h, and then wash the residual liquid with ethanol and pure water.

[0073] (3) Put the above-mentioned bamboo into the mold after 7 layers of 0° / 90° / 0° assembly, and hot-press at 8MPa and 140℃ for 20min.

[0074] After hot-pressing and cooling the bamboo, the pressure is released, and a bamboo support plate for a sports shoe sole is obtained; the support plate has a thickness of 1.2mm, a full sole, and a mass of 18.30g.

[0075] The test results show that the sample obtained in Example 5 has a bending stiffness of 2835.28N·mm, a Shore hardness of 76D, and a density of 1.38g / cm 3 .

[0076] Comparative Example

[0077] a. Cut the carbon fiber cloth into the required shape and size, and apply a layer of epoxy resin on the surface. After preliminary curing, a carbon fiber prepreg is obtained.

[0078] b. Prepreg layering: The carbon fiber plate prepreg is layered one layer at a time. According to the pattern on the surface of the carbon fiber plate, the bottom layer of prepreg is laid, followed by the initial 0°, 90° layering, and the ±45° layering is interspersed. This is a mixed layering. The layering angle differs in different application scenarios, and the number of layers also differs.

[0079] c. After the layering is completed, cut it into the required shape;

[0080] d. Put the cut composite material into the mold, close the mold, and send it to the hot press for pressure and heat curing. The resin in the carbon fiber prepreg melts and solidifies again. After the temperature drops, the carbon fiber plate is formed.

[0081] The bending stiffness of the T700 carbon filament thermosetting carbon plate with a thickness of about 0.9 mm is 4800-4900 N·mm.

[0082] From the above examples, it can be seen that the bamboo support plate prepared by the method has high bending stiffness, hardness and lower density, is environment-friendly and low in cost, and is beneficial to application in sports shoe soles.

[0083] Finally, it should be noted that the specific embodiments described herein are merely illustrative of the spirit of the present application, and are not intended to limit the embodiments of the present application. Those skilled in the art can make other modifications or supplements to the described embodiments, or use similar ways to replace them, which do not need or cannot be fully described here. However, these obvious changes or variations derived from the essential spirit of the present application still fall within the protection scope of the present application, and any additional limitation is contrary to the spirit of the present application.

Claims

1. A method of manufacturing a bamboo support plate for a sports shoe sole, characterized by, The method comprises the following steps: S1, hydrothermal treatment of raw bamboo under alkaline conditions to remove hemicellulose; oxidation of the hydrothermally treated bamboo with an oxidizing substance to obtain oxidized bamboo; the oxidizing substance comprises 2,2,6,6-tetramethylpiperidine oxide, chlorite and hypochlorite; S2, washing the oxidized bamboo with water, then immersing it in a metal ion aqueous solution for ion crosslinking to obtain ion crosslinked bamboo; the metal ion concentration of the metal ion aqueous solution is 1-10 mmol / L; the ratio of the oxidized bamboo to the metal ion aqueous solution is 5-60 g:2 L; S3, laminating the ion crosslinked bamboo in multiple directions to form a blank, hot pressing at 2-20 MPa and 60-160℃ to obtain a molded bamboo board; S4, applying resin to the surface of the molded bamboo board, curing to obtain a bamboo support plate for sports shoe sole.

2. The method of manufacturing according to claim 1, wherein, In step S1, the moisture content of the raw bamboo is below 12%; the alkaline condition is achieved by using alkali metal hydroxide, the temperature of the hydrothermal treatment is 90-98℃, and the time is 1-36 h.

3. The method of manufacturing according to claim 2, wherein, In step S1, the oxidation comprises: mixing the hydrothermally treated bamboo with an oxidizing substance-containing aqueous solution to react, and washing to obtain oxidized bamboo; the oxidizing substance-containing aqueous solution is prepared by mixing a buffer solution with pH of 6-7, 2,2,6,6-tetramethylpiperidine oxide, chlorite and hypochlorite.

4. The method of manufacturing according to claim 3, wherein, In step S1, the ratio of the hydrothermally treated bamboo to the oxidizing substance-containing aqueous solution is 4-7 g:220 mL; the reaction temperature of the oxidation is 50-70℃, and the time is 1-72 h.

5. The method of making of claim 1, wherein, The manner of stacking the group of blanks in step S3 includes 0 o / 90 o / +45 o / -45 o / -45 o / +45 o / 90 o / 0 o 8 groups of blanks, 0 o / 90 o / +0 o / 90 o / 0 o / +90 o / 0 o 7 groups of blanks, or 0 o / 45 o / +90 o / -45 o / 0 o / +45 o / 90 o 7 groups of blanks.

6. The method of manufacturing according to claim 5, wherein, In step S3, the time of hot pressing is 5-120 min; then cooling to room temperature, unloading pressure to obtain a molded bamboo board.

7. The method of making according to any one of claims 1-6, wherein, In step S4, the resin is one or more of epoxy resin, phenolic resin and urea-formaldehyde resin.

8. The bamboo support plate for sports shoe sole according to the manufacturing method as claimed in any one of claims 1 to 7, characterized by, The density of the bamboo support plate of the sports shoe sole is less than 1.4 g / cm 3 .

9. The bamboo support plate for sports shoe sole according to claim 8 is applied in sports shoes.

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