A support plate for sports shoe sole prepared from wood and bamboo wastes and its preparation method and application

Abstract

The application provides a preparation method of a support plate for sports shoes sole prepared from wood and bamboo wastes. The support plate for sports shoes sole prepared by the application is prepared from wood or bamboo wastes. The wood or bamboo wastes are used to prepare the support plate for sports shoes sole through self-crosslinking between celluloses, addition of coordination bonds or covalent bonds and other ways, and the support plate is prepared through assembly and hot pressing, and has the advantages of green renewable, simple preparation, low cost and the like. The support plate for sports shoes sole prepared by the application avoids the problem of using a large amount of non-renewable materials in traditional support plates, reduces the consumption of petroleum-based resources and the emission of harmful gases in the preparation of carbon fibers, and provides the possibility for the support plate of sports shoes to change from high energy consumption and high pollution to green and low carbon.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of shoes, and particularly relates to a support plate for sports shoe soles prepared from wood and bamboo wastes and a preparation method and application thereof. BACKGROUND

[0002] The sports shoes with built-in carbon fiber composite plates have great market potential in the sports field due to their high stability, anti-twisting property and propulsion. However, as a carbon fiber-resin composite material, the carbon plate has the disadvantages of non-renewable raw materials, non-environmental forming process, high energy consumption, complex preparation process and high cost, which limit its large-area application and promotion. At present, some sports shoe manufacturers attempt to use environmentally friendly alternative materials such as bioplastics and recycled plastics to replace the carbon plate support, but these materials often cannot meet the requirements of the bending stiffness and wear resistance of the carbon plate, resulting in a decrease in the support performance and easy damage of the shoes. In addition, the use of plastics also causes environmental pollution. Under the green and low-carbon development environment, it is imperative to develop an environmentally friendly and sustainable, low-cost sports shoe sole support plate with performance comparable to the carbon plate.

[0003] Wood or bamboo is a kind of widely used natural biomass material, which is abundant in source, cheap and easy to obtain, renewable and degradable. A large amount of wood or bamboo waste is generated in the process of wood or bamboo processing and use. At the same time, researches on wood or bamboo in recent years have confirmed that the mechanical properties such as toughness, stiffness and hardness of wood or bamboo can be more than 10 times that of ordinary wood through processing, which is even more solid than steel. Therefore, wood or bamboo waste has great potential to replace carbon plates as sports shoe sole support plates. Using wood or bamboo waste as the raw material of rigid parts for shoes instead of conventional carbon fiber composite materials can give sports shoes lower carbon emissions and less environmental pollution, which meets the national environmental protection and sustainable strategy.

[0004] Therefore, how to use wood or bamboo waste as the raw material of rigid parts for shoes becomes a problem to be solved. SUMMARY

[0005] Therefore, the technical problem to be solved by the present application is to provide a support plate for sports shoe soles prepared from wood and bamboo wastes and a preparation method and application thereof. The support plate for sports shoe soles provided by the present application can fully replace carbon fiber support plates by using wood or bamboo waste.

[0006] The present application provides a preparation method of a support plate for sports shoe soles prepared from wood and bamboo wastes, which comprises the following steps:

[0007] A) pretreating wood or bamboo waste to obtain pretreated wood or bamboo waste;

[0008] The pretreatment comprises one or more of physical pretreatment, chemical pretreatment or biological pretreatment;

[0009] B) assembling the pretreated wood or bamboo waste to obtain an assembled sample;

[0010] C) hot-pressing the assembled sample to obtain a support plate for sports shoe sole.

[0011] Preferably, step B) comprises:

[0012] B1) cross-linking the pretreated wood or bamboo waste to obtain a modified sample;

[0013] B2) assembling the modified sample to obtain an assembled sample.

[0014] Preferably, the wood or bamboo waste comprises one or more of powder, fiber, shaving and veneer of wood or bamboo waste, the thickness of the veneer being no more than 3 mm.

[0015] Preferably, the physical pretreatment comprises one or more of boiling treatment, steam treatment and drying treatment;

[0016] The chemical pretreatment comprises one or more of acid treatment, alkali treatment and oxidation treatment;

[0017] The biological pretreatment comprises one or more of fungal treatment and enzymatic treatment.

[0018] Preferably, the boiling treatment is performed for 1-6 h;

[0019] The steam treatment is performed for 1-24 h;

[0020] The drying treatment is performed at a temperature of 60-80℃ for 2-24 h;

[0021] The acid used in the acid treatment comprises one or more of sodium chlorite-acetic acid system, sodium hypochlorite system and peracetic acid system;

[0022] The alkali used in the alkali treatment comprises one or more of sodium hydroxide and potassium hydroxide;

[0023] The oxidant used in the oxidation treatment comprises one or more of TEMPO oxidation system and hydrogen peroxide oxidation system;

[0024] The fungus used in the fungal treatment comprises one or more of white rot fungus and ganoderma lucidum;

[0025] The enzyme used in the enzymatic treatment comprises one or both of cellulase and ligninase.

[0026] Preferably, the cross-linking reinforcement treatment comprises one or more of ion coordination treatment, polyphenol complexation treatment, and adhesive treatment.

[0027] Preferably, the group assembly comprises one or more of anisotropic group assembly and random group assembly.

[0028] Preferably, the hot-pressing shaping treatment is performed at a temperature of 60-160 DEG C, a pressure of 1-30 MPa, and for a time of 10-48 h.

[0029] The application also provides a support plate for sports shoe sole prepared by the above preparation method.

[0030] The application also provides a sports shoe comprising the above support plate for sports shoe sole.

[0031] Compared with the prior art, the application provides a preparation method of a support plate for sports shoe sole prepared from wood or bamboo waste, comprising the following steps: A) pretreating wood or bamboo waste to obtain pretreated wood or bamboo waste; the pretreatment comprises one or more of physical pretreatment, chemical pretreatment or biological pretreatment; B) performing group assembly on the pretreated wood or bamboo waste to obtain a group assembly sample; and C) performing hot-pressing shaping treatment on the group assembly sample to obtain a support plate for sports shoe sole. The support plate for sports shoe sole prepared by the application is prepared from wood or bamboo waste. The wood or bamboo waste is used to prepare the support plate for sports shoe sole by self-cross-linking between cellulose, adding coordination bonds or covalent bonds, etc. through supramolecular interaction, and after group assembly and hot-pressing, the support plate for sports shoe sole has many advantages such as green and renewable, simple preparation, low cost, etc. The support plate for sports shoe sole prepared by the application avoids the problem of using a large amount of non-renewable materials in traditional support plates, reduces the consumption of petroleum-based resources and the emission of harmful gases in the preparation of carbon fibers, and provides a possibility for the support plate for sports shoe to change from high energy consumption and high pollution to green and low carbon. In addition, the support plate for sports shoe sole prepared by the application can adjust the parameters such as bending stiffness, hardness and density by replacing raw materials, pretreating raw materials, cross-linking reinforcement treatment and hot-pressing shaping treatment, and the bending stiffness and hardness of the pure bamboo support plate obtained by the optimal 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. BRIEF DESCRIPTION OF DRAWINGS

[0032] Fig. 1 Process flow diagram for preparing a support plate from waste bamboo fibers as raw materials;

[0033] Fig. 2 Photo of the support plate prepared from waste bamboo powder as raw materials;

[0034] Fig. 3 Photo of the support plate prepared from waste bamboo shavings as raw materials. DETAILED DESCRIPTION

[0035] The application provides a preparation method of a support plate for sports shoe sole prepared from wood and bamboo wastes, comprising the following steps:

[0036] A) pretreating wood or bamboo wastes to obtain pretreated wood or bamboo wastes;

[0037] The pretreatment comprises one or more of physical pretreatment, chemical pretreatment or biological pretreatment;

[0038] B) assembling the pretreated wood or bamboo wastes to obtain an assembled sample;

[0039] C) performing hot-pressing shaping treatment on the assembled sample to obtain the support plate for sports shoe sole.

[0040] The support plate for sports shoe sole prepared by the application is prepared from wood and bamboo wastes. The wood and bamboo wastes are used to prepare the support plate for sports shoe sole through self-crosslinking between cellulose, addition of coordination bonds or covalent bonds and other modes by means of supramolecular interaction, and the support plate for sports shoe sole is prepared through assembly and hot-pressing, and has the advantages of green renewable, simple preparation, low cost and the like.

[0041] The application first pretreats wood or bamboo wastes to obtain pretreated wood or bamboo wastes.

[0042] The wood or bamboo wastes are not particularly limited in the application, and the wood or bamboo wastes known to those skilled in the art can be used. Preferably, the wood or bamboo wastes comprise one or more of powder, fiber, shaving and veneer of wood or bamboo wastes, and the thickness of the veneer is not more than 3 mm. The wood wastes are selected from one or more of broad-leaved species or coniferous species. More preferably, the application uses bamboo wastes.

[0043] The pretreatment comprises one or more of physical pretreatment, chemical pretreatment or biological pretreatment. The structure of the pretreated wood or bamboo wastes is loosened, and the number of surface active groups is increased.

[0044] Specifically, the physical pretreatment comprises one or more of boiling treatment, steam treatment and drying treatment.

[0045] The wood or bamboo wastes are soaked in boiling water for boiling, and the boiling time is 1-6 h, which can be 1, 2, 3, 4, 5, 6 or any value between 1 and 6 h.

[0046] The steam treatment is to place the wood or bamboo waste in water vapor for treatment, the time of the steam treatment is 1-24h, which can be 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, or any value between 1-24h.

[0047] The drying treatment is to place the wood or bamboo waste in an air atmosphere for drying treatment, the temperature of the drying treatment is 60-80℃, which can be 60, 65, 70, 75, 80, or any value between 60-80℃; the time is 2-24h, which can be 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, or any value between 2-24h.

[0048] The chemical pretreatment includes one or more of acid treatment, alkali treatment, and oxidation treatment.

[0049] Among them, the acid used in the acid treatment includes one or more of sodium chlorite-acetic acid system, sodium hypochlorite system, and peracetic acid system.

[0050] Among them, the sodium chlorite-acetic acid system is a sodium chlorite aqueous solution with a mass fraction of 0.1%-20%, and the pH is adjusted to 4.6 with acetic acid; the specific treatment method includes: 100g of wood or bamboo waste is pretreated in 100-2000ml of sodium chlorite-acetic acid system at 60-90℃ for 1-48h, the pretreatment temperature is preferably 70-80℃, the pretreatment time is preferably 3-40h, and further preferably 6-24h.

[0051] The sodium hypochlorite system is a sodium hypochlorite aqueous solution with a mass fraction of 6%-14%; the specific treatment method includes: 100g of wood or bamboo waste is pretreated in 100-2000ml of sodium hypochlorite system at 60-90℃ for 1-48h.

[0052] The peracetic acid system includes equimolar strong hydrogen peroxide and glacial acetic acid, and then 1% concentrated sulfuric acid is added to the mixture, and after mixing, it is stored at -5℃ for 48 hours to obtain a peracetic acid solution; the specific treatment method includes: 100g of wood or bamboo waste is pretreated in 50-1000ml of acetic acid system at 30-80℃ for 0.5-6h, the pretreatment temperature is preferably 40-70℃, further preferably 50-60℃, and the pretreatment time is preferably 1-5h, further preferably 2-4h.

[0053] The alkali used in the alkali treatment includes one or more of sodium hydroxide and potassium hydroxide.

[0054] Specifically, the concentration of the alkali treatment liquid is 1wt%-20wt%, which can be 1wt%, 3wt%, 5wt%, 10wt%, 15wt%, 20wt%, or any value between 1wt% and 20wt%, and the specific treatment method includes: 100g of wood or bamboo waste is pretreated in 500-2000ml of alkali treatment liquid at 60-90℃ for 1-24h, the pretreatment temperature is preferably 70-80℃, the pretreatment time is preferably 3-18h, and further preferably 6-12h.

[0055] The oxidizing agent used in the oxidation treatment includes one or more of TEMPO oxidation system, hydrogen peroxide oxidation system.

[0056] The TEMPO oxidation system includes 200ml of phosphate buffer, 0.032g of tempo oxidant, 0.26g of sodium chlorite, and 20ml of 0.1M sodium hypochlorite phosphate buffer; the specific treatment method includes: 100g of wood or bamboo waste is pretreated in 100-3000ml of TEMPO oxidation system at 30-70℃ for 1-96h, the pretreatment temperature is preferably 40-60℃, the pretreatment time is preferably 3-72h, and further preferably 12-48h.

[0057] The hydrogen peroxide oxidation system is mixed by volume ratio of 1:1 of 30% hydrogen peroxide and 10%-15% ammonium hydroxide; the specific treatment method includes: 100g of wood or bamboo waste is pretreated in 100-3000ml of hydrogen peroxide oxidation system at 25-60℃ for 0.5-6h, the pretreatment temperature is preferably 30-50℃, further preferably 35-45℃, and the pretreatment time is preferably 1-5h, further preferably 2-4h.

[0058] The fungus used in the fungus treatment includes one or more of white rot fungus and ganoderma lucidum;

[0059] Specifically, the wood or bamboo waste is mixed with the fungus and placed at room temperature for 10-120 days, which can be 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110, 120, or any value between 10 and 120 days.

[0060] The enzyme used in the enzyme treatment includes one or both of cellulase and ligninase. The specific treatment method includes: the wood or bamboo waste is mixed with the enzyme and subjected to enzyme treatment at 25-60℃ for 6-48h. The enzyme treatment temperature is preferably 30-50℃, further preferably 35-45℃, and the enzyme treatment time is preferably 12-36h, further preferably 18-24h.

[0061] The above reagents are not limited to the above-mentioned types, and include any chemical reagent capable of decomposing wood, and the above methods can be freely combined, for example, the wood and bamboo waste can be subjected to acid treatment and then subjected to oxidation treatment, and the like.

[0062] The pretreated wood or bamboo waste is subjected to assembly to obtain an assembled sample. The method of assembly is not particularly limited in the present application, and any method known to those skilled in the art can be used. Preferably, the method of assembly is changed according to the shape of the waste, and can be ordered assembly or random assembly. The veneer waste can be assembled in different ways such as 0°, 45°, 90°, and the like, and the fibrous waste can be woven.

[0063] In the present application, after the wood or bamboo waste is pretreated, the pretreated wood or bamboo waste is subjected to cross-linking and strengthening treatment before assembly.

[0064] The cross-linking and strengthening treatment includes non-covalent bond regulation and covalent bond regulation. The non-covalent bond regulation includes one or more of ionic coordination treatment and polyphenol complexation treatment.

[0065] The method of coordination treatment includes: immersing the waste in a metal ion solution of 0.01-50 mmol / L for 12-48 h.

[0066] The method of polyphenol complexation treatment includes: sequentially spraying 10-200 mL of a polyphenol aqueous solution with a mass fraction of 0.001%-0.1 and a metal ion solution of 0.01-50 mmol / L on the surface of the waste, and the polyphenol is selected from one or more of tea polyphenol, tannin, and gallic acid.

[0067] The covalent bond regulation includes adhesive treatment. The adhesive treatment method can be one or more of gluing or impregnating. The adhesive is selected from one or more of a natural adhesive and a synthetic adhesive, the synthetic adhesive is selected from one or more of phenolic resin, epoxy resin, polyurethane resin, and nitrile rubber, and the natural adhesive is selected from one or more of protein, starch, and polyphenol. Alternatively, the adhesive is selected from an inorganic adhesive.

[0068] The cross-linking and strengthening treatment can enhance the adhesion strength between the wastes, thereby improving the overall mechanical properties of the product.

[0069] After the cross-linking and strengthening treatment, the modified sample is subjected to assembly to obtain an assembled sample. The method of assembly is as described above and is not repeated here.

[0070] Then, the assembled sample is subjected to hot pressing and shaping treatment to obtain a support plate for sports shoes.

[0071] In the hot-pressing process, the adhesive-free reinforced sample can be directly put into the mold for hot-pressing, the hot-pressing temperature ranges from 60 DEG C to 160 DEG C, which can be 60, 80, 100, 120, 140, 160, or any value between 60 DEG C and 160 DEG C; the hot-pressing pressure ranges from 1 MPa to 30 MPa, which can be 1, 3, 5, 7, 9, 10, 12, 15, 17, 19, 20, 22, 25, 27, 30, or any value between 1 MPa and 30 MPa, and the hot-pressing time ranges from 10 min to 48 h.

[0072] In the hot-pressing process, the adhesive-free reinforced sample can be directly put into the mold for hot-pressing, the hot-pressing temperature ranges from 60 DEG C to 160 DEG C, which can be 60, 80, 100, 120, 140, 160, or any value between 60 DEG C and 160 DEG C; the hot-pressing pressure ranges from 1 MPa to 30 MPa, which can be 1, 3, 5, 7, 9, 10, 12, 15, 17, 19, 20, 22, 25, 27, 30, or any value between 1 MPa and 30 MPa, and the hot-pressing time ranges from 10 min to 48 h.

[0073] In the hot-pressing process, the adhesive-free reinforced sample can be directly put into the mold for hot-pressing, the hot-pressing temperature ranges from 60 DEG C to 160 DEG C, which can be 60, 80, 100, 120, 140, 160, or any value between 60 DEG C and 160 DEG C; the hot-pressing pressure ranges from 1 MPa to 30 MPa, which can be 1, 3, 5, 7, 9, 10, 12, 15, 17, 19, 20, 22, 25, 27, 30, or any value between 1 MPa and 30 MPa, and the hot-pressing time ranges from 10 min to 48 h.

[0074] Referring to Figs. 1-3 , respectively, are photos of the support plates prepared by using waste bamboo fiber, waste bamboo powder and waste bamboo shaving as raw materials. Fig. 1 is a process flow diagram for preparing the support plate by using waste bamboo fiber as raw material, Fig. 1 , from left to right, the first photo is waste bamboo fiber, the second photo is waste bamboo fiber after pretreatment, the third photo is waste bamboo fiber after cross-linking and reinforcing treatment, and the fourth photo is the support plate after hot-pressing and shaping treatment; Fig. 2 is a photo of the support plate prepared by using waste bamboo powder as raw material, Fig. 2 , the left photo is waste bamboo powder, and the right photo is the support plate; Fig. 3 is a photo of the support plate prepared by using waste bamboo shaving as raw material.

[0075] The support plate for sports shoe sole prepared by the application is prepared from wood and bamboo waste. The wood and bamboo waste is used to prepare the support plate for sports shoe sole through self-cross-linking of cellulose, addition of coordination bond or covalent bond, etc., and through assembly and hot-pressing, which has the advantages of green and renewable, simple preparation, low cost and the like.

[0076] The application further provides the support plate for sports shoe soles prepared by the preparation method. 3 .

[0077] The application further provides a sports shoe comprising the support plate for sports shoe soles.

[0078] The support plate for sports shoe soles prepared by the application is prepared from wood or bamboo waste. The wood or bamboo waste is cross-linked by supramolecular interaction between cellulose, and is added with coordination bonds or covalent bonds, and then is formed and hot-pressed to prepare the support plate for sports shoe soles. The support plate for sports shoe soles has the advantages of green and renewable, simple preparation, low cost and the like. The support plate for sports shoe soles prepared by the application avoids the problem of using a large amount of non-renewable materials in traditional support plates, reduces the consumption of petroleum-based resources and the emission of harmful gases in the preparation of carbon fibers, and provides the possibility for the support plate for sports shoes to change from high energy consumption and high pollution to green and low carbon. In addition, the parameters such as the bending stiffness, hardness and density of the support plate for sports shoe soles prepared by the application can be adjusted by processes such as raw material replacement, raw material pretreatment, cross-linking enhancement treatment and hot-pressing shaping treatment. The bending stiffness and hardness of the pure bamboo support plate obtained by the optimal 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.

[0079] In order to further understand the application, the support plate for sports shoe soles prepared from wood and bamboo waste and the preparation method and application thereof provided by the application are described below in combination with examples, and the protection scope of the application is not limited by the following examples.

[0080] Example 1:

[0081] A support plate for sports shoe soles prepared from wood or bamboo waste comprises the following steps:

[0082] (1) 5 g of waste bamboo veneer (the thickness of the veneer is not greater than 3 mm) is weighed and placed in a 2% potassium hydroxide aqueous solution, and after hydrothermal treatment at 90 DEG C for 2 h, the sample is washed thoroughly with pure water.

[0083] (2) A beaker is 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-1-oxyl free radical, 2.825 g of sodium chlorite powder and 0.6447 mL of sodium hypochlorite solution (effective chlorine 10%) are sequentially added and dissolved thoroughly.

[0084] (3) The above-mentioned bamboo material is placed in the above-mentioned solution, and after being reacted at 60 DEG C in an oil bath for 18 h, the residual liquid medicine is washed away with ethanol and pure water.

[0085] (4) The above-oxidized bamboo is immersed in 114.41 mL of a metal ion aqueous solution containing 1.94 mmol / L of cobalt chloride hexahydrate for 24 h.

[0086] (5) The above-mentioned bamboo is placed in a mold in the manner of 0° / 90° / +45° / -45° / -45° / +45° / 90° / 0° after 8 layers are assembled, and hot-pressed at 8 MPa and 140°C for 20 min.

[0087] (6) After the hot-pressing is completed and the bamboo cools, the pressure is released to obtain a support plate for a sports shoe sole.

[0088] The sample obtained in Example 1 is tested to have a bending stiffness of 4931.57 N·mm, a Shore hardness of 77.5, a density of 1.06 g / cm 3 , a thickness of 1.3 mm, and a mass of 15.2 g.

[0089] Example 2:

[0090] A support plate for a sports shoe sole prepared from wood or bamboo waste includes the following steps:

[0091] (1) 5 g of waste bamboo veneer (the thickness of the veneer is not more than 3 mm) is weighed and placed in a 2% potassium hydroxide aqueous solution, and then hydrothermally treated at 90°C for 2 h before the sample is washed thoroughly with pure water.

[0092] (2) A beaker is added with phosphate buffer powder (pH = 6.8) and pure water to 220 mL, and then 0.032 g of 2,2,6,6-tetramethylpiperidine-1-oxyl, 2.825 g of sodium chlorite powder, and 0.6447 mL of sodium hypochlorite solution (effective chlorine 10%) are sequentially added and fully dissolved by stirring.

[0093] (3) The above-mentioned bamboo is placed in the above-mentioned solution, and then reacted in an oil bath at 60°C for 18 h before the residual liquid medicine is washed away with ethanol and pure water.

[0094] (4) The above-oxidized bamboo is immersed in 114.41 mL of a metal ion aqueous solution containing 1.94 mmol / L of cobalt chloride hexahydrate for 24 h.

[0095] (5) The above-mentioned bamboo is coated with water-soluble amino phenolic aldehyde resin between each layer, and then placed in a mold in the manner of 0° / 90° / +45° / -45° / -45° / +45° / 90° / 0° after 8 layers are assembled, and hot-pressed at 8 MPa and 140°C for 25 min.

[0096] (6) After the hot-pressing is completed and the bamboo cools, the pressure is released to obtain a support plate for a sports shoe sole.

[0097] The sample obtained in Example 2 was tested to have a bending stiffness of 7420.66 N·mm, a Shore hardness of 79, a density of 1.63 g / cm 3 , a thickness of 1.5 mm, and a mass of 27.01 g.

[0098] Example 3

[0099] A support plate for a sports shoe sole prepared from wood or bamboo waste includes the following steps:

[0100] (1) 45 g of waste bamboo fibers were weighed and placed in a 2% potassium hydroxide aqueous solution, and then hydrothermally treated at 90°C for 2 h, after which the sample was thoroughly washed with pure water.

[0101] (2) A beaker was added with phosphate buffer powder (pH = 6.8) and pure water to 2000 mL, and after being fully dissolved, 0.29 g of 2,2,6,6-tetramethylpiperidine-1-oxyl free radical, 25.68 g of sodium chlorite powder, and 5.86 mL of sodium hypochlorite solution (available chlorine 10%) were sequentially added and fully dissolved by stirring.

[0102] (3) The above-mentioned bamboo material was placed in the above-mentioned solution, and after being reacted at 60°C in an oil bath for 18 h, the residual liquid was washed away with ethanol and pure water.

[0103] (4) After the above-mentioned bamboo material was treated by being woven vertically two by two, it was placed in a mold in a 0° / 90° / 0° manner after being laminated in four layers, and then hot-pressed at 8 MPa and 140°C for 20 min.

[0104] (5) After the hot-pressing was completed and the bamboo material was cooled, the pressure was released, and a bamboo support plate for a sports shoe sole was obtained.

[0105] The sample obtained in Example 3 was tested to have a bending stiffness of 4931.58 N·mm, a Shore hardness of 80.0, a density of 1.17 g / cm 3 , a thickness of 1.7 mm, and a mass of 18.01 g.

[0106] Example 4

[0107] A support plate for a sports shoe sole prepared from wood or bamboo waste includes the following steps:

[0108] (1) 45 g of waste wood fibers were weighed and placed in a 2% potassium hydroxide aqueous solution, and then hydrothermally treated at 90°C for 2 h, after which the sample was thoroughly washed with pure water.

[0109] (2) The above-mentioned wood material was added to a 2000 mL aqueous solution containing 15 g of cellulase, and then enzymatically hydrolyzed at 60°C for 12 h.

[0110] (3) The above wood is treated by perpendicular weaving two by two, and then put into the mold according to the mode of 0° / 90° / 0° after four-layer group blanking, and hot-pressed at 8 MPa and 140°C for 20 min.

[0111] (4) After the wood is cooled after hot-pressing, the pressure is released, and a bamboo support plate for a sports shoe sole is obtained.

[0112] Test results show that the sample obtained in Example 4 has a bending stiffness of 8950.08 N·mm, a Shore hardness of 78.0, a density of 1.3 g / cm 3 , a thickness of 1.5 mm, and a mass of 26.4 g.

[0113] Example 5

[0114] A support plate for a sports shoe sole prepared from wood or bamboo waste includes the following steps:

[0115] (1) 45 g of waste bamboo veneer is weighed and placed in a 2% potassium hydroxide aqueous solution, and then hydrothermally treated at 90°C for 2 h, and then the sample is washed thoroughly with pure water.

[0116] (2) A beaker is added with phosphate buffer powder (pH = 6.8) and pure water to 2000 mL, and then 0.29 g of 2,2,6,6-tetramethylpiperidine-1-oxyl, 25.68 g of sodium chlorite powder, and 5.86 mL of sodium hypochlorite solution are sequentially added and fully dissolved by stirring.

[0117] (3) The above bamboo is placed in the above solution, and then reacted in an oil bath at 60°C for 18 h, and then the residual liquid medicine is washed away with ethanol and pure water.

[0118] (4) The above bamboo is sprayed with 50 mL of a 0.01% tea polyphenol aqueous solution and a 0.01 mmol / L ferric chloride solution.

[0119] (5) The above bamboo is put into the mold according to the mode of 0° / 90° / +45° / -45° / -45° / +45° / 90° / 0°, and then hot-pressed at 8 MPa and 140°C for 20 min.

[0120] (6) After the bamboo is cooled after hot-pressing, the pressure is released, and a bamboo support plate for a sports shoe sole is obtained.

[0121] Test results show that the sample obtained in Example 5 has a bending stiffness of 10950.00 N·mm, a Shore hardness of 78.0, a density of 1.2 g / cm 3 , a thickness of 1.5 mm, and a mass of 24.4 g.

[0122] Example 6

[0123] A support plate for sports shoe sole prepared from wood or bamboo waste, comprising the following steps:

[0124] (1) 45 g of waste bamboo veneer is weighed and placed in boiling water for boiling for 6 h.

[0125] (2) The above-mentioned bamboo is sprayed with 50 mL of a tea polyphenol aqueous solution with a mass fraction of 0.01% and 0.01 mmol / L of ferric chloride solution.

[0126] (3) The above-mentioned bamboo is placed between the molds in the mode of 0° / 90° / +45° / -45° / -45° / +45° / 90° / 0°, and hot-pressed at 8 MPa and 140°C for 20 min.

[0127] (4) After the hot-pressing is completed and the bamboo cools down, the pressure is released to obtain a bamboo support plate for sports shoe sole.

[0128] The sample obtained in Example 6 has a bending stiffness of 6950.00 N·mm, a Shore hardness of 77.0, a density of 1.2 g / cm 3 , a thickness of 2.0 mm, and a mass of 18.3 g.

[0129] Comparative Example 1

[0130] A support plate for sports shoe sole prepared from carbon fiber composite material, comprising the following steps:

[0131] First, a carbon fiber tape is immersed in a thermosetting epoxy resin to form a pre-impregnated material, then the pre-impregnated material is laid up, and after 8 layers of assembly in the mode of 0° / 90° / +45° / -45° / -45° / +45° / 90° / 0°, it is cut into the required shape, placed in a mold, and high-temperature hot-pressed at 4 MPa and 150°C for 25 min. After the hot-pressing is completed and the material cools down, the pressure is released to obtain a support plate for sports shoe sole.

[0132] The sample obtained in Comparative Example 1 has a bending stiffness of 4811.89 N·mm, a Shore hardness of 75.0D, a density of 1.5 g / cm 3 , and no abnormality in aging resistance.

[0133] Comparative Example 2

[0134] A support plate for sports shoe sole prepared from original bamboo veneer composite material, comprising the following steps:

[0135] 0.5mm of waste bamboo material veneer is not treated and directly brushed with amino phenolic resin. Then, according to the mode of 0° / 90° / +45° / -45° / -45° / +45° / 90° / 0°, 8 layers are assembled, then cut into the required shape, put into the mold for high temperature hot pressing, 8MPa, 140℃ hot pressing for 20min. After hot pressing and cooling, the pressure is released, and the support plate for sports shoe sole is obtained.

[0136] The sample obtained in Comparative Example 2 has a bending stiffness of 3920.63N·mm, a Shore hardness of 70.0D, and a density of 1.1g / cm 3 .

[0137] Comparative Example 3:

[0138] A support plate for sports shoe sole prepared from wood or bamboo waste includes the following steps:

[0139] (1) 20g of waste bamboo fiber is weighed.

[0140] (2) The bamboo fiber is directly mixed with water-soluble amino phenolic resin.

[0141] (3) The mixed sample is put into the mold, hot pressed at 2MPa, 140℃ for 30min.

[0142] (4) After hot pressing, the pressure is released, and the support plate for sports shoe sole is obtained.

[0143] The sample obtained in Example 3 has a bending stiffness of 30884.05N·mm, a Shore hardness of 80.5, a density of 1.98g / cm 3 , a thickness of 1.2mm, and a mass of 21.5g.

[0144] The above only describes the preferred embodiments of the present application, and it should be noted that for ordinary skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, and these improvements and refinements should be considered as the protection scope of the present application.

Claims

1. A method for manufacturing a support plate for a sole of an athletic shoe using wood and bamboo waste, the method comprising the steps of: The method comprises the following steps: ​ A) pretreating wood or bamboo waste to obtain pretreated wood or bamboo waste; The pretreatment comprises one or more of physical pretreatment, chemical pretreatment, or biological pretreatment; The physical pretreatment comprises one or more of boiling treatment, steam treatment, or drying treatment; the boiling treatment has a time of 1-6 h; the steam treatment has a time of 1-24 h; the drying treatment has a temperature of 60-80 ℃ and a time of 2-24 h; The chemical pretreatment comprises one or more of acid treatment, alkali treatment, or oxidation treatment; the acid used in the acid treatment comprises one or more of sodium chlorite-acetic acid system, sodium hypochlorite system, or peracetic acid system; the alkali used in the alkali treatment comprises one or more of sodium hydroxide or potassium hydroxide; the oxidant used in the oxidation treatment comprises one or more of TEMPO oxidation system or hydrogen peroxide oxidation system; The biological pretreatment comprises one or more of fungal treatment or enzymatic hydrolysis treatment; the fungus used in the fungal treatment comprises one or more of white rot fungus or ganoderma; the enzyme used in the enzymatic hydrolysis treatment comprises one or both of cellulase or ligninase; B1) subjecting the pretreated wood or bamboo waste to cross-linking and reinforcing treatment to obtain a modified sample, wherein the cross-linking and reinforcing treatment comprises one or more of ionic coordination treatment, polyphenol complexation treatment, or adhesive treatment; B2) assembling the modified sample to obtain an assembled sample; C) subjecting the assembled sample to hot-pressing shaping treatment to obtain a support plate for sports shoe sole.

2. The production method according to claim 1, characterized by, The wood or bamboo waste comprises one or more of powder, fiber, shaving, and veneer of wood or bamboo waste, wherein the veneer has a thickness of not more than 3 mm.

3. The method of claim 1, wherein, The assembly comprises one or more of ordered assembly or random assembly.

4. The method of claim 1, wherein, The hot-pressing shaping treatment has a temperature of 60-160 ℃, a pressure of 1-30 MPa, and a time of 10 min-48 h.

5. A support plate for sports shoe sole prepared by the method of any one of claims 1-4.

6. An athletic shoe, characterized by The support plate for sports shoe sole of claim 5.

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